Alert archive / Virginia / Arlington County

Weather alerts in Arlington County, Virginia, 2022

163 weather alerts in 2022, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Arlington County and its neighbors

Each county as a circle sized by its count in 2022. Tap one for its archive.

Alerts
163
Warnings
36
Watches
35
Advisories
45
Busiest month
July34 alerts
Busiest day
May 22, 20228 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 Arlington County in 2022 had a tornado report inside them.

Arlington County, 2022

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings10100%0
Severe thunderstorm warnings13128%729%28 min
Flash flood warnings7614%0

Each office's whole area, 2022

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Baltimore/Washington: tornado warnings38684%1080%9 min
NWS Baltimore/Washington: severe thunderstorm warnings41330027%1,17778%21 min
NWS Baltimore/Washington: flash flood warnings773456%8488%90 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 2, 4:28 AM ESTWinter Storm WatchLWX8 hr
Jan 2, 4:28 AM ESTWinter Storm WarningLWX36 hr
Jan 2, 4:28 AM ESTWinter Weather AdvisoryLWX33 hr
Jan 3, 5:13 AM ESTMesoscale DiscussionSPC4 hr
Jan 3, 11:06 AM ESTMesoscale DiscussionSPC5 hr
Jan 4, 9:04 AM ESTCoastal Flood AdvisoryLWX39 hr
Jan 5, 2:33 PM ESTWinter Weather AdvisoryLWX39 hr
Jan 7, 2:02 AM ESTMesoscale DiscussionSPC5 hr
Jan 14, 3:33 AM ESTWinter Storm WatchLWX33 hr
Jan 15, 6:54 AM ESTCoastal Flood WatchLWX37 hr
Jan 15, 12:30 PM ESTWinter Weather AdvisoryLWX34 hr
Jan 15, 8:55 PM ESTCoastal Flood WarningLWX41 hr
Jan 16, 8:14 PM ESTCoastal Flood AdvisoryLWX21 hr
Jan 16, 8:33 PM ESTWind AdvisoryLWX22 hr
Jan 19, 1:09 PM ESTWinter Weather AdvisoryLWX22 hr
Jan 27, 2:28 PM ESTWinter Weather AdvisoryLWX45 hr
Feb 12, 10:00 AM ESTWinter Weather AdvisoryLWX27 hr
Feb 14, 7:31 AM ESTSpecial Weather StatementLWX29 min
Feb 14, 8:11 AM ESTSpecial Weather StatementLWX64 min
Feb 17, 3:49 AM ESTWind AdvisoryLWX30 hr
Feb 18, 2:18 PM ESTWind AdvisoryLWX29 hr
Feb 24, 9:13 PM ESTMesoscale DiscussionSPC5 hr
Mar 6, 7:27 PM ESTWind AdvisoryLWX30 hr
Mar 11, 3:57 AM ESTWinter Weather AdvisoryLWX35 hr
Mar 11, 3:26 PM ESTWind AdvisoryLWX34 hr
Mar 17, 11:16 PM EDTDense Fog AdvisoryLWX4 min
Mar 17, 11:20 PM EDTDense Fog AdvisoryLWX11 hr
Mar 23, 11:04 PM EDTFlood WatchLWX3 hr
Mar 25, 4:16 AM EDTDense Fog AdvisoryLWX3 hr
Mar 31, 11:22 AM EDTCoastal Flood AdvisoryLWX11 hr
Mar 31, 1:41 PM EDTWind AdvisoryLWX6 hr
Mar 31, 2:01 PM EDTSevere Thunderstorm WatchSPC8 hr
Mar 31, 7:13 PM EDTMesoscale DiscussionSPC92 min
Mar 31, 8:18 PM EDTSevere Thunderstorm WarningLWX42 min
Mar 31, 8:46 PM EDTTornado WarningLWX10 min
Apr 9, 9:42 PM EDTFrost AdvisoryLWX35 hr
May 4, 1:40 AM EDTAreal Flood WarningLWX11 hr
May 6, 3:13 AM EDTFlood WatchLWX33 hr
May 6, 11:48 PM EDTAreal Flood WarningLWX16 hr
May 7, 3:24 PM EDTCoastal Flood WatchLWX4 days
May 8, 6:12 AM EDTCoastal Flood AdvisoryLWX22 hr
May 8, 9:07 PM EDTCoastal Flood AdvisoryLWX4 days
