Alert archive / North Dakota / Benson County

Weather alerts in Benson County, North Dakota, 2023

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

Benson County and its neighbors

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

Alerts
89
Warnings
23
Watches
10
Advisories
36
Busiest month
June13 alerts
Busiest day
September 5, 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.

Benson County, 2023

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings16288%30%
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 15, 1:57 AM CSTDense Fog AdvisoryFGF7 hr
Jan 15, 3:23 PM CSTDense Fog AdvisoryFGF17 hr
Jan 16, 8:14 AM CSTWinter Weather AdvisoryFGF28 hr
Jan 18, 8:40 AM CSTWinter Weather AdvisoryFGF9 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
Feb 1, 1:53 PM CSTWind Chill AdvisoryFGF46 hr
Feb 5, 6:24 PM CSTDense Fog AdvisoryFGF8 hr
Feb 12, 4:44 AM CSTDense Fog AdvisoryFGF5 hr
Feb 14, 2:39 AM CSTWinter Weather AdvisoryFGF33 hr
Feb 14, 2:43 AM CSTWind AdvisoryFGF15 hr
Feb 19, 3:18 AM CSTWinter Weather AdvisoryFGF42 hr
Feb 21, 1:08 PM CSTWind Chill WarningFGF47 hr
Feb 23, 12:05 PM CSTWind Chill AdvisoryFGF22 hr
Feb 24, 10:29 AM CSTWind Chill AdvisoryFGF24 hr
Mar 9, 1:49 PM CSTWinter Storm WatchFGF37 hr
Mar 10, 1:47 PM CSTBlizzard WarningFGF40 hr
Mar 10, 11:08 PM CSTMesoscale DiscussionSPC5 hr
Mar 11, 2:23 AM CSTWinter Weather AdvisoryFGF34 hr
Mar 11, 6:10 PM CSTMesoscale DiscussionSPC4 hr
Mar 17, 4:07 AM CDTWinter Weather AdvisoryFGF17 hr
Mar 24, 11:59 PM CDTDense Fog AdvisoryFGF12 hr
Apr 2, 3:29 AM CDTWinter Storm WatchFGF33 hr
Apr 3, 12:03 PM CDTBlizzard WarningFGF64 hr
Apr 5, 1:02 PM CDTMesoscale DiscussionSPC4 hr
Apr 20, 4:01 AM CDTWinter Weather AdvisoryFGF41 hr
May 10, 7:48 PM CDTSevere Thunderstorm WarningFGF42 min
May 10, 7:54 PM CDTSpecial Weather StatementFGF36 min
May 10, 8:01 PM CDTSevere Thunderstorm WarningFGF44 min
May 10, 8:29 PM CDTSevere Thunderstorm WarningFGF46 min
May 29, 7:00 PM CDTSpecial Weather StatementFGF30 min
Jun 8, 7:11 PM CDTSevere Thunderstorm WarningFGF49 min
Jun 8, 8:15 PM CDTSevere Thunderstorm WarningFGF45 min
Jun 8, 9:34 PM CDTSevere Thunderstorm Warning Considerable damage threatFGF41 min
Jun 20, 4:52 PM CDTSevere Thunderstorm WatchSPC5 hr
Jun 20, 6:08 PM CDTSevere Thunderstorm WarningFGF52 min
Jun 20, 6:58 PM CDTSevere Thunderstorm WarningFGF47 min
Jun 20, 8:40 PM CDTMesoscale DiscussionSPC2 hr
Jun 20, 8:52 PM CDTSpecial Weather StatementFGF38 min
Jun 27, 7:38 PM CDTSpecial Weather StatementFGF37 min
Jun 27, 8:55 PM CDTSevere Thunderstorm WarningFGF18 min
Jun 28, 4:51 PM CDTSevere Thunderstorm WarningFGF39 min
Jun 28, 5:37 PM CDTSpecial Weather StatementFGF38 min
Jun 28, 5:43 PM CDTSevere Thunderstorm WarningFGF20 min
Jul 2, 12:52 AM CDTSpecial Weather StatementFGF38 min
Jul 14, 6:01 PM CDTSpecial Weather StatementFGF29 min
Jul 14, 6:32 PM CDTSpecial Weather StatementFGF28 min
Jul 18, 5:42 PM CDTMesoscale DiscussionSPC2 hr
Jul 18, 6:20 PM CDTSevere Thunderstorm WatchSPC8 hr
Jul 31, 7:06 PM CDTSevere Thunderstorm WatchSPC4 hr
Jul 31, 8:48 PM CDTMesoscale DiscussionSPC87 min
Aug 1, 3:22 PM CDTMesoscale DiscussionSPC113 min
Aug 16, 3:32 AM CDTWind AdvisoryFGF17 hr
Aug 24, 5:51 AM CDTDense Fog AdvisoryFGF4 hr
Aug 24, 1:20 PM CDTMesoscale DiscussionSPC115 min
Aug 24, 2:45 PM CDTSevere Thunderstorm WatchSPC5 hr
Aug 24, 5:56 PM CDTMesoscale DiscussionSPC2 hr
Aug 24, 6:49 PM CDTSpecial Weather StatementFGF26 min
Aug 26, 5:51 AM CDTDense Fog AdvisoryFGF4 hr
Sep 4, 9:17 PM CDTMesoscale DiscussionSPC118 min
Sep 4, 9:38 PM CDTSevere Thunderstorm WatchSPC5 hr
Sep 4, 10:01 PM CDTSevere Thunderstorm WarningFGF59 min
Sep 4, 10:58 PM CDTSevere Thunderstorm WarningFGF47 min
Sep 4, 11:39 PM CDTSevere Thunderstorm WarningFGF66 min
Sep 4, 11:47 PM CDTSevere Thunderstorm WarningFGF28 min
Sep 17, 5:06 AM CDTDense Fog AdvisoryFGF5 hr
Sep 25, 3:40 AM CDTDense Fog AdvisoryFGF8 hr
Oct 2, 12:55 AM CDTDense Fog AdvisoryFGF11 hr
Oct 3, 7:31 PM CDTSevere Thunderstorm WarningFGF44 min
Oct 4, 2:43 PM CDTFreeze WatchFGF24 hr
Oct 5, 2:01 PM CDTWind AdvisoryFGF14 hr
Oct 5, 2:33 PM CDTFreeze WatchFGF24 hr
Oct 6, 10:39 AM CDTFreeze WarningFGF23 hr
Oct 9, 2:06 PM CDTFreeze WarningFGF20 hr
Oct 24, 3:18 AM CDTWinter Storm WatchFGF36 hr
Oct 25, 3:32 AM CDTWinter Storm WarningFGF51 hr
Oct 26, 10:21 PM CDTMesoscale DiscussionSPC6 hr
Nov 8, 1:57 AM CSTDense Fog AdvisoryFGF5 hr
Dec 5, 3:19 AM CSTDense Fog AdvisoryFGF9 hr
Dec 8, 3:37 AM CSTWinter Weather AdvisoryFGF35 hr
Dec 10, 5:04 PM CSTDense Fog AdvisoryFGF16 hr
Dec 17, 9:46 AM CSTWind AdvisoryFGF10 hr
Dec 22, 1:58 AM CSTDense Fog AdvisoryFGF35 hr
Dec 23, 6:06 PM CSTDense Fog AdvisoryFGF10 hr
Dec 24, 5:57 AM CSTWinter Weather AdvisoryFGF6 hr
Dec 24, 2:44 PM CSTWinter Weather AdvisoryFGF61 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.