Alert archive / North Dakota / Grant County

Weather alerts in Grant County, North Dakota, 2010

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

Alerts: 206
Warnings: 61
Watches: 44
Advisories: 65
Busiest month: July38 alerts
Busiest day: July 14, 201021 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 9 tornado warnings covering Grant County in 2010 had a tornado report inside them.

Grant County, 2010

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	9	0	100%	0
Severe thunderstorm warnings	29	18	38%	15	13%	7 min
Flash flood warnings	3	0	100%	0

Each office's whole area, 2010

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Bismarck, ND: tornado warnings	93	10	89%	30	63%	9 min
NWS Bismarck, ND: severe thunderstorm warnings	430	186	57%	406	74%	25 min
NWS Bismarck, ND: flash flood warnings	29	8	72%	23	57%	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, Mountain Time. Each opens its own page with the text, the map, the radar and the sounding.

Issued	Product	Office	Lasted
Jan 1, 3:10 PM MST	Wind Chill Advisory	BIS	20 hr
Jan 4, 4:36 AM MST	Winter Storm Watch	BIS	10 hr
Jan 4, 2:46 PM MST	Winter Weather Advisory	BIS	53 hr
Jan 6, 3:46 AM MST	Wind Chill Warning	BIS	55 hr
Jan 6, 9:23 AM MST	Winter Storm Warning	BIS	18 hr
Jan 8, 2:36 PM MST	Wind Chill Advisory	BIS	20 hr
Jan 11, 3:19 AM MST	Freezing Fog Advisory	BIS	8 hr
Jan 17, 10:47 PM MST	Freezing Fog Advisory	BIS	13 hr
Jan 18, 7:33 PM MST	Freezing Fog Advisory	BIS	15 hr
Jan 19, 7:21 PM MST	Dense Fog Advisory	BIS	20 hr
Jan 20, 2:54 AM MST	Winter Weather Advisory	BIS	17 hr
Jan 20, 3:27 PM MST	Winter Storm Watch	BIS	25 hr
Jan 20, 8:14 PM MST	Dense Fog Advisory	BIS	18 hr
Jan 21, 4:20 PM MST	Winter Storm Warning	BIS	3 days
Jan 22, 3:26 AM MST	Winter Weather Advisory	BIS	8 hr
Jan 24, 9:51 AM MST	Blizzard Warning	BIS	34 hr
Jan 24, 3:01 PM MST	Winter Weather Advisory	BIS	18 hr
Jan 25, 3:14 PM MST	Winter Weather Advisory	BIS	12 hr
Feb 4, 4:14 AM MST	Winter Weather Advisory	BIS	56 hr
Feb 6, 2:59 PM MST	Winter Weather Advisory	BIS	53 hr
Feb 12, 2:41 PM MST	Winter Weather Advisory	BIS	50 hr
Feb 26, 9:51 PM MST	Dense Fog Advisory	BIS	11 hr
Feb 27, 9:11 AM MST	Dense Fog Advisory	BIS	109 min
Feb 27, 7:11 PM MST	Dense Fog Advisory	BIS	16 hr
Mar 1, 2:39 PM MST	Dense Fog Advisory	BIS	68 hr
Mar 4, 6:15 PM MST	Dense Fog Advisory	BIS	17 hr
Mar 5, 2:59 AM MST	Freezing Rain Advisory	BIS	41 hr
Mar 5, 10:54 AM MST	Dense Fog Advisory	BIS	28 hr
Mar 6, 11:44 PM MST	Dense Fog Advisory	BIS	10 hr