May 14, 10:45 PM EDTDense Fog AdvisoryLWX10 hr
May 15, 3:05 PM EDTMesoscale DiscussionSPC85 min
May 16, 12:01 PM EDTMesoscale DiscussionSPC119 min
May 16, 2:23 PM EDTMesoscale DiscussionSPC2 hr
May 16, 3:40 PM EDTSevere Thunderstorm WatchSPC5 hr
May 16, 4:07 PM EDTSevere Thunderstorm Warning Considerable damage threatLWX38 min
May 22, 12:20 PM EDTMesoscale DiscussionSPC2 hr
May 22, 1:53 PM EDTSevere Thunderstorm WatchSPC7 hr
May 22, 4:15 PM EDTMesoscale DiscussionSPC90 min
May 22, 5:09 PM EDTSevere Thunderstorm WarningLWX51 min
May 22, 5:56 PM EDTSevere Thunderstorm WarningLWX49 min
May 22, 6:32 PM EDTMesoscale DiscussionSPC118 min
May 22, 7:04 PM EDTSevere Thunderstorm WarningLWX56 min
May 22, 7:18 PM EDTAreal Flood WarningLWX5 hr
May 27, 4:07 AM EDTFlood WatchLWX19 hr
May 27, 6:24 AM EDTTornado WatchSPC8 hr
May 27, 8:13 AM EDTMesoscale DiscussionSPC2 hr
May 27, 10:59 AM EDTMesoscale DiscussionSPC91 min
May 27, 11:47 AM EDTSevere Thunderstorm WarningLWX43 min
May 27, 12:29 PM EDTSevere Thunderstorm WarningLWX46 min
May 27, 5:45 PM EDTSevere Thunderstorm WatchSPC4 hr
May 27, 7:22 PM EDTMesoscale DiscussionSPC83 min
Jun 2, 1:04 PM EDTMesoscale DiscussionSPC116 min
Jun 2, 1:53 PM EDTSevere Thunderstorm WatchSPC7 hr
Jun 2, 3:07 PM EDTFlood WatchLWX4 hr
Jun 2, 4:18 PM EDTSevere Thunderstorm WarningLWX42 min
Jun 2, 4:41 PM EDTAreal Flood WarningLWX5 min
Jun 2, 4:43 PM EDTMesoscale DiscussionSPC92 min
Jun 2, 4:46 PM EDTFlash Flood Warning Considerable damage threatLWX100 min
Jun 2, 6:26 PM EDTAreal Flood WarningLWX2 hr
Jun 8, 12:05 PM EDTFlood WatchLWX15 hr
Jun 8, 2:58 PM EDTMesoscale DiscussionSPC2 hr
Jun 8, 11:17 PM EDTMesoscale DiscussionSPC118 min
Jun 9, 1:39 AM EDTMesoscale DiscussionSPC3 hr
Jun 16, 3:29 PM EDTSevere Thunderstorm WatchSPC5 hr
Jun 16, 4:53 PM EDTMesoscale DiscussionSPC97 min
Jun 22, 3:05 AM EDTFlood WatchLWX20 hr
Jun 22, 12:57 PM EDTMesoscale DiscussionSPC93 min
Jun 22, 1:34 PM EDTSevere Thunderstorm WatchSPC7 hr
Jun 22, 3:56 PM EDTMesoscale DiscussionSPC94 min
Jun 22, 6:16 PM EDTMesoscale DiscussionSPC119 min
Jun 22, 8:48 PM EDTAreal Flood WarningLWX61 min
Jul 1, 11:59 AM EDTMesoscale DiscussionSPC3 hr
Jul 1, 3:12 PM EDTSevere Thunderstorm WatchSPC4 hr
Jul 1, 3:38 PM EDTMesoscale DiscussionSPC2 hr
Jul 2, 2:48 AM EDTFlood WatchLWX19 hr
Jul 2, 1:16 PM EDTMesoscale DiscussionSPC119 min
Jul 2, 3:02 PM EDTSevere Thunderstorm WatchSPC6 hr
Jul 2, 4:47 PM EDTMesoscale DiscussionSPC118 min
Jul 2, 9:01 PM EDTFlash Flood WarningLWX6 hr
Jul 3, 2:46 AM EDTAreal Flood WarningLWX6 hr
Jul 3, 2:48 AM EDTAreal Flood WarningLWX6 hr
Jul 6, 5:20 AM EDTFlood WatchLWX24 hr
Jul 8, 12:53 PM EDTFlood WatchLWX23 hr
Jul 9, 1:42 AM EDTFlash Flood Warning Considerable damage threatLWX2 hr
Jul 9, 3:58 AM EDTAreal Flood WarningLWX10 hr
Jul 12, 6:34 AM EDTFlood WatchLWX18 hr
Jul 12, 12:48 PM EDTMesoscale DiscussionSPC2 hr
Jul 12, 2:12 PM EDTSevere Thunderstorm WatchSPC8 hr
Jul 12, 4:02 PM EDTMesoscale DiscussionSPC88 min
