Alert archive / North Dakota / Richland County

Weather alerts in Richland County, North Dakota, 2021

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

Richland County and its neighbors

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

Alerts
103
Warnings
38
Watches
19
Advisories
26
Busiest month
July18 alerts
Busiest day
July 26, 20218 alerts

Over time

By month

Warning verification

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

1 of 1 tornado warnings covering Richland County in 2021 had a tornado report inside them; 2 of 3 tornado reports fell inside a warning, on average 5 minutes after it went out.

Richland County, 2021

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings110%367%5 min
Severe thunderstorm warnings19190%2685%27 min
Flash flood warnings00

Each office's whole area, 2021

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Grand Forks, ND: tornado warnings15847%2752%5 min
NWS Grand Forks, ND: severe thunderstorm warnings12811113%41282%26 min
NWS Grand Forks, ND: flash flood warnings10100%20%

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 1, 6:36 PM CSTDense Fog AdvisoryFGF16 hr
Jan 7, 9:03 AM CSTDense Fog AdvisoryFGF26 hr
Jan 8, 11:03 AM CSTDense Fog AdvisoryFGF25 hr
Jan 13, 1:00 PM CSTWinter Weather AdvisoryFGF53 hr
Jan 20, 3:30 AM CSTWind AdvisoryFGF16 hr
Jan 29, 2:55 PM CSTWinter Weather AdvisoryFGF30 hr
Feb 4, 4:44 AM CSTWind Chill WatchFGF23 hr
Feb 5, 3:16 AM CSTWind Chill WarningFGF10 days
Feb 5, 3:16 AM CSTWind Chill AdvisoryFGF9 days
Feb 15, 12:04 PM CSTWind Chill AdvisoryFGF46 hr
Feb 22, 3:29 PM CSTWinter Weather AdvisoryFGF33 hr
Mar 10, 3:39 AM CSTWinter Weather AdvisoryFGF21 hr
Mar 26, 2:51 PM CDTFire Weather WatchFGF48 hr
Mar 28, 3:13 PM CDTRed Flag WarningFGF32 hr
Mar 28, 3:16 PM CDTWind AdvisoryFGF55 hr
Mar 31, 3:20 AM CDTFire Weather WatchFGF11 hr
Mar 31, 2:32 PM CDTRed Flag WarningFGF31 hr
Apr 21, 11:22 AM CDTFire Weather WatchFGF17 hr
Apr 22, 3:54 AM CDTRed Flag WarningFGF16 hr
May 1, 3:51 AM CDTRed Flag WarningFGF16 hr
May 5, 2:55 PM CDTFire Weather WatchFGF12 hr
May 6, 3:15 AM CDTRed Flag WarningFGF19 hr
May 14, 5:49 PM CDTSevere Thunderstorm WarningFGF29 min
May 24, 1:29 AM CDTSpecial Weather StatementFGF46 min
May 25, 3:05 AM CDTWind AdvisoryFGF18 hr
May 27, 3:56 AM CDTFreeze WatchFGF11 hr
May 27, 2:33 PM CDTFreeze WarningFGF17 hr
Jun 3, 3:34 AM CDTFire Weather WatchFGF36 hr
Jun 3, 3:02 PM CDTRed Flag WarningFGF30 hr
Jun 4, 9:25 PM CDTSpecial Weather StatementFGF50 min
Jun 7, 5:45 PM CDTSevere Thunderstorm WatchSPC8 hr
Jun 7, 10:03 PM CDTSevere Thunderstorm WarningFGF57 min
Jun 7, 10:08 PM CDTSevere Thunderstorm WarningFGF67 min
Jun 7, 11:08 PM CDTSpecial Weather StatementFGF52 min
Jun 7, 11:33 PM CDTMesoscale DiscussionSPC87 min
Jun 8, 3:36 AM CDTMesoscale DiscussionSPC84 min
Jun 10, 12:52 AM CDTSpecial Weather StatementFGF53 min
Jun 10, 3:43 AM CDTHeat AdvisoryFGF16 hr
Jun 11, 1:58 AM CDTSevere Thunderstorm WatchSPC5 hr
Jun 11, 4:07 AM CDTSevere Thunderstorm WarningFGF38 min
Jun 11, 4:37 AM CDTMesoscale DiscussionSPC83 min
Jun 11, 4:42 AM CDTSevere Thunderstorm WarningFGF63 min
Jun 11, 5:39 AM CDTSevere Thunderstorm WarningFGF66 min
