Alert archive / North Dakota / Grant County

Weather alerts in Grant County, North Dakota, 2019

139 weather alerts in 2019, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Grant County and its neighbors

Each county as a circle sized by its count in 2019. Tap one for its archive.

Alerts: 139
Warnings: 37
Watches: 23
Advisories: 43
Busiest month: July33 alerts
Busiest day: July 17, 20198 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 2 tornado warnings covering Grant County in 2019 had a tornado report inside them.

Grant County, 2019

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	2	0	100%	0
Severe thunderstorm warnings	23	13	43%	6	67%	35 min
Flash flood warnings	0			0

Each office's whole area, 2019

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Bismarck, ND: tornado warnings	15	5	67%	6	83%	3 min
NWS Bismarck, ND: severe thunderstorm warnings	241	156	35%	269	90%	18 min
NWS Bismarck, ND: flash flood warnings	7	4	43%	6	100%	146 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, Mountain Time. Each opens its own page with the text, the map, the radar and the sounding.

Issued	Product	Office	Lasted
Jan 5, 8:11 PM MST	Dense Fog Advisory	BIS	12 hr
Jan 7, 1:35 PM MST	Wind Advisory	BIS	27 hr
Jan 12, 5:59 PM MST	Dense Fog Advisory	BIS	14 hr
Jan 18, 12:59 AM MST	Winter Weather Advisory	BIS	16 hr
Jan 23, 3:00 AM MST	Winter Weather Advisory	BIS	21 hr
Jan 23, 2:27 PM MST	Wind Chill Advisory	BIS	45 hr
Jan 26, 2:51 AM MST	High Wind Watch	BIS	24 hr
Jan 27, 2:34 AM MST	High Wind Warning	BIS	24 hr
Jan 27, 2:41 AM MST	Winter Weather Advisory	BIS	14 hr
Jan 28, 2:45 AM MST	Wind Advisory	BIS	2 hr
Jan 28, 2:50 AM MST	Wind Chill Warning	BIS	3 days
Jan 28, 2:50 AM MST	Wind Chill Advisory	BIS	3 days
Feb 1, 1:48 PM MST	Winter Storm Watch	BIS	24 hr
Feb 2, 3:06 AM MST	Winter Weather Advisory	BIS	50 hr
Feb 4, 2:14 AM MST	Wind Chill Advisory	BIS	9 hr
Feb 4, 10:49 AM MST	Wind Chill Advisory	BIS	24 hr
Feb 6, 2:29 AM MST	Wind Chill Advisory	BIS	39 hr
Feb 6, 10:37 PM MST	Wind Chill Warning	BIS	36 hr
Feb 8, 2:57 AM MST	Wind Chill Advisory	BIS	56 hr
Feb 11, 1:54 PM MST	Wind Chill Advisory	BIS	21 hr
Feb 13, 1:16 PM MST	Wind Chill Advisory	BIS	46 hr
Feb 15, 1:32 PM MST	Winter Storm Watch	BIS	13 hr
Feb 16, 2:48 AM MST	Winter Storm Warning	BIS	35 hr
Feb 18, 12:49 PM MST	Wind Chill Advisory	BIS	20 hr
Feb 23, 2:55 AM MST	Winter Weather Advisory	BIS	38 hr
Feb 23, 2:38 PM MST	Wind Chill Advisory	BIS	44 hr
Feb 25, 2:46 PM MST	Winter Weather Advisory	BIS	23 hr
Feb 26, 1:20 PM MST	Wind Chill Advisory	BIS	21 hr
Mar 1, 8:07 PM MST	Wind Chill Warning	BIS	60 hr
Mar 3, 1:47 AM MST	Wind Chill Advisory	BIS	30 hr
Mar 4, 2:59 AM MST	Winter Weather Advisory	BIS	17 hr
Mar 7, 2:38 AM MST	Winter Storm Watch	BIS	24 hr
Mar 8, 2:46 AM MST	Winter Storm Warning	BIS	43 hr
Mar 12, 2:22 AM MDT	Winter Storm Watch	BIS	24 hr
Mar 12, 2:06 PM MDT	Blizzard Warning	BIS	49 hr
Mar 13, 2:19 AM MDT	Winter Weather Advisory	BIS	40 hr
Mar 13, 5:26 PM MDT	Mesoscale Discussion	SPC	6 hr
Mar 22, 3:55 AM MDT	Dense Fog Advisory	BIS	6 hr