Mar 7, 8:20 PM MST	Dense Fog Advisory	BIS	48 hr
Mar 9, 3:49 AM MST	Winter Storm Watch	BIS	10 hr
Mar 9, 1:47 PM MST	Winter Weather Advisory	BIS	45 hr
Mar 13, 1:15 AM MST	Dense Fog Advisory	BIS	10 hr
Mar 13, 2:29 PM MST	Dense Fog Advisory	BIS	21 hr
Mar 14, 2:41 PM MDT	Flood Watch	BIS	5 days
Mar 16, 9:04 PM MDT	Dense Fog Advisory	BIS	13 hr
Mar 19, 2:55 PM MDT	Flood Watch	BIS	9 days
Mar 31, 3:13 PM MDT	Winter Storm Watch	BIS	24 hr
Apr 1, 2:43 PM MDT	Winter Weather Advisory	BIS	33 hr
Apr 2, 8:47 AM MDT	Winter Storm Warning	BIS	9 hr
Apr 7, 2:47 PM MDT	Fire Weather Watch	BIS	23 hr
Apr 8, 2:00 PM MDT	Red Flag Warning	BIS	30 hr
Apr 9, 2:35 AM MDT	Wind Advisory	BIS	15 hr
Apr 12, 2:22 PM MDT	Wind Advisory	BIS	30 hr
Apr 13, 11:19 AM MDT	Mesoscale Discussion	SPC	86 min
Apr 13, 11:48 AM MDT	Severe Thunderstorm Watch	SPC	6 hr
Apr 13, 12:39 PM MDT	Mesoscale Discussion	SPC	2 hr
Apr 13, 2:44 PM MDT	Mesoscale Discussion	SPC	91 min
Apr 13, 3:02 PM MDT	Severe Thunderstorm Warning	BIS	28 min
Apr 16, 3:25 AM MDT	Fire Weather Watch	BIS	24 hr
Apr 17, 3:35 AM MDT	Red Flag Warning	BIS	16 hr
Apr 27, 2:37 PM MDT	Wind Advisory	BIS	29 hr
Apr 28, 4:09 PM MDT	Severe Thunderstorm Warning	BIS	51 min
Apr 30, 3:36 AM MDT	Wind Advisory	BIS	38 hr
May 3, 3:43 AM MDT	High Wind Watch	BIS	22 hr
May 3, 2:30 PM MDT	Red Flag Warning	BIS	30 hr
May 3, 3:28 PM MDT	High Wind Warning	BIS	42 hr
May 3, 3:28 PM MDT	Wind Advisory	BIS	45 hr
May 5, 3:42 AM MDT	Winter Storm Watch	BIS	12 hr
May 5, 3:45 PM MDT	Winter Storm Warning	BIS	42 hr
May 5, 3:45 PM MDT	Winter Weather Advisory	BIS	47 hr
May 7, 3:54 AM MDT	Freeze Watch	BIS	11 hr
May 7, 2:39 PM MDT	Freeze Warning	BIS	17 hr
May 8, 3:22 PM MDT	Frost Advisory	BIS	15 hr
May 13, 8:04 PM MDT	Frost Advisory	BIS	12 hr
May 22, 12:51 PM MDT	Mesoscale Discussion	SPC	84 min
May 24, 12:37 AM MDT	Mesoscale Discussion	SPC	83 min
May 24, 1:00 AM MDT	Severe Thunderstorm Watch	SPC	7 hr
May 24, 1:47 AM MDT	High Wind Watch	BIS	23 hr
May 24, 5:06 AM MDT	Mesoscale Discussion	SPC	114 min
May 24, 1:03 PM MDT	Tornado Watch	SPC	8 hr
May 24, 5:07 PM MDT	Severe Thunderstorm Warning	BIS	53 min
May 24, 5:33 PM MDT	Severe Thunderstorm Warning	BIS	57 min
May 24, 6:21 PM MDT	Mesoscale Discussion	SPC	114 min
May 25, 12:37 AM MDT	High Wind Warning	BIS	17 hr
May 27, 3:33 AM MDT	Wind Advisory	BIS	14 hr
May 28, 5:11 PM MDT	Mesoscale Discussion	SPC	94 min
Jun 3, 2:14 PM MDT	Mesoscale Discussion	SPC	2 hr
Jun 3, 4:15 PM MDT	Severe Thunderstorm Warning	BIS	45 min
