Weather alerts in Maryland
27,606 weather alerts since 1986, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered any part of the state, so the counties below add up to more than the state.
Weather alerts by county
Each county as a circle sized by its count since 1986. Tap one for its archive.
- Alerts
- 27,606
- Warnings
- 12,023
- Watches
- 2,480
- Advisories
- 5,770
- Busiest year
- 20112,027 alerts
- Average year
- 673over 41 years on file
Over time
By year
Before late 2005 the archive holds only tornado, severe thunderstorm, flash flood and marine warnings, and from 1997 SPC's watches, so the jump that year is the archive widening, not the weather.
By month of the year
By product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Anne Arundel County4,967
- Baltimore County4,953
- Prince George's County4,435
- Frederick County4,025
- Montgomery County4,005
- City of Baltimore3,946
- Cecil County3,856
- Queen Anne's County3,706
- Saint Mary's County3,670
- Charles County3,658
- Carroll County3,599
- Kent County3,546
- Dorchester County3,543
- Caroline County3,528
- Washington County3,506
- Harford County3,429
- Calvert County3,324
- Talbot County3,309
- Howard County3,282
- Wicomico County3,192
- Worcester County3,182
- Allegany County3,084
- Somerset County2,889
- Garrett County1,692
The latest warnings
The most recent on file, newest first.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 22, 2:57 PM EDT | Coastal Flood Warning | AKQ | Dorchester, Somerset, Wicomico, Worcester | 65 hr |
| Sep 13, 4:43 AM EDT | Flash Flood Warning | AKQ | Worcester | 3 hr |
| Sep 12, 4:51 PM EDT | Flash Flood Warning | LWX | Garrett | 3 hr |
| Sep 4, 4:23 PM EDT | Severe Thunderstorm Warning | LWX | Charles, Prince George's | 27 min |
| Sep 4, 1:19 PM EDT | Severe Thunderstorm Warning | LWX | Garrett | 41 min |
| Sep 4, 2:18 AM EDT | Severe Thunderstorm Warning | AKQ | Somerset | 27 min |
| Sep 4, 12:52 AM EDT | Severe Thunderstorm Warning | PHI | Caroline, Talbot | 53 min |
| Sep 4, 12:18 AM EDT | Severe Thunderstorm Warning | PHI | Caroline, Queen Anne's, Talbot | 42 min |
| Sep 3, 11:59 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Queen Anne's, Talbot | 61 min |
| Sep 3, 11:56 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Calvert, Prince George's | 49 min |
| Sep 3, 11:37 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery, Prince George's | 38 min |
| Sep 3, 11:13 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 47 min |
Nearby
Sources
National Weather Service watches, warnings, advisories and statements from the Iowa Environmental Mesonet's VTEC archive, which reconstructs tornado, severe thunderstorm, flash flood and marine warnings back to 1986 from the NWS text archive. Storm Prediction Center watches and mesoscale discussions from SPC's archive through the Mesonet. County centers from the US Census Bureau. Rebuilt daily.