Weather alerts in Maryland, 2010
1,261 weather alerts in 2010, 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 2010. Tap one for its archive.
- Alerts
- 1,261
- Warnings
- 423
- Watches
- 124
- Advisories
- 213
- Busiest month
- July202 alerts
- Busiest day
- September 30, 201043 alerts
Over time
By month
The alerts
1,261 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 County245
- Anne Arundel County242
- Prince George's County235
- Queen Anne's County229
- Caroline County215
- Frederick County212
- Kent County210
- Cecil County208
- City of Baltimore206
- Talbot County200
- Carroll County199
- Charles County194
- Saint Mary's County187
- Calvert County183
- Washington County167
- Montgomery County164
- Allegany County162
- Worcester County150
- Howard County149
- Dorchester County134
- Harford County133
- Wicomico County131
- Somerset County128
- Garrett County83
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20092011
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.