NDEWS Hotspot Alerts

NDEWS Hotspot Alerts is a dynamic notification system that quantifies the degree to which the observation deviates from the expected range of values over an 84-day window provided by biospatial.io.

Alerts are updated bi-weekly and limited to US states with statewide partnerships with biospatial.io: Alabama, Alaska, Arkansas, California, Colorado, District of Columbia, Florida, Georgia, Idaho, Illinois, Kansas, Kentucky, Maine, Michigan, Minnesota, Mississippi, Montana, New Mexico, New York, North Carolina, Pennsylvania, Rhode Island, South Carolina, Tennessee, Utah, Virginia, Wisconsin, and Wyoming.

2025

NDEWS Special Report: NDEWS Special Report: EMS encounters for nonfatal ‘fentanyl-plus-related’ overdoses in the US

Out of 31,147 EMS encounters for nonfatal “fentanyl-plus” (fentanyl+cocaine or fentanyl+methamphetamine)-related overdoses from January 1, 2024 to November 30, 2025,16,226 (52.1%) occurred in Western states, 3,751 (12.1%) in Midwestern states, 9,037 (29.0%) in Southern states and 2,133 (6.8%) in Northeastern states.

Published in NDEWS Weekly Briefing Issue 261: December 12, 2025

NDEWS Special Report: EMS encounters for nonfatal benzodiazepine-related overdoses in the US January 1, 2024 – November 30, 2025

Out of 67,886 EMS encounters for nonfatal benzodiazepine-related overdoses from January 1, 2024 to November 30, 2025, 15,878 (23.4%) occurred in Western states, 10,346 (15.2%) in Midwestern states, 32,730 (48.2%) in Southern states and 8,932 (13.2%) in Northeastern states.

Published in NDEWS Weekly Briefing Issue 260: December 5, 2025

NDEWS Special Report: EMS encounters for nonfatal nitazene-related overdoses in the US January 1, 2024 – October 31, 2025

Out of 1,996 EMS encounters for nonfatal nitazene-related overdoses from January 1, 2024 to October 31, 2025, the data shows that nearly all counties with nonfatal nitazene-related overdoses were located in the Southeast region of the US.

Published in NDEWS Weekly Briefing Issue 256: November 7, 2025

NDEWS Special Report: US counties with the highest EMS encounters for nonfatal drug-related overdoses January 1, 2025 – September 30, 2025

Out of 28,569 EMS encounters for nonfatal drug-related overdoses from January 1, 2025 to September 30, 2025; Los Angeles County, CA ranked highest in EMS encounters for nonfatal overdoses followed by Cook County, IL. Los Angeles County, CA had higher EMS encounters for fentanyl compared to Cook County, IL. But Cook County, IL had higher EMS encounters for heroin compared to Los Angeles County, CA.

Published in NDEWS Weekly Briefing Issue 255: October 31, 2025

NDEWS Special Report: EMS encounters for nonfatal xylazine-related overdoses in the US January 1, 2024 – September 30, 2025

There were 1,039 EMS encounters for nonfatal xylazine-related overdoses from January 1, 2024 to September 30, 2025. The ten counties with the highest rates are shown; most counties were located in the Northeastern region, particularly in Pennsylvania, as highlighted in one of our articles in this Briefing. The data shows a statistically significant increase in EMS encounters for nonfatal xylazine-related overdoses across the US during this time period.

Published in NDEWS Weekly Briefing Issue 254: October 24, 2025

NDEWS Special Report: EMS encounters for nonfatal drug-related overdoses involving psilocybin in the US January 1, 2024 – September 30, 2025

Out of 530 EMS encounters for nonfatal drug-related overdoses involving psilocybin from January 1, 2024 to September 30, 2025, the data for top five counties for EMS encounters were not suppressed (<10 encounters) while the remaining were suppressed. The data shows that all the top five counties were located in the Western region. NDEWS will continue to monitor the situation for overdoses to this drug.