Jul 12, 5:38 PM EDTSevere Thunderstorm WarningLWX37 min
Jul 16, 1:36 PM EDTMesoscale DiscussionSPC3 hr
Jul 16, 6:49 PM EDTAreal Flood WarningLWX4 hr
Jul 16, 7:38 PM EDTFlash Flood WarningLWX3 hr
Jul 17, 2:21 PM EDTMesoscale DiscussionSPC114 min
Jul 18, 9:31 AM EDTFlood WatchLWX12 hr
Jul 18, 12:18 PM EDTMesoscale DiscussionSPC117 min
Jul 18, 1:47 PM EDTSevere Thunderstorm WatchSPC6 hr
Jul 18, 4:32 PM EDTMesoscale DiscussionSPC88 min
Jul 20, 12:51 PM EDTHeat AdvisoryLWX29 hr
Jul 23, 1:13 PM EDTHeat AdvisoryLWX31 hr
Jul 23, 7:04 PM EDTMesoscale DiscussionSPC116 min
Jul 25, 1:02 PM EDTMesoscale DiscussionSPC118 min
Jul 25, 1:46 PM EDTSevere Thunderstorm WatchSPC8 hr
Jul 25, 3:42 PM EDTSevere Thunderstorm WarningLWX48 min
Jul 25, 4:01 PM EDTMesoscale DiscussionSPC119 min
Aug 3, 1:02 PM EDTHeat AdvisoryLWX31 hr
Aug 4, 1:14 PM EDTMesoscale DiscussionSPC2 hr
Aug 4, 6:28 PM EDTSevere Thunderstorm WarningLWX47 min
Aug 4, 10:16 PM EDTFlash Flood WarningLWX2 hr
Aug 5, 10:20 AM EDTFlood WatchLWX11 hr
Aug 5, 2:37 PM EDTMesoscale DiscussionSPC113 min
Aug 10, 3:07 AM EDTFlood WatchLWX20 hr
Aug 10, 1:01 PM EDTMesoscale DiscussionSPC3 hr
Aug 10, 4:25 PM EDTSevere Thunderstorm WarningLWX14 min
Aug 10, 4:27 PM EDTFlash Flood WarningLWX3 hr
Aug 10, 4:28 PM EDTSevere Thunderstorm WarningLWX30 min
Aug 10, 4:57 PM EDTFlash Flood WarningLWX2 hr
Aug 10, 7:17 PM EDTAreal Flood WarningLWX8 hr
Aug 22, 4:10 PM EDTMesoscale DiscussionSPC3 hr
Aug 30, 1:55 PM EDTMesoscale DiscussionSPC2 hr
Sep 5, 9:06 PM EDTFlood WatchLWX12 hr
Sep 7, 10:41 PM EDTCoastal Flood AdvisoryLWX19 hr
Sep 8, 8:34 PM EDTCoastal Flood AdvisoryLWX4 days
Sep 11, 8:30 AM EDTCoastal Flood AdvisoryLWX2 hr
Sep 11, 9:04 PM EDTCoastal Flood AdvisoryLWX14 hr
Sep 12, 2:52 AM EDTFlood WatchLWX17 hr
Sep 12, 2:22 PM EDTMesoscale DiscussionSPC2 hr
Sep 12, 5:41 PM EDTAreal Flood WarningLWX3 hr
Sep 12, 5:46 PM EDTMesoscale DiscussionSPC119 min
Sep 25, 10:23 AM EDTMesoscale DiscussionSPC2 hr
Sep 25, 11:37 AM EDTSevere Thunderstorm WatchSPC6 hr
Sep 25, 2:35 PM EDTMesoscale DiscussionSPC115 min
Sep 30, 4:03 AM EDTCoastal Flood AdvisoryLWX47 hr
Oct 18, 12:36 PM EDTFrost AdvisoryLWX20 hr
Oct 19, 1:32 PM EDTFrost AdvisoryLWX19 hr
Oct 20, 1:59 PM EDTFrost AdvisoryLWX19 hr
Oct 29, 1:00 PM EDTFrost AdvisoryLWX21 hr
Nov 1, 4:03 AM EDTDense Fog AdvisoryLWX7 hr
Nov 4, 7:51 AM EDTDense Fog AdvisoryLWX2 hr
Nov 11, 4:15 AM ESTCoastal Flood AdvisoryLWX23 hr
Nov 12, 2:43 PM ESTFreeze WatchLWX13 hr
Nov 13, 3:58 AM ESTFreeze WarningLWX29 hr
Dec 7, 10:40 PM ESTDense Fog AdvisoryLWX8 hr
Dec 14, 2:30 AM ESTWinter Weather AdvisoryLWX37 hr
Dec 15, 2:00 AM ESTCoastal Flood AdvisoryLWX33 hr
Dec 21, 3:22 PM ESTFlood WatchLWX34 hr
Dec 22, 12:37 PM ESTWind AdvisoryLWX29 hr
Dec 22, 2:05 PM ESTCoastal Flood AdvisoryLWX27 hr
Dec 22, 2:55 PM ESTWind Chill AdvisoryLWX67 hr
Dec 31, 5:56 AM ESTDense Fog AdvisoryLWX16 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 archive20212023

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.