Mar 22, 10:09 PM MDT	Areal Flood Advisory	BIS	58 hr
Mar 26, 4:38 AM MDT	Dense Fog Advisory	BIS	4 hr
Mar 26, 9:52 AM MDT	River Flood Warning	BIS	5 days
Mar 26, 5:56 PM MDT	Dense Fog Advisory	BIS	16 hr
Apr 5, 8:39 PM MDT	Dense Fog Advisory	BIS	36 hr
Apr 6, 8:10 PM MDT	Dense Fog Advisory	BIS	9 hr
Apr 10, 3:09 AM MDT	Winter Storm Watch	BIS	11 hr
Apr 10, 2:24 PM MDT	Winter Weather Advisory	BIS	46 hr
Apr 18, 2:01 AM MDT	Dense Fog Advisory	BIS	7 hr
Apr 24, 2:23 PM MDT	Fire Weather Watch	BIS	12 hr
Apr 25, 2:22 AM MDT	Red Flag Warning	BIS	17 hr
May 7, 5:19 AM MDT	Dense Fog Advisory	BIS	3 hr
May 9, 2:18 AM MDT	Fire Weather Watch	BIS	24 hr
May 15, 2:48 PM MDT	Severe Thunderstorm Watch	SPC	6 hr
May 15, 5:08 PM MDT	Mesoscale Discussion	SPC	2 hr
May 19, 2:40 AM MDT	Frost Advisory	BIS	29 hr
May 28, 4:58 AM MDT	Dense Fog Advisory	BIS	3 hr
Jun 3, 6:22 PM MDT	Severe Thunderstorm Warning	BIS	38 min
Jun 3, 9:56 PM MDT	Special Weather Statement	BIS	49 min
Jun 7, 6:24 PM MDT	Severe Thunderstorm Watch	SPC	6 hr
Jun 7, 7:03 PM MDT	Mesoscale Discussion	SPC	87 min
Jun 7, 9:34 PM MDT	Special Weather Statement	BIS	41 min
Jun 11, 12:14 PM MDT	Mesoscale Discussion	SPC	3 hr
Jun 14, 5:34 PM MDT	Severe Thunderstorm Warning	BIS	41 min
Jun 14, 6:20 PM MDT	Special Weather Statement	BIS	40 min
Jun 18, 5:16 PM MDT	Special Weather Statement	BIS	29 min
Jun 18, 5:48 PM MDT	Special Weather Statement	BIS	42 min
Jun 27, 1:02 AM MDT	Severe Thunderstorm Warning	BIS	43 min
Jun 27, 2:01 AM MDT	High Wind Warning	BIS	108 min
Jun 28, 5:59 AM MDT	Severe Thunderstorm Warning	BIS	61 min
Jun 29, 4:12 PM MDT	Mesoscale Discussion	SPC	93 min
Jun 29, 5:08 PM MDT	Tornado Watch	SPC	7 hr
Jun 29, 6:03 PM MDT	Severe Thunderstorm Warning	BIS	57 min
Jun 29, 6:30 PM MDT	Severe Thunderstorm Warning	BIS	60 min
Jun 29, 7:00 PM MDT	Mesoscale Discussion	SPC	90 min
Jun 29, 7:11 PM MDT	Tornado Warning	BIS	34 min
Jul 2, 2:11 PM MDT	Mesoscale Discussion	SPC	94 min
Jul 2, 2:38 PM MDT	Severe Thunderstorm Watch	SPC	10 hr
Jul 2, 4:37 PM MDT	Mesoscale Discussion	SPC	83 min
Jul 2, 4:43 PM MDT	Severe Thunderstorm Warning	BIS	62 min
Jul 2, 5:44 PM MDT	Severe Thunderstorm Warning	BIS	18 min
Jul 2, 6:33 PM MDT	Mesoscale Discussion	SPC	87 min
Jul 2, 7:41 PM MDT	Severe Thunderstorm Warning	BIS	44 min
Jul 2, 8:41 PM MDT	Severe Thunderstorm Warning	BIS	49 min
Jul 3, 3:40 PM MDT	Severe Thunderstorm Watch	SPC	8 hr
Jul 8, 12:09 PM MDT	Flash Flood Watch	BIS	17 hr
Jul 8, 12:27 PM MDT	Mesoscale Discussion	SPC	2 hr
Jul 8, 12:43 PM MDT	Severe Thunderstorm Watch	SPC	7 hr
Jul 8, 2:40 PM MDT	Mesoscale Discussion	SPC	65 min
Jul 8, 4:44 PM MDT	Severe Thunderstorm Warning	BIS	41 min
Jul 9, 1:16 AM MDT	Special Weather Statement	BIS	44 min
Jul 9, 2:01 AM MDT	Special Weather Statement	BIS	44 min
Jul 12, 8:18 PM MDT	Mesoscale Discussion	SPC	87 min
Jul 12, 9:10 PM MDT	Severe Thunderstorm Warning	BIS	65 min
Jul 12, 10:00 PM MDT	Tornado Warning	BIS	30 min
Jul 12, 10:11 PM MDT	Severe Thunderstorm Warning	BIS	26 min
Jul 15, 12:34 AM MDT	Severe Thunderstorm Warning	BIS	56 min
Jul 15, 1:27 AM MDT	Severe Thunderstorm Warning	BIS	63 min
