Alert archive / North Dakota / Dunn County

Weather alerts in Dunn County, North Dakota, 2017

93 weather alerts in 2017, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Dunn County and its neighbors

Each county as a circle sized by its count in 2017. Tap one for its archive.

Alerts: 93
Warnings: 17
Watches: 7
Advisories: 47
Busiest month: July26 alerts
Busiest day: July 20, 20177 alerts

Over time

By month

Warning verification

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

Dunn County, 2017

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	0			0
Severe thunderstorm warnings	5	5	0%	3	100%	13 min
Flash flood warnings	0			0

Each office's whole area, 2017

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Bismarck, ND: tornado warnings	5	1	80%	1	100%	2 min
NWS Bismarck, ND: severe thunderstorm warnings	148	98	34%	188	89%	25 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, 3:21 AM MST	Winter Storm Warning	BIS	50 hr
Jan 1, 3:21 AM MST	Winter Weather Advisory	BIS	38 hr
Jan 2, 3:52 PM MST	Wind Chill Advisory	BIS	22 hr
Jan 3, 2:06 PM MST	Wind Chill Warning	BIS	21 hr
Jan 4, 11:07 AM MST	Wind Chill Advisory	BIS	46 hr
Jan 6, 2:23 PM MST	Wind Chill Advisory	BIS	21 hr
Jan 7, 2:37 PM MST	Wind Chill Advisory	BIS	17 hr
Jan 10, 1:46 PM MST	Wind Chill Advisory	BIS	65 hr
Jan 20, 4:59 PM MST	Dense Fog Advisory	BIS	18 hr
Jan 27, 10:03 AM MST	Wind Advisory	BIS	7 hr
Jan 29, 2:07 AM MST	High Wind Watch	BIS	266 days
Jan 29, 10:24 PM MST	High Wind Warning	BIS	15 hr
Feb 7, 2:19 PM MST	Wind Chill Advisory	BIS	42 hr
Mar 5, 2:54 PM MST	Winter Weather Advisory	BIS	65 hr
Mar 5, 3:01 PM MST	High Wind Warning	BIS	53 hr
Mar 7, 7:40 PM MST	Wind Advisory	BIS	12 hr
Mar 10, 3:14 AM MST	Winter Weather Advisory	BIS	29 hr
Mar 11, 2:55 PM MST	Winter Weather Advisory	BIS	30 hr
Mar 27, 7:53 PM MDT	Dense Fog Advisory	BIS	15 hr
Apr 12, 2:09 PM MDT	Wind Advisory	BIS	34 hr
Apr 21, 4:21 AM MDT	Dense Fog Advisory	BIS	6 hr
Apr 23, 8:58 PM MDT	Winter Weather Advisory	BIS	14 hr
May 13, 10:31 PM MDT	Special Weather Statement	BIS	29 min
May 17, 1:38 PM MDT	Frost Advisory	BIS	18 hr
May 18, 1:44 PM MDT	Frost Advisory	BIS	18 hr
May 19, 1:59 PM MDT	Frost Advisory	BIS	12 hr
May 20, 2:33 PM MDT	Frost Advisory	BIS	16 hr
May 21, 2:55 PM MDT	Special Weather Statement	BIS	50 min
May 22, 8:24 PM MDT	Frost Advisory	BIS	11 hr
May 23, 2:04 PM MDT	Frost Advisory	BIS	17 hr
May 24, 10:49 AM MDT	Wind Advisory	BIS	8 hr
May 29, 11:47 AM MDT	Frost Advisory	BIS	20 hr
Jun 5, 4:01 PM MDT	Mesoscale Discussion	SPC	59 min
Jun 14, 12:12 AM MDT	Special Weather Statement	BIS	33 min
Jun 17, 3:49 PM MDT	Special Weather Statement	BIS	26 min
Jun 22, 2:59 AM MDT	Wind Advisory	BIS	18 hr
Jul 5, 2:09 PM MDT	Mesoscale Discussion	SPC	2 hr
Jul 5, 4:52 PM MDT	Mesoscale Discussion	SPC	2 hr
Jul 14, 3:01 AM MDT	Heat Advisory	BIS	16 hr
Jul 14, 1:51 PM MDT	Fire Weather Watch	BIS	22 hr
Jul 14, 2:03 PM MDT	Mesoscale Discussion	SPC	57 min
Jul 15, 11:52 AM MDT	Red Flag Warning	BIS	32 hr
Jul 16, 6:30 PM MDT	Mesoscale Discussion	SPC	2 hr
Jul 16, 6:38 PM MDT	Special Weather Statement	BIS	37 min
Jul 16, 10:12 PM MDT	Special Weather Statement	BIS	33 min
Jul 19, 1:36 AM MDT	Mesoscale Discussion	SPC	114 min
Jul 19, 6:01 AM MDT	Mesoscale Discussion	SPC	119 min
Jul 20, 2:32 PM MDT	Mesoscale Discussion	SPC	58 min
Jul 20, 2:49 PM MDT	Severe Thunderstorm Warning	BIS	56 min
Jul 20, 2:50 PM MDT	Severe Thunderstorm Watch	SPC	7 hr
Jul 20, 3:19 PM MDT	Severe Thunderstorm Warