Alert archive / Minnesota / Roseau County

Weather alerts in Roseau County, Minnesota, 2018

94 weather alerts in 2018, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Roseau County and its neighbors

Each county as a circle sized by its count in 2018. Tap one for its archive.

Alerts
94
Warnings
16
Watches
11
Advisories
42
Busiest month
January17 alerts
Busiest day
May 24, 20185 alerts

Over time

By month

Warning verification

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

Roseau County, 2018

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings660%367%43 min
Flash flood warnings00

Each office's whole area, 2018

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Grand Forks, ND: tornado warnings261638%3669%16 min
NWS Grand Forks, ND: severe thunderstorm warnings18816811%53384%26 min
NWS Grand Forks, ND: flash flood warnings220%6100%90 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 1, 11:58 AM CSTWind Chill AdvisoryFGF22 hr
Jan 2, 2:56 PM CSTWind Chill AdvisoryFGF20 hr
Jan 3, 2:58 PM CSTWind Chill AdvisoryFGF9 hr
Jan 4, 2:46 PM CSTWind Chill AdvisoryFGF20 hr
Jan 5, 2:44 PM CSTWind Chill AdvisoryFGF19 hr
Jan 9, 4:13 AM CSTWinter Storm WatchFGF24 hr
Jan 10, 4:05 AM CSTWinter Weather AdvisoryFGF36 hr
Jan 11, 8:48 AM CSTWind Chill AdvisoryFGF27 hr
Jan 12, 11:57 AM CSTWind Chill AdvisoryFGF3 hr
Jan 12, 3:08 PM CSTWind Chill WarningFGF20 hr
Jan 12, 3:08 PM CSTWind Chill AdvisoryFGF20 hr
Jan 14, 4:08 AM CSTWind Chill AdvisoryFGF15 hr
Jan 14, 3:09 PM CSTWind Chill WarningFGF4 hr
Jan 14, 6:54 PM CSTWind Chill WarningFGF40 hr
Jan 14, 6:54 PM CSTWind Chill AdvisoryFGF40 hr
Jan 30, 3:26 AM CSTWind AdvisoryFGF15 hr
Jan 31, 2:37 PM CSTWind Chill AdvisoryFGF24 hr
Feb 1, 3:47 PM CSTWind Chill AdvisoryFGF15 hr
Feb 3, 3:02 AM CSTWind Chill AdvisoryFGF33 hr
Feb 4, 2:41 PM CSTWind Chill AdvisoryFGF16 hr
Feb 5, 3:09 AM CSTWind Chill AdvisoryFGF31 hr
Feb 6, 3:26 PM CSTWind Chill AdvisoryFGF19 hr
Feb 7, 2:49 PM CSTWind Chill AdvisoryFGF19 hr
Feb 8, 2:32 PM CSTWind Chill AdvisoryFGF21 hr
Feb 9, 2:50 PM CSTWind Chill AdvisoryFGF19 hr
Feb 11, 3:20 PM CSTWind Chill AdvisoryFGF20 hr
Feb 15, 2:25 PM CSTWind Chill AdvisoryFGF18 hr
Feb 17, 3:07 PM CSTWinter Storm WatchFGF6 hr
Feb 17, 3:07 PM CSTWinter Weather AdvisoryFGF25 hr
Feb 23, 3:01 PM CSTWinter Weather AdvisoryFGF40 hr
Mar 3, 4:05 AM CSTWinter Storm WatchFGF35 hr
Mar 4, 2:58 PM CSTWinter Weather AdvisoryFGF32 hr
Mar 25, 10:19 AM CDTWinter Weather AdvisoryFGF12 hr
Mar 25, 4:25 PM CDTWinter Storm WarningFGF6 hr
Mar 30, 4:36 AM CDTWinter Weather AdvisoryFGF23 hr
Apr 21, 3:19 PM CDTFire Weather WatchFGF19 hr
Apr 22, 5:55 AM CDTRed Flag WarningFGF13 hr
Apr 29, 4:12 AM CDTFire Weather WatchFGF16 hr
May 4, 4:04 AM CDTRed Flag WarningFGF15 hr
May 14, 2:30 PM CDTFire Weather WatchFGF13 hr