Jul 19, 2:27 PM CDTSevere Thunderstorm WarningFGF63 min
Jul 19, 3:13 PM CDTSevere Thunderstorm WarningFGF62 min
Jul 23, 7:02 PM CDTSevere Thunderstorm WatchSPC7 hr
Jul 23, 10:33 PM CDTMesoscale DiscussionSPC117 min
Jul 23, 11:50 PM CDTSpecial Weather StatementFGF55 min
Jul 24, 12:41 AM CDTSevere Thunderstorm WarningFGF49 min
Jul 25, 9:38 PM CDTSevere Thunderstorm WarningFGF37 min
Jul 25, 9:49 PM CDTMesoscale DiscussionSPC116 min
Jul 25, 10:04 PM CDTSevere Thunderstorm WarningFGF56 min
Jul 25, 11:01 PM CDTSpecial Weather StatementFGF29 min
Jul 25, 11:10 PM CDTSevere Thunderstorm WarningFGF55 min
Jul 26, 12:11 AM CDTSpecial Weather StatementFGF34 min
Jul 26, 4:42 PM CDTMesoscale DiscussionSPC2 hr
Jul 26, 5:22 PM CDTSevere Thunderstorm WatchSPC5 hr
Jul 26, 7:40 PM CDTMesoscale DiscussionSPC95 min
Jul 28, 2:48 AM CDTMesoscale DiscussionSPC2 hr
Jul 28, 3:12 AM CDTSpecial Weather StatementFGF63 min
Jul 28, 3:43 AM CDTSevere Thunderstorm WarningFGF39 min
Aug 9, 4:01 PM CDTSevere Thunderstorm WatchSPC7 hr
Aug 20, 1:41 PM CDTMesoscale DiscussionSPC3 hr
Aug 20, 2:24 PM CDTSevere Thunderstorm WatchSPC8 hr
Aug 22, 10:01 AM CDTWind AdvisoryFGF10 hr
Aug 22, 3:36 PM CDTSevere Thunderstorm WatchSPC5 hr
Aug 23, 10:11 PM CDTSevere Thunderstorm WatchSPC5 hr
Aug 23, 11:32 PM CDTMesoscale DiscussionSPC118 min
Aug 24, 1:12 AM CDTSevere Thunderstorm Warning Destructive damage threatFGF63 min
Aug 24, 2:14 AM CDTSevere Thunderstorm WarningFGF46 min
Aug 26, 12:02 PM CDTHigh Wind WarningFGF3 hr
Aug 28, 7:08 AM CDTSevere Thunderstorm WatchSPC5 hr
Oct 9, 2:56 PM CDTSevere Thunderstorm WatchSPC7 hr
Oct 9, 5:46 PM CDTSevere Thunderstorm Warning Considerable damage threatFGF59 min
Oct 9, 6:35 PM CDTTornado WarningFGF25 min
Oct 9, 6:43 PM CDTSevere Thunderstorm WarningFGF62 min
Oct 9, 7:26 PM CDTSevere Thunderstorm Warning Considerable damage threatFGF64 min
Oct 9, 8:06 PM CDTSevere Thunderstorm WarningFGF41 min
Oct 15, 11:45 AM CDTFreeze WarningFGF21 hr
Oct 26, 3:37 AM CDTWind AdvisoryFGF14 hr
Oct 28, 1:41 AM CDTDense Fog AdvisoryFGF7 hr
Nov 10, 3:06 PM CSTWinter Weather AdvisoryFGF45 hr
Nov 13, 2:39 PM CSTWind AdvisoryFGF6 hr
Nov 13, 5:29 PM CSTHigh Wind WarningFGF4 hr
Nov 13, 9:05 PM CSTHigh Wind WarningFGF114 min
Nov 16, 2:59 AM CSTWind AdvisoryFGF43 hr
Dec 3, 3:22 AM CSTWinter Storm WatchFGF35 hr
Dec 4, 2:05 PM CSTWinter Weather AdvisoryFGF40 hr
Dec 5, 6:04 PM CSTBlizzard WarningFGF9 hr
Dec 15, 3:25 AM CSTWinter Weather AdvisoryFGF31 hr
Dec 15, 6:43 AM CSTDense Fog AdvisoryFGF13 hr
Dec 17, 3:00 AM CSTWinter Weather AdvisoryFGF21 hr
Dec 17, 5:50 PM CSTWinter Storm WarningFGF6 hr
Dec 24, 2:08 PM CSTWinter Weather AdvisoryFGF28 hr
Dec 25, 3:21 AM CSTWinter Storm WatchFGF24 hr
Dec 26, 3:22 AM CSTWinter Storm WarningFGF36 hr
Dec 26, 4:44 PM CSTMesoscale DiscussionSPC4 hr
Dec 26, 9:07 PM CSTMesoscale DiscussionSPC4 hr
Dec 27, 4:27 AM CSTBlizzard WarningFGF11 hr
Dec 27, 3:41 PM CSTWind Chill AdvisoryFGF26 hr
Dec 28, 3:21 PM CSTWind Chill WarningFGF40 hr
Dec 28, 3:21 PM CSTWind Chill AdvisoryFGF45 hr
Dec 30, 3:08 PM CSTWind Chill WarningFGF67 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.