Alert archive / Vermont / Addison County

Weather alerts in Addison County, Vermont, 2010

121 weather alerts in 2010, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Addison County and its neighbors

Each county as a circle sized by its count in 2010. Tap one for its archive.

Alerts
121
Warnings
36
Watches
16
Advisories
39
Busiest month
July23 alerts
Busiest day
July 21, 201010 alerts

Over time

By month

Warning verification

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

Addison County, 2010

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings171324%1292%41 min
Flash flood warnings40100%0

Each office's whole area, 2010

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Burlington, VT: tornado warnings30100%10%
NWS Burlington, VT: severe thunderstorm warnings462839%13088%28 min
NWS Burlington, VT: flash flood warnings80100%0

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, 2:52 AM ESTWinter Storm WatchBTV26 hr
Jan 2, 4:33 AM ESTWinter Storm WarningBTV41 hr
Jan 8, 11:56 PM ESTWinter Weather AdvisoryBTV3 hr
Jan 23, 2:52 PM ESTFlood WatchBTV60 hr
Jan 24, 3:01 AM ESTWind AdvisoryBTV37 hr
Jan 25, 10:47 AM ESTHigh Wind WarningBTV5 hr
Jan 25, 3:44 PM ESTAreal Flood WarningBTV6 hr
Jan 28, 12:37 PM ESTWind AdvisoryBTV9 hr
Jan 28, 3:00 PM ESTWind Chill WarningBTV40 hr
Jan 28, 3:00 PM ESTWind Chill AdvisoryBTV40 hr
Feb 23, 3:57 AM ESTWinter Storm WatchBTV7 hr
Feb 23, 11:12 AM ESTWinter Storm WarningBTV64 hr
Feb 24, 11:44 AM ESTMesoscale DiscussionSPC4 hr
Feb 25, 4:00 AM ESTHigh Wind WatchBTV11 hr
Feb 25, 4:00 AM ESTWinter Weather AdvisoryBTV24 hr
Feb 25, 2:34 PM ESTHigh Wind WarningBTV19 hr
Mar 13, 3:19 AM ESTWind AdvisoryBTV24 hr
Mar 22, 3:08 PM EDTFlood WatchBTV37 hr
Mar 23, 8:52 AM EDTAreal Flood AdvisoryBTV6 hr
Apr 27, 4:28 AM EDTWinter Storm WarningBTV33 hr
Apr 27, 4:28 AM EDTWinter Weather AdvisoryBTV30 hr
May 4, 10:56 AM EDTSpecial Weather StatementBTV49 min
May 4, 11:41 AM EDTSpecial Weather StatementBTV49 min
May 4, 1:24 PM EDTSevere Thunderstorm WatchSPC6 hr
May 4, 6:00 PM EDTSevere Thunderstorm WarningBTV45 min
May 4, 6:21 PM EDTSpecial Weather StatementBTV54 min
May 9, 2:56 PM EDTFrost AdvisoryBTV16 hr
May 10, 3:05 PM EDTFreeze WarningBTV16 hr
May 12, 4:06 AM EDTFrost AdvisoryBTV27 hr
May 12, 4:06 AM EDTFreeze WarningBTV27 hr
May 16, 3:37 AM EDTFrost AdvisoryBTV28 hr
May 26, 3:17 PM EDTMesoscale DiscussionSPC58 min
May 26, 7:25 PM EDTMesoscale DiscussionSPC65 min
May 26, 7:45 PM EDTSevere Thunderstorm WatchSPC6 hr
May 26, 8:10 PM EDTSevere Thunderstorm WarningBTV65 min
May 26, 8:44 PM EDTSevere Thunderstorm WarningBTV61 min
May 26, 9:09 PM EDTSevere Thunderstorm WarningBTV66 min
May 26, 9:37 PM EDTSevere Thunderstorm WarningBTV53 min
May 26, 9:47 PM EDTMesoscale DiscussionSPC88 min
May 31, 11:56 PM EDTSpecial Weather StatementBTV49 min
Jun 1, 1:06 AM EDTSpecial Weather StatementBTV54 min
Jun 5, 12:17 PM EDTMesoscale DiscussionSPC58 min
Jun 5, 1:00 PM EDTTornado WatchSPC7 hr
Jun 5, 2:46 PM EDTSpecial Weather StatementBTV59 min
Jun 8, 3:49 PM EDTFrost AdvisoryBTV15 hr
Jun 10, 1:53 PM EDTSpecial Weather StatementBTV52 min
Jun 20, 12:34 PM EDTSpecial Weather StatementBTV41 min
Jun 24, 3:25 PM EDTAreal Flood AdvisoryBTV3 hr
Jun 24, 3:41 PM EDTSpecial Weather StatementBTV64 min
Jun 28, 4:31 AM EDTAreal Flood AdvisoryBTV2 hr
Jul 6, 3:04 AM EDTHeat AdvisoryBTV65 hr
Jul 8, 1:30 PM EDTAreal Flood AdvisoryBTV3 hr
