Alert archive / Virginia / Northampton County

Weather alerts in Northampton County, Virginia, 2010

116 weather alerts in 2010, 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 2010. Tap one for its archive.

Alerts
116
Warnings
14
Watches
15
Advisories
35
Busiest month
August30 alerts
Busiest day
August 5, 20107 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 Northampton County in 2010 had a tornado report inside them; 0 of 2 tornado reports fell inside a warning.

Northampton County, 2010

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings10100%20%
Severe thunderstorm warnings6433%3100%26 min
Flash flood warnings00

Each office's whole area, 2010

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Wakefield, VA: tornado warnings50688%1656%19 min
NWS Wakefield, VA: severe thunderstorm warnings17013322%36282%23 min
NWS Wakefield, VA: flash flood warnings11918%1889%94 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 1, 1:15 AM ESTDense Fog AdvisoryAKQ8 hr
Jan 7, 3:57 PM ESTWinter Weather AdvisoryAKQ18 hr
Jan 28, 3:56 AM ESTWinter Storm WatchAKQ36 hr
Jan 29, 4:04 AM ESTWinter Storm WarningAKQ48 hr
Jan 30, 8:10 AM ESTMesoscale DiscussionSPC5 hr
Jan 30, 8:53 AM ESTHigh Surf AdvisoryAKQ20 hr
Feb 4, 3:21 PM ESTFlood WatchAKQ37 hr
Feb 4, 4:07 PM ESTCoastal Flood AdvisoryAKQ60 hr
Feb 5, 3:26 AM ESTHigh Surf AdvisoryAKQ51 hr
Feb 5, 3:52 AM ESTWind AdvisoryAKQ41 hr
Feb 5, 3:29 PM ESTWinter Weather AdvisoryAKQ26 hr
Feb 5, 4:05 PM ESTHigh Wind WarningAKQ29 hr
Feb 9, 3:26 AM ESTWinter Weather AdvisoryAKQ43 hr
Feb 9, 2:41 PM ESTWind AdvisoryAKQ32 hr
Feb 24, 3:28 PM ESTWinter Weather AdvisoryAKQ21 hr
Feb 25, 4:08 AM ESTWind AdvisoryAKQ37 hr
Mar 2, 5:22 AM ESTCoastal Flood AdvisoryAKQ44 hr
Mar 12, 4:11 AM ESTWind AdvisoryAKQ24 hr
Mar 12, 4:35 AM ESTFlood WatchAKQ24 hr
Mar 12, 3:56 PM ESTHigh Surf AdvisoryAKQ24 hr
Mar 13, 1:12 PM ESTCoastal Flood AdvisoryAKQ3 days
Mar 29, 1:54 AM EDTMesoscale DiscussionSPC36 min
Mar 29, 7:15 AM EDTAreal Flood AdvisoryAKQ3 hr
Mar 29, 9:57 AM EDTAreal Flood AdvisoryAKQ93 min
Mar 29, 11:40 AM EDTAreal Flood AdvisoryAKQ110 min
Apr 26, 6:13 PM EDTMesoscale DiscussionSPC62 min
May 12, 6:38 PM EDTSevere Thunderstorm WarningAKQ52 min
Jun 1, 6:57 PM EDTSpecial Weather StatementAKQ48 min
Jun 12, 6:59 PM EDTSpecial Weather StatementAKQ61 min
Jun 14, 9:33 PM EDTSpecial Weather StatementAKQ57 min
Jun 16, 8:31 AM EDTSpecial Weather StatementAKQ59 min
Jun 16, 4:07 PM EDTMesoscale DiscussionSPC83 min
Jun 26, 1:33 PM EDTMesoscale DiscussionSPC57 min
Jul 9, 5:35 AM EDTCoastal Flood StatementAKQ12 hr
Jul 19, 6:18 PM EDTSpecial Weather StatementAKQ42 min
Jul 19, 6:19 PM EDTSevere Thunderstorm WarningAKQ41 min
Jul 21, 3:35 AM EDTHeat AdvisoryAKQ14 hr
Jul 22, 3:18 PM EDTHeat AdvisoryAKQ28 hr
Jul 23, 2:57 PM EDTHeat AdvisoryAKQ29 hr
Jul 24, 3:44 PM EDTHeat AdvisoryAKQ28 hr
Jul 29, 11:36 AM EDTMesoscale DiscussionSPC54 min
Jul 29, 11:54 AM EDTSevere Thunderstorm WatchSPC7 hr
Jul 29, 4:20 PM EDTMesoscale DiscussionSPC55 min
Jul 29, 6:13 PM EDTSevere Thunderstorm WarningAKQ62 min
Aug 4, 4:04 PM EDTHeat AdvisoryAKQ27 hr
Aug 4, 8:36 PM EDTSevere Thunderstorm WatchSPC4 hr
Aug 5, 1:19 PM EDTSevere Thunderstorm WatchSPC9 hr
Aug 5, 3:56 PM EDTMesoscale DiscussionSPC64 min
Aug 5, 6:23 PM EDTMesoscale DiscussionSPC97 min
Aug 5, 7:20 PM EDTSevere Thunderstorm WarningAKQ40 min
