Alert archive / Maryland / Talbot County

Weather alerts in Talbot County, Maryland, 2009

125 weather alerts in 2009, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Talbot County and its neighbors

Each county as a circle sized by its count in 2009. Tap one for its archive.

Alerts
125
Warnings
27
Watches
19
Advisories
35
Busiest month
August27 alerts
Busiest day
May 29, 20096 alerts

Over time

By month

Warning verification

How often warnings here had a storm report inside them, and how much warning the reports had.

0 of 1 tornado warnings covering Talbot County in 2009 had a tornado report inside them.

Talbot County, 2009

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings10100%0
Severe thunderstorm warnings16850%250%19 min
Flash flood warnings3233%1100%112 min

Each office's whole area, 2009

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Philadelphia/Mount Holly: tornado warnings13192%250%38 min
NWS Philadelphia/Mount Holly: severe thunderstorm warnings23511352%26082%26 min
NWS Philadelphia/Mount Holly: flash flood warnings672070%6962%85 min

An office's figures cover every county it serves, including across state lines.

Verified by the Iowa Environmental Mesonet's Cow, which matches each storm-based warning with the local storm reports inside its polygon while it was in force, within 15 km of its edge: a tornado warning counts as verified on a tornado report, a severe thunderstorm warning on hail of 1 inch or more, a gust of 58 mph or more, or wind damage, a flash flood warning on a flash flood report. The false alarm ratio is the share of warnings with no such report; "inside a warning" is the probability of detection, the share of reports that fell inside one; lead time runs from the warning's issue to each report inside it, counting zero for a report that came first. A warning with no report is not proof nothing happened: reports come from spotters, the public and damage surveys, and are thin where few people live.