Jun 16, 3:55 AM MDT	High Wind Watch	BIS	24 hr
Jun 16, 3:01 PM MDT	High Wind Warning	BIS	51 hr
Jun 16, 6:20 PM MDT	Tornado Watch	SPC	8 hr
Jun 17, 1:05 AM MDT	Mesoscale Discussion	SPC	55 min
Jun 17, 1:54 AM MDT	Flash Flood Warning	BIS	6 hr
Jun 17, 3:56 AM MDT	Severe Thunderstorm Warning	BIS	34 min
Jun 17, 4:05 AM MDT	Severe Thunderstorm Warning	BIS	40 min
Jun 17, 11:21 AM MDT	Tornado Watch	SPC	9 hr
Jun 17, 11:30 AM MDT	Severe Thunderstorm Warning	BIS	60 min
Jun 20, 6:43 PM MDT	Severe Thunderstorm Watch	SPC	6 hr
Jun 21, 12:36 AM MDT	Mesoscale Discussion	SPC	24 min
Jun 21, 1:22 AM MDT	Flash Flood Watch	BIS	26 hr
Jun 21, 8:54 PM MDT	Severe Thunderstorm Watch	SPC	7 hr
Jun 21, 10:26 PM MDT	Areal Flood Advisory	BIS	3 hr
Jun 21, 11:05 PM MDT	Severe Thunderstorm Warning	BIS	55 min
Jun 21, 11:50 PM MDT	Severe Thunderstorm Warning	BIS	55 min
Jun 22, 12:44 AM MDT	Severe Thunderstorm Warning	BIS	61 min
Jun 25, 1:45 AM MDT	Mesoscale Discussion	SPC	90 min
Jun 25, 12:57 PM MDT	Mesoscale Discussion	SPC	2 hr
Jun 25, 2:14 PM MDT	Severe Thunderstorm Watch	SPC	8 hr
Jun 25, 5:24 PM MDT	Severe Thunderstorm Warning	BIS	66 min
Jun 25, 5:59 PM MDT	Severe Thunderstorm Warning	BIS	61 min
Jun 25, 7:27 PM MDT	Flash Flood Watch	BIS	25 hr
Jun 25, 8:02 PM MDT	Mesoscale Discussion	SPC	118 min
Jun 26, 1:56 PM MDT	Severe Thunderstorm Watch	SPC	7 hr
Jun 26, 3:00 PM MDT	Severe Thunderstorm Warning	BIS	46 min
Jun 26, 4:52 PM MDT	Mesoscale Discussion	SPC	113 min
Jun 26, 4:59 PM MDT	Areal Flood Advisory	BIS	4 hr
Jun 30, 10:34 PM MDT	Mesoscale Discussion	SPC	116 min
Jul 1, 2:18 PM MDT	Heat Advisory	BIS	28 hr
Jul 12, 7:38 PM MDT	Severe Thunderstorm Watch	SPC	6 hr
Jul 12, 10:13 PM MDT	Mesoscale Discussion	SPC	62 min
Jul 13, 1:26 AM MDT	Mesoscale Discussion	SPC	94 min
Jul 13, 12:50 PM MDT	Tornado Watch	SPC	9 hr
Jul 13, 5:56 PM MDT	Severe Thunderstorm Warning	BIS	30 min
Jul 13, 9:36 PM MDT	Mesoscale Discussion	SPC	24 min
Jul 13, 9:42 PM MDT	Severe Thunderstorm Warning	BIS	63 min
Jul 13, 9:57 PM MDT	Tornado Warning	BIS	33 min
Jul 13, 9:58 PM MDT	Severe Thunderstorm Watch	SPC	7 hr
Jul 13, 10:29 PM MDT	Tornado Warning	BIS	31 min
Jul 13, 10:58 PM MDT	Severe Thunderstorm Warning	BIS	62 min
Jul 13, 10:59 PM MDT	Tornado Warning	BIS	46 min
Jul 13, 11:10 PM MDT	Tornado Warning	BIS	35 min
Jul 13, 11:25 PM MDT	Flash Flood Warning	BIS	4 hr
Jul 13, 11:36 PM MDT	Tornado Warning	BIS	39 min
Jul 13, 11:44 PM MDT	Severe Thunderstorm Warning	BIS	61 min
