Alert archive / Minnesota / Clearwater County

Weather alerts in Clearwater County, Minnesota, 2016

98 weather alerts in 2016, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Clearwater County and its neighbors

Each county as a circle sized by its count in 2016. Tap one for its archive.

Alerts
98
Warnings
34
Watches
13
Advisories
30
Busiest month
July23 alerts
Busiest day
June 17, 20169 alerts

Over time

By month

Warning verification

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

Clearwater County, 2016

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings17170%4100%31 min
Flash flood warnings00

Each office's whole area, 2016

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Grand Forks, ND: tornado warnings321747%4661%13 min
NWS Grand Forks, ND: severe thunderstorm warnings21818515%50286%27 min
NWS Grand Forks, ND: flash flood warnings10910%22100%97 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 6, 9:05 PM CSTWinter Weather AdvisoryFGF15 hr
Jan 6, 10:08 PM CSTWinter Storm WarningFGF14 hr
Jan 7, 12:29 PM CSTWinter Weather AdvisoryFGF15 hr
Jan 8, 3:03 PM CSTWind Chill AdvisoryFGF45 hr
Jan 11, 2:28 PM CSTWind Chill AdvisoryFGF22 hr
Jan 14, 6:39 AM CSTWinter Weather AdvisoryFGF14 hr
Jan 15, 3:53 AM CSTWind Chill AdvisoryFGF38 hr
Jan 16, 10:05 AM CSTWind Chill WarningFGF26 hr
Jan 16, 10:05 AM CSTWind Chill AdvisoryFGF50 hr
Jan 20, 5:08 AM CSTFreezing Rain AdvisoryFGF7 hr
Jan 31, 3:43 AM CSTDense Fog AdvisoryFGF5 hr
Feb 5, 3:13 PM CSTWinter Storm WatchFGF23 hr
Feb 6, 2:37 PM CSTWinter Storm WarningFGF25 hr
Feb 6, 2:37 PM CSTWinter Weather AdvisoryFGF51 hr
Feb 11, 3:19 PM CSTWind Chill AdvisoryFGF21 hr
Feb 12, 3:54 PM CSTWind Chill AdvisoryFGF18 hr
Feb 19, 8:35 AM CSTDense Fog AdvisoryFGF3 hr
Feb 28, 3:08 PM CSTWinter Weather AdvisoryFGF12 hr
Mar 13, 9:59 PM CDTDense Fog AdvisoryFGF12 hr
Mar 14, 10:05 AM CDTDense Fog AdvisoryFGF115 min
May 2, 3:13 PM CDTFire Weather WatchFGF14 hr
May 3, 5:41 AM CDTRed Flag WarningFGF14 hr
May 5, 12:22 PM CDTRed Flag WarningFGF9 hr
May 6, 3:42 AM CDTRed Flag WarningFGF15 hr
May 6, 3:26 PM CDTFire Weather WatchFGF13 hr
May 7, 4:27 AM CDTRed Flag WarningFGF15 hr
May 9, 4:21 AM CDTRed Flag WarningFGF14 hr
May 13, 4:07 AM CDTFreeze WarningFGF29 hr
May 14, 4:01 AM CDTFreeze WarningFGF29 hr
May 25, 8:42 AM CDTSpecial Weather StatementFGF63 min
May 26, 1:05 AM CDTSevere Thunderstorm WarningFGF55 min
Jun 17, 7:20 AM CDTSevere Thunderstorm WatchSPC4 hr
Jun 17, 7:32 AM CDTMesoscale DiscussionSPC28 min
Jun 17, 8:15 AM CDTSevere Thunderstorm WarningFGF60 min
Jun 17, 8:55 AM CDTSevere Thunderstorm WarningFGF65 min
Jun 17, 8:59 AM CDTSevere Thunderstorm WarningFGF61 min
Jun 17, 9:05 AM CDTSevere Thunderstorm WarningFGF55 min
Jun 17, 9:46 AM CDTSevere Thunderstorm WarningFGF44 min
Jun 17, 9:51 AM CDTSevere Thunderstorm WarningFGF54 min
Jun 17, 9:56 AM CDTMesoscale DiscussionSPC34 min
Jun 18, 5:06 AM CDTDense Fog AdvisoryFGF4 hr
