Alert archive / Maryland / Frederick County / 2011

Weather alerts in Frederick County, Maryland, September 2011

30 weather alerts in September 2011, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Alerts
30
Warnings
12
Watches
7
Advisories
3
Busiest day
September 8, 20117 alerts

Over time

By day

Days in UTC, the clock the archive keeps.

The alerts

Every alert, in the order issued. Times are local, Eastern Time. Each opens its own page with the text, the map, the radar and the sounding.

IssuedProductOfficeLasted
Sep 3, 9:21 AM EDTSpecial Weather StatementLWX24 min
Sep 4, 11:54 PM EDTSpecial Weather StatementLWX66 min
Sep 5, 4:06 AM EDTFlash Flood WatchLWX5 days
Sep 6, 12:26 PM EDTRiver Flood WatchLWX29 hr
Sep 6, 5:24 PM EDTRiver Flood WatchLWX24 hr
Sep 7, 11:37 PM EDTFlash Flood WarningLWX3 hr
Sep 8, 8:47 AM EDTRiver Flood WatchLWX5 hr
Sep 8, 10:28 AM EDTFlash Flood WarningLWX9 hr
Sep 8, 1:55 PM EDTRiver Flood WarningLWX22 hr
Sep 8, 3:23 PM EDTSpecial Weather StatementLWX97 min
Sep 8, 6:25 PM EDTFlash Flood WarningLWX74 min
Sep 8, 7:01 PM EDTFlash Flood WarningLWX4 hr
Sep 8, 9:50 PM EDTAreal Flood WarningLWX4 hr
Sep 9, 1:47 AM EDTAreal Flood WarningLWX8 hr
Sep 11, 4:13 AM EDTFlash Flood WatchLWX20 hr
Sep 11, 6:38 PM EDTMesoscale DiscussionSPC97 min
Sep 14, 3:22 PM EDTMesoscale DiscussionSPC53 min
Sep 14, 5:34 PM EDTSevere Thunderstorm WarningLWX41 min
Sep 14, 6:17 PM EDTSpecial Weather StatementLWX43 min
Sep 14, 6:32 PM EDTSevere Thunderstorm WarningLWX43 min
Sep 14, 6:37 PM EDTSevere Thunderstorm WarningLWX38 min
Sep 22, 12:27 AM EDTSpecial Weather StatementLWX63 min
Sep 22, 11:44 AM EDTFlash Flood WatchLWX32 hr
Sep 23, 5:10 AM EDTDense Fog AdvisoryLWX4 hr
Sep 23, 11:13 AM EDTFlash Flood WarningLWX4 hr
Sep 23, 2:57 PM EDTAreal Flood WarningLWX99 min
Sep 23, 9:31 PM EDTDense Fog AdvisoryLWX11 hr
Sep 27, 2:15 PM EDTFlash Flood WatchLWX6 hr
Sep 28, 8:56 PM EDTSpecial Weather StatementLWX34 min
Sep 29, 5:04 AM EDTDense Fog AdvisoryLWX4 hr

By product

Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.

Nearby

Alerts in force nowTornadoes on recordForecastThe radar archive20102012

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. Warning verification from the Mesonet's Cow. Rebuilt daily.