Alert archive / Vermont / Washington County

Weather alerts in Washington County, Vermont, 2018

109 weather alerts in 2018, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Washington County and its neighbors

Each county as a circle sized by its count in 2018. Tap one for its archive.

Alerts
109
Warnings
38
Watches
11
Advisories
25
Busiest month
November19 alerts
Busiest day
May 4, 20188 alerts

Over time

By month

Warning verification

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

Washington County, 2018

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings121017%367%25 min
Flash flood warnings220%0

Each office's whole area, 2018

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Burlington, VT: severe thunderstorm warnings403513%8183%30 min
NWS Burlington, VT: flash flood warnings5340%580%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 3, 3:19 AM ESTWind Chill WatchBTV24 hr
Jan 3, 3:19 AM ESTWinter Weather AdvisoryBTV56 hr
Jan 4, 3:39 AM ESTWind Chill WarningBTV3 days
Jan 4, 11:52 AM ESTWind AdvisoryBTV10 hr
Jan 11, 4:08 AM ESTWinter Storm WatchBTV11 hr
Jan 11, 2:54 PM ESTWinter Storm WarningBTV46 hr
Jan 12, 2:14 AM ESTFlood WatchBTV25 hr
Jan 12, 12:47 PM ESTAreal Flood WarningBTV9 hr
Jan 12, 7:04 PM ESTMesoscale DiscussionSPC6 hr
Jan 12, 9:59 PM ESTAreal Flood WarningBTV9 hr
Jan 13, 12:56 AM ESTMesoscale DiscussionSPC6 hr
Jan 13, 6:44 AM ESTAreal Flood WarningBTV12 hr
Jan 21, 3:07 PM ESTWinter Weather AdvisoryBTV45 hr
Jan 22, 3:25 PM ESTMesoscale DiscussionSPC6 hr
Jan 23, 7:02 PM ESTSpecial Weather StatementBTV58 min
Feb 4, 3:12 AM ESTWinter Weather AdvisoryBTV22 hr
Feb 5, 2:15 PM ESTWinter Storm WatchBTV13 hr
Feb 6, 2:54 AM ESTWinter Storm WarningBTV42 hr
Feb 7, 11:25 AM ESTMesoscale DiscussionSPC6 hr
Feb 9, 4:34 PM ESTWinter Weather AdvisoryBTV25 hr
Feb 18, 2:41 AM ESTFlood WatchBTV4 days
Feb 23, 3:29 AM ESTWinter Weather AdvisoryBTV17 hr
Feb 24, 4:04 AM ESTWinter Weather AdvisoryBTV33 hr
Mar 5, 3:40 AM ESTWinter Storm WatchBTV35 hr
Mar 6, 3:24 AM ESTWinter Storm WarningBTV61 hr
Mar 12, 3:18 AM EDTWinter Weather AdvisoryBTV3 days
Mar 13, 6:23 PM EDTWinter Storm WarningBTV33 hr
Apr 3, 3:09 PM EDTWind AdvisoryBTV36 hr
Apr 7, 3:32 AM EDTSpecial Weather StatementBTV43 min
Apr 13, 4:13 AM EDTWinter Weather AdvisoryBTV3 days
Apr 13, 3:20 PM EDTFlood WatchBTV36 hr
May 4, 3:11 AM EDTWind AdvisoryBTV24 hr
May 4, 2:18 PM EDTMesoscale DiscussionSPC87 min
May 4, 3:16 PM EDTTornado WatchSPC6 hr
May 4, 6:24 PM EDTSevere Thunderstorm WarningBTV66 min
May 4, 6:48 PM EDTMesoscale DiscussionSPC117 min
May 4, 7:12 PM EDTSevere Thunderstorm WarningBTV63 min
May 4, 7:29 PM EDTSevere Thunderstorm WarningBTV61 min
May 4, 7:42 PM EDTFlash Flood WarningBTV3 hr
May 4, 8:05 PM EDTSevere Thunderstorm WarningBTV55 min
May 4, 8:25 PM EDTSevere Thunderstorm WarningBTV65 min
May 4, 8:29 PM EDTFlash Flood WarningBTV3 hr
May 4, 8:53 PM EDTMesoscale DiscussionSPC97 min
May 4, 10:44 PM EDTAreal Flood WarningBTV6 hr
May 4, 11:28 PM EDTAreal Flood WarningBTV6 hr
May 11, 4:00 PM EDTFrost AdvisoryBTV16 hr
Jun 18, 12:19 PM EDTMesoscale DiscussionSPC116 min
Jun 18, 1:21 PM EDTSpecial Weather StatementBTV39 min