Published in NDEWS Weekly Briefing Issue 252: October 10, 2025

NDEWS Special Report: EMS encounters for nonfatal ketamine-related overdoses in the US January 2024 – September 30, 2025

Out of 8,793 EMS encounters for nonfatal ketamine-related overdoses from January 1, 2024 to September 30, 2025, 2,076 (23.6%) occurred in Western states, 1,691 (19.3%) in Midwestern states, 4,117 (46.8%) in Southern states and 909 (10.3%) in Northeastern states. The data shows a statistically significant increase in EMS encounters for ketamine-related overdoses across Western, Midwestern, Northeastern and Southern states, and nationally overall.

Published in NDEWS Weekly Briefing Issue 251: October 3, 2025

NDEWS Special Report: EMS encounters for fentanyl-related overdoses in the US January 1, 2024 – August 31, 2025

Out of 123,738 EMS encounters for fentanyl-related overdoses from January 1, 2024 to August 31, 2025, the data shows a slightly later peak in EMS encounters for fentanyl-related overdoses between 17:00 and 21:59, with Fridays recording the highest number of EMS encounters by day of the week.

Published in NDEWS Weekly Briefing Issue 250: September 26, 2025

NDEWS Special Report: Biospatial Surveillance: EMS encounters involving both kava and kratom-related overdoses (nonfatal or fatal) in the US January 1, 2024 – August 31, 2025

NDEWS evaluated biospatial data from January 2024 to August 2025 using the specified keywords* and found eight states (California, Colorado, New Mexico, Minnesota, Tennessee, North Carolina, South Carolina, Florida) with EMS encounters involving both kava and kratom-related overdoses. Data for each state was suppressed (under 10 encounters); it related to EMS encounters involving both kava and kratom-related overdoses. A total of 18 encounters was found during this time period. NDEWS will continue to monitor overdoses to this drug combination.

Published in NDEWS Weekly Briefing Issue 248: September 12, 2025

Naloxone utilization in EMS encounters for nonfatal overdoses in the US, January 1, 2024 – July 31, 2025

Out of 444,343 instances of naloxone utilization in EMS encounters for nonfatal overdoses from January 1, 2024 to July 31, 2025, 109,840 (24.7%) occurred in Western states, 67,241 (15.1%) in Midwestern states, 188,312 (42.4%) in Southern states and 78,950 (17.8%) in Northeastern states. The data shows an initial statistically significant decrease in naloxone utilization in EMS encounters for nonfatal overdoses, followed by a statistically significant increase across Western, Midwestern, Northeastern and Southern states, and nationally overall.

Published in NDEWS Weekly Briefing Issue 246: August 29, 2025

EMS encounters for nonfatal cocaine-related overdoses in the US, January 1, 2024 – July 31, 2025

Out of 68,790 EMS encounters for nonfatal cocaine-related overdoses from January 1, 2024 to July 31, 2025, 12,989 (18.9%) occurred in Western states, 11,337 (16.5%) in Midwestern states, 29,543 (42.9%) in Southern states and 14,921 (21.7%) in Northeastern states. The data shows a statistically significant increase in EMS encounters for nonfatal cocaine-related overdoses across Western and Southern states, and nationally overall, while a statistically significant decrease was observed across the Midwestern and Northeastern states.

Published in NDEWS Weekly Briefing Issue 245: August 22, 2025

NDEWS Hotspot Alert: Counties with alerts for nonfatal overdoses involving opioids and non-opioids in the US July 1, 2025 – July 31, 2025

his week, NDEWS highlights US counties with alerts for nonfatal overdoses involving opioids and non-opioids in July 2025. There were a total of 13 alerts from 13 different counties across eight states that had non-suppressed (greater than or equal to ten) EMS encounters. For the month of July, across all 13 alerts, a total of 156 EMS encounters for nonfatal drug-related overdoses were reported. The data shows that most counties with alerts were located in the western and the southeastern region of the US.

Published in NDEWS Weekly Briefing Issue 243: August 8, 2025

EMS encounters for nonfatal alcohol intoxication, and opioid-related overdoses with and without alcohol intoxication, among adults in the US January 1, 2025 – June 30, 2025

From January 2025 to June 2025, there were 13,750 EMS encounters for nonfatal opioid-related overdoses with alcohol intoxication; 110,160 EMS encounters for nonfatal opioid-related overdoses without alcohol intoxication and 1,123,267 EMS encounters for alcohol intoxication by itself. The data shows a statistically significant increase in EMS encounters for nonfatal opioid-related overdoses with and without alcohol intoxication as well as alcohol intoxication by itself across all ages and sexes in the past 6 months.