Jul 9, 3:16 AM EDTFlash Flood WatchBTV32 hr
Jul 9, 12:54 PM EDTMesoscale DiscussionSPC2 hr
Jul 10, 7:28 AM EDTAreal Flood AdvisoryBTV3 hr
Jul 13, 11:48 PM EDTAreal Flood AdvisoryBTV3 hr
Jul 14, 12:08 AM EDTFlash Flood WarningBTV8 days
Jul 17, 6:43 PM EDTMesoscale DiscussionSPC92 min
Jul 19, 4:47 PM EDTSevere Thunderstorm WarningBTV58 min
Jul 19, 5:16 PM EDTSevere Thunderstorm WarningBTV44 min
Jul 19, 5:28 PM EDTAreal Flood AdvisoryBTV3 hr
Jul 20, 3:16 PM EDTSpecial Weather StatementBTV59 min
Jul 21, 10:43 AM EDTMesoscale DiscussionSPC2 hr
Jul 21, 11:27 AM EDTSevere Thunderstorm WatchSPC9 hr
Jul 21, 1:59 PM EDTMesoscale DiscussionSPC61 min
Jul 21, 2:31 PM EDTSevere Thunderstorm WarningBTV59 min
Jul 21, 3:27 PM EDTSevere Thunderstorm WarningBTV63 min
Jul 21, 3:41 PM EDTMesoscale DiscussionSPC64 min
Jul 21, 4:18 PM EDTSevere Thunderstorm WarningBTV57 min
Jul 21, 4:42 PM EDTAreal Flood AdvisoryBTV3 hr
Jul 21, 5:00 PM EDTSevere Thunderstorm WarningBTV60 min
Jul 21, 6:42 PM EDTSevere Thunderstorm WarningBTV63 min
Jul 28, 10:25 PM EDTSevere Thunderstorm WarningBTV35 min
Aug 2, 4:00 PM EDTSevere Thunderstorm WarningBTV46 min
Aug 3, 3:38 PM EDTMesoscale DiscussionSPC97 min
Aug 5, 7:38 PM EDTMesoscale DiscussionSPC2 hr
Aug 9, 2:30 PM EDTSevere Thunderstorm WarningBTV60 min
Aug 9, 5:23 PM EDTSevere Thunderstorm WarningBTV40 min
Aug 9, 5:37 PM EDTMesoscale DiscussionSPC53 min
Aug 9, 7:11 PM EDTAreal Flood AdvisoryBTV3 hr
Aug 9, 7:55 PM EDTAreal Flood AdvisoryBTV3 hr
Aug 9, 8:26 PM EDTFlash Flood WarningBTV3 hr
Aug 10, 3:35 PM EDTMesoscale DiscussionSPC85 min
Aug 16, 8:40 AM EDTMesoscale DiscussionSPC2 hr
Aug 16, 11:14 AM EDTMesoscale DiscussionSPC2 hr
Aug 16, 12:05 PM EDTSevere Thunderstorm WatchSPC9 hr
Aug 16, 2:17 PM EDTMesoscale DiscussionSPC88 min
Aug 22, 3:39 AM EDTFlood WatchBTV24 hr
Sep 17, 4:23 AM EDTFrost AdvisoryBTV26 hr
Sep 29, 4:12 AM EDTFlood WatchBTV70 hr
Sep 30, 9:13 PM EDTSevere Thunderstorm WarningBTV62 min
Sep 30, 10:16 PM EDTSpecial Weather StatementBTV74 min
Sep 30, 11:25 PM EDTAreal Flood AdvisoryBTV6 hr
Oct 1, 12:00 AM EDTFlash Flood WarningBTV6 hr
Oct 1, 5:45 AM EDTAreal Flood WarningBTV17 hr
Oct 2, 8:43 PM EDTFrost AdvisoryBTV10 hr
Oct 3, 3:33 PM EDTFrost AdvisoryBTV15 hr
Oct 9, 3:00 AM EDTFreeze WarningBTV29 hr
Oct 11, 3:01 PM EDTFrost AdvisoryBTV13 hr
Oct 12, 3:23 PM EDTFrost AdvisoryBTV16 hr
Oct 14, 3:24 PM EDTFlood WatchBTV48 hr
Oct 15, 3:38 AM EDTWind AdvisoryBTV19 hr
Oct 15, 10:19 AM EDTWinter Weather AdvisoryBTV17 hr
Oct 15, 7:25 PM EDTAreal Flood WarningBTV10 hr
Nov 7, 2:10 PM ESTWinter Weather AdvisoryBTV32 hr
Nov 16, 3:16 AM ESTWind AdvisoryBTV28 hr
Nov 17, 11:09 AM ESTWind AdvisoryBTV16 hr
Nov 25, 3:11 AM ESTWinter Weather AdvisoryBTV32 hr
Nov 26, 12:47 AM ESTMesoscale DiscussionSPC4 hr
Nov 30, 3:03 AM ESTHigh Wind WatchBTV13 hr
Nov 30, 3:48 PM ESTHigh Wind WarningBTV26 hr
Dec 6, 10:36 AM ESTWinter Storm WarningBTV28 hr
Dec 6, 10:36 AM ESTWinter Weather AdvisoryBTV24 hr
Dec 10, 2:05 PM ESTHigh Wind WatchBTV25 hr
Dec 11, 2:51 PM ESTHigh Wind WarningBTV29 hr
Dec 11, 2:51 PM ESTWind AdvisoryBTV29 hr
Dec 12, 6:28 AM ESTMesoscale DiscussionSPC4 hr
Dec 13, 2:59 AM ESTWinter Weather AdvisoryBTV31 hr
Dec 19, 7:16 PM ESTFreezing Fog AdvisoryBTV12 hr
Dec 22, 5:41 PM ESTWinter Weather AdvisoryBTV16 hr
Dec 26, 3:06 AM ESTWinter Storm WarningBTV33 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.