Alert archive / Virginia / Northampton County

Weather alerts in Northampton County, Virginia, 2013

90 weather alerts in 2013, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Northampton County and its neighbors

Each county as a circle sized by its count in 2013. Tap one for its archive.

Alerts
90
Warnings
4
Watches
13
Advisories
24
Busiest month
June32 alerts
Busiest day
June 10, 20136 alerts

Over time

By month

Warning verification

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

Northampton County, 2013

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings110%1100%12 min
Flash flood warnings00

Each office's whole area, 2013

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Wakefield, VA: tornado warnings18289%3100%16 min
NWS Wakefield, VA: severe thunderstorm warnings977820%28784%21 min
NWS Wakefield, VA: flash flood warnings141029%3197%59 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 11, 7:00 PM ESTDense Fog AdvisoryAKQ16 hr
Jan 12, 6:46 PM ESTDense Fog AdvisoryAKQ17 hr
Jan 13, 6:41 PM ESTDense Fog AdvisoryAKQ6 hr
Jan 17, 4:15 AM ESTWinter Weather AdvisoryAKQ23 hr
Jan 24, 2:15 AM ESTWinter Weather AdvisoryAKQ8 hr
Jan 24, 3:18 PM ESTWinter Weather AdvisoryAKQ30 hr
Jan 30, 4:18 AM ESTWind AdvisoryAKQ26 hr
Jan 30, 11:59 PM ESTTornado WatchSPC5 hr
Jan 31, 12:52 AM ESTMesoscale DiscussionSPC83 min
Feb 8, 3:21 AM ESTCoastal Flood AdvisoryAKQ6 hr
Feb 16, 3:52 AM ESTWinter Weather AdvisoryAKQ21 hr
Feb 26, 9:31 PM ESTCoastal Flood AdvisoryAKQ104 min
Mar 5, 2:54 PM ESTCoastal Flood WarningAKQ48 hr
Mar 6, 4:50 AM ESTWind AdvisoryAKQ22 hr
Mar 6, 1:46 PM ESTCoastal Flood AdvisoryAKQ4 hr
Mar 7, 9:41 AM ESTCoastal Flood AdvisoryAKQ47 hr
Mar 9, 1:10 PM ESTCoastal Flood AdvisoryAKQ20 hr
Mar 10, 11:02 AM EDTCoastal Flood AdvisoryAKQ11 hr
Apr 1, 5:37 AM EDTDense Fog AdvisoryAKQ3 hr
Apr 12, 2:34 PM EDTMesoscale DiscussionSPC116 min
Apr 19, 6:27 PM EDTSevere Thunderstorm WatchSPC4 hr
Apr 19, 8:50 PM EDTMesoscale DiscussionSPC55 min
Apr 21, 1:51 PM EDTHigh Surf AdvisoryAKQ50 hr
Apr 23, 6:22 AM EDTCoastal Flood AdvisoryAKQ19 hr
May 11, 1:44 PM EDTMesoscale DiscussionSPC91 min
May 11, 7:11 PM EDTMesoscale DiscussionSPC64 min
Jun 3, 10:41 AM EDTSpecial Weather StatementAKQ64 min
Jun 3, 11:17 AM EDTSpecial Weather StatementAKQ58 min
Jun 6, 3:55 PM EDTFlood WatchAKQ31 hr
Jun 6, 6:25 PM EDTBeach Hazards StatementAKQ26 hr
Jun 7, 5:37 AM EDTTornado WatchSPC7 hr
Jun 7, 8:35 AM EDTMesoscale DiscussionSPC85 min
Jun 7, 1:00 PM EDTTornado WatchSPC7 hr
Jun 7, 3:32 PM EDTMesoscale DiscussionSPC58 min
Jun 7, 6:40 PM EDTMesoscale DiscussionSPC2 hr
Jun 7, 8:46 PM EDTSpecial Weather StatementAKQ59 min
Jun 8, 1:05 PM EDTSpecial Weather StatementAKQ55 min
Jun 10, 2:57 AM EDTFlash Flood WatchAKQ21 hr
