Alert archive / North Dakota / McLean County

Weather alerts in McLean County, North Dakota, 2010

132 weather alerts in 2010, 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 2010. Tap one for its archive.

Alerts
132
Warnings
56
Watches
22
Advisories
10
Busiest month
July51 alerts
Busiest day
July 27, 201013 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 6 tornado warnings covering McLean County in 2010 had a tornado report inside them.

McLean County, 2010

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings60100%0
Severe thunderstorm warnings471764%1580%32 min
Flash flood warnings00

Each office's whole area, 2010

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Bismarck, ND: tornado warnings931089%3063%9 min
NWS Bismarck, ND: severe thunderstorm warnings43018657%40674%25 min
NWS Bismarck, ND: flash flood warnings29872%2357%83 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
Apr 7, 3:47 PM CDTFire Weather WatchBIS23 hr
Apr 8, 3:00 PM CDTRed Flag WarningBIS30 hr
Apr 9, 4:12 PM CDTFire Weather WatchBIS12 hr
Apr 10, 4:17 AM CDTRed Flag WarningBIS16 hr
Apr 13, 12:48 PM CDTSevere Thunderstorm WatchSPC6 hr
Apr 13, 3:44 PM CDTMesoscale DiscussionSPC91 min
Apr 16, 4:25 AM CDTFire Weather WatchBIS24 hr
Apr 17, 4:35 AM CDTRed Flag WarningBIS16 hr
May 22, 12:20 PM CDTSevere Thunderstorm WarningBIS55 min
May 22, 1:51 PM CDTMesoscale DiscussionSPC84 min
May 24, 7:14 PM CDTSevere Thunderstorm WarningBIS61 min
May 24, 9:04 PM CDTSevere Thunderstorm WarningBIS56 min
May 27, 8:13 AM CDTAreal Flood AdvisoryBIS3 hr
May 27, 11:53 AM CDTSevere Thunderstorm WarningBIS37 min
May 28, 6:11 PM CDTMesoscale DiscussionSPC94 min
Jun 16, 7:20 PM CDTTornado WatchSPC8 hr
Jun 17, 2:05 AM CDTMesoscale DiscussionSPC55 min
Jun 17, 12:04 PM CDTMesoscale DiscussionSPC56 min
Jun 17, 12:21 PM CDTTornado WatchSPC9 hr
Jun 17, 1:56 PM CDTSevere Thunderstorm WarningBIS64 min
Jun 17, 2:07 PM CDTSevere Thunderstorm WarningBIS53 min
Jun 17, 2:18 PM CDTMesoscale DiscussionSPC57 min
Jun 17, 2:24 PM CDTSevere Thunderstorm WarningBIS66 min
Jun 21, 3:01 AM CDTSevere Thunderstorm WarningBIS59 min
Jun 21, 3:10 AM CDTAreal Flood AdvisoryBIS22 hr
Jun 21, 9:54 PM CDTSevere Thunderstorm WatchSPC7 hr
Jun 22, 12:12 AM CDTSevere Thunderstorm WarningBIS63 min
Jun 22, 12:59 AM CDTAreal Flood AdvisoryBIS6 hr
Jun 24, 6:25 PM CDTMesoscale DiscussionSPC95 min
Jun 24, 7:23 PM CDTSevere Thunderstorm WatchSPC8 hr
Jun 24, 8:49 PM CDTMesoscale DiscussionSPC86 min
Jun 24, 10:35 PM CDTMesoscale DiscussionSPC85 min
Jun 25, 12:08 AM CDTSevere Thunderstorm WarningBIS53 min
