Alert archive / North Carolina / Anson County

Weather alerts in Anson County, North Carolina, 2009

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

Anson County and its neighbors

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

Alerts
109
Warnings
27
Watches
20
Advisories
37
Busiest month
May21 alerts
Busiest day
May 6, 20094 alerts

Over time

By month

Warning verification

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

Anson County, 2009

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings19953%8100%23 min
Flash flood warnings20100%0

Each office's whole area, 2009

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Raleigh, NC: tornado warnings24963%1894%21 min
NWS Raleigh, NC: severe thunderstorm warnings33318146%35688%23 min
NWS Raleigh, NC: flash flood warnings412051%5684%66 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 3, 2:06 AM ESTDense Fog AdvisoryRAH9 hr
Jan 4, 9:58 PM ESTDense Fog AdvisoryRAH8 hr
Jan 7, 3:38 AM ESTWind AdvisoryRAH18 hr
Jan 7, 4:29 AM ESTMesoscale DiscussionSPC91 min
Jan 18, 9:37 PM ESTDense Fog AdvisoryRAH11 hr
Jan 19, 3:59 AM ESTWinter Storm WatchRAH11 hr
Jan 19, 2:31 PM ESTWinter Storm WarningRAH25 hr
Jan 20, 3:34 PM ESTWinter Weather AdvisoryRAH17 hr
Jan 21, 1:20 PM ESTWinter Weather AdvisoryRAH20 hr
Jan 28, 6:05 AM ESTDense Fog AdvisoryRAH4 hr
Feb 3, 12:30 PM ESTWinter Weather AdvisoryRAH20 hr
Feb 11, 10:22 AM ESTFire Weather WatchRAH19 hr
Feb 11, 11:31 AM ESTWind AdvisoryRAH12 hr
Feb 12, 5:36 AM ESTRed Flag WarningRAH14 hr
Feb 28, 4:24 AM ESTWinter Storm WatchRAH24 hr
Feb 28, 10:17 PM ESTWinter Storm WarningRAH33 hr
Mar 1, 6:15 PM ESTRiver Flood WarningRAH17 hr
Mar 2, 11:02 AM ESTWinter Weather AdvisoryRAH22 hr
Mar 18, 3:17 AM EDTDense Fog AdvisoryRAH9 hr
Mar 26, 5:52 AM EDTDense Fog AdvisoryRAH4 hr
Mar 26, 10:41 AM EDTDense Fog AdvisoryRAH79 min
Apr 3, 4:10 AM EDTWind AdvisoryRAH16 hr
Apr 3, 4:47 AM EDTMesoscale DiscussionSPC88 min
Apr 6, 3:37 AM EDTMesoscale DiscussionSPC83 min
Apr 6, 3:47 PM EDTFreeze WatchRAH24 hr
Apr 7, 3:30 PM EDTFreeze WarningRAH16 hr
Apr 10, 8:54 PM EDTMesoscale DiscussionSPC66 min
Apr 10, 10:18 PM EDTSevere Thunderstorm WarningRAH42 min
Apr 16, 3:30 PM EDTFrost AdvisoryRAH18 hr
Apr 22, 10:01 AM EDTRed Flag WarningRAH8 hr
May 5, 5:45 PM EDTTornado WatchSPC5 hr
May 5, 6:53 PM EDTSevere Thunderstorm WarningRAH52 min
May 5, 7:10 PM EDTMesoscale DiscussionSPC65 min
May 5, 8:43 PM EDTMesoscale DiscussionSPC62 min
May 6, 11:40 AM EDTMesoscale DiscussionSPC2 hr
May 6, 2:16 PM EDTTornado WatchSPC6 hr
May 6, 7:29 PM EDTMesoscale DiscussionSPC91 min
May 6, 8:26 PM EDTTornado WatchSPC8 hr
May 7, 5:17 AM EDTMesoscale DiscussionSPC118 min
May 7, 3:03 PM EDTMesoscale DiscussionSPC117 min
May 8, 2:02 PM EDTSevere Thunderstorm WatchSPC4 hr
May 9, 1:17 PM EDTSevere Thunderstorm WatchSPC8 hr
May 12, 5:33 AM EDTDense Fog AdvisoryRAH3 hr
May 28, 3:49 PM EDTMesoscale DiscussionSPC56 min
May 28, 3:54 PM EDTAreal Flood AdvisoryRAH5 hr
May 28, 7:03 PM EDTSevere Thunderstorm WarningRAH42 min
May 28, 7:43 PM EDTSevere Thunderstorm WarningRAH47 min
