Weather alerts in Maryland, 2018
1,609 weather alerts in 2018, 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 in 2018. Tap one for its archive.
- Alerts
- 1,609
- Warnings
- 639
- Watches
- 170
- Advisories
- 413
- Busiest month
- September250 alerts
- Busiest day
- July 27, 201834 alerts
Over time
By month
The alerts
1,609 alerts are too many to list on one page. Narrow it to a product above, to a month in the chart, or to a county.
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.
- Baltimore County268
- Anne Arundel County243
- Montgomery County235
- Washington County202
- Dorchester County200
- Harford County200
- Frederick County198
- City of Baltimore195
- Saint Mary's County189
- Cecil County187
- Prince George's County184
- Howard County182
- Worcester County176
- Caroline County175
- Wicomico County168
- Queen Anne's County167
- Allegany County165
- Carroll County164
- Kent County164
- Somerset County159
- Charles County158
- Talbot County150
- Calvert County143
- Garrett County53
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20172019
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.