Jun 10, 12:56 PM EDTMesoscale DiscussionSPC2 hr
Jun 10, 2:02 PM EDTTornado WatchSPC10 hr
Jun 10, 3:00 PM EDTSpecial Weather StatementAKQ60 min
Jun 10, 4:38 PM EDTMesoscale DiscussionSPC97 min
Jun 10, 6:49 PM EDTMesoscale DiscussionSPC86 min
Jun 10, 8:41 PM EDTMesoscale DiscussionSPC64 min
Jun 13, 2:40 AM EDTMesoscale DiscussionSPC2 hr
Jun 13, 11:38 AM EDTMesoscale DiscussionSPC67 min
Jun 13, 1:53 PM EDTMesoscale DiscussionSPC97 min
Jun 13, 2:08 PM EDTSevere Thunderstorm Watch PDSSPC8 hr
Jun 13, 4:22 PM EDTMesoscale DiscussionSPC53 min
Jun 13, 5:16 PM EDTSevere Thunderstorm WarningAKQ44 min
Jun 18, 6:09 PM EDTSpecial Weather StatementAKQ66 min
Jun 25, 11:15 PM EDTMesoscale DiscussionSPC90 min
Jun 26, 2:55 PM EDTSevere Thunderstorm WatchSPC7 hr
Jun 27, 8:00 PM EDTSpecial Weather StatementAKQ60 min
Jun 28, 2:51 PM EDTSevere Thunderstorm WatchSPC7 hr
Jun 28, 4:42 PM EDTMesoscale DiscussionSPC93 min
Jun 28, 6:47 PM EDTMesoscale DiscussionSPC58 min
Jun 30, 3:56 PM EDTFlash Flood WatchAKQ54 hr
Jul 2, 3:50 PM EDTSpecial Weather StatementAKQ70 min
Jul 11, 1:42 PM EDTFlash Flood WatchAKQ32 hr
Jul 13, 9:54 AM EDTSpecial Weather StatementAKQ66 min
Jul 18, 3:29 AM EDTHeat AdvisoryAKQ15 hr
Jul 21, 8:15 PM EDTSpecial Weather StatementAKQ90 min
Jul 25, 1:59 AM EDTSpecial Weather StatementAKQ31 min
Jul 25, 2:36 AM EDTSpecial Weather StatementAKQ24 min
Jul 25, 2:59 AM EDTSpecial Weather StatementAKQ46 min
Jul 25, 3:44 AM EDTSpecial Weather StatementAKQ46 min
Aug 1, 4:58 PM EDTSpecial Weather StatementAKQ77 min
Aug 1, 9:28 PM EDTSpecial Weather StatementAKQ17 min
Aug 3, 12:04 PM EDTMesoscale DiscussionSPC116 min
Aug 3, 2:37 PM EDTSpecial Weather StatementAKQ38 min
Aug 10, 11:56 AM EDTMesoscale DiscussionSPC94 min
Aug 10, 1:22 PM EDTMesoscale DiscussionSPC53 min
Aug 10, 1:48 PM EDTSevere Thunderstorm WatchSPC5 hr
Aug 10, 4:17 PM EDTMesoscale DiscussionSPC58 min
Aug 22, 2:26 PM EDTMesoscale DiscussionSPC3 hr
Sep 3, 11:12 AM EDTMesoscale DiscussionSPC3 hr
Oct 7, 4:22 PM EDTSpecial Weather StatementAKQ53 min
Oct 8, 9:22 AM EDTCoastal Flood AdvisoryAKQ7 days
Oct 8, 10:43 PM EDTHigh Surf AdvisoryAKQ43 hr
Oct 15, 6:59 AM EDTCoastal Flood StatementAKQ15 hr
Oct 25, 4:53 PM EDTFrost AdvisoryAKQ16 hr
Nov 12, 1:46 PM ESTFreeze WarningAKQ18 hr
Nov 13, 3:31 PM ESTFreeze WarningAKQ16 hr
Nov 17, 4:11 AM ESTDense Fog AdvisoryAKQ6 hr
Nov 26, 3:06 PM ESTWind AdvisoryAKQ13 hr
Dec 17, 8:58 PM ESTSpecial Weather StatementAKQ47 min
Dec 17, 9:49 PM ESTSpecial Weather StatementAKQ56 min
Dec 23, 6:38 AM ESTSpecial Weather StatementAKQ52 min
Dec 23, 11:12 AM ESTSpecial Weather StatementAKQ48 min

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 archive20122014

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.