Aug 5, 7:43 PM EDTSevere Thunderstorm WarningAKQ62 min
Aug 5, 7:53 PM EDTSevere Thunderstorm WarningAKQ37 min
Aug 5, 9:21 PM EDTAreal Flood AdvisoryAKQ114 min
Aug 6, 9:21 PM EDTSpecial Weather StatementAKQ69 min
Aug 6, 9:51 PM EDTSpecial Weather StatementAKQ59 min
Aug 9, 3:16 AM EDTDense Fog AdvisoryAKQ5 hr
Aug 12, 9:29 AM EDTMesoscale DiscussionSPC91 min
Aug 12, 9:39 AM EDTSpecial Weather StatementAKQ36 min
Aug 12, 10:18 AM EDTSpecial Weather StatementAKQ42 min
Aug 12, 10:34 AM EDTSevere Thunderstorm WatchSPC9 hr
Aug 12, 11:51 AM EDTSpecial Weather StatementAKQ69 min
Aug 12, 12:41 PM EDTMesoscale DiscussionSPC94 min
Aug 12, 4:45 PM EDTMesoscale DiscussionSPC60 min
Aug 13, 4:43 AM EDTCoastal Flood StatementAKQ39 hr
Aug 14, 10:37 PM EDTCoastal Flood StatementAKQ21 hr
Aug 18, 3:12 PM EDTSpecial Weather StatementAKQ63 min
Aug 24, 1:33 PM EDTCoastal Flood AdvisoryAKQ21 hr
Aug 28, 4:21 AM EDTCoastal Flood StatementAKQ15 hr
Aug 28, 7:02 PM EDTCoastal Flood StatementAKQ25 hr
Aug 28, 11:00 PM EDTHurricane WatchNHC5 days
Aug 29, 11:00 AM EDTTropical Storm WarningNHC7 days
Aug 30, 4:55 PM EDTCoastal Flood StatementAKQ12 hr
Aug 31, 3:54 PM EDTCoastal Flood StatementAKQ20 hr
Aug 31, 5:43 PM EDTHurricane WatchAKQ60 hr
Sep 1, 5:13 PM EDTTropical Storm WarningAKQ48 hr
Sep 3, 5:22 PM EDTCoastal Flood StatementAKQ27 hr
Sep 18, 8:43 AM EDTCoastal Flood StatementAKQ3 days
Sep 27, 2:02 PM EDTSpecial Weather StatementAKQ58 min
Sep 27, 2:42 PM EDTSpecial Weather StatementAKQ63 min
Sep 28, 8:00 AM EDTMesoscale DiscussionSPC2 hr
Sep 29, 4:41 AM EDTFlash Flood WatchAKQ47 hr
Sep 29, 4:00 PM EDTWind AdvisoryAKQ28 hr
Sep 29, 4:07 PM EDTHigh Surf AdvisoryAKQ38 hr
Sep 29, 7:37 PM EDTSpecial Weather StatementAKQ38 min
Sep 30, 4:02 AM EDTMesoscale DiscussionSPC118 min
Sep 30, 4:55 AM EDTTornado WatchSPC8 hr
Sep 30, 8:25 AM EDTMesoscale DiscussionSPC95 min
Sep 30, 10:49 AM EDTMesoscale DiscussionSPC116 min
Sep 30, 5:43 PM EDTMesoscale DiscussionSPC92 min
Oct 1, 12:01 AM EDTMesoscale DiscussionSPC89 min
Oct 3, 8:17 PM EDTHigh Surf AdvisoryAKQ21 hr
Oct 27, 5:28 AM EDTMesoscale DiscussionSPC2 hr
Oct 27, 12:13 PM EDTTornado WatchSPC8 hr
Oct 27, 7:16 PM EDTMesoscale DiscussionSPC59 min
Oct 27, 7:46 PM EDTTornado WatchSPC8 hr
Oct 27, 10:31 PM EDTTornado WarningAKQ44 min
Oct 27, 10:41 PM EDTMesoscale DiscussionSPC64 min
Oct 28, 12:54 AM EDTMesoscale DiscussionSPC66 min
Nov 7, 4:26 AM ESTCoastal Flood StatementAKQ15 hr
Nov 10, 3:47 PM ESTHigh Surf AdvisoryAKQ71 hr
Nov 12, 3:39 AM ESTCoastal Flood AdvisoryAKQ30 hr
Nov 14, 11:37 PM ESTDense Fog AdvisoryAKQ7 hr
Nov 17, 2:36 AM ESTSpecial Weather StatementAKQ54 min
Nov 22, 2:30 AM ESTDense Fog AdvisoryAKQ7 hr
Dec 1, 5:18 AM ESTMesoscale DiscussionSPC117 min
Dec 1, 6:12 AM ESTTornado WatchSPC4 hr
Dec 1, 7:51 AM ESTMesoscale DiscussionSPC84 min
Dec 1, 10:14 AM ESTSpecial Weather StatementAKQ61 min
Dec 15, 3:11 PM ESTWinter Storm WarningAKQ28 hr
Dec 15, 3:11 PM ESTWinter Weather AdvisoryAKQ30 hr
Dec 16, 11:00 AM ESTMesoscale DiscussionSPC4 hr
Dec 24, 3:51 PM ESTWinter Storm WatchAKQ24 hr
Dec 25, 12:02 PM ESTWinter Storm WarningAKQ39 hr
Dec 26, 4:09 AM ESTMesoscale DiscussionSPC6 hr
Dec 26, 3:36 PM ESTBlizzard WarningAKQ12 hr
Dec 27, 9:02 AM ESTWind AdvisoryAKQ10 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 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. Warning verification from the Mesonet's Cow. Rebuilt daily.