Jun 25, 12:47 AM CDTTornado WarningBIS28 min
Jun 25, 12:51 AM CDTAreal Flood AdvisoryBIS6 hr
Jun 25, 1:15 AM CDTTornado WarningBIS45 min
Jun 25, 1:36 AM CDTAreal Flood AdvisoryBIS3 hr
Jun 25, 1:58 AM CDTTornado WarningBIS47 min
Jun 25, 2:45 AM CDTMesoscale DiscussionSPC90 min
Jun 25, 7:03 PM CDTSevere Thunderstorm WarningBIS57 min
Jun 26, 5:42 AM CDTSevere Thunderstorm WarningBIS48 min
Jun 26, 2:26 PM CDTMesoscale DiscussionSPC64 min
Jun 26, 3:02 PM CDTSevere Thunderstorm WatchSPC7 hr
Jun 26, 5:52 PM CDTMesoscale DiscussionSPC113 min
Jun 30, 8:35 PM CDTSevere Thunderstorm WatchSPC5 hr
Jun 30, 11:34 PM CDTMesoscale DiscussionSPC116 min
Jul 1, 12:11 AM CDTSevere Thunderstorm WarningBIS64 min
Jul 1, 12:28 AM CDTSevere Thunderstorm WarningBIS62 min
Jul 1, 12:35 AM CDTAreal Flood AdvisoryBIS4 hr
Jul 1, 1:06 AM CDTSevere Thunderstorm WarningBIS54 min
Jul 3, 1:43 AM CDTMesoscale DiscussionSPC3 hr
Jul 5, 2:44 PM CDTSevere Thunderstorm WarningBIS61 min
Jul 5, 2:51 PM CDTMesoscale DiscussionSPC54 min
Jul 10, 4:00 PM CDTSevere Thunderstorm WarningBIS45 min
Jul 10, 10:43 PM CDTSevere Thunderstorm WarningBIS47 min
Jul 12, 8:14 PM CDTMesoscale DiscussionSPC61 min
Jul 12, 8:38 PM CDTSevere Thunderstorm WatchSPC6 hr
Jul 12, 11:13 PM CDTMesoscale DiscussionSPC62 min
Jul 13, 2:26 AM CDTMesoscale DiscussionSPC94 min
Jul 13, 10:36 PM CDTMesoscale DiscussionSPC24 min
Jul 13, 10:58 PM CDTSevere Thunderstorm WatchSPC7 hr
Jul 14, 3:00 AM CDTMesoscale DiscussionSPC90 min
Jul 20, 2:12 PM CDTMesoscale DiscussionSPC63 min
Jul 20, 2:45 PM CDTSevere Thunderstorm WatchSPC6 hr
Jul 20, 5:15 PM CDTSevere Thunderstorm WarningBIS60 min
Jul 20, 5:28 PM CDTSevere Thunderstorm WarningBIS62 min
Jul 20, 6:11 PM CDTSevere Thunderstorm WarningBIS22 min
Jul 20, 7:02 PM CDTMesoscale DiscussionSPC88 min
Jul 26, 4:56 PM CDTMesoscale DiscussionSPC94 min
Jul 26, 5:15 PM CDTSevere Thunderstorm WatchSPC10 hr
Jul 26, 7:09 PM CDTTornado WatchSPC6 hr
Jul 26, 7:21 PM CDTSevere Thunderstorm WarningBIS54 min
Jul 26, 7:32 PM CDTTornado WarningBIS43 min
Jul 26, 7:43 PM CDTSevere Thunderstorm WarningBIS62 min
Jul 26, 8:40 PM CDTSevere Thunderstorm WarningBIS50 min
Jul 26, 8:53 PM CDTSevere Thunderstorm WarningBIS22 min
Jul 26, 9:07 PM CDTSevere Thunderstorm WarningBIS53 min
Jul 26, 9:27 PM CDTAreal Flood AdvisoryBIS3 hr
Jul 26, 9:42 PM CDTTornado WarningBIS33 min
Jul 26, 9:49 PM CDTSevere Thunderstorm WarningBIS26 min
Jul 26, 9:53 PM CDTSevere Thunderstorm WarningBIS51 min
Jul 26, 10:52 PM CDTSevere Thunderstorm WarningBIS12 min
Jul 27, 1:24 AM CDTSevere Thunderstorm WatchSPC8 hr
Jul 29, 4:38 PM CDTSevere Thunderstorm WatchSPC10 hr
