Alert archive / North Dakota / Grant County

Weather alerts in Grant County, North Dakota, 2013

151 weather alerts in 2013, 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 2013. Tap one for its archive.

Alerts: 151
Warnings: 50
Watches: 30
Advisories: 47
Busiest month: May30 alerts
Busiest day: June 21, 20137 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 3 tornado warnings covering Grant County in 2013 had a tornado report inside them.

Grant County, 2013

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	3	0	100%	0
Severe thunderstorm warnings	30	16	47%	5	100%	24 min
Flash flood warnings	1	1	0%	0

Each office's whole area, 2013

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Bismarck, ND: tornado warnings	16	4	75%	10	50%	8 min
NWS Bismarck, ND: severe thunderstorm warnings	239	139	42%	276	90%	24 min
NWS Bismarck, ND: flash flood warnings	14	5	64%	7	86%	55 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 7, 2:05 AM MST	High Wind Watch	BIS	10 hr
Jan 7, 12:17 PM MST	Wind Advisory	BIS	26 hr
Jan 9, 2:17 AM MST	Winter Storm Watch	BIS	37 hr
Jan 10, 3:30 PM MST	Winter Storm Warning	BIS	34 hr
Jan 10, 3:30 PM MST	Winter Weather Advisory	BIS	41 hr
Jan 18, 3:09 AM MST	High Wind Watch	BIS	12 hr
Jan 18, 2:47 PM MST	Wind Advisory	BIS	26 hr
Jan 19, 2:37 PM MST	Wind Chill Advisory	BIS	42 hr
Jan 28, 2:38 PM MST	Wind Chill Watch	BIS	24 hr
Jan 29, 3:19 AM MST	Wind Chill Advisory	BIS	44 hr
Jan 29, 2:17 PM MST	Wind Chill Warning	BIS	66 hr
Jan 31, 11:58 AM MST	Wind Chill Advisory	BIS	23 hr
Feb 1, 1:45 PM MST	Wind Advisory	BIS	27 hr
Feb 2, 10:22 AM MST	Winter Weather Advisory	BIS	10 hr
Feb 12, 2:45 PM MST	Wind Advisory	BIS	44 hr
Feb 17, 3:37 AM MST	Winter Weather Advisory	BIS	37 hr
Feb 18, 2:29 PM MST	Wind Chill Advisory	BIS	45 hr
Mar 2, 2:03 AM MST	Winter Storm Watch	BIS	13 hr
Mar 2, 2:40 PM MST	Winter Weather Advisory	BIS	62 hr
Mar 4, 3:08 AM MST	Blizzard Warning	BIS	20 hr
Mar 14, 3:03 AM MDT	Freezing Rain Advisory	BIS	33 hr
Mar 15, 3:17 PM MDT	Winter Storm Watch	BIS	24 hr
Mar 16, 3:37 PM MDT	Winter Weather Advisory	BIS	46 hr
Mar 28, 5:56 PM MDT	Dense Fog Advisory	BIS	20 hr
Apr 7, 3:57 AM MDT	Winter Weather Advisory	BIS	35 hr
Apr 12, 3:35 AM MDT	Winter Storm Watch	BIS	24 hr
Apr 13, 3:12 AM MDT	Winter Storm Warning	BIS	57 hr
Apr 13, 10:51 PM MDT	Mesoscale Discussion	SPC	5 hr
Apr 26, 3:26 PM MDT	Fire Weather Watch	BIS	12 hr
Apr 27, 3:27 AM MDT	Red Flag Warning	BIS	15 hr
Apr 30, 3:44 AM MDT	Wind Advisory	BIS	14 hr
May 10, 9:04 AM MDT	Wind Advisory	BIS	9 hr
May 11, 2:40 PM MDT	Fire Weather Watch	BIS	37 hr
May 12, 3:40 AM MDT	Fire Weather Watch	BIS	35 hr
May 12, 2:55 PM MDT	High Wind Watch	BIS	37 hr
May 13, 3:39 AM MDT	Red Flag Warning	BIS	15 hr
May 13, 2:54 PM MDT	Red Flag Warning	BIS	29 hr
May 13, 7:52 PM MDT	Wind Advisory	BIS	23 hr
May 17, 8:37 PM MDT	Severe Thunderstorm Warning	BIS	53 min
May 17, 9:19 PM MDT	Severe Thunderstorm Warning	BIS	41 min
May 18, 4:24 PM MDT	Mesoscale Discussion	SPC	66 min
May 18, 4:46 PM MDT	Severe Thunderstorm Watch	SPC	7 hr
May 18, 5:15 PM MDT	Severe Thunderstorm Warning	BIS	60 min
May 18, 6:09 PM MDT	Severe Thunderstorm Warning	BIS	51 min