EMS encounters increased for all ages; however, they were highest for 18- to 44-year-olds, regardless of sex. EMS encounters related to alcohol intoxication alone were higher for women 60+ compared to women 45-59 years of age; the same trend was seen for men.

The opposite was true for nonfatal opioid-related encounters with alcohol intoxication. While encounters increased over these six months, they were higher for men and women 45-59 years old compared to the 60+ year old group.

Encounters related to nonfatal opioid-related overdoses without alcohol intoxication were higher for the 60+ age group for women vs the 45–59-year-olds; for men, the opposite was seen. Men 45-59 had higher increases over time than their 60+ year old counterparts.

Published in NDEWS Weekly Briefing Issue 242: August 1, 2025

EMS encounters for bromazolam-related overdoses (nonfatal or fatal) in the US January 1, 2022 – June 30, 2025

_{NDEWS evaluated biospatial data from January 2022 to June 2025 using the keywords “bromazolam” ( or “bromozolam”, “bromazolan”, “brom”, “bromo”, “bromaz”), “bro+fentanyl”, “bro+heroin” or “bro+stim” and found ten counties that had the highest numbers of encounters overall for the US. All but one county presented suppressed data (under 10 encounters) related to bromazolam EMS encounters. Out of 157 encounters for bromazolam-related overdoses during this time period, only Halifax County, NC produced non suppressed data (rate per 10k population=7.07). NDEWS will continue to monitor the situation for overdoses to this drug.}

Published in NDEWS Weekly Briefing Issue 241: July 25, 2025

EMS encounters for overdoses involving both ketamine and fentanyl (nonfatal or fatal) in the US January 1, 2022 – June 30, 2025

_{Out of 3,163 EMS encounters for overdoses involving both ketamine and fentanyl from January 2022 to June 2025, 950 (30.0%) occurred in Western states, 1,228 (38.8%) in Central states and 985 (31.2%) in Eastern states. The data shows a statistically significant increase in EMS encounters for overdoses involving both ketamine and fentanyl across Eastern and Western states, and nationally overall. The trend is not significant (i.e., no statistically significant increase or decrease) for Central states.}

• Published in NDEWS Weekly Briefing Issue 239: July 11, 2025

US counties with the highest rates of EMS encounters for delta-8/delta-10-related overdoses (nonfatal or fatal) per 10,000 population January 1, 2023 – May 31, 2025

_{Out of 4,746 EMS encounters for delta-8/delta-10-related overdoses from January 2023 to May 2025, 26 (0.5%) occurred in western states, 1,417 (29.9%) in central states and 3,303 (69.6%) in eastern states. The data shows a statistically significant decrease in delta-8/ delta-10-related EMS encounters across Eastern and central states, and nationally overall.}

• Published in NDEWS Weekly Briefing Issue 235: June 13, 2025

NDEWS Special Report EMS encounters for kratom/7-OH-related overdoses (nonfatal or fatal) in the US January 1, 2023 – April 30, 2025

_{Out of 4,233 EMS encounters for kratom/7-OH-related overdoses from January 2023 to April 2025, 1,071 (25.3%) occurred in western states, 1,191 (28.1%) in central states and 1,971 (46.6%) in eastern states. The data shows a statistically significant increase in kratom/7-OH-related EMS encounters across all three regions and nationally overall.}

• Published in NDEWS Weekly Briefing Issue 233: May 30, 2025

NDEWS Special Report EMS encounters for tianeptine-related overdoses (nonfatal or fatal) in the US January 1, 2023 – April 30, 2025

_{The data shows a statistically significant increase in tianeptine-related EMS encounters in the western states, in contrast to the declining trends observed in the central and eastern states and nationally overall.}

• Published in NDEWS Weekly Briefing Issue 232: May 23, 2025

EMS encounters for nonfatal heroin-related overdoses in the US July 1, 2024 – April 30, 2025

