Alert archive / North Dakota / McLean County

Weather alerts in McLean County, North Dakota, 2008

162 weather alerts in 2008, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

McLean County and its neighbors

Each county as a circle sized by its count in 2008. Tap one for its archive.

Alerts
162
Warnings
102
Watches
24
Advisories
4
Busiest month
July51 alerts
Busiest day
July 31, 200818 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 15 tornado warnings covering McLean County in 2008 had a tornado report inside them; 1 of 2 tornado reports fell inside a warning, on average 20 minutes after it went out.

McLean County, 2008

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings15193%250%20 min
Severe thunderstorm warnings663055%2588%27 min
Flash flood warnings110%1100%1 min

Each office's whole area, 2008

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Bismarck, ND: tornado warnings601575%2479%14 min
NWS Bismarck, ND: severe thunderstorm warnings43213469%21690%27 min
NWS Bismarck, ND: flash flood warnings10370%475%10 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
Feb 13, 9:39 AM CSTMesoscale DiscussionSPC6 hr
Mar 24, 5:03 AM CDTRed Flag WarningBIS17 hr
Apr 4, 4:55 AM CDTRed Flag WarningBIS16 hr
Apr 13, 4:05 AM CDTFire Weather WatchBIS25 hr
Apr 14, 4:58 AM CDTRed Flag WarningBIS17 hr
Apr 15, 4:24 AM CDTRed Flag WarningBIS18 hr
Apr 16, 2:21 PM CDTRed Flag WarningBIS7 hr
Apr 17, 4:12 AM CDTRed Flag WarningBIS17 hr
Apr 17, 4:03 PM CDTFire Weather WatchBIS13 hr
Apr 18, 4:38 AM CDTRed Flag WarningBIS16 hr
Apr 18, 3:43 PM CDTFire Weather WatchBIS13 hr
Apr 19, 4:37 AM CDTRed Flag WarningBIS20 hr
Apr 20, 5:25 AM CDTRed Flag WarningBIS17 hr
Apr 20, 7:05 PM CDTMesoscale DiscussionSPC55 min
Apr 21, 4:19 PM CDTFire Weather WatchBIS12 hr
Apr 22, 4:45 AM CDTRed Flag WarningBIS17 hr
Apr 28, 4:07 AM CDTRed Flag WarningBIS17 hr
May 2, 5:22 AM CDTRed Flag WarningBIS16 hr
May 3, 11:10 AM CDTRed Flag WarningBIS10 hr
May 4, 4:25 AM CDTRed Flag WarningBIS17 hr
May 16, 4:37 AM CDTRed Flag WarningBIS16 hr
May 16, 1:45 PM CDTFire Weather WatchBIS15 hr
May 17, 4:21 AM CDTRed Flag WarningBIS17 hr
May 18, 3:45 PM CDTFire Weather WatchBIS13 hr
May 19, 4:29 AM CDTRed Flag WarningBIS17 hr
May 21, 12:56 PM CDTRed Flag WarningBIS8 hr
May 24, 6:24 PM CDTTornado WatchSPC5 hr
May 24, 8:50 PM CDTTornado WarningBIS25 min
May 24, 8:54 PM CDTTornado WarningBIS36 min
May 24, 9:26 PM CDTMesoscale DiscussionSPC2 hr
Jun 3, 7:55 PM CDTSevere Thunderstorm WarningBIS65 min
Jun 3, 8:20 PM CDTTornado WarningBIS25 min
Jun 3, 8:58 PM CDTSevere Thunderstorm WarningBIS34 min
Jun 8, 2:53 PM CDTMesoscale DiscussionSPC2 hr
Jun 11, 11:23 AM CDTSevere Thunderstorm WarningBIS37 min
Jun 11, 12:04 PM CDTSevere Thunderstorm WarningBIS30 min
Jun 11, 12:28 PM CDTSevere Thunderstorm WarningBIS38 min
Jun 13, 5:33 PM CDTMesoscale DiscussionSPC87 min
Jun 14, 1:16 PM CDTMesoscale DiscussionSPC89 min
Jun 14, 1:43 PM CDTSevere Thunderstorm WatchSPC6 hr
Jun 14, 4:02 PM CDTSevere Thunderstorm WarningBIS58 min
Jun 14, 4:50 PM CDTSevere Thunderstorm WarningBIS55 min
Jun 14, 5:01 PM CDTSevere Thunderstorm WarningBIS45 min