May 18, 9:14 PM MDT	Mesoscale Discussion	SPC	61 min
May 19, 3:18 AM MDT	Flood Watch	BIS	47 hr
May 24, 3:08 AM MDT	Wind Advisory	BIS	15 hr
May 25, 1:52 PM MDT	Tornado Watch	SPC	8 hr
May 25, 4:32 PM MDT	Severe Thunderstorm Warning	BIS	43 min
May 25, 4:44 PM MDT	Severe Thunderstorm Warning	BIS	46 min
May 25, 5:16 PM MDT	Severe Thunderstorm Warning	BIS	44 min
May 25, 5:44 PM MDT	Severe Thunderstorm Warning	BIS	46 min
May 25, 6:32 PM MDT	Severe Thunderstorm Warning	BIS	43 min
May 25, 7:03 PM MDT	Severe Thunderstorm Warning	BIS	42 min
May 25, 7:09 PM MDT	Severe Thunderstorm Warning	BIS	51 min
May 25, 7:48 PM MDT	Mesoscale Discussion	SPC	87 min
May 27, 2:37 PM MDT	Flash Flood Watch	BIS	9 hr
May 27, 3:52 PM MDT	Mesoscale Discussion	SPC	83 min
May 27, 4:40 PM MDT	Areal Flood Advisory	BIS	6 hr
May 30, 12:26 PM MDT	Areal Flood Advisory	BIS	24 hr
May 31, 7:28 AM MDT	Areal Flood Advisory	BIS	9 hr
Jun 3, 6:25 PM MDT	Tornado Warning	BIS	50 min
Jun 20, 2:26 PM MDT	Severe Thunderstorm Watch	SPC	9 hr
Jun 21, 5:28 AM MDT	Dense Fog Advisory	BIS	5 hr
Jun 21, 6:49 AM MDT	Mesoscale Discussion	SPC	56 min
Jun 21, 11:01 AM MDT	Severe Thunderstorm Warning	BIS	44 min
Jun 21, 11:05 AM MDT	Severe Thunderstorm Warning	BIS	55 min
Jun 21, 11:43 AM MDT	Severe Thunderstorm Warning	BIS	47 min
Jun 21, 11:57 AM MDT	Severe Thunderstorm Warning	BIS	48 min
Jun 21, 12:49 PM MDT	Areal Flood Advisory	BIS	6 hr
Jun 22, 2:53 PM MDT	Severe Thunderstorm Watch	SPC	6 hr
Jun 22, 6:59 PM MDT	Severe Thunderstorm Warning	BIS	61 min
Jun 22, 7:30 PM MDT	Severe Thunderstorm Warning	BIS	60 min
Jun 22, 7:43 PM MDT	Severe Thunderstorm Warning	BIS	47 min
Jun 22, 8:14 PM MDT	Areal Flood Advisory	BIS	12 hr
Jun 22, 8:25 PM MDT	Severe Thunderstorm Warning	BIS	50 min
Jun 22, 8:53 PM MDT	Flash Flood Warning	BIS	6 hr
Jun 22, 9:19 PM MDT	High Wind Warning	BIS	101 min
Jun 24, 1:21 PM MDT	Mesoscale Discussion	SPC	114 min
Jun 25, 1:45 AM MDT	Flash Flood Watch	BIS	20 hr
Jul 6, 12:42 PM MDT	Severe Thunderstorm Watch	SPC	8 hr
Jul 8, 4:58 PM MDT	Mesoscale Discussion	SPC	2 hr
Jul 8, 5:22 PM MDT	Severe Thunderstorm Watch	SPC	6 hr
Jul 8, 7:42 PM MDT	Mesoscale Discussion	SPC	2 hr
Jul 8, 8:32 PM MDT	Severe Thunderstorm Warning	BIS	58 min
Jul 8, 9:18 PM MDT	Severe Thunderstorm Warning	BIS	57 min
Jul 8, 10:43 PM MDT	Mesoscale Discussion	SPC	2 hr
Jul 11, 6:34 PM MDT	Mesoscale Discussion	SPC	116 min
Jul 11, 6:54 PM MDT	Severe Thunderstorm Warning	BIS	66 min
Jul 13, 2:47 PM MDT	Severe Thunderstorm Watch	SPC	6 hr
Jul 13, 5:33 PM MDT	Mesoscale Discussion	SPC	87 min
Jul 13, 7:37 PM MDT	Mesoscale Discussion	SPC	53 min
Jul 21, 1:43 PM MDT	Tornado Watch	SPC	7 hr
Jul 21, 4:43 PM MDT	Severe Thunderstorm Warning	BIS	62 min
Jul 21, 4:54 PM MDT	Tornado Warning	BIS	36 min
Jul 21, 5:28 PM MDT	Tornado Warning	BIS	32 min
Jul 21, 5:38 PM MDT	Severe Thunderstorm Warning	BIS	52 min
Jul 23, 6:27 PM MDT	Severe Thunderstorm Warning	BIS	63 min
Jul 29, 12:58 PM MDT	Severe Thunderstorm Warning	BIS	47 min
Jul 29, 1:46 PM MDT	Mesoscale Discussion	SPC	119 min
Aug 4, 5:27 PM MDT	Mesoscale Discussion	SPC	63 min
Aug 4, 5:46 PM MDT	Severe Thunderstorm Warning	BIS	44 min
Aug 4, 6:27 PM MDT	Severe Thunderstorm Warning	BIS	63 min
