Alert archive / Virginia / Northampton County

Weather alerts in Northampton County, Virginia, 2008

120 weather alerts in 2008, 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 2008. Tap one for its archive.

Alerts
120
Warnings
21
Watches
24
Advisories
27
Busiest month
September25 alerts
Busiest day
May 9, 20085 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 3 tornado warnings covering Northampton County in 2008 had a tornado report inside them.

Northampton County, 2008

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings30100%0
Severe thunderstorm warnings12375%333%10 min
Flash flood warnings00

Each office's whole area, 2008

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Wakefield, VA: tornado warnings702071%6560%11 min
NWS Wakefield, VA: severe thunderstorm warnings28813852%33373%22 min
NWS Wakefield, VA: flash flood warnings191237%2959%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 18, 11:45 AM ESTWinter Storm WatchAKQ17 hr
Jan 19, 4:50 AM ESTWinter Weather AdvisoryAKQ22 hr
Feb 9, 4:48 AM ESTFire Weather WatchAKQ12 hr
Feb 9, 3:49 PM ESTWind AdvisoryAKQ32 hr
Feb 9, 4:35 PM ESTRed Flag WarningAKQ28 hr
Feb 13, 10:10 PM ESTWinter Weather AdvisoryAKQ10 hr
Feb 18, 3:45 AM ESTMesoscale DiscussionSPC30 min
Feb 18, 3:59 AM ESTTornado WatchSPC6 hr
Feb 18, 6:18 AM ESTMesoscale DiscussionSPC57 min
Feb 22, 12:40 AM ESTMesoscale DiscussionSPC6 hr
Mar 5, 1:14 AM ESTSevere Thunderstorm WarningAKQ46 min
Mar 7, 3:00 PM ESTWind AdvisoryAKQ30 hr
Mar 8, 11:00 AM ESTMesoscale DiscussionSPC60 min
Mar 20, 5:02 AM EDTWind AdvisoryAKQ16 hr
Apr 6, 4:18 AM EDTCoastal Flood AdvisoryAKQ46 hr
Apr 6, 4:46 AM EDTHigh Surf AdvisoryAKQ3 days
Apr 10, 2:50 AM EDTDense Fog AdvisoryAKQ5 hr
Apr 10, 3:39 PM EDTDense Fog AdvisoryAKQ17 hr
Apr 12, 11:59 AM EDTSevere Thunderstorm WatchSPC6 hr
Apr 12, 3:39 PM EDTMesoscale DiscussionSPC2 hr
Apr 20, 7:14 PM EDTMesoscale DiscussionSPC61 min
Apr 20, 8:01 PM EDTTornado WatchSPC5 hr
Apr 20, 11:08 PM EDTMesoscale DiscussionSPC67 min
Apr 21, 4:24 AM EDTCoastal Flood StatementAKQ20 hr
Apr 24, 12:21 AM EDTDense Fog AdvisoryAKQ8 hr
Apr 28, 4:28 PM EDTMesoscale DiscussionSPC92 min
Apr 28, 5:10 PM EDTTornado WarningAKQ35 min
Apr 28, 5:44 PM EDTSevere Thunderstorm WarningAKQ36 min
Apr 28, 5:53 PM EDTTornado WarningAKQ37 min
May 9, 2:32 AM EDTMesoscale DiscussionSPC88 min
May 9, 3:00 AM EDTTornado WatchSPC8 hr
May 9, 5:04 AM EDTMesoscale DiscussionSPC56 min
May 9, 6:37 AM EDTMesoscale DiscussionSPC53 min
May 9, 8:29 AM EDTMesoscale DiscussionSPC61 min
May 11, 7:43 PM EDTAreal Flood AdvisoryAKQ3 hr
May 12, 4:08 AM EDTWind AdvisoryAKQ20 hr
May 12, 4:58 AM EDTCoastal Flood WarningAKQ37 hr
May 12, 10:16 AM EDTHigh Wind WarningAKQ8 hr
May 12, 11:08 AM EDTHigh Surf AdvisoryAKQ35 hr
May 16, 2:20 PM EDTMesoscale DiscussionSPC55 min
May 20, 1:09 PM EDTSevere Thunderstorm WatchSPC7 hr
May 20, 3:43 PM EDTSevere Thunderstorm WarningAKQ37 min
May 31, 12:05 PM EDTMesoscale DiscussionSPC55 min
May 31, 3:07 PM EDTTornado WatchSPC6 hr
May 31, 6:30 PM EDTSevere Thunderstorm WarningAKQ90 min
May 31, 7:37 PM EDTMesoscale DiscussionSPC53 min
May 31, 10:31 PM EDTTornado WarningAKQ29 min
Jun 1, 6:58 PM EDTMesoscale DiscussionSPC92 min
Jun 4, 11:12 PM EDTSevere Thunderstorm WarningAKQ33 min
Jun 5, 12:34 AM EDTSevere Thunderstorm WarningAKQ26 min
Jun 6, 2:34 PM EDTMesoscale DiscussionSPC2 hr
Jun 6, 3:13 PM EDTHeat AdvisoryAKQ4 days
Jun 14, 4:31 AM EDTDense Smoke AdvisoryAKQ15 hr
Jun 16, 4:35 PM EDTSevere Thunderstorm WatchSPC3 hr
Jun 16, 6:49 PM EDTSevere Thunderstorm WarningAKQ56 min
Jun 16, 6:55 PM EDTMesoscale DiscussionSPC95 min
Jun 27, 11:37 AM EDTMesoscale DiscussionSPC2 hr
Jun 29, 4:37 PM EDTSevere Thunderstorm WatchSPC9 hr
Jun 29, 10:05 PM EDTSevere Thunderstorm WarningAKQ25 min
Jul 4, 9:09 PM EDTSevere Thunderstorm WarningAKQ51 min
Jul 8, 12:34 PM EDTMesoscale DiscussionSPC86 min
Jul 8, 3:48 PM EDTMesoscale DiscussionSPC57 min
Jul 8, 4:21 PM EDTSevere Thunderstorm WarningAKQ54 min
Jul 12, 10:37 AM EDTCoastal Flood StatementAKQ57 hr
Jul 22, 9:46 AM EDTMesoscale DiscussionSPC59 min
Jul 22, 10:03 AM EDTSevere Thunderstorm WatchSPC6 hr
Jul 22, 11:56 AM EDTMesoscale DiscussionSPC2 hr
Jul 23, 12:33 PM EDTMesoscale DiscussionSPC57 min
Jul 23, 12:44 PM EDTSevere Thunderstorm WatchSPC7 hr
Jul 23, 2:10 PM EDTFlash Flood WatchAKQ16 hr
Jul 23, 3:54 PM EDTMesoscale DiscussionSPC66 min
Jul 23, 7:28 PM EDTMesoscale DiscussionSPC62 min
Jul 27, 1:04 PM EDTSevere Thunderstorm WatchSPC7 hr
Jul 27, 1:26 PM EDTMesoscale DiscussionSPC2 hr
Jul 27, 6:53 PM EDTAreal Flood AdvisoryAKQ2 hr
Jul 30, 2:23 PM EDTMesoscale DiscussionSPC97 min
Aug 2, 4:05 PM EDTSevere Thunderstorm WatchSPC6 hr
Aug 2, 6:00 PM EDTSevere Thunderstorm WarningAKQ45 min
Aug 2, 7:09 PM EDTMesoscale DiscussionSPC96 min
Aug 10, 9:44 PM EDTSevere Thunderstorm WarningAKQ31 min
Aug 15, 1:18 PM EDTSevere Thunderstorm WatchSPC8 hr
Sep 1, 5:48 PM EDTCoastal Flood StatementAKQ21 hr
Sep 4, 5:00 AM EDTTropical Storm WatchNHC48 hr
Sep 4, 5:00 PM EDTTropical Storm WarningNHC60 hr
Sep 4, 5:14 PM EDTTropical Storm WatchAKQ19 hr
Sep 4, 5:14 PM EDTTropical Storm WarningAKQ43 hr
Sep 6, 3:33 AM EDTMesoscale DiscussionSPC87 min
Sep 6, 4:45 AM EDTTornado WatchSPC8 hr
Sep 6, 8:40 AM EDTMesoscale DiscussionSPC2 hr
Sep 6, 8:42 PM EDTCoastal Flood StatementAKQ6 hr
Sep 9, 8:35 AM EDTMesoscale DiscussionSPC115 min
Sep 9, 2:05 PM EDTSevere Thunderstorm WatchSPC6 hr
Sep 18, 3:51 PM EDTHigh Surf AdvisoryAKQ48 hr
Sep 19, 12:20 AM EDTCoastal Flood StatementAKQ17 hr
Sep 19, 12:20 AM EDTCoastal Flood AdvisoryAKQ40 hr
Sep 19, 5:19 PM EDTCoastal Flood StatementAKQ24 hr
Sep 20, 5:06 PM EDTCoastal Flood StatementAKQ29 hr
Sep 22, 4:30 PM EDTCoastal Flood WatchAKQ3 days
Sep 22, 4:30 PM EDTCoastal Flood StatementAKQ48 hr
Sep 22, 4:30 PM EDTHigh Surf AdvisoryAKQ5 days
Sep 23, 3:55 AM EDTWind AdvisoryAKQ63 hr
Sep 23, 4:59 PM EDTCoastal Flood WarningAKQ54 hr
Sep 25, 10:55 PM EDTCoastal Flood AdvisoryAKQ7 hr
Sep 26, 12:00 PM EDTCoastal Flood StatementAKQ6 hr
Sep 26, 5:53 PM EDTCoastal Flood StatementAKQ25 hr
Sep 27, 6:28 PM EDTCoastal Flood StatementAKQ26 hr
Oct 18, 12:56 PM EDTCoastal Flood AdvisoryAKQ65 hr
Oct 28, 4:24 AM EDTWind AdvisoryAKQ17 hr
Nov 4, 4:00 AM ESTHigh Surf AdvisoryAKQ25 days
Nov 4, 3:38 PM ESTWind AdvisoryAKQ32 hr
Nov 15, 3:10 AM ESTMesoscale DiscussionSPC95 min
Nov 15, 4:10 AM ESTMesoscale DiscussionSPC65 min
Nov 15, 11:07 AM ESTMesoscale DiscussionSPC53 min
Nov 15, 12:22 PM ESTTornado WatchSPC7 hr
Nov 15, 6:15 PM ESTMesoscale DiscussionSPC2 hr
Dec 10, 3:30 PM ESTFlood WatchAKQ33 hr
Dec 11, 3:02 PM ESTMesoscale DiscussionSPC58 min
Dec 11, 3:17 PM ESTTornado WatchSPC6 hr
Dec 21, 3:27 PM ESTWind AdvisoryAKQ19 hr
Dec 31, 4:43 AM ESTWind AdvisoryAKQ17 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 archive20072009

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.