Alert archive / North Dakota / Sargent County

Weather alerts in Sargent County, North Dakota, 2015

127 weather alerts in 2015, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Sargent County and its neighbors

Each county as a circle sized by its count in 2015. Tap one for its archive.

Alerts
127
Warnings
18
Watches
22
Advisories
54
Busiest month
July21 alerts
Busiest day
April 15, 20154 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 Sargent County in 2015 had a tornado report inside them.

Sargent County, 2015

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings10100%0
Severe thunderstorm warnings10100%0
Flash flood warnings110%0

Each office's whole area, 2015

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Grand Forks, ND: tornado warnings521473%5485%22 min
NWS Grand Forks, ND: severe thunderstorm warnings13310323%32469%27 min
NWS Grand Forks, ND: flash flood warnings110%2100%253 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 2, 4:17 AM CSTWinter Weather AdvisoryFGF35 hr
Jan 3, 2:49 PM CSTWind Chill AdvisoryFGF45 hr
Jan 5, 3:13 PM CSTWind Chill AdvisoryFGF33 hr
Jan 6, 3:41 AM CSTWind Chill WarningFGF32 hr
Jan 8, 3:06 AM CSTWinter Weather AdvisoryFGF15 hr
Jan 8, 3:33 PM CSTWind Chill AdvisoryFGF20 hr
Jan 9, 3:30 PM CSTWind Chill AdvisoryFGF21 hr
Jan 11, 2:11 PM CSTWind Chill AdvisoryFGF20 hr
Jan 12, 3:11 PM CSTWind Chill AdvisoryFGF19 hr
Jan 17, 1:22 AM CSTFreezing Rain AdvisoryFGF7 hr
Jan 17, 3:59 AM CSTWind AdvisoryFGF9 hr
Jan 31, 3:16 PM CSTWind Chill AdvisoryFGF20 hr
Feb 7, 10:03 PM CSTFreezing Rain AdvisoryFGF6 hr
Feb 9, 3:19 PM CSTWinter Weather AdvisoryFGF37 hr
Feb 10, 11:15 AM CSTWinter Weather AdvisoryFGF17 hr
Feb 11, 4:07 AM CSTWind Chill AdvisoryFGF32 hr
Feb 13, 3:15 PM CSTWind Chill AdvisoryFGF23 hr
Feb 17, 3:32 AM CSTWind Chill AdvisoryFGF55 hr
Feb 20, 2:50 PM CSTWind Chill AdvisoryFGF30 hr
Feb 21, 3:49 AM CSTWind Chill WarningFGF32 hr
Feb 22, 11:40 AM CSTWind Chill AdvisoryFGF21 hr
Feb 25, 3:12 PM CSTWind Chill AdvisoryFGF20 hr
Feb 26, 2:38 PM CSTWind Chill AdvisoryFGF19 hr
Mar 2, 2:32 PM CSTWind AdvisoryFGF27 hr
Mar 2, 2:34 PM CSTBlizzard WatchFGF13 hr
Mar 2, 2:34 PM CSTWinter Weather AdvisoryFGF25 hr
Mar 3, 3:28 PM CSTWind Chill AdvisoryFGF21 hr
Mar 4, 3:34 PM CSTWind Chill AdvisoryFGF18 hr
Mar 25, 3:36 AM CDTWind AdvisoryFGF14 hr
Mar 28, 3:33 PM CDTWind AdvisoryFGF27 hr
Mar 31, 3:13 PM CDTFire Weather WatchFGF13 hr
Apr 1, 4:17 AM CDTRed Flag WarningFGF15 hr
Apr 2, 4:05 AM CDTRed Flag WarningFGF15 hr
Apr 2, 10:32 AM CDTWind AdvisoryFGF8 hr
Apr 11, 3:27 AM CDTRed Flag WarningFGF17 hr
Apr 12, 1:46 PM CDTFire Weather WatchFGF14 hr
Apr 13, 3:37 AM CDTRed Flag WarningFGF16 hr
Apr 13, 3:06 PM CDTFire Weather WatchFGF12 hr
Apr 14, 3:31 AM CDTFire Weather WatchFGF24 hr
Apr 14, 3:31 AM CDTRed Flag WarningFGF17 hr
Apr 15, 3:15 AM CDTRed Flag WarningFGF17 hr
Apr 15, 3:38 AM CDTWind AdvisoryFGF15 hr
Apr 15, 3:42 PM CDTSpecial Weather StatementFGF48 min
Apr 15, 4:44 PM CDTSpecial Weather StatementFGF61 min
Apr 19, 3:14 PM CDTFire Weather WatchFGF13 hr
Apr 20, 5:31 AM CDTWind AdvisoryFGF15 hr
Apr 21, 11:17 AM CDTWind AdvisoryFGF8 hr
Apr 29, 2:59 PM CDTRed Flag WarningFGF28 hr
May 1, 3:10 PM CDTFire Weather WatchFGF13 hr
May 2, 4:22 AM CDTRed Flag WarningFGF16 hr
May 2, 5:58 PM CDTMesoscale DiscussionSPC2 hr
May 2, 6:48 PM CDTSpecial Weather StatementFGF57 min
May 5, 4:45 AM CDTRed Flag WarningFGF14 hr
May 8, 2:52 PM CDTFrost AdvisoryFGF18 hr
May 16, 2:10 PM CDTMesoscale DiscussionSPC95 min