_{The data shows a statistically significant increase in nonfatal heroin-related EMS encounters in the western states, in contrast to the declining trends observed in Central and Eastern states and nationally overall.}

• Published in NDEWS Weekly Briefing Issue 231: May 16, 2025

EMS encounters for nitazene-related overdoses (nonfatal or fatal) in the US January 1, 2023 – April 30, 2025

_{The data shows that most counties were located in the southeastern region.}

• Published in NDEWS Weekly Briefing Issue 229: May 2, 2025

EMS encounters for xylazine- and medetomidine-related overdoses (nonfatal and fatal) in the US January 1, 2023 – March 31, 2025

_{The data shows that counties were located throughout eastern region of the US. Among states with at least 75% coverage, there were 1,233 EMS encounters:}

• Published in NDEWS Weekly Briefing Issue 226: April 11, 2025

NDEWS Special Report: EMS encounters for nonfatal methamphetamine-related overdoses in the US January 1, 2023 – March 31, 2025

_{The data shows that counties with the highest rates of EMS encounters for nonfatal methamphetamine-related overdose encounters over 27 months were heavily concentrated in the southeastern US. Among US states with at least 75% coverage, there were 735,651 EMS encounters in response to nonfatal methamphetamine-related overdoses:}

• Published in NDEWS Weekly Briefing Issue 225: April 4, 2025

NDEWS Special Report: EMS encounters in the US for nonfatal inhalant-related overdoses January 1, 2023 – December 31, 2024

_{Among states with at least 75% coverage, there were 852 nonfatal inhalant-related EMS encounters:}

• Published in NDEWS Weekly Briefing Issue 224: March 28, 2025

NDEWS Special Report: EMS encounters in the US for nonfatal tusi-related overdoses January 1, 2022 – February 28, 2025

_{The data shows that all counties with the highest rates of nonfatal tusi-related (also known as ‘pink cocaine’ overdose encounters over 38 months were on the east coast and west coast—especially the southeast and southwest of the US. Among states with at least 75% coverage, there were 105 nonfatal tusi-related overdose encounters:}

• Published in NDEWS Weekly Briefing Issue 223: March 21, 2025

NDEWS Special Report: Trends in EMS encounters in the US for nonfatal fentanyl-related overdoses by month, January 2023 – February 2025 

_{According to the recently published paper by NDEWS Co-Directors Drs. Palamar and Cottler, there has been a 1,194.2% increase in nonfatal pediatric fentanyl exposures reported to poison centers, rising from just 69 cases in 2015 to 893 in 2023.Since the paper’s data covers 2015-2023, we wanted to see if recent EMS data mirrored such trends in the US nationally across all ages. The data in the report shows that between January 2023 to June 2023, EMS encounters for nonfatal fentanyl-related overdoses significantly increased and then significantly decreased through February 2025:}

• Published in NDEWS Weekly Briefing Issue 222: March 14, 2025

NDEWS Special Report: EMS encounters in the US for nonfatal methamphetamine-related overdoses among younger adults (18-64) and older adults (65+) January 1 – December 31, 2024

• Published in NDEWS Weekly Briefing Issue 221: March 7, 2025

NDEWS Special Report EMS encounters in the US for nonfatal opioid-related overdoses that also indicated suicide ideation January 1, 2023 – December 31, 2024

_{The data shows that all five counties with the highest rates of both nonfatal overdoses and suicide ideation over 24 months were in the lower half of the United States:}

• Published in NDEWS Weekly Briefing Issue 220: February 28, 2025

NDEWS Special Report: EMS encounters for nonfatal and fatal heroin-related overdoses in the US January 1, 2023 – December 31, 2024

_{The graph included in this report depicts a decline in overdoses over time in EMS encounters for nonfatal heroin-related overdoses as well as fatal heroin-related overdoses:}

• Published in NDEWS Weekly Briefing Issue 219: February 21, 2025

NDEWS Special Report: EMS encounters for nonfatal drug overdoses and suicide ideation in the US January 1 – December 31, 2024

• Published in NDEWS Weekly Briefing Issue 217: February 7, 2025

NDEWS Special Report: EMS dispatches for nonfatal fentanyl-related overdoses in the US January 1 – December 31, 2024

