Alert archive / North Dakota / Eddy County

Weather alerts in Eddy County, North Dakota, 2018

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

Eddy County and its neighbors

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

Alerts
109
Warnings
28
Watches
10
Advisories
49
Busiest month
July22 alerts
Busiest day
June 29, 20187 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 1 tornado warnings covering Eddy County in 2018 had a tornado report inside them; 1 of 1 tornado reports fell inside a warning, on average 3 minutes after it went out.

Eddy County, 2018

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings110%1100%3 min
Severe thunderstorm warnings12118%21100%21 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 4, 2:46 PM CSTWind Chill AdvisoryFGF20 hr
Jan 9, 4:13 AM CSTWinter Storm WatchFGF24 hr
Jan 10, 4:05 AM CSTWinter Storm WarningFGF29 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 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 21, 2:32 PM CSTDense Fog AdvisoryFGF7 hr
Jan 24, 5:18 AM CSTDense Fog AdvisoryFGF4 hr
Jan 24, 9:29 PM CSTDense Fog AdvisoryFGF13 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 17, 3:07 PM CSTWinter Weather AdvisoryFGF25 hr
Feb 18, 5:40 AM CSTWinter Storm WarningFGF10 hr
Feb 20, 3:36 PM CSTWind Chill AdvisoryFGF17 hr
Mar 3, 4:05 AM CSTWinter Storm WatchFGF35 hr
Mar 4, 2:58 PM CSTWinter Storm WarningFGF32 hr
Mar 4, 3:47 PM CSTMesoscale DiscussionSPC3 hr
Mar 5, 11:24 PM CSTWinter Weather AdvisoryFGF4 hr
Mar 10, 9:33 AM CSTDense Fog AdvisoryFGF2 hr
Mar 21, 3:18 PM CDTWinter Storm WatchFGF24 hr
Mar 22, 4:15 AM CDTDense Fog AdvisoryFGF7 hr
Mar 22, 2:55 PM CDTWinter Storm WarningFGF27 hr
Mar 22, 2:55 PM CDTWinter Weather AdvisoryFGF44 hr
Mar 29, 3:54 AM CDTWinter Storm WatchFGF25 hr
Mar 29, 3:53 PM CDTWinter Weather AdvisoryFGF15 hr
Mar 30, 4:36 AM CDTWinter Storm WarningFGF26 hr
Apr 29, 4:06 AM CDTWind AdvisoryFGF16 hr
May 4, 4:04 AM CDTRed Flag WarningFGF15 hr
May 9, 3:48 AM CDTDense Fog AdvisoryFGF6 hr
May 31, 3:17 AM CDTDense Fog AdvisoryFGF7 hr
Jun 1, 9:43 PM CDTSevere Thunderstorm WarningFGF32 min
Jun 2, 3:39 AM CDTWind AdvisoryFGF17 hr
Jun 5, 6:01 PM CDTMesoscale DiscussionSPC2 hr
Jun 5, 9:07 PM CDTSevere Thunderstorm WatchSPC6 hr
Jun 9, 2:42 AM CDTDense Fog AdvisoryFGF7 hr
Jun 28, 1:06 PM CDTMesoscale DiscussionSPC114 min
Jun 28, 3:16 PM CDTTornado WatchSPC8 hr
Jun 28, 9:06 PM CDTMesoscale DiscussionSPC84 min
Jun 28, 10:21 PM CDTMesoscale DiscussionSPC84 min
Jun 28, 10:54 PM CDTSevere Thunderstorm WatchSPC9 hr
Jun 29, 2:02 AM CDTMesoscale DiscussionSPC118 min