Jun 18, 2:23 PM EDTSevere Thunderstorm WarningBTV52 min
Jun 18, 2:49 PM EDTSevere Thunderstorm WatchSPC5 hr
Jun 18, 3:10 PM EDTSevere Thunderstorm WarningBTV65 min
Jun 18, 3:37 PM EDTSevere Thunderstorm WarningBTV53 min
Jun 18, 4:31 PM EDTSevere Thunderstorm WarningBTV59 min
Jun 18, 9:19 PM EDTSpecial Weather StatementBTV56 min
Jun 29, 3:35 AM EDTHeat AdvisoryBTV5 days
Jun 30, 5:07 PM EDTMesoscale DiscussionSPC83 min
Jun 30, 10:10 PM EDTMesoscale DiscussionSPC2 hr
Jul 1, 1:42 AM EDTSevere Thunderstorm WarningBTV18 min
Jul 4, 3:33 PM EDTHeat AdvisoryBTV28 hr
Jul 10, 12:57 PM EDTMesoscale DiscussionSPC3 hr
Jul 27, 3:40 PM EDTSpecial Weather StatementBTV35 min
Jul 28, 12:02 AM EDTSevere Thunderstorm WarningBTV58 min
Jul 28, 1:11 AM EDTSpecial Weather StatementBTV64 min
Jul 28, 3:03 PM EDTMesoscale DiscussionSPC57 min
Jul 28, 5:34 PM EDTSpecial Weather StatementBTV56 min
Aug 4, 2:27 AM EDTSpecial Weather StatementBTV93 min
Aug 4, 4:20 AM EDTSpecial Weather StatementBTV85 min
Aug 15, 3:04 PM EDTMesoscale DiscussionSPC2 hr
Aug 29, 1:19 PM EDTMesoscale DiscussionSPC116 min
Aug 29, 3:45 PM EDTSevere Thunderstorm WatchSPC5 hr
Aug 29, 5:23 PM EDTSpecial Weather StatementBTV52 min
Aug 29, 6:16 PM EDTMesoscale DiscussionSPC89 min
Aug 29, 6:16 PM EDTMesoscale DiscussionSPC89 min
Sep 3, 1:34 PM EDTMesoscale DiscussionSPC116 min
Sep 3, 6:58 PM EDTSevere Thunderstorm WarningBTV62 min
Sep 6, 8:41 AM EDTSpecial Weather StatementBTV34 min
Sep 22, 2:55 AM EDTFrost AdvisoryBTV30 hr
Sep 26, 2:43 PM EDTMesoscale DiscussionSPC2 hr
Oct 5, 3:29 AM EDTFreeze WarningBTV24 hr
Oct 13, 3:27 AM EDTFreeze WarningBTV28 hr
Oct 26, 3:10 PM EDTWinter Weather AdvisoryBTV40 hr
Nov 2, 3:26 PM EDTWind AdvisoryBTV29 hr
Nov 9, 3:16 AM ESTWinter Weather AdvisoryBTV24 hr
Nov 9, 9:46 PM ESTMesoscale DiscussionSPC6 hr
Nov 12, 3:07 AM ESTWinter Weather AdvisoryBTV34 hr
Nov 14, 3:15 PM ESTWinter Weather AdvisoryBTV45 hr
Nov 15, 3:28 AM ESTWinter Storm WarningBTV33 hr
Nov 15, 10:06 PM ESTMesoscale DiscussionSPC6 hr
Nov 16, 3:56 AM ESTMesoscale DiscussionSPC6 hr
Nov 21, 9:09 AM ESTMesoscale DiscussionSPC4 hr
Nov 21, 11:32 AM ESTSnow Squall WarningBTV43 min
Nov 21, 12:16 PM ESTSnow Squall WarningBTV44 min
Nov 21, 12:52 PM ESTSnow Squall WarningBTV53 min
Nov 21, 1:28 PM ESTSnow Squall WarningBTV62 min
Nov 21, 3:00 PM ESTSnow Squall WarningBTV60 min
Nov 23, 2:49 PM ESTWinter Weather AdvisoryBTV45 hr
Nov 26, 3:11 AM ESTWinter Storm WarningBTV34 hr
Nov 26, 3:11 AM ESTWinter Weather AdvisoryBTV64 hr
Nov 26, 8:34 PM ESTMesoscale DiscussionSPC6 hr
Nov 30, 2:08 PM ESTWinter Weather AdvisoryBTV46 hr
Dec 19, 2:39 PM ESTWinter Weather AdvisoryBTV38 hr
Dec 19, 2:42 PM ESTFlood WatchBTV69 hr
Dec 21, 3:01 PM ESTAreal Flood WarningBTV10 hr
Dec 21, 10:22 PM ESTRiver Flood WarningBTV5 hr
Dec 22, 9:31 AM ESTAreal Flood WarningBTV4 hr
Dec 22, 10:15 AM ESTRiver Flood WarningBTV5 hr
Dec 22, 1:23 PM ESTAreal Flood WarningBTV3 hr
Dec 26, 3:11 PM ESTWinter Weather AdvisoryBTV48 hr
Dec 28, 2:59 AM ESTMesoscale DiscussionSPC6 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 archive20172019

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.