• Published in NDEWS Weekly Briefing Issue 216: January 31, 2025

NDEWS Special Report: 27.9% of nonfatal stimulant-related overdoses reported by EMS personnel in the US from July 1 – December 31, 2024 occurred between 18:00 and 22:59

• Published in NDEWS Weekly Briefing Issue 215: January 24, 2025

NDEWS Special Report: Counties with alerts for nonfatal overdoses involving opioids and non-opioids November 1 – December 31, 2024

• Published in NDEWS Weekly Briefing Issue 214: January 17, 2025

2024

NDEWS Special Report: 28.2% of nonfatal fentanyl-related overdoses reported by EMS personnel from August 1 – November 30, 2024, occurred between the hours of 16:00 and 20:59

• Published in NDEWS Weekly Briefing Issue 212: December 20, 2024

NDEWS Special Report: Frequency of counties ranking among the top five counties for nonfatal overdoses, September 7 – November 30, 2024

• Published in NDEWS Weekly Briefing Issue 211: December 13, 2024

NDEWS Hotspot Alerts: Counties with a higher-than-expected number of nonfatal drug-related 911 dispatch overdoses, November 25 – December 1, 2024

• Published in NDEWS Weekly Briefing Issue 210: December 6, 2024

NDEWS Special Report: Naloxone utilization in nonfatal fentanyl overdose related 911 dispatches, January 1 – October 31, 2024

NDEWS State Report: Hotspot County Alerts in California, January 1 – October 31, 2024: Opioid and non-opioid nonfatal overdose alerts

NDEWS Hotspot Alert: Nonfatal heroin, methamphetamine, opioid, and non-opioid 911 dispatches, October 30 – November 5, 2024

NDEWS Special Report: Nonfatal fentanyl-involved overdoses January 1 – September 30, 2024

NDEWS Special Report: Frequency of counties ranking among the top five counties for nonfatal overdoses from July 9 to September 30, 2024

NDEWS Hotspot Alert: Counties with higher-than-expected nonfatal overdoses October 8-14, 2024: Methamphetamine, opioid and non-opioid 911 dispatches

NDEWS Hotspot Alerts: Counties with higher than expected nonfatal methamphetamine-involved overdoses from August 1 – September 30, 2024

NDEWS Hotspot Alerts: Counties with higher than expected nonfatal heroin-involved overdoses from January 1 – September 30, 2024

NDEWS Hotspot Alerts: Counties with higher than expected nonfatal overdoses from September 10 – 16, 2024: Heroin, methamphetamine, opioid and non-opioid 911 dispatches

NDEWS Special Report: Naloxone utilization in nonfatal opioid overdose-related 911 dispatches from January 1 – August 31, 2024

NDEWS Special Report: Nonfatal fentanyl overdoses in the US from February 1 to July 31, 2024

NDEWS Special Report: Counties with the highest rates of nonfatal overdose May 1 – July 31, 2024

NDEWS Special Report August 1, 2023 – July 31, 2024: Nonfatal opioid overdose with suicide ideation

NDEWS Hotspot Alerts July 25 – 30, 2024: Opioid, heroin, methamphetamine, and non-opioid 911 dispatches

NDEWS Hotspot Alerts July 18 – 24, 2024: Opioid and non-opioid 911 dispatches

NDEWS Hotspot Alerts July 4 – 10, 2024: Methamphetamine, opioid and non-opioid 911 dispatches

NDEWS Alerts May 9 – 15, 2024: Methamphetamine, opioid, and non-opioid 911 dispatches

NDEWS Hotspot Alerts April 11 – 17, 2024: Methamphetamine, opioid, and non-opioid 911 dispatches

NDEWS State Report Alerts in New York for 2023: Opioid and non-opioid nonfatal overdose alerts

NDEWS Hotspot Alerts March 21 – 27, 2024: Heroin, methamphetamine, opioid and non-opioid 911 dispatches

NDEWS Hotspot Alerts March 14 – 20, 2024: Heroin, methamphetamine, opioid and non-opioid 911 dispatches

NDEWS State Report Alerts in Pennsylvania for 2023: Opioid and non-opioid nonfatal overdose alerts