Jun 18, 2:06 PM CDTSevere Thunderstorm WarningBIS54 min
Jun 18, 2:27 PM CDTMesoscale DiscussionSPC93 min
Jun 18, 2:39 PM CDTSevere Thunderstorm WarningBIS51 min
Jun 18, 2:56 PM CDTSevere Thunderstorm WarningBIS49 min
Jun 18, 3:47 PM CDTSevere Thunderstorm WarningBIS43 min
Jun 18, 3:53 PM CDTTornado WarningBIS21 min
Jun 18, 4:18 PM CDTAreal Flood AdvisoryBIS3 hr
Jun 18, 4:25 PM CDTSevere Thunderstorm WarningBIS50 min
Jun 18, 4:59 PM CDTSevere Thunderstorm WatchSPC5 hr
Jun 18, 5:14 PM CDTSevere Thunderstorm WarningBIS61 min
Jun 18, 5:38 PM CDTTornado WarningBIS37 min
Jun 18, 6:10 PM CDTSevere Thunderstorm WarningBIS50 min
Jun 18, 6:15 PM CDTTornado WarningBIS30 min
Jun 18, 6:58 PM CDTSevere Thunderstorm WarningBIS62 min
Jun 18, 6:59 PM CDTTornado WarningBIS31 min
Jun 18, 7:13 PM CDTSevere Thunderstorm WarningBIS62 min
Jun 18, 7:58 PM CDTSevere Thunderstorm WarningBIS62 min
Jun 18, 8:44 PM CDTSevere Thunderstorm WarningBIS61 min
Jun 18, 8:46 PM CDTMesoscale DiscussionSPC89 min
Jun 18, 9:17 PM CDTSevere Thunderstorm WarningBIS48 min
Jun 18, 10:31 PM CDTSevere Thunderstorm WarningBIS29 min
Jun 19, 6:20 PM CDTSevere Thunderstorm WarningBIS55 min
Jun 24, 2:51 PM CDTSevere Thunderstorm WatchSPC6 hr
Jun 24, 4:43 PM CDTSevere Thunderstorm WarningBIS62 min
Jun 24, 5:50 PM CDTSevere Thunderstorm WarningBIS55 min
Jun 24, 6:46 PM CDTSevere Thunderstorm WarningBIS20 min
Jun 24, 7:36 PM CDTSevere Thunderstorm WarningBIS54 min
Jun 24, 8:29 PM CDTSevere Thunderstorm WarningBIS61 min
Jun 26, 1:41 PM CDTMesoscale DiscussionSPC94 min
Jun 26, 1:59 PM CDTSevere Thunderstorm WatchSPC5 hr
Jun 26, 4:18 PM CDTSevere Thunderstorm WarningBIS57 min
Jun 26, 4:55 PM CDTSevere Thunderstorm WarningBIS65 min
Jun 26, 5:06 PM CDTSevere Thunderstorm WarningBIS54 min
Jun 26, 6:00 PM CDTSevere Thunderstorm WarningBIS60 min
Jun 26, 6:49 PM CDTSevere Thunderstorm WarningBIS56 min
Jul 6, 11:28 PM CDTSevere Thunderstorm WarningBIS62 min
Jul 10, 2:41 AM CDTMesoscale DiscussionSPC3 hr
Jul 10, 3:46 PM CDTMesoscale DiscussionSPC59 min
Jul 10, 4:07 PM CDTSevere Thunderstorm WarningBIS53 min
Jul 10, 4:11 PM CDTTornado WatchSPC7 hr
Jul 10, 4:35 PM CDTTornado WarningBIS25 min
Jul 10, 5:00 PM CDTSevere Thunderstorm WarningBIS60 min
Jul 10, 11:19 PM CDTSevere Thunderstorm WatchSPC8 hr
Jul 16, 3:34 AM CDTMesoscale DiscussionSPC56 min
Jul 19, 1:49 PM CDTMesoscale DiscussionSPC86 min
Jul 19, 2:53 PM CDTSevere Thunderstorm WatchSPC7 hr
Jul 19, 5:01 PM CDTMesoscale DiscussionSPC89 min
Jul 23, 2:03 AM CDTSevere Thunderstorm WatchSPC7 hr
Jul 26, 9:57 PM CDTSevere Thunderstorm WatchSPC6 hr
Jul 28, 6:14 AM CDTSevere Thunderstorm WatchSPC8 hr
Jul 28, 7:50 AM CDTMesoscale DiscussionSPC85 min
Jul 28, 8:11 AM CDTSevere Thunderstorm WarningBIS49 min
Jul 28, 9:00 AM CDTSevere Thunderstorm WarningBIS60 min
Jul 28, 9:59 AM CDTSevere Thunderstorm WarningBIS46 min
Jul 28, 10:54 AM CDTSevere Thunderstorm WarningBIS27 min
Jul 28, 12:17 PM CDTMesoscale DiscussionSPC58 min
Jul 28, 7:09 PM CDTMesoscale DiscussionSPC111 min
Jul 28, 7:09 PM CDTMesoscale DiscussionSPC2 hr
Jul 28, 7:14 PM CDTSevere Thunderstorm WarningBIS61 min
Jul 28, 7:34 PM CDTTornado WatchSPC4 hr
