Alert archive / Vermont / Orleans County

Weather alerts in Orleans County, Vermont, 2018

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

Orleans County and its neighbors

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

Alerts
101
Warnings
32
Watches
11
Advisories
26
Busiest month
November17 alerts
Busiest day
May 4, 20186 alerts

Over time

By month

Warning verification

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

Orleans County, 2018

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings770%367%23 min
Flash flood warnings110%1100%45 min

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, 3:39 AM ESTWinter Storm WarningBTV24 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, 1:10 PM ESTAreal Flood WarningBTV9 hr
Jan 12, 7:04 PM ESTMesoscale DiscussionSPC6 hr
Jan 12, 9:59 PM ESTAreal Flood WarningBTV9 hr
Jan 12, 10:29 PM ESTRiver Flood WarningBTV10 hr
Jan 13, 12:56 AM ESTMesoscale DiscussionSPC6 hr
Jan 13, 12:55 PM ESTRiver Flood WarningBTV40 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 2, 2:33 AM ESTWind Chill AdvisoryBTV28 hr
Feb 4, 3:12 AM ESTWinter Weather AdvisoryBTV22 hr
Feb 4, 5:48 PM ESTWinter Storm WarningBTV8 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 10, 6:00 PM ESTWinter Weather AdvisoryBTV9 hr
Feb 18, 2:41 AM ESTFlood WatchBTV4 days
Feb 21, 2:25 PM ESTAreal Flood WarningBTV21 hr
Feb 22, 6:22 AM ESTRiver Flood WarningBTV33 hr
Feb 23, 3:29 AM ESTWinter Weather AdvisoryBTV17 hr
Feb 23, 12:49 PM ESTRiver Flood WarningBTV24 hr
Mar 5, 3:40 AM ESTWinter Storm WatchBTV35 hr
Mar 6, 3:24 AM ESTWinter Storm WarningBTV61 hr
Mar 9, 3:29 PM ESTWinter Weather AdvisoryBTV39 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 13, 4:13 AM EDTWinter Weather AdvisoryBTV3 days
Apr 13, 3:20 PM EDTFlood WatchBTV36 hr
Apr 27, 10:43 AM EDTRiver Flood WarningBTV11 hr
Apr 30, 11:19 AM EDTRiver Flood WarningBTV44 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, 6:48 PM EDTMesoscale DiscussionSPC117 min
May 4, 6:54 PM EDTSevere Thunderstorm WarningBTV45 min
May 4, 7:12 PM EDTSevere Thunderstorm WarningBTV63 min
May 4, 8:05 PM EDTSevere Thunderstorm WarningBTV55 min
May 4, 8:29 PM EDTFlash Flood WarningBTV3 hr
May 4, 8:53 PM EDTMesoscale DiscussionSPC97 min
May 4, 11:28 PM EDTAreal Flood WarningBTV6 hr
May 5, 4:14 PM EDTRiver Flood WarningBTV21 hr
Jun 18, 2:49 PM EDTSevere Thunderstorm WatchSPC5 hr
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, 12:45 AM EDTSpecial Weather StatementBTV60 min
Jul 1, 3:54 AM EDTSpecial Weather StatementBTV66 min
Jul 4, 3:33 PM EDTHeat AdvisoryBTV28 hr
Jul 5, 8:32 PM EDTSpecial Weather StatementBTV28 min
Jul 10, 12:57 PM EDTMesoscale DiscussionSPC3 hr
Jul 27, 5:54 PM EDTSpecial Weather StatementBTV66 min
Jul 27, 10:15 PM EDTSpecial Weather StatementBTV60 min
Jul 28, 3:03 PM EDTMesoscale DiscussionSPC57 min
Aug 6, 4:10 PM EDTSpecial Weather StatementBTV50 min
Aug 6, 7:30 PM EDTSpecial Weather StatementBTV45 min
Aug 6, 8:16 PM EDTSevere Thunderstorm WarningBTV29 min
Aug 29, 1:19 PM EDTMesoscale DiscussionSPC116 min
Aug 29, 3:45 PM EDTSevere Thunderstorm WatchSPC5 hr
Aug 29, 5:14 PM EDTSevere Thunderstorm WarningBTV61 min
Sep 3, 1:34 PM EDTMesoscale DiscussionSPC116 min
Sep 3, 3:30 PM EDTSpecial Weather StatementBTV60 min
Sep 3, 5:08 PM EDTSpecial Weather StatementBTV67 min
Sep 3, 6:12 PM EDTSpecial Weather StatementBTV48 min
Sep 3, 6:32 PM EDTSevere Thunderstorm WarningBTV43 min
Sep 3, 6:58 PM EDTSevere Thunderstorm WarningBTV62 min
Sep 7, 2:58 PM EDTFrost AdvisoryBTV40 hr
Sep 22, 2:55 AM EDTFrost AdvisoryBTV30 hr
Sep 26, 2:43 PM EDTMesoscale DiscussionSPC2 hr
Sep 26, 4:40 PM EDTSpecial Weather StatementBTV65 min
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 12, 2:30 PM ESTWinter Storm WarningBTV23 hr
Nov 13, 8:06 AM ESTMesoscale DiscussionSPC4 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, 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 23, 2:49 PM ESTWinter Weather AdvisoryBTV45 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, 2:42 PM ESTFlood WatchBTV69 hr
Dec 20, 3:07 AM ESTWind AdvisoryBTV33 hr
Dec 22, 9:56 AM ESTRiver Flood WarningBTV51 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.