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
Jan 27, 3:18 AM ESTWinter Storm WarningPHI40 hr
Jan 27, 3:18 AM ESTWinter Weather AdvisoryPHI27 hr
Jan 28, 12:31 AM ESTMesoscale DiscussionSPC5 hr
Jan 28, 10:01 AM ESTDense Fog AdvisoryPHI7 hr
Feb 2, 2:53 PM ESTWinter Weather AdvisoryPHI37 hr
Feb 11, 2:50 PM ESTWind AdvisoryPHI13 hr
Feb 11, 10:14 PM ESTMesoscale DiscussionSPC61 min
Feb 12, 3:30 AM ESTHigh Wind WarningPHI16 hr
Feb 12, 6:51 PM ESTWind AdvisoryPHI5 hr
Feb 28, 4:10 AM ESTWinter Storm WatchPHI23 hr
Mar 1, 3:30 AM ESTWinter Storm WarningPHI37 hr
Mar 1, 5:01 PM ESTMesoscale DiscussionSPC2 hr
Mar 1, 9:09 PM ESTMesoscale DiscussionSPC4 hr
Mar 2, 5:38 AM ESTMesoscale DiscussionSPC3 hr
Mar 9, 4:12 AM EDTWind AdvisoryPHI12 hr
Mar 23, 4:23 AM EDTRed Flag WarningPHI19 hr
Apr 3, 3:08 PM EDTWind AdvisoryPHI29 hr
Apr 16, 3:01 PM EDTFrost AdvisoryPHI17 hr
Apr 21, 7:31 PM EDTSevere Thunderstorm WarningPHI44 min
Apr 23, 4:00 AM EDTFrost AdvisoryPHI28 hr
Apr 28, 10:34 AM EDTRed Flag WarningPHI9 hr
May 1, 1:03 PM EDTMesoscale DiscussionSPC117 min
May 7, 12:10 AM EDTMesoscale DiscussionSPC95 min
May 9, 5:58 PM EDTMesoscale DiscussionSPC62 min
May 9, 6:25 PM EDTSevere Thunderstorm WatchSPC4 hr
May 29, 12:20 PM EDTMesoscale DiscussionSPC55 min
May 29, 1:26 PM EDTSevere Thunderstorm WatchSPC8 hr
May 29, 3:22 PM EDTSevere Thunderstorm WarningPHI68 min
May 29, 4:30 PM EDTMesoscale DiscussionSPC60 min
May 29, 4:45 PM EDTSevere Thunderstorm WarningPHI50 min
May 29, 6:20 PM EDTMesoscale DiscussionSPC55 min
Jun 2, 1:31 PM EDTMesoscale DiscussionSPC89 min
Jun 2, 1:58 PM EDTSevere Thunderstorm WatchSPC6 hr
Jun 2, 4:18 PM EDTMesoscale DiscussionSPC87 min
Jun 3, 12:41 PM EDTMesoscale DiscussionSPC64 min
Jun 3, 1:06 PM EDTSevere Thunderstorm WatchSPC9 hr
Jun 3, 4:34 PM EDTMesoscale DiscussionSPC86 min
Jun 3, 7:10 PM EDTMesoscale DiscussionSPC95 min
Jun 9, 6:01 AM EDTMesoscale DiscussionSPC59 min
Jun 9, 5:13 PM EDTSevere Thunderstorm WarningPHI92 min
Jun 11, 5:58 PM EDTSevere Thunderstorm WarningPHI47 min
Jun 17, 1:23 PM EDTCoastal Flood AdvisoryPHI19 hr
Jun 18, 11:40 AM EDTMesoscale DiscussionSPC95 min
Jun 18, 12:08 PM EDTCoastal Flood AdvisoryPHI4 hr
Jun 18, 2:21 PM EDTSevere Thunderstorm WatchSPC9 hr
Jun 18, 3:31 PM EDTMesoscale DiscussionSPC59 min
Jun 20, 1:55 PM EDTMesoscale DiscussionSPC95 min
Jun 20, 3:05 PM EDTTornado WatchSPC5 hr
Jun 20, 3:57 PM EDTSevere Thunderstorm WarningPHI66 min
Jun 20, 4:06 PM EDTTornado WarningPHI32 min
Jun 26, 2:42 PM EDTSevere Thunderstorm WatchSPC7 hr
Jun 26, 7:33 PM EDTMesoscale DiscussionSPC57 min
Jun 26, 9:10 PM EDTSevere Thunderstorm WarningPHI24 min
Jun 26, 9:11 PM EDTMesoscale DiscussionSPC64 min
Jul 1, 12:03 PM EDTMesoscale DiscussionSPC87 min
Jul 1, 12:48 PM EDTMesoscale DiscussionSPC57 min
Jul 12, 12:21 PM EDTMesoscale DiscussionSPC54 min
Jul 17, 12:59 PM EDTMesoscale DiscussionSPC91 min
Jul 24, 3:34 PM EDTMesoscale DiscussionSPC86 min
Jul 25, 9:41 PM EDTSevere Thunderstorm WarningPHI64 min
Jul 25, 10:29 PM EDTSevere Thunderstorm WarningPHI61 min
Jul 26, 1:40 PM EDTMesoscale DiscussionSPC2 hr
Jul 26, 2:07 PM EDTSevere Thunderstorm WatchSPC7 hr
Jul 26, 4:16 PM EDTMesoscale DiscussionSPC89 min