Jun 19, 3:24 PM CDTMesoscale DiscussionSPC2 hr
Jul 4, 1:34 PM CDTMesoscale DiscussionSPC2 hr
Jul 4, 3:00 PM CDTSevere Thunderstorm WatchSPC7 hr
Jul 4, 5:35 PM CDTMesoscale DiscussionSPC85 min
Jul 4, 8:29 PM CDTMesoscale DiscussionSPC91 min
Jul 7, 3:10 PM CDTMesoscale DiscussionSPC2 hr
Jul 7, 8:35 PM CDTSpecial Weather StatementFGF40 min
Jul 10, 10:16 PM CDTMesoscale DiscussionSPC89 min
Jul 11, 1:01 AM CDTMesoscale DiscussionSPC89 min
Jul 11, 1:45 AM CDTSevere Thunderstorm WarningFGF60 min
Jul 11, 1:51 AM CDTSevere Thunderstorm WatchSPC5 hr
Jul 11, 2:01 AM CDTSevere Thunderstorm WarningFGF59 min
Jul 18, 3:17 PM CDTExcessive Heat WatchFGF36 hr
Jul 19, 7:52 PM CDTSevere Thunderstorm WarningFGF40 min
Jul 19, 8:10 PM CDTMesoscale DiscussionSPC95 min
Jul 19, 8:43 PM CDTSevere Thunderstorm WarningFGF62 min
Jul 19, 9:34 PM CDTSevere Thunderstorm WarningFGF56 min
Jul 19, 9:59 PM CDTSevere Thunderstorm WarningFGF61 min
Jul 20, 3:05 AM CDTExcessive Heat WarningFGF18 hr
Jul 20, 3:05 AM CDTHeat AdvisoryFGF18 hr
Jul 20, 8:41 PM CDTSevere Thunderstorm WatchSPC6 hr
Jul 20, 11:16 PM CDTMesoscale DiscussionSPC59 min
Jul 21, 12:03 AM CDTSevere Thunderstorm WarningFGF57 min
Jul 21, 12:43 AM CDTSevere Thunderstorm WarningFGF62 min
Aug 3, 9:07 PM CDTMesoscale DiscussionSPC113 min
Aug 3, 10:29 PM CDTSevere Thunderstorm WarningFGF61 min
Aug 3, 10:59 PM CDTSevere Thunderstorm WatchSPC7 hr
Aug 3, 11:31 PM CDTSpecial Weather StatementFGF59 min
Aug 4, 12:47 AM CDTSpecial Weather StatementFGF43 min
Aug 10, 11:49 AM CDTFlash Flood WatchFGF16 hr
Aug 10, 8:00 PM CDTSevere Thunderstorm WatchSPC6 hr
Aug 10, 10:50 PM CDTMesoscale DiscussionSPC85 min
Aug 28, 5:15 PM CDTMesoscale DiscussionSPC90 min
Aug 28, 9:44 PM CDTMesoscale DiscussionSPC91 min
Aug 28, 11:31 PM CDTSevere Thunderstorm WarningFGF59 min
Aug 29, 4:36 AM CDTAreal Flood AdvisoryFGF3 hr
Sep 13, 3:48 AM CDTFrost AdvisoryFGF28 hr
Oct 6, 3:00 PM CDTFrost AdvisoryFGF19 hr
Oct 7, 3:00 PM CDTFreeze WarningFGF19 hr
Oct 8, 2:48 PM CDTFrost AdvisoryFGF17 hr
Nov 16, 4:01 AM CSTWinter Storm WatchFGF33 hr
Nov 17, 1:04 PM CSTWinter Storm WarningFGF29 hr
Nov 17, 1:04 PM CSTWinter Weather AdvisoryFGF29 hr
Nov 21, 3:29 PM CSTWinter Weather AdvisoryFGF28 hr
Nov 26, 3:15 PM CSTDense Fog AdvisoryFGF27 hr
Dec 5, 3:58 AM CSTWinter Storm WarningFGF39 hr
Dec 5, 3:58 AM CSTWinter Weather AdvisoryFGF65 hr
Dec 5, 4:55 PM CSTMesoscale DiscussionSPC6 hr
Dec 12, 3:28 PM CSTWind Chill AdvisoryFGF19 hr
Dec 13, 2:54 PM CSTWind Chill AdvisoryFGF45 hr
Dec 16, 4:15 AM CSTWind Chill WarningFGF56 hr
Dec 18, 12:00 PM CSTWind Chill AdvisoryFGF3 hr
Dec 22, 3:45 PM CSTWinter Storm WatchFGF3 days
Dec 24, 4:16 AM CSTWinter Storm WarningFGF56 hr
Dec 24, 2:13 PM CSTIce Storm WarningFGF34 hr
Dec 25, 5:13 PM CSTMesoscale DiscussionSPC6 hr
Dec 26, 12:21 AM CSTWinter Weather AdvisoryFGF19 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 archive20152017

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.