Jul 28, 7:56 PM CDTSevere Thunderstorm WarningBIS49 min
Jul 28, 8:33 PM CDTSevere Thunderstorm WarningBIS12 min
Jul 28, 8:42 PM CDTTornado WarningBIS63 min
Jul 30, 3:39 PM CDTMesoscale DiscussionSPC66 min
Jul 30, 4:07 PM CDTSevere Thunderstorm WatchSPC7 hr
Jul 30, 6:36 PM CDTSevere Thunderstorm WarningBIS39 min
Jul 30, 6:40 PM CDTSevere Thunderstorm WarningBIS50 min
Jul 30, 6:45 PM CDTSevere Thunderstorm WarningBIS60 min
Jul 30, 7:04 PM CDTMesoscale DiscussionSPC56 min
Jul 30, 7:59 PM CDTSevere Thunderstorm WarningBIS61 min
Jul 30, 8:27 PM CDTSevere Thunderstorm WarningBIS63 min
Jul 30, 8:39 PM CDTSevere Thunderstorm WarningBIS66 min
Jul 30, 8:56 PM CDTAreal Flood AdvisoryBIS3 hr
Jul 30, 9:31 PM CDTSevere Thunderstorm WarningBIS59 min
Jul 30, 9:42 PM CDTMesoscale DiscussionSPC93 min
Jul 30, 9:45 PM CDTSevere Thunderstorm WarningBIS60 min
Jul 30, 10:04 PM CDTSevere Thunderstorm WatchSPC7 hr
Jul 30, 10:11 PM CDTTornado WarningBIS34 min
Jul 30, 10:36 PM CDTSevere Thunderstorm WarningBIS54 min
Jul 30, 10:44 PM CDTSevere Thunderstorm WarningBIS40 min
Jul 30, 10:56 PM CDTFlash Flood WarningBIS6 hr
Jul 30, 11:01 PM CDTSevere Thunderstorm WarningBIS59 min
Jul 30, 11:17 PM CDTTornado WarningBIS28 min
Jul 30, 11:19 PM CDTAreal Flood AdvisoryBIS111 min
Jul 30, 11:42 PM CDTTornado WarningBIS33 min
Jul 30, 11:45 PM CDTAreal Flood AdvisoryBIS6 hr
Aug 1, 8:35 PM CDTMesoscale DiscussionSPC55 min
Aug 1, 8:42 PM CDTSevere Thunderstorm WarningBIS63 min
Aug 1, 9:08 PM CDTSevere Thunderstorm WatchSPC7 hr
Aug 1, 9:28 PM CDTSevere Thunderstorm WarningBIS62 min
Aug 1, 10:54 PM CDTMesoscale DiscussionSPC96 min
Aug 2, 7:07 AM CDTSevere Thunderstorm WarningBIS68 min
Aug 2, 8:16 AM CDTSevere Thunderstorm WarningBIS59 min
Aug 2, 1:45 PM CDTMesoscale DiscussionSPC60 min
Aug 3, 12:05 AM CDTSevere Thunderstorm WatchSPC8 hr
Aug 3, 3:40 AM CDTSevere Thunderstorm WarningBIS65 min
Aug 3, 4:10 AM CDTMesoscale DiscussionSPC95 min
Aug 3, 5:18 AM CDTSevere Thunderstorm WarningBIS42 min
Aug 11, 3:40 PM CDTTornado WarningBIS35 min
Aug 21, 3:33 PM CDTMesoscale DiscussionSPC117 min
Aug 21, 7:57 PM CDTSevere Thunderstorm WarningBIS63 min
Aug 21, 8:09 PM CDTSevere Thunderstorm WarningBIS66 min
Aug 21, 10:36 PM CDTSevere Thunderstorm WarningBIS54 min
Aug 22, 1:40 AM CDTSevere Thunderstorm WarningBIS50 min
Aug 22, 1:57 AM CDTTornado WarningBIS33 min
Aug 22, 2:21 AM CDTSevere Thunderstorm WarningBIS39 min
Aug 22, 2:41 AM CDTTornado WarningBIS34 min
Aug 22, 3:00 AM CDTSevere Thunderstorm WarningBIS45 min
Aug 22, 3:05 AM CDTSevere Thunderstorm WatchSPC4 hr
Aug 26, 2:33 PM CDTMesoscale DiscussionSPC2 hr
Aug 29, 3:54 AM CDTFire Weather WatchBIS24 hr
Aug 30, 4:11 AM CDTRed Flag WarningBIS18 hr
Sep 5, 4:07 PM CDTSevere Thunderstorm WarningBIS23 min
Oct 7, 3:56 PM CDTRed Flag WarningBIS29 hr
Nov 6, 3:33 AM CSTMesoscale DiscussionSPC4 hr
Nov 14, 2:17 PM CSTMesoscale DiscussionSPC58 min
Dec 13, 6:29 PM CSTMesoscale DiscussionSPC4 hr
Dec 29, 6:46 PM CSTMesoscale DiscussionSPC4 hr
Dec 30, 12:49 AM CSTMesoscale DiscussionSPC4 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 archive20072009

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.