Alert archive / Minnesota / Pennington County

Weather alerts in Pennington County, Minnesota, 2023

80 weather alerts in 2023, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Pennington County and its neighbors

Each county as a circle sized by its count in 2023. Tap one for its archive.

Alerts
80
Warnings
18
Watches
13
Advisories
34
Busiest month
April10 alerts
Busiest day
August 1, 20236 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 Pennington County in 2023 had a tornado report inside them.

Pennington County, 2023

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings10100%0
Severe thunderstorm warnings7529%10%
Flash flood warnings00

Each office's whole area, 2023

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Grand Forks, ND: tornado warnings17759%1953%30 min
NWS Grand Forks, ND: severe thunderstorm warnings1467449%15275%25 min
NWS Grand Forks, ND: flash flood warnings440%863%37 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 3, 3:20 AM CSTDense Fog AdvisoryFGF12 hr
Jan 16, 8:14 AM CSTWinter Weather AdvisoryFGF28 hr
Jan 26, 3:59 AM CSTWinter Weather AdvisoryFGF32 hr
Jan 27, 12:56 PM CSTWind Chill AdvisoryFGF53 hr
Jan 28, 1:50 PM CSTWind Chill WarningFGF46 hr
Jan 30, 1:19 AM CSTWind Chill AdvisoryFGF35 hr
Jan 31, 1:32 PM CSTWind Chill AdvisoryFGF16 hr
Feb 1, 1:53 PM CSTWind Chill AdvisoryFGF46 hr
Feb 12, 4:44 AM CSTDense Fog AdvisoryFGF5 hr
Feb 13, 3:23 AM CSTWinter Storm WatchFGF23 hr
Feb 14, 2:39 AM CSTWinter Weather AdvisoryFGF33 hr
Feb 19, 3:18 AM CSTWinter Weather AdvisoryFGF42 hr
Feb 21, 1:08 PM CSTWind Chill AdvisoryFGF47 hr
Feb 23, 12:05 PM CSTWind Chill AdvisoryFGF22 hr
Feb 24, 10:29 AM CSTWind Chill AdvisoryFGF24 hr
Mar 6, 3:48 PM CSTWinter Weather AdvisoryFGF45 hr
Mar 9, 1:49 PM CSTWinter Storm WatchFGF37 hr
Mar 10, 1:47 PM CSTBlizzard WarningFGF40 hr
Mar 11, 2:23 AM CSTWinter Weather AdvisoryFGF34 hr
Mar 11, 10:08 AM CSTMesoscale DiscussionSPC4 hr
Mar 11, 6:10 PM CSTMesoscale DiscussionSPC4 hr
Mar 20, 3:53 AM CDTWinter Storm WatchFGF24 hr
Mar 21, 3:50 AM CDTWinter Storm WarningFGF24 hr
Mar 21, 3:50 AM CDTWinter Weather AdvisoryFGF27 hr
Apr 2, 3:29 AM CDTWinter Storm WatchFGF33 hr
Apr 3, 12:03 PM CDTBlizzard WarningFGF64 hr
Apr 4, 8:34 PM CDTMesoscale DiscussionSPC116 min
Apr 5, 10:55 AM CDTWinter Weather AdvisoryFGF19 hr
Apr 7, 9:28 AM CDTWinter Weather AdvisoryFGF6 hr
Apr 19, 5:20 AM CDTWinter Storm WatchFGF23 hr
Apr 20, 4:01 AM CDTWinter Storm WarningFGF24 hr
Apr 20, 4:01 AM CDTWinter Weather AdvisoryFGF41 hr
Apr 27, 3:53 AM CDTDense Fog AdvisoryFGF6 hr
Apr 30, 3:19 AM CDTWind AdvisoryFGF17 hr
May 1, 3:03 AM CDTRed Flag WarningFGF17 hr
May 1, 2:36 PM CDTFire Weather WatchFGF12 hr
May 2, 2:52 AM CDTRed Flag WarningFGF17 hr
May 13, 4:21 PM CDTFire Weather WatchFGF39 hr
May 23, 1:42 PM CDTSpecial Weather StatementFGF33 min
May 23, 2:21 PM CDTSpecial Weather StatementFGF24 min
May 23, 2:46 PM CDTSpecial Weather StatementFGF29 min
May 27, 1:22 PM CDTFire Weather WatchFGF14 hr
May 27, 1:22 PM CDTRed Flag WarningFGF8 hr
May 28, 2:55 AM CDTRed Flag WarningFGF18 hr
Jun 1, 4:30 PM CDTSpecial Weather StatementFGF30 min
Jun 24, 3:42 PM CDTTornado WatchSPC5 hr
Jul 13, 3:18 PM CDTSevere Thunderstorm WarningFGF42 min
Jul 13, 3:57 PM CDTSpecial Weather StatementFGF33 min
Jul 13, 4:26 PM CDTSpecial Weather StatementFGF34 min
Jul 19, 2:41 PM CDTMesoscale DiscussionSPC94 min
Jul 26, 12:39 AM CDTSevere Thunderstorm Warning Considerable damage threatFGF51 min
Jul 26, 11:58 PM CDTSevere Thunderstorm WarningFGF30 min
Aug 1, 3:22 PM CDTMesoscale DiscussionSPC113 min
Aug 1, 3:34 PM CDTSpecial Weather StatementFGF26 min
Aug 1, 3:52 PM CDTSevere Thunderstorm WatchSPC8 hr
Aug 1, 4:17 PM CDTTornado WarningFGF43 min
Aug 1, 4:50 PM CDTSevere Thunderstorm WarningFGF55 min
Aug 1, 5:44 PM CDTMesoscale DiscussionSPC91 min
Aug 16, 3:32 AM CDTWind AdvisoryFGF17 hr
Sep 4, 9:17 PM CDTMesoscale DiscussionSPC118 min
Sep 4, 9:38 PM CDTSevere Thunderstorm WatchSPC5 hr
Sep 5, 12:24 AM CDTSevere Thunderstorm WarningFGF66 min
Sep 5, 12:34 AM CDTSevere Thunderstorm Warning Destructive damage threatFGF41 min
Sep 5, 12:36 AM CDTMesoscale DiscussionSPC84 min
Sep 5, 1:12 AM CDTSevere Thunderstorm Warning Destructive damage threatFGF63 min
Sep 12, 2:55 PM CDTFrost AdvisoryFGF18 hr
Sep 17, 5:06 AM CDTDense Fog AdvisoryFGF5 hr
Sep 29, 8:49 PM CDTDense Fog AdvisoryFGF13 hr
Oct 5, 2:33 PM CDTFreeze WatchFGF24 hr
Oct 6, 10:39 AM CDTFrost AdvisoryFGF23 hr
Oct 9, 2:06 PM CDTFreeze WarningFGF20 hr
Oct 25, 3:22 PM CDTWinter Weather AdvisoryFGF46 hr
Nov 4, 2:10 PM CDTWinter Weather AdvisoryFGF110 min
Dec 8, 3:37 AM CSTWinter Weather AdvisoryFGF35 hr
Dec 9, 3:01 PM CSTWinter Weather AdvisoryFGF3 hr
Dec 22, 1:58 AM CSTDense Fog AdvisoryFGF35 hr
Dec 24, 2:44 PM CSTWinter Storm WatchFGF21 hr
Dec 24, 2:44 PM CSTWinter Weather AdvisoryFGF61 hr
Dec 28, 9:10 AM CSTDense Fog AdvisoryFGF6 hr
Dec 28, 3:17 PM CSTDense Fog AdvisoryFGF15 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 archive20222024

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.