Alert archive / Nebraska / Thomas County

Weather alerts in Thomas County, Nebraska, 2021

111 weather alerts in 2021, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Thomas County and its neighbors

Each county as a circle sized by its count in 2021. Tap one for its archive.

Alerts
111
Warnings
25
Watches
21
Advisories
25
Busiest month
July22 alerts
Busiest day
July 30, 20216 alerts

Over time

By month

Warning verification

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

Thomas County, 2021

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings10280%0
Flash flood warnings00

Each office's whole area, 2021

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS North Platte, NE: tornado warnings70100%10%
NWS North Platte, NE: severe thunderstorm warnings1828752%16376%20 min
NWS North Platte, NE: flash flood warnings6183%1100%22 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, Central Time. Each opens its own page with the text, the map, the radar and the sounding.

IssuedProductOfficeLasted
Jan 12, 2:12 PM CSTHigh Wind WatchLBF24 hr
Jan 13, 1:59 PM CSTHigh Wind WarningLBF52 hr
Jan 18, 2:00 PM CSTSpecial Weather StatementLBF75 min
Jan 24, 3:41 AM CSTWinter Storm WatchLBF10 hr
Jan 24, 1:16 PM CSTWinter Weather AdvisoryLBF41 hr
Jan 28, 3:21 PM CSTDense Fog AdvisoryLBF24 hr
Jan 29, 10:36 PM CSTDense Fog AdvisoryLBF13 hr
Feb 1, 9:19 PM CSTDense Fog AdvisoryLBF15 hr
Feb 5, 3:25 AM CSTWinter Weather AdvisoryLBF33 hr
Feb 5, 2:38 PM CSTWinter Storm WarningLBF21 hr
Feb 6, 2:59 PM CSTWinter Weather AdvisoryLBF30 hr
Feb 8, 3:20 AM CSTWind Chill AdvisoryLBF7 hr
Feb 8, 3:06 PM CSTWind Chill AdvisoryLBF19 hr
Feb 9, 2:46 PM CSTWind Chill AdvisoryLBF5 days
Feb 11, 3:58 AM CSTWinter Weather AdvisoryLBF50 hr
Feb 13, 3:35 PM CSTWind Chill WarningLBF68 hr
Feb 16, 2:27 AM CSTWind Chill AdvisoryLBF29 hr
Mar 5, 3:28 AM CSTFire Weather WatchLBF10 hr
Mar 5, 1:25 PM CSTRed Flag WarningLBF31 hr
Mar 12, 2:00 PM CSTWinter Weather AdvisoryLBF67 hr
Mar 15, 2:27 PM CDTWinter Weather AdvisoryLBF22 hr
Mar 28, 2:07 AM CDTFire Weather WatchLBF12 hr
Mar 28, 3:15 AM CDTHigh Wind WatchLBF24 hr
Mar 28, 2:19 PM CDTRed Flag WarningLBF55 hr
Mar 29, 3:39 AM CDTHigh Wind WarningLBF18 hr
Apr 4, 1:35 PM CDTFire Weather WatchLBF13 hr
Apr 5, 1:28 PM CDTRed Flag WarningLBF8 hr
Apr 6, 6:49 PM CDTSpecial Weather StatementLBF41 min
Apr 6, 7:30 PM CDTSpecial Weather StatementLBF45 min
Apr 6, 7:43 PM CDTSpecial Weather StatementLBF47 min
Apr 6, 8:23 PM CDTSpecial Weather StatementLBF52 min
Apr 6, 9:13 PM CDTSpecial Weather StatementLBF47 min
Apr 15, 3:48 AM CDTWinter Weather AdvisoryLBF35 hr
Apr 25, 2:39 AM CDTFire Weather WatchLBF25 hr
May 13, 4:12 PM CDTSpecial Weather StatementLBF48 min
May 13, 4:56 PM CDTSpecial Weather StatementLBF49 min
May 13, 6:36 PM CDTSevere Thunderstorm WarningLBF39 min
May 22, 5:16 PM CDTSpecial Weather StatementLBF44 min
May 23, 8:12 PM CDTSevere Thunderstorm WatchSPC5 hr
May 23, 8:54 PM CDTSpecial Weather StatementLBF51 min
May 23, 9:56 PM CDTMesoscale DiscussionSPC2 hr
May 26, 3:56 PM CDTSpecial Weather StatementLBF34 min
May 26, 5:39 PM CDTSevere Thunderstorm WarningLBF36 min
May 26, 6:07 PM CDTSevere Thunderstorm WatchSPC8 hr
May 26, 9:17 PM CDTSevere Thunderstorm WarningLBF43 min
Jun 9, 2:21 PM CDTHeat AdvisoryLBF30 hr
Jun 10, 8:28 PM CDTMesoscale DiscussionSPC92 min