NDEWS Hotspot Alerts February 29 – March 6, 2024: Heroin, methamphetamine, opioid and non-opioid 911 dispatches

NDEWS Hotspot Alerts January 1 – February 28, 2024: Alerts by county and week

NDEWS Hotspot Alerts January 1 – February 21, 2024: Heroin-involved overdose dispatches

NDEWS Hotspot Alerts January 1 – February 14, 2024: Methamphetamine-involved overdose dispatches

NDEWS State Report alerts in Michigan for 2023: Opioid and non-opioid nonfatal overdose alerts

NDEWS State Report alerts in Florida for 2023: Opioid and non-opioid nonfatal overdose alerts

NDEWS Hotspot Alerts January 11 – 17, 2024: Heroin, methamphetamine, opioid and non-opioid 911 dispatches

NDEWS Special Report January 1 – December 31, 2023: Naloxone utilization in nonfatal opioid overdose-related 911 dispatches

2023

NDEWS Hotspot Alerts 23 counties with higher-than-expected drug related 911 dispatch counts

NDEWS Hotspot Alerts 27 counties with higher-than-expected drug related 911 dispatch counts

NDEWS Hotspot Alerts counties with four or more alerts for opioid or non-opioid overdoses September 14 to November 8

NDEWS Hotspot Alerts: 32 counties with higher-than-expected drug-related 911 dispatch counts

NDEWS Hotspot Alerts: 32 counties with higher-than-expected drug-related 911 dispatch counts

NDEWS Hotspot Alerts: 21 counties with higher-than-expected drug-related 911 dispatch counts

NDEWS Hotspot Alerts: 31 counties with higher-than-expected drug-related 911 dispatch counts

NDEWS Hotspot Alerts: 33 counties with higher-than-expected drug-related 911 dispatch counts

NDEWS Hotspot Alerts: 38 counties among those with higher-than-expected drug-related 911 dispatch counts

NDEWS Hotspot Alerts: Counties with three or more alerts for non-opioid overdoses, July 13 to August 30

NDEWS Hotspot Alerts: Top 34 counties with higher-than-expected drug-related 911 dispatch counts

NDEWS Hotspot Alerts: Counties with higher-than-expected drug-related 911 dispatch counts

NDEWS Hotspot Alerts: Top 37 counties with higher-than-expected drug-related 911 dispatch counts

NDEWS Hotspot Alerts: July 27 – August 2, 2023: Opioid, heroin, methamphetamine, and non-opioid 911 dispatches

NDEWS Hotspot Alerts: July 20–26, 2023: Opioid, heroin, methamphetamine, and non-opioid 911 dispatches

NDEWS Special Report Nonfatal fentanyl overdoses in the US January 1 – June 7, 2023

NDEWS is excited to announce that we have expanded our partnership with biospatial inc. giving us access to new data and surveillance methods. With this expansion, we are able to look more closely at substances and trends, including substances that are of significant concern, such as fentanyl. In this report, fentanyl-specific overdose 911 dispatches in the US are examined between January 1 and June 7, 2023.

Click here to view the report.

NDEWS Hotspot Alerts: July 6–12, 2023: Opioid, methamphetamine, and non-opioid 911 dispatches

NDEWS Hotspot Alerts June 22–28, 2023: Opioid, methamphetamine, and non-opioid 911 dispatches

NDEWS Hotspot Alerts June 8–14, 2023: Opioid, methamphetamine, and non-opioid 911 dispatches

NDEWS Hotspot Alerts May 26–31, 2023: Opioid, methamphetamine, and non-opioid 911 dispatches

NDEWS Hotspot Alerts May 19–25, 2023: Opioid, methamphetamine, and non-opioid 911 dispatches

NDEWS Hotspot Alerts May 4–10, 2023: Opioid, methamphetamine, and non-opioid 911 dispatches

This week’s NDEWS Hotspot Alerts report includes 42 counties with higher-than-expected drug-related 911 dispatch counts over the previous 7-day period. View the full report here. Click here to read more about NDEWS Hotspot Alerts.