Jul 29, 6:49 PM CDTMesoscale DiscussionSPC86 min
Jul 29, 9:30 PM CDTSevere Thunderstorm WarningBIS45 min
Jul 29, 9:31 PM CDTMesoscale DiscussionSPC59 min
Jul 29, 10:14 PM CDTSevere Thunderstorm WarningBIS46 min
Jul 29, 10:55 PM CDTSevere Thunderstorm WarningBIS65 min
Jul 29, 11:39 PM CDTSevere Thunderstorm WarningBIS33 min
Jul 29, 11:46 PM CDTMesoscale DiscussionSPC59 min
Jul 30, 3:51 PM CDTMesoscale DiscussionSPC54 min
Jul 30, 6:02 PM CDTSevere Thunderstorm WarningBIS28 min
Jul 31, 1:01 PM CDTMesoscale DiscussionSPC89 min
Jul 31, 5:38 PM CDTMesoscale DiscussionSPC97 min
Jul 31, 9:15 PM CDTMesoscale DiscussionSPC2 hr
Aug 1, 12:58 AM CDTAreal Flood AdvisoryBIS3 hr
Aug 1, 3:39 PM CDTSevere Thunderstorm WatchSPC7 hr
Aug 1, 5:29 PM CDTSevere Thunderstorm WarningBIS61 min
Aug 1, 5:54 PM CDTTornado WarningBIS51 min
Aug 1, 6:37 PM CDTMesoscale DiscussionSPC113 min
Aug 1, 9:43 PM CDTMesoscale DiscussionSPC62 min
Aug 2, 1:05 PM CDTSevere Thunderstorm WarningBIS55 min
Aug 2, 1:21 PM CDTMesoscale DiscussionSPC84 min
Aug 7, 2:22 AM CDTMesoscale DiscussionSPC113 min
Aug 9, 3:57 PM CDTMesoscale DiscussionSPC63 min
Aug 9, 5:14 PM CDTSevere Thunderstorm WarningBIS61 min
Aug 9, 5:16 PM CDTSevere Thunderstorm WatchSPC8 hr
Aug 9, 7:23 PM CDTMesoscale DiscussionSPC67 min
Aug 9, 8:44 PM CDTSevere Thunderstorm WarningBIS61 min
Aug 9, 11:43 PM CDTMesoscale DiscussionSPC62 min
Aug 10, 2:32 PM CDTSevere Thunderstorm WarningBIS42 min
Aug 11, 3:59 PM CDTMesoscale DiscussionSPC2 hr
Aug 11, 5:50 PM CDTSevere Thunderstorm WatchSPC7 hr
Aug 11, 8:32 PM CDTMesoscale DiscussionSPC58 min
Aug 11, 11:18 PM CDTSevere Thunderstorm WarningBIS32 min
Aug 11, 11:28 PM CDTAreal Flood AdvisoryBIS6 hr
Aug 11, 11:41 PM CDTSevere Thunderstorm WarningBIS64 min
Aug 11, 11:42 PM CDTMesoscale DiscussionSPC63 min
Aug 12, 12:39 AM CDTSevere Thunderstorm WarningBIS66 min
Aug 12, 12:42 AM CDTSevere Thunderstorm WatchSPC5 hr
Aug 12, 1:16 AM CDTSevere Thunderstorm WarningBIS59 min
Aug 13, 12:31 AM CDTSevere Thunderstorm WarningBIS59 min
Aug 13, 1:08 AM CDTMesoscale DiscussionSPC67 min
Aug 13, 1:17 AM CDTAreal Flood AdvisoryBIS6 hr
Aug 30, 1:19 PM CDTMesoscale DiscussionSPC56 min
Sep 9, 3:35 PM CDTSevere Thunderstorm WatchSPC8 hr
Sep 9, 7:33 PM CDTSevere Thunderstorm WarningBIS57 min
Sep 9, 8:16 PM CDTMesoscale DiscussionSPC89 min
Sep 9, 8:31 PM CDTSevere Thunderstorm WarningBIS59 min
Sep 9, 10:45 PM CDTSevere Thunderstorm WarningBIS45 min
Dec 10, 1:30 PM CSTMesoscale DiscussionSPC5 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 archive20092011

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.