Jul 26, 4:19 PM EDTSevere Thunderstorm WarningPHI44 min
Jul 29, 12:49 PM EDTSevere Thunderstorm WatchSPC8 hr
Jul 29, 1:32 PM EDTMesoscale DiscussionSPC28 min
Jul 29, 8:36 PM EDTAreal Flood AdvisoryPHI101 min
Jul 31, 12:06 PM EDTMesoscale DiscussionSPC84 min
Jul 31, 1:18 PM EDTSevere Thunderstorm WatchSPC7 hr
Jul 31, 3:05 PM EDTMesoscale DiscussionSPC85 min
Jul 31, 4:34 PM EDTMesoscale DiscussionSPC86 min
Aug 2, 11:33 AM EDTMesoscale DiscussionSPC2 hr
Aug 2, 12:10 PM EDTSevere Thunderstorm WarningPHI65 min
Aug 2, 12:13 PM EDTAreal Flood AdvisoryPHI3 hr
Aug 9, 1:56 PM EDTHeat AdvisoryPHI30 hr
Aug 9, 5:33 PM EDTSevere Thunderstorm WatchSPC4 hr
Aug 10, 11:06 PM EDTSevere Thunderstorm WarningPHI54 min
Aug 11, 8:09 PM EDTSevere Thunderstorm WarningPHI66 min
Aug 11, 9:04 PM EDTSevere Thunderstorm WarningPHI26 min
Aug 12, 4:16 PM EDTAreal Flood AdvisoryPHI3 hr
Aug 13, 3:36 AM EDTFlood WatchPHI36 min
Aug 13, 4:12 AM EDTFlash Flood WatchPHI15 hr
Aug 18, 8:35 PM EDTSevere Thunderstorm WarningPHI55 min
Aug 19, 6:05 PM EDTMesoscale DiscussionSPC55 min
Aug 21, 12:16 PM EDTMesoscale DiscussionSPC119 min
Aug 21, 12:36 PM EDTSevere Thunderstorm WatchSPC7 hr
Aug 21, 2:47 PM EDTFlash Flood WatchPHI35 hr
Aug 21, 3:21 PM EDTMesoscale DiscussionSPC84 min
Aug 21, 3:48 PM EDTSevere Thunderstorm WarningPHI57 min
Aug 21, 7:30 PM EDTMesoscale DiscussionSPC60 min
Aug 21, 11:49 PM EDTAreal Flood AdvisoryPHI116 min
Aug 22, 2:19 AM EDTAreal Flood AdvisoryPHI6 hr
Aug 22, 8:12 AM EDTAreal Flood AdvisoryPHI3 hr
Aug 22, 3:53 PM EDTFlash Flood WarningPHI6 hr
Aug 28, 12:24 PM EDTMesoscale DiscussionSPC2 hr
Aug 28, 2:53 PM EDTFlash Flood WarningPHI6 hr
Aug 28, 3:21 PM EDTFlash Flood WarningPHI6 hr
Aug 28, 6:49 PM EDTAreal Flood AdvisoryPHI5 hr
Sep 18, 2:00 PM EDTCoastal Flood AdvisoryPHI8 hr
Sep 26, 7:55 PM EDTCoastal Flood AdvisoryPHI8 hr
Sep 27, 7:45 AM EDTCoastal Flood AdvisoryPHI9 hr
Oct 4, 2:24 AM EDTDense Fog AdvisoryPHI7 hr
Oct 16, 4:09 PM EDTCoastal Flood AdvisoryPHI36 hr
Oct 18, 2:04 PM EDTFrost AdvisoryPHI19 hr
Oct 19, 1:12 PM EDTFrost AdvisoryPHI18 hr
Oct 24, 12:19 PM EDTMesoscale DiscussionSPC116 min
Oct 30, 9:14 AM EDTCoastal Flood AdvisoryPHI8 hr
Nov 2, 2:55 PM ESTFreeze WatchPHI11 hr
Nov 3, 2:09 AM ESTFrost AdvisoryPHI30 hr
Nov 11, 3:09 PM ESTCoastal Flood WarningPHI67 hr
Nov 12, 3:00 AM ESTCoastal Flood AdvisoryPHI3 days
Nov 27, 3:16 PM ESTWind AdvisoryPHI24 hr
Dec 3, 12:12 AM ESTMesoscale DiscussionSPC93 min
Dec 8, 2:40 PM ESTFlash Flood WatchPHI21 hr
Dec 9, 7:08 AM ESTAreal Flood AdvisoryPHI4 hr
Dec 9, 12:00 PM ESTWind AdvisoryPHI33 hr
Dec 17, 3:30 PM ESTWinter Storm WatchPHI22 hr
Dec 18, 4:40 AM ESTWinter Storm WarningPHI46 hr
Dec 19, 12:34 AM ESTMesoscale DiscussionSPC5 hr
Dec 19, 6:57 AM ESTMesoscale DiscussionSPC6 hr
Dec 19, 12:27 PM ESTMesoscale DiscussionSPC6 hr
Dec 26, 7:42 AM ESTCoastal Flood AdvisoryPHI15 hr
Dec 28, 1:42 PM ESTWind AdvisoryPHI27 hr
Dec 31, 3:22 AM ESTWinter Weather AdvisoryPHI8 hr

By product

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

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force nowTornadoes on recordForecastThe radar archive20082010

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.