May 29, 2:22 PM EDTMesoscale DiscussionSPC23 min
May 29, 2:41 PM EDTSevere Thunderstorm WatchSPC8 hr
May 29, 6:01 PM EDTMesoscale DiscussionSPC59 min
May 31, 2:48 PM EDTMesoscale DiscussionSPC117 min
Jun 4, 11:21 AM EDTFlash Flood WatchRAH28 hr
Jun 8, 5:03 AM EDTDense Fog AdvisoryRAH4 hr
Jun 9, 2:31 PM EDTMesoscale DiscussionSPC89 min
Jun 9, 7:00 PM EDTSevere Thunderstorm WarningRAH60 min
Jun 11, 3:47 PM EDTSevere Thunderstorm WatchSPC6 hr
Jun 11, 5:58 PM EDTMesoscale DiscussionSPC62 min
Jun 11, 6:54 PM EDTSevere Thunderstorm WarningRAH51 min
Jun 12, 5:16 PM EDTSevere Thunderstorm WarningRAH31 min
Jun 12, 6:23 PM EDTSevere Thunderstorm WarningRAH22 min
Jun 15, 1:26 PM EDTMesoscale DiscussionSPC64 min
Jun 15, 3:21 PM EDTSevere Thunderstorm WatchSPC8 hr
Jun 16, 4:20 AM EDTFlash Flood WatchRAH9 hr
Jun 17, 3:31 PM EDTSevere Thunderstorm WatchSPC7 hr
Jun 26, 1:17 PM EDTMesoscale DiscussionSPC58 min
Jun 27, 2:06 PM EDTMesoscale DiscussionSPC54 min
Jun 27, 3:16 PM EDTSevere Thunderstorm WatchSPC7 hr
Jun 27, 4:43 PM EDTMesoscale DiscussionSPC62 min
Jun 27, 7:27 PM EDTMesoscale DiscussionSPC63 min
Jul 9, 8:21 PM EDTAreal Flood AdvisoryRAH108 min
Jul 17, 4:28 PM EDTMesoscale DiscussionSPC92 min
Jul 20, 4:15 PM EDTSevere Thunderstorm WarningRAH60 min
Jul 20, 6:20 PM EDTMesoscale DiscussionSPC85 min
Jul 20, 9:11 PM EDTAreal Flood AdvisoryRAH3 hr
Jul 20, 9:29 PM EDTFlash Flood WarningRAH83 min
Jul 27, 1:10 PM EDTSevere Thunderstorm WarningRAH65 min
Jul 27, 2:10 PM EDTSevere Thunderstorm WarningRAH65 min
Jul 27, 2:47 PM EDTAreal Flood AdvisoryRAH3 hr
Jul 27, 9:26 PM EDTAreal Flood AdvisoryRAH6 days
Jul 27, 10:53 PM EDTSevere Thunderstorm WarningRAH19 min
Jul 28, 12:05 AM EDTSevere Thunderstorm WarningRAH40 min
Jul 28, 9:38 PM EDTSevere Thunderstorm WarningRAH67 min
Jul 31, 2:25 PM EDTSevere Thunderstorm WatchSPC6 hr
Jul 31, 3:12 PM EDTSevere Thunderstorm WarningRAH63 min
Aug 5, 7:09 PM EDTSevere Thunderstorm WarningRAH66 min
Aug 5, 8:17 PM EDTSevere Thunderstorm WarningRAH30 min
Aug 9, 2:47 PM EDTHeat AdvisoryRAH29 hr
Aug 11, 3:21 PM EDTSevere Thunderstorm WatchSPC7 hr
Aug 20, 3:57 PM EDTAreal Flood AdvisoryRAH112 min
Aug 20, 4:48 PM EDTSevere Thunderstorm WarningRAH42 min
Aug 22, 6:03 PM EDTMesoscale DiscussionSPC57 min
Sep 25, 4:24 PM EDTFlash Flood WarningRAH97 min
Sep 28, 4:44 PM EDTMesoscale DiscussionSPC61 min
Oct 18, 2:37 AM EDTFrost AdvisoryRAH30 hr
Oct 19, 2:05 AM EDTFrost AdvisoryRAH31 hr
Nov 6, 3:23 AM ESTFrost AdvisoryRAH11 hr
Nov 6, 9:03 AM ESTFreeze WarningRAH24 hr
Nov 10, 2:35 PM ESTFlash Flood WatchRAH54 hr
Nov 11, 3:37 AM ESTWind AdvisoryRAH50 hr
Nov 11, 8:28 AM ESTAreal Flood AdvisoryRAH6 hr
Nov 15, 9:16 PM ESTDense Fog AdvisoryRAH12 hr
Nov 19, 4:13 AM ESTDense Fog AdvisoryRAH6 hr
Nov 19, 9:39 PM ESTDense Fog AdvisoryRAH8 hr
Nov 26, 1:36 AM ESTDense Fog AdvisoryRAH8 hr
Dec 1, 3:27 PM ESTFlash Flood WatchRAH30 hr
Dec 8, 9:10 PM ESTWind AdvisoryRAH24 hr
Dec 13, 7:54 PM ESTDense Fog AdvisoryRAH16 hr
Dec 15, 4:23 AM ESTDense Fog AdvisoryRAH6 hr
Dec 27, 5:40 AM ESTDense Fog AdvisoryRAH2 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.