Jun 29, 2:08 AM CDTSevere Thunderstorm WarningFGF67 min
Jun 29, 3:15 AM CDTSevere Thunderstorm WarningFGF60 min
Jun 29, 5:05 AM CDTHigh Wind WarningFGF4 hr
Jul 1, 5:40 PM CDTMesoscale DiscussionSPC3 hr
Jul 1, 7:35 PM CDTSevere Thunderstorm WarningFGF40 min
Jul 1, 9:03 PM CDTSpecial Weather StatementFGF27 min
Jul 4, 12:49 AM CDTMesoscale DiscussionSPC116 min
Jul 4, 1:34 AM CDTSevere Thunderstorm WatchSPC7 hr
Jul 4, 2:00 AM CDTSevere Thunderstorm WarningFGF45 min
Jul 4, 2:26 AM CDTTornado WarningFGF49 min
Jul 4, 2:33 AM CDTSevere Thunderstorm WarningFGF57 min
Jul 6, 3:05 PM CDTHeat AdvisoryFGF29 hr
Jul 7, 11:44 PM CDTMesoscale DiscussionSPC2 hr
Jul 8, 2:35 AM CDTMesoscale DiscussionSPC85 min
Jul 8, 3:14 AM CDTSevere Thunderstorm WatchSPC5 hr
Jul 8, 3:18 AM CDTSevere Thunderstorm WarningFGF57 min
Jul 8, 4:13 AM CDTSevere Thunderstorm WarningFGF62 min
Jul 14, 5:48 PM CDTMesoscale DiscussionSPC87 min
Jul 14, 8:50 PM CDTSpecial Weather StatementFGF25 min
Jul 19, 3:43 PM CDTMesoscale DiscussionSPC2 hr
Jul 19, 5:14 PM CDTSpecial Weather StatementFGF61 min
Jul 19, 5:57 PM CDTSevere Thunderstorm WarningFGF24 min
Jul 19, 6:50 PM CDTSpecial Weather StatementFGF25 min
Jul 22, 1:55 PM CDTMesoscale DiscussionSPC3 hr
Jul 22, 4:01 PM CDTSpecial Weather StatementFGF59 min
Aug 4, 3:42 PM CDTMesoscale DiscussionSPC93 min
Aug 4, 5:58 PM CDTSpecial Weather StatementFGF17 min
Aug 4, 6:17 PM CDTSpecial Weather StatementFGF28 min
Aug 4, 7:21 PM CDTSevere Thunderstorm WarningFGF54 min
Aug 26, 8:46 PM CDTSevere Thunderstorm WarningFGF29 min
Aug 26, 9:15 PM CDTSevere Thunderstorm WarningFGF45 min
Sep 9, 5:23 PM CDTMesoscale DiscussionSPC2 hr
Sep 27, 3:32 AM CDTFreeze WatchFGF11 hr
Sep 27, 2:38 PM CDTFreeze WarningFGF18 hr
Sep 28, 3:53 AM CDTFreeze WarningFGF29 hr
Oct 4, 3:44 AM CDTWinter Weather AdvisoryFGF38 hr
Oct 9, 3:11 PM CDTWinter Weather AdvisoryFGF37 hr
Oct 25, 9:55 PM CDTDense Fog AdvisoryFGF12 hr
Oct 26, 9:37 PM CDTDense Fog AdvisoryFGF14 hr
Nov 22, 3:40 PM CSTDense Fog AdvisoryFGF18 hr
Nov 27, 3:08 PM CSTWinter Weather AdvisoryFGF33 hr
Nov 29, 8:19 PM CSTDense Fog AdvisoryFGF14 hr
Nov 30, 6:52 PM CSTDense Fog AdvisoryFGF20 hr
Dec 11, 11:56 PM CSTDense Fog AdvisoryFGF11 hr
Dec 12, 9:38 PM CSTWinter Weather AdvisoryFGF11 hr
Dec 19, 3:59 AM CSTWinter Weather AdvisoryFGF8 hr
Dec 20, 10:21 PM CSTDense Fog AdvisoryFGF13 hr
Dec 25, 4:06 AM CSTWinter Weather AdvisoryFGF23 hr
Dec 25, 3:11 PM CSTWinter Storm WarningFGF61 hr
Dec 27, 4:00 AM CSTBlizzard WarningFGF26 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.