Jul 14, 12:08 AM MDT	Tornado Warning	BIS	52 min
Jul 14, 12:14 AM MDT	Tornado Warning	BIS	46 min
Jul 14, 12:25 AM MDT	Severe Thunderstorm Warning	BIS	50 min
Jul 14, 12:49 AM MDT	Flash Flood Warning	BIS	6 hr
Jul 14, 12:52 AM MDT	Tornado Warning	BIS	23 min
Jul 14, 1:00 AM MDT	Severe Thunderstorm Warning	BIS	45 min
Jul 14, 1:10 AM MDT	Tornado Warning	BIS	35 min
Jul 14, 1:42 AM MDT	Severe Thunderstorm Warning	BIS	63 min
Jul 14, 1:44 AM MDT	Severe Thunderstorm Warning	BIS	61 min
Jul 14, 2:00 AM MDT	Mesoscale Discussion	SPC	90 min
Jul 23, 11:21 AM MDT	Mesoscale Discussion	SPC	114 min
Jul 23, 12:16 PM MDT	Severe Thunderstorm Warning	BIS	59 min
Jul 26, 4:15 PM MDT	Severe Thunderstorm Watch	SPC	10 hr
Jul 27, 12:24 AM MDT	Severe Thunderstorm Watch	SPC	8 hr
Jul 29, 3:38 PM MDT	Severe Thunderstorm Watch	SPC	10 hr
Jul 29, 9:57 PM MDT	Severe Thunderstorm Warning	BIS	63 min
Jul 29, 10:46 PM MDT	Mesoscale Discussion	SPC	59 min
Jul 29, 10:47 PM MDT	Severe Thunderstorm Warning	BIS	28 min
Jul 31, 12:01 PM MDT	Mesoscale Discussion	SPC	89 min
Jul 31, 4:53 PM MDT	Mesoscale Discussion	SPC	2 hr
Jul 31, 9:29 PM MDT	Mesoscale Discussion	SPC	31 min
Aug 1, 2:39 PM MDT	Severe Thunderstorm Watch	SPC	7 hr
Aug 1, 8:43 PM MDT	Mesoscale Discussion	SPC	62 min
Aug 2, 3:48 AM MDT	Mesoscale Discussion	SPC	87 min
Aug 2, 12:21 PM MDT	Mesoscale Discussion	SPC	84 min
Aug 6, 5:21 PM MDT	Mesoscale Discussion	SPC	54 min
Aug 6, 5:52 PM MDT	Severe Thunderstorm Watch	SPC	7 hr
Aug 6, 8:23 PM MDT	Mesoscale Discussion	SPC	97 min
Aug 11, 9:14 PM MDT	Severe Thunderstorm Warning	BIS	61 min
Aug 12, 9:04 PM MDT	Severe Thunderstorm Warning	BIS	56 min
Aug 12, 9:17 PM MDT	Severe Thunderstorm Watch	SPC	7 hr
Aug 12, 9:53 PM MDT	Severe Thunderstorm Warning	BIS	52 min
Aug 12, 10:18 PM MDT	Severe Thunderstorm Warning	BIS	57 min
Aug 12, 11:54 PM MDT	High Wind Warning	BIS	3 hr
Aug 17, 1:18 PM MDT	Mesoscale Discussion	SPC	57 min
Aug 17, 2:52 PM MDT	Severe Thunderstorm Watch	SPC	7 hr
Aug 17, 4:13 PM MDT	Mesoscale Discussion	SPC	62 min
Aug 21, 3:47 AM MDT	Fire Weather Watch	BIS	10 hr
Aug 21, 1:51 PM MDT	Red Flag Warning	BIS	30 hr
Aug 25, 2:56 PM MDT	Fire Weather Watch	BIS	37 hr
Aug 26, 2:48 PM MDT	Red Flag Warning	BIS	29 hr
Aug 30, 12:19 PM MDT	Mesoscale Discussion	SPC	56 min
Aug 30, 2:35 PM MDT	Mesoscale Discussion	SPC	55 min
Sep 1, 2:15 PM MDT	Wind Advisory	BIS	28 hr
Sep 5, 2:06 PM MDT	Wind Advisory	BIS	36 hr
Sep 9, 2:35 PM MDT	Severe Thunderstorm Watch	SPC	8 hr
Sep 9, 3:57 PM MDT	Tornado Watch	SPC	6 hr