May 15, 3:50 AM CDTRed Flag WarningFGF16 hr
May 24, 2:06 AM CDTSpecial Weather StatementFGF54 min
May 24, 2:46 AM CDTSpecial Weather StatementFGF59 min
May 24, 3:22 AM CDTSpecial Weather StatementFGF53 min
May 24, 12:07 PM CDTSpecial Weather StatementFGF8 min
May 24, 12:26 PM CDTSpecial Weather StatementFGF34 min
May 24, 9:50 PM CDTSpecial Weather StatementFGF55 min
Jun 12, 4:57 AM CDTDense Fog AdvisoryFGF4 hr
Jun 15, 12:35 AM CDTSpecial Weather StatementFGF40 min
Jun 15, 1:21 AM CDTSpecial Weather StatementFGF54 min
Jun 15, 1:33 AM CDTMesoscale DiscussionSPC87 min
Jun 15, 2:06 AM CDTSpecial Weather StatementFGF54 min
Jun 15, 2:07 AM CDTSpecial Weather StatementFGF53 min
Jun 28, 10:54 PM CDTSevere Thunderstorm WatchSPC9 hr
Jun 29, 2:02 AM CDTMesoscale DiscussionSPC118 min
Jun 29, 4:14 AM CDTMesoscale DiscussionSPC2 hr
Jun 29, 4:25 AM CDTSevere Thunderstorm WarningFGF65 min
Jul 1, 5:40 PM CDTMesoscale DiscussionSPC3 hr
Jul 4, 1:34 AM CDTSevere Thunderstorm WatchSPC7 hr
Jul 4, 4:16 AM CDTSevere Thunderstorm WarningFGF59 min
Jul 4, 5:15 AM CDTSpecial Weather StatementFGF60 min
Jul 4, 5:47 AM CDTSevere Thunderstorm WarningFGF43 min
Jul 8, 2:35 AM CDTMesoscale DiscussionSPC85 min
Jul 8, 3:14 AM CDTSevere Thunderstorm WatchSPC5 hr
Jul 8, 5:30 AM CDTMesoscale DiscussionSPC90 min
Jul 11, 4:54 AM CDTSpecial Weather StatementFGF66 min
Jul 11, 3:56 PM CDTMesoscale DiscussionSPC3 hr
Aug 4, 9:49 PM CDTSpecial Weather StatementFGF41 min
Aug 26, 9:48 PM CDTSevere Thunderstorm WatchSPC6 hr
Aug 26, 10:52 PM CDTSevere Thunderstorm WarningFGF53 min
Aug 26, 10:55 PM CDTMesoscale DiscussionSPC2 hr
Aug 26, 11:45 PM CDTSevere Thunderstorm WarningFGF37 min
Aug 31, 2:00 PM CDTMesoscale DiscussionSPC3 hr
Sep 5, 3:42 PM CDTFrost AdvisoryFGF15 hr
Sep 11, 5:09 PM CDTMesoscale DiscussionSPC3 hr
Sep 11, 7:36 PM CDTSpecial Weather StatementFGF54 min
Sep 12, 2:30 PM CDTSevere Thunderstorm WarningFGF60 min
Sep 12, 3:01 PM CDTSpecial Weather StatementFGF44 min
Sep 15, 2:35 PM CDTWind AdvisoryFGF26 hr
Sep 27, 2:38 PM CDTFrost AdvisoryFGF18 hr
Sep 28, 3:53 AM CDTFreeze WarningFGF29 hr
Oct 9, 3:11 PM CDTWinter Weather AdvisoryFGF37 hr
Oct 26, 9:37 PM CDTDense Fog AdvisoryFGF14 hr
Dec 6, 3:28 AM CSTWind Chill AdvisoryFGF6 hr
Dec 11, 11:56 PM CSTDense Fog AdvisoryFGF11 hr
Dec 19, 3:59 AM CSTWinter Weather AdvisoryFGF8 hr
Dec 22, 10:38 AM CSTWinter Weather AdvisoryFGF3 hr
Dec 25, 4:06 AM CSTWinter Storm WatchFGF11 hr
Dec 25, 3:11 PM CSTWinter Storm WarningFGF61 hr
Dec 27, 2:55 PM CSTWinter Weather AdvisoryFGF13 hr
Dec 28, 3:50 AM CSTWind Chill AdvisoryFGF8 hr
Dec 28, 2:43 PM CSTWind Chill AdvisoryFGF18 hr
Dec 30, 3:01 PM CSTWind Chill AdvisoryFGF23 hr
Dec 31, 2:24 PM CSTWind Chill WarningFGF19 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 archive20172019

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.