Jun 10, 9:08 PM CDTSevere Thunderstorm WatchSPC6 hr
Jun 13, 7:15 PM CDTMesoscale DiscussionSPC2 hr
Jun 15, 2:40 PM CDTHeat AdvisoryLBF53 hr
Jun 22, 2:40 PM CDTHeat AdvisoryLBF29 hr
Jun 23, 3:51 PM CDTMesoscale DiscussionSPC114 min
Jun 23, 4:40 PM CDTSevere Thunderstorm WatchSPC6 hr
Jun 23, 6:13 PM CDTMesoscale DiscussionSPC92 min
Jul 3, 6:33 PM CDTMesoscale DiscussionSPC87 min
Jul 3, 10:53 PM CDTSpecial Weather StatementLBF52 min
Jul 9, 3:43 AM CDTSpecial Weather StatementLBF47 min
Jul 9, 3:16 PM CDTSevere Thunderstorm WatchSPC9 hr
Jul 9, 6:16 PM CDTMesoscale DiscussionSPC119 min
Jul 9, 8:21 PM CDTMesoscale DiscussionSPC114 min
Jul 9, 9:06 PM CDTSevere Thunderstorm WatchSPC6 hr
Jul 10, 12:45 AM CDTSevere Thunderstorm WarningLBF60 min
Jul 10, 1:37 AM CDTMesoscale DiscussionSPC53 min
Jul 10, 1:45 AM CDTMesoscale DiscussionSPC60 min
Jul 16, 4:55 PM CDTSevere Thunderstorm WatchSPC7 hr
Jul 16, 10:17 PM CDTMesoscale DiscussionSPC88 min
Jul 16, 11:11 PM CDTSpecial Weather StatementLBF64 min
Jul 26, 3:12 AM CDTHeat AdvisoryLBF66 hr
Jul 30, 3:24 PM CDTMesoscale DiscussionSPC2 hr
Jul 30, 4:04 PM CDTTornado WatchSPC6 hr
Jul 30, 5:58 PM CDTSpecial Weather StatementLBF47 min
Jul 30, 6:05 PM CDTSevere Thunderstorm WarningLBF40 min
Jul 30, 6:31 PM CDTMesoscale DiscussionSPC89 min
Jul 30, 6:32 PM CDTSevere Thunderstorm WarningLBF43 min
Jul 30, 7:11 PM CDTSpecial Weather StatementLBF34 min
Jul 31, 12:27 AM CDTSpecial Weather StatementLBF48 min
Aug 5, 5:59 PM CDTSevere Thunderstorm Warning Destructive damage threatLBF46 min
Aug 19, 6:25 PM CDTTornado WatchSPC6 hr
Aug 19, 9:27 PM CDTMesoscale DiscussionSPC93 min
Aug 22, 3:38 PM CDTMesoscale DiscussionSPC97 min
Aug 24, 5:14 PM CDTSpecial Weather StatementLBF46 min
Aug 24, 5:59 PM CDTSevere Thunderstorm WarningLBF31 min
Aug 24, 6:00 PM CDTMesoscale DiscussionSPC2 hr
Aug 26, 8:03 PM CDTSevere Thunderstorm WatchSPC7 hr
Sep 11, 11:06 PM CDTSpecial Weather StatementLBF39 min
Sep 11, 11:43 PM CDTSevere Thunderstorm WarningLBF62 min
Sep 13, 5:44 AM CDTDense Fog AdvisoryLBF4 hr
Sep 16, 7:15 PM CDTMesoscale DiscussionSPC2 hr
Sep 16, 8:16 PM CDTSevere Thunderstorm WatchSPC6 hr
Sep 16, 8:35 PM CDTSevere Thunderstorm WarningLBF55 min
Sep 16, 9:47 PM CDTSpecial Weather StatementLBF43 min
Sep 16, 11:14 PM CDTSpecial Weather StatementLBF46 min
Sep 29, 8:40 PM CDTAreal Flood AdvisoryLBF3 hr
Sep 29, 11:11 PM CDTAreal Flood AdvisoryLBF3 hr
Oct 13, 1:45 AM CDTHigh Wind WarningLBF16 hr
Oct 13, 1:30 PM CDTFreeze WarningLBF21 hr
Oct 26, 9:48 PM CDTSpecial Weather StatementLBF42 min
Nov 10, 2:35 PM CSTHigh Wind WarningLBF39 hr
Nov 15, 3:03 PM CSTRed Flag WarningLBF27 hr
Nov 22, 2:02 AM CSTFire Weather WatchLBF12 hr
Nov 22, 2:19 PM CSTRed Flag WarningLBF28 hr
Dec 4, 8:07 AM CSTDense Fog AdvisoryLBF113 min
Dec 4, 10:21 AM CSTDense Fog AdvisoryLBF99 min
Dec 7, 2:56 PM CSTWinter Storm WatchLBF37 hr
Dec 8, 3:00 PM CSTWinter Weather AdvisoryLBF54 hr
Dec 13, 3:51 AM CSTHigh Wind WatchLBF24 hr
Dec 14, 3:25 AM CSTHigh Wind WarningLBF42 hr
Dec 14, 2:02 PM CSTWinter Weather AdvisoryLBF31 hr
Dec 15, 3:17 PM CSTSnow Squall WarningLBF43 min
Dec 15, 3:53 PM CSTSnow Squall WarningLBF37 min
Dec 15, 4:05 PM CSTMesoscale DiscussionSPC3 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 archive20202022

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.