May 17, 3:58 AM CDTWind AdvisoryFGF31 hr
May 18, 3:21 AM CDTFreeze WarningFGF30 hr
May 19, 2:53 PM CDTFrost AdvisoryFGF17 hr
May 28, 6:21 PM CDTSpecial Weather StatementFGF54 min
May 28, 6:32 PM CDTFlash Flood WarningFGF12 hr
May 28, 9:31 PM CDTAreal Flood AdvisoryFGF10 hr
May 29, 6:27 AM CDTAreal Flood AdvisoryFGF7 hr
Jun 2, 2:28 PM CDTMesoscale DiscussionSPC92 min
Jun 2, 2:46 PM CDTTornado WatchSPC7 hr
Jun 2, 8:54 PM CDTMesoscale DiscussionSPC66 min
Jun 2, 9:15 PM CDTSevere Thunderstorm WarningFGF45 min
Jun 6, 3:05 PM CDTMesoscale DiscussionSPC85 min
Jun 6, 5:05 PM CDTSevere Thunderstorm WatchSPC6 hr
Jun 14, 7:34 AM CDTMesoscale DiscussionSPC2 hr
Jun 19, 9:29 PM CDTMesoscale DiscussionSPC61 min
Jun 21, 8:32 PM CDTMesoscale DiscussionSPC88 min
Jun 21, 10:41 PM CDTSevere Thunderstorm WatchSPC6 hr
Jun 21, 11:25 PM CDTMesoscale DiscussionSPC95 min
Jun 22, 3:16 AM CDTMesoscale DiscussionSPC89 min
Jun 27, 2:42 PM CDTTornado WatchSPC7 hr
Jun 27, 5:54 PM CDTMesoscale DiscussionSPC66 min
Jun 27, 6:30 PM CDTTornado WarningFGF45 min
Jul 5, 1:19 PM CDTMesoscale DiscussionSPC86 min
Jul 11, 5:00 PM CDTMesoscale DiscussionSPC60 min
Jul 11, 5:40 PM CDTSevere Thunderstorm WatchSPC7 hr
Jul 11, 9:04 PM CDTMesoscale DiscussionSPC86 min
Jul 12, 3:06 PM CDTSevere Thunderstorm WatchSPC7 hr
Jul 12, 5:53 PM CDTMesoscale DiscussionSPC97 min
Jul 12, 8:16 PM CDTMesoscale DiscussionSPC59 min
Jul 15, 1:09 PM CDTMesoscale DiscussionSPC96 min
Jul 15, 3:44 PM CDTAreal Flood AdvisoryFGF5 hr
Jul 16, 2:05 PM CDTMesoscale DiscussionSPC115 min
Jul 17, 1:10 PM CDTMesoscale DiscussionSPC2 hr
Jul 17, 3:43 PM CDTSevere Thunderstorm WatchSPC7 hr
Jul 17, 6:02 PM CDTMesoscale DiscussionSPC118 min
Jul 17, 9:55 PM CDTMesoscale DiscussionSPC65 min
Jul 23, 3:58 PM CDTSevere Thunderstorm WatchSPC11 hr
Jul 23, 10:28 PM CDTMesoscale DiscussionSPC32 min
Jul 24, 12:41 AM CDTMesoscale DiscussionSPC2 hr
Jul 27, 9:41 PM CDTMesoscale DiscussionSPC3 hr
Jul 27, 10:49 PM CDTSevere Thunderstorm WatchSPC5 hr
Jul 28, 1:57 AM CDTMesoscale DiscussionSPC2 hr
Jul 28, 4:02 AM CDTWind AdvisoryFGF39 hr
Aug 1, 3:13 PM CDTMesoscale DiscussionSPC62 min
Aug 1, 6:04 PM CDTSevere Thunderstorm WatchSPC3 hr
Aug 7, 5:42 PM CDTMesoscale DiscussionSPC63 min
Aug 15, 3:36 AM CDTHeat AdvisoryFGF15 hr
Aug 15, 6:13 PM CDTSevere Thunderstorm WatchSPC6 hr
Aug 22, 9:42 AM CDTWind AdvisoryFGF33 hr
Aug 22, 2:35 PM CDTMesoscale DiscussionSPC55 min
Sep 24, 5:44 AM CDTDense Fog AdvisoryFGF5 hr
Sep 25, 3:44 AM CDTDense Fog AdvisoryFGF7 hr
Sep 28, 2:29 PM CDTFrost AdvisoryFGF18 hr
Oct 6, 3:41 PM CDTFrost AdvisoryFGF16 hr
Oct 9, 3:03 AM CDTDense Fog AdvisoryFGF7 hr
Oct 11, 10:41 AM CDTHigh Wind WatchFGF4 hr
Oct 11, 10:41 AM CDTHigh Wind WarningFGF29 hr
Oct 15, 3:36 AM CDTFreeze WarningFGF30 hr
Oct 28, 4:04 AM CDTWind AdvisoryFGF19 hr
Oct 31, 3:40 AM CDTWind AdvisoryFGF15 hr
Nov 3, 2:46 PM CSTDense Fog AdvisoryFGF31 hr
Nov 11, 3:06 AM CSTHigh Wind WatchFGF11 hr
Nov 11, 2:10 PM CSTWind AdvisoryFGF27 hr
Nov 18, 3:50 AM CSTWind AdvisoryFGF40 hr
Nov 29, 2:52 PM CSTWinter Storm WatchFGF14 hr
Nov 30, 4:23 AM CSTWinter Weather AdvisoryFGF35 hr
Dec 12, 5:03 PM CSTDense Fog AdvisoryFGF42 hr
Dec 14, 4:05 AM CSTWinter Storm WatchFGF35 hr
Dec 15, 2:43 PM CSTWinter Storm WarningFGF28 hr
Dec 15, 4:55 PM CSTMesoscale DiscussionSPC6 hr
Dec 16, 11:32 AM CSTWinter Weather AdvisoryFGF8 hr
Dec 25, 3:06 PM CSTWinter Weather AdvisoryFGF27 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 archive20142016

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.