Jul 16, 1:26 PM MDT	Mesoscale Discussion	SPC	94 min
Jul 16, 2:50 PM MDT	Severe Thunderstorm Watch	SPC	9 hr
Jul 16, 6:19 PM MDT	Severe Thunderstorm Warning	BIS	56 min
Jul 16, 6:37 PM MDT	Mesoscale Discussion	SPC	83 min
Jul 16, 7:00 PM MDT	Severe Thunderstorm Warning	BIS	45 min
Jul 16, 8:59 PM MDT	Severe Thunderstorm Warning	BIS	61 min
Jul 16, 9:08 PM MDT	Mesoscale Discussion	SPC	97 min
Jul 17, 3:56 PM MDT	Severe Thunderstorm Warning	BIS	49 min
Jul 17, 4:38 PM MDT	Severe Thunderstorm Watch	SPC	6 hr
Jul 17, 5:17 PM MDT	Severe Thunderstorm Warning	BIS	58 min
Jul 17, 6:46 PM MDT	Mesoscale Discussion	SPC	119 min
Aug 4, 10:02 PM MDT	Mesoscale Discussion	SPC	88 min
Aug 6, 1:27 PM MDT	Mesoscale Discussion	SPC	93 min
Aug 6, 1:53 PM MDT	Severe Thunderstorm Watch	SPC	8 hr
Aug 9, 6:33 AM MDT	Special Weather Statement	BIS	27 min
Aug 10, 1:35 PM MDT	Severe Thunderstorm Warning	BIS	55 min
Aug 10, 1:56 PM MDT	Mesoscale Discussion	SPC	94 min
Aug 10, 2:15 PM MDT	Severe Thunderstorm Warning	BIS	45 min
Aug 11, 4:19 PM MDT	Mesoscale Discussion	SPC	116 min
Aug 15, 10:45 AM MDT	Special Weather Statement	BIS	45 min
Aug 19, 5:06 PM MDT	Mesoscale Discussion	SPC	114 min
Aug 25, 1:50 PM MDT	Mesoscale Discussion	SPC	115 min
Aug 25, 2:18 PM MDT	Severe Thunderstorm Watch	SPC	9 hr
Aug 25, 4:58 PM MDT	Mesoscale Discussion	SPC	2 hr
Sep 20, 11:49 AM MDT	Mesoscale Discussion	SPC	116 min
Sep 20, 12:50 PM MDT	Severe Thunderstorm Watch	SPC	8 hr
Sep 20, 2:23 PM MDT	Severe Thunderstorm Warning	BIS	67 min
Sep 20, 6:15 PM MDT	Severe Thunderstorm Watch	SPC	8 hr
Sep 20, 11:30 PM MDT	Special Weather Statement	BIS	45 min
Sep 21, 12:11 AM MDT	Special Weather Statement	BIS	49 min
Oct 4, 12:55 PM MDT	Wind Advisory	BIS	28 hr
Oct 8, 3:23 AM MDT	Winter Storm Watch	BIS	59 hr
Oct 9, 2:17 AM MDT	Winter Storm Warning	BIS	4 days
Oct 9, 10:07 PM MDT	Mesoscale Discussion	SPC	6 hr
Oct 10, 2:30 PM MDT	Winter Weather Advisory	BIS	45 hr
Nov 27, 2:45 AM MST	Winter Storm Watch	BIS	35 hr
Nov 28, 1:44 PM MST	Winter Storm Warning	BIS	63 hr
Nov 28, 2:55 PM MST	Winter Weather Advisory	BIS	54 hr
Dec 7, 1:47 PM MST	Winter Weather Advisory	BIS	36 hr
Dec 9, 12:45 PM MST	Wind Chill Advisory	BIS	22 hr
Dec 20, 1:52 AM MST	Dense Fog Advisory	BIS	8 hr
Dec 24, 4:41 PM MST	Dense Fog Advisory	BIS	21 hr
Dec 27, 2:16 PM MST	Winter Weather Advisory	BIS	61 hr

By product

Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.

Product	Alerts
Severe storms
Severe Thunderstorm Warning	23
Tornado Warning	2
Severe Thunderstorm Watch	11
Tornado Watch	1
Mesoscale Discussion	25
Special Weather Statement	11
Flooding
River Flood Warning	1
Flash Flood Watch	1
Areal Flood Advisory	1
Winter
Blizzard Warning	1
Winter Storm Warning	4
Winter Storm Watch	7
Winter Weather Advisory	13
Cold
Wind Chill Warning	3
Frost Advisory	1
Wind Chill Advisory	13
Wind and dust
High Wind Warning	2
High Wind Watch	1
Wind Advisory	3
Fire
Red Flag Warning	1
Fire Weather Watch	2
Fog and smoke
Dense Fog Advisory	12

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2018 2020

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.