NDEWS Hotspot Alerts (n=23) April 20–26, 2023: Opioid, heroin, methamphetamine, and non-opioid 911 dispatches

This week’s NDEWS Hotspot Alerts report includes 23 counties with higher-than-expected drug-related 911 dispatch counts over the previous 7-day period. View the full report here. Click here to read more about NDEWS Hotspot Alerts.

NDEWS Hotspot Alerts (n=31) April 13–19, 2023: Opioid, heroin, methamphetamine, and non-opioid 911 dispatches

This week’s NDEWS Hotspot Alerts report includes 31 counties with higher-than-expected drug-related 911 dispatch counts over the previous 7-day period. View the full report here. Click here to read more about NDEWS Hotspot Alerts.

NDEWS Hotspot Alerts (n=21) March 30 – April 5, 2023: Opioid, heroin, methamphetamine, and non-opioid 911 dispatches

This week’s NDEWS Hotspot Alerts report includes 21 counties with higher-than-expected drug-related 911 dispatch counts over the previous 7-day period. View the full report here. Click here to read more about NDEWS Hotspot Alerts.

NDEWS Hotspot Alerts (n=24) March 23–29, 2023: Opioid, heroin, methamphetamine, and non-opioid 911 dispatches

This week’s NDEWS Hotspot Alerts report includes 24 counties with higher-than-expected drug-related 911 dispatch counts over the previous 7-day period. View the full report here. Click here to read more about NDEWS Hotspot Alerts.

NDEWS Hotspot Alerts (n=24) March 16–22 , 2023: Opioid, heroin, methamphetamine, and non-opioid 911 dispatches

This week’s NDEWS Hotspot Alerts report includes 24 counties with higher-than-expected drug-related 911 dispatch counts over the previous 7-day period. View the full report here. Click here to read more about NDEWS Hotspot Alerts.

NDEWS Hotspot Alerts (n=21) March 9–15, 2023: Opioid, heroin, methamphetamine, and non-opioid 911 dispatches

This week’s NDEWS Hotspot Alerts report includes 21 counties with higher-than-expected drug-related 911 dispatch counts over the previous 7-day period. View the full report here. Click here to read more about NDEWS Hotspot Alerts.

NDEWS Hotspot Alerts (n=27) March 2–8, 2023: Opioid, heroin, methamphetamine, and non-opioid 911 dispatches

This week’s NDEWS Hotspot Alerts report includes 27 counties with higher-than-expected drug-related 911 dispatch counts over the previous 7-day period. View the full report here. Click here to read more about NDEWS Hotspot Alerts.

NDEWS Hotspot Alerts (n=31) February 23 – March 1, 2023: Opioid, heroin, methamphetamine, and non-opioid 911 dispatches

This week’s NDEWS Hotspot Alerts report includes 31 counties with higher-than-expected drug-related 911 dispatch counts over the previous 7-day period. View the full report here. Click here to read more about NDEWS Hotspot Alerts.

NDEWS Hotspot Alerts (n=24) February 16–22, 2023: Opioid, heroin, methamphetamine, and non-opioid 911 dispatches

This week’s NDEWS Hotspot Alerts report includes 24 counties with higher-than-expected drug-related 911 dispatch counts over the previous 7-day period. View the full report here. Click here to read more about NDEWS Hotspot Alerts.

NDEWS Hotspot Alerts (n=38) February 2–8 , 2023: Opioid, heroin, methamphetamine, and non-opioid 911 dispatches

This week’s NDEWS Hotspot Alerts report includes 38 counties with higher-than-expected drug-related 911 dispatch counts over the previous 7-day period. View the full report here. Click here to read more about NDEWS Hotspot Alerts.

NDEWS Hotspot Alerts (n=26) January 26 – February 1, 2023: Opioid, heroin, methamphetamine, and non-opioid 911 dispatches

This week’s NDEWS Hotspot Alerts report includes 26 counties with higher-than-expected drug-related 911 dispatch counts over the previous 7-day period. View the full report here. Click here to read more about NDEWS Hotspot Alerts.

NDEWS Hotspot Alerts (n=25) January 12 – 18, 2023: Opioid, heroin, methamphetamine, and non-opioid 911 dispatches

This week’s NDEWS Hotspot Alert​s ​report ​includes 25 counties with higher-than-expected drug-related 911 dispatch counts over the previous 7-day period. View the full report here. Click here to read more about NDEWS Hotspot Alerts.