Sep 9, 7:16 PM MDT	Mesoscale Discussion	SPC	89 min
Sep 17, 7:58 PM MDT	Frost Advisory	BIS	12 hr
Oct 1, 3:17 AM MDT	Freeze Watch	BIS	11 hr
Oct 1, 2:29 PM MDT	Freeze Warning	BIS	18 hr
Oct 12, 2:07 PM MDT	Freeze Warning	BIS	19 hr
Oct 25, 10:37 AM MDT	High Wind Watch	BIS	5 hr
Oct 25, 10:37 AM MDT	Wind Advisory	BIS	5 hr
Oct 25, 3:22 PM MDT	High Wind Warning	BIS	51 hr
Oct 26, 3:35 AM MDT	Blizzard Warning	BIS	36 hr
Oct 27, 3:07 PM MDT	Winter Weather Advisory	BIS	6 hr
Nov 3, 3:09 AM MDT	Wind Advisory	BIS	15 hr
Nov 19, 1:44 AM MST	Winter Weather Advisory	BIS	56 hr
Nov 21, 1:38 PM MST	Winter Weather Advisory	BIS	30 hr
Nov 21, 7:59 PM MST	Mesoscale Discussion	SPC	6 hr
Nov 22, 2:01 AM MST	Winter Storm Watch	BIS	25 hr
Nov 23, 2:35 AM MST	Winter Weather Advisory	BIS	56 hr
Nov 24, 11:02 PM MST	Wind Chill Advisory	BIS	12 hr
Nov 28, 2:53 PM MST	Winter Weather Advisory	BIS	36 hr
Dec 2, 3:27 AM MST	Winter Weather Advisory	BIS	45 hr
Dec 5, 5:16 PM MST	Dense Fog Advisory	BIS	18 hr
Dec 7, 12:29 AM MST	Dense Fog Advisory	BIS	9 hr
Dec 9, 3:50 PM MST	Winter Weather Advisory	BIS	35 hr
Dec 10, 3:37 AM MST	Winter Weather Advisory	BIS	25 hr
Dec 11, 3:09 AM MST	Wind Chill Advisory	BIS	8 hr
Dec 12, 3:09 AM MST	Winter Weather Advisory	BIS	27 hr
Dec 14, 3:15 AM MST	Freezing Rain Advisory	BIS	26 hr
Dec 18, 2:49 PM MST	Winter Storm Watch	BIS	23 hr
Dec 19, 2:11 PM MST	Winter Weather Advisory	BIS	30 hr
Dec 23, 9:47 AM MST	Winter Weather Advisory	BIS	17 hr
Dec 27, 2:04 PM MST	Winter Storm Watch	BIS	44 hr
Dec 29, 9:53 AM MST	Winter Weather Advisory	BIS	35 hr
Dec 30, 3:54 AM MST	Winter Storm Watch	BIS	24 hr
Dec 30, 5:56 PM MST	Wind Chill Advisory	BIS	41 hr
Dec 31, 1:13 AM MST	Winter Weather Advisory	BIS	34 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	29
Tornado Warning	9
Severe Thunderstorm Watch	16
Tornado Watch	5
Mesoscale Discussion	36
Flooding
Flash Flood Warning	3
Flash Flood Watch	2
Flood Watch	2
Areal Flood Advisory	2
Winter
Blizzard Warning	2
Winter Storm Warning	4
Winter Storm Watch	9
Freezing Rain Advisory	2
Winter Weather Advisory	24
Heat
Heat Advisory	1
Cold
Freeze Warning	3
Wind Chill Warning	1
Freeze Watch	2
Frost Advisory	3
Wind Chill Advisory	5
Wind and dust
High Wind Warning	5
High Wind Watch	4
Wind Advisory	10
Fire
Red Flag Warning	5
Fire Weather Watch	4
Fog and smoke
Dense Fog Advisory	15
Freezing Fog Advisory	3

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2009 2011

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.