Aug 20, 2:29 AM MDT	Heat Advisory	BIS	16 hr
Aug 24, 1:51 AM MDT	Heat Advisory	BIS	17 hr
Aug 26, 2:50 PM MDT	Mesoscale Discussion	SPC	55 min
Aug 27, 1:42 PM MDT	Mesoscale Discussion	SPC	63 min
Aug 27, 4:01 PM MDT	Severe Thunderstorm Warning	BIS	59 min
Aug 28, 7:55 PM MDT	Mesoscale Discussion	SPC	95 min
Aug 30, 6:11 AM MDT	Dense Fog Advisory	BIS	2 hr
Aug 30, 2:48 PM MDT	Mesoscale Discussion	SPC	117 min
Aug 30, 3:01 PM MDT	Severe Thunderstorm Watch	SPC	7 hr
Aug 30, 6:00 PM MDT	Severe Thunderstorm Warning	BIS	60 min
Sep 6, 3:28 AM MDT	Heat Advisory	BIS	14 hr
Sep 7, 2:31 PM MDT	Flash Flood Watch	BIS	39 hr
Sep 7, 4:21 PM MDT	Severe Thunderstorm Watch	SPC	7 hr
Sep 8, 3:52 PM MDT	Mesoscale Discussion	SPC	2 hr
Sep 8, 10:27 PM MDT	Severe Thunderstorm Watch	SPC	7 hr
Sep 18, 7:27 PM MDT	Mesoscale Discussion	SPC	2 hr
Sep 22, 7:02 PM MDT	Special Weather Statement	BIS	43 min
Sep 30, 3:27 PM MDT	Wind Advisory	BIS	4 hr
Oct 3, 2:58 AM MDT	Winter Storm Watch	BIS	34 hr
Oct 3, 12:33 PM MDT	Wind Advisory	BIS	46 hr
Oct 4, 4:22 AM MDT	Winter Storm Warning	BIS	32 hr
Oct 4, 6:10 PM MDT	Blizzard Warning	BIS	18 hr
Oct 4, 7:11 PM MDT	Mesoscale Discussion	SPC	6 hr
Oct 5, 12:42 PM MDT	Areal Flood Advisory	BIS	4 days
Oct 5, 1:45 PM MDT	Freeze Warning	BIS	19 hr
Oct 9, 2:12 PM MDT	Flood Watch	BIS	36 hr
Oct 9, 2:27 PM MDT	High Wind Watch	BIS	24 hr
Oct 10, 2:56 PM MDT	High Wind Warning	BIS	33 hr
Oct 10, 2:56 PM MDT	Wind Advisory	BIS	39 hr
Oct 11, 1:58 AM MDT	Areal Flood Advisory	BIS	24 hr
Oct 12, 2:34 AM MDT	Freeze Warning	BIS	30 hr
Oct 31, 2:16 PM MDT	Wind Advisory	BIS	27 hr
Dec 1, 5:03 AM MST	Winter Storm Watch	BIS	32 hr
Dec 1, 2:21 PM MST	Freezing Rain Advisory	BIS	19 hr
Dec 2, 12:36 PM MST	Winter Storm Warning	BIS	58 hr
Dec 3, 12:53 AM MST	Winter Weather Advisory	BIS	40 hr
Dec 4, 2:13 PM MST	Wind Chill Advisory	BIS	57 hr
Dec 6, 1:38 PM MST	Wind Chill Warning	BIS	22 hr
Dec 7, 11:49 AM MST	Wind Chill Advisory	BIS	49 hr
Dec 9, 10:35 AM MST	Blizzard Warning	BIS	12 hr
Dec 10, 2:33 PM MST	Wind Chill Advisory	BIS	20 hr
Dec 18, 2:22 AM MST	Winter Weather Advisory	BIS	42 hr
Dec 19, 12:31 PM MST	Mesoscale Discussion	SPC	4 hr
Dec 19, 2:42 PM MST	Wind Chill Advisory	BIS	18 hr
Dec 22, 2:58 AM MST	Wind Chill Advisory	BIS	50 hr
Dec 23, 3:33 AM MST	Winter Weather Advisory	BIS	32 hr
Dec 27, 2:50 PM MST	Wind Chill Advisory	BIS	43 hr
Dec 30, 3:09 AM MST	Winter Weather Advisory	BIS	44 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	30
Tornado Warning	3
Severe Thunderstorm Watch	9
Tornado Watch	2
Mesoscale Discussion	23
Special Weather Statement	1
Flooding
Flash Flood Warning	1
Flash Flood Watch	3
Flood Watch	2
Areal Flood Advisory	7
Winter
Blizzard Warning	3
Winter Storm Warning	4
Winter Storm Watch	6
Freezing Rain Advisory	2
Winter Weather Advisory	10
Heat
Heat Advisory	3
Cold
Freeze Warning	2
Wind Chill Warning	2
Wind Chill Watch	1
Wind Chill Advisory	10
Wind and dust
High Wind Warning	2
High Wind Watch	4
Wind Advisory	12
Fire
Red Flag Warning	3
Fire Weather Watch	3
Fog and smoke
Dense 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 2012 2014

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.