NDEWS Hotspot Alerts (n=29) January 5 – 11, 2023: Opioid, heroin, methamphetamine, and non-opioid 911 dispatches

This week’s NDEWS Hotspot Alert​s ​report ​includes 24 counties with higher-than-expected drug-related 911 dispatch counts over the previous 7-day period. View the full report here. Click here to read more about NDEWS Hotspot Alerts.

NDEWS Hotspot Alerts December 29 – January 4: Opioid, heroin, methamphetamine, and non-opioid 911 dispatches

This week’s NDEWS Hotspot Alert​s ​report ​includes 33 counties with higher-than-expected drug-related 911 dispatch counts over the previous 7-day period. View the full report here. Click here to read more about NDEWS Hotspot Alerts.

2022

NDEWS Hotspot Alerts December 8–14, 2022: Opioid, heroin, methamphetamine, and non-opioid 911 dispatches

This week’s NDEWS Hotspot Alert​s ​report ​includes 25 counties with higher-than-expected drug-related 911 dispatch counts over the previous 7-day period. View the full report here.  Click here to read more about NDEWS Hotspot Alerts.

NDEWS Hotspot Alerts December 1–7, 2022: Opioid, heroin, methamphetamine, and non-opioid 911 dispatches

This week’s NDEWS Hotspot Alert​s ​report ​includes 23 counties with higher-than-expected drug-related 911 dispatch counts over the previous 7-day period. View the full report here. Click here to read more about NDEWS Hotspot Alerts.

NDEWS Hotspot Alerts November 24–30, 2022: Opioid, heroin, methamphetamine, and non-opioid 911 dispatches

This week’s NDEWS Hotspot Alert​s ​report ​includes 27 counties with higher-than-expected drug-related 911 dispatch counts over the previous 7-day period. View the full report here. Click here to read more about NDEWS Hotspot Alerts.

NDEWS Hotspot Alerts: Counties with above-expected counts for drug-related 911 dispatches October 27 – November 2, 2022

In this week’s NDEWS Hotspot Alerts report, 21 counties in 9 states were identified as having above-expected counts for drug-related 911 dispatches over the previous 7-day period. View the full alert here.

NDEWS Hotspot Alerts October 20–26, 2022: Opioid, heroin, methamphetamine, and non-opioid 911 dispatches

This week’s NDEWS Hotspot Alert​s ​report ​includes 21 counties with higher-than-expected drug-related 911 dispatch counts over the previous 7-day period. View the full report here.

NDEWS Hotspot Alerts October 13–19, 2022: Opioid, heroin, methamphetamine, and non-opioid 911 dispatches

This week’s NDEWS Hotspot Alert reported two counties with 911 dispatch counts higher than 10. San Francisco, CA had 23 methamphetamine-related 911 dispatches, and Salt Lake, UT had 10 non-opioid-related 911 dispatches. Higher counts were reported for 15 US counties. View the full report here.

NDEWS Hotspot Alerts October 6–12, 2022: Opioid, heroin, methamphetamine, and non-opioid 911 dispatches

NDEWS Hotspot Alerts is a dynamic notification system of biospatial.io that quantifies the degree to which observed 911 dispatch rates for drug-related events deviate from expected ranges of values. This week’s report identifies counties with above-expected drug-related 911 dispatches over the past week. View the full report here.

NDEWS Hotspot Alerts: Opioid, heroin, methamphetamine, and non-opioid 911 dispatches September 1–7, 2022

NDEWS Hotspot Alerts is a dynamic notification system of biospatial.io that quantifies the degree to which observed 911 dispatch rates for drug-related events deviate from expected ranges of values. View the full report here.

NDEWS Hotspot Alerts in states with full coverage: Opioid, heroin, methamphetamine, and non-opioid 911 dispatches August 25 – 31, 2022

During the seven day period from August 25 – August 31, 2022, seventeen counties had higher-than-expected rates of drug-related dispatches. View the full report here.

Past alerts:

April 9-28, 2022

March 26 – April 8, 2022

March 11-25, 2022

March 1-10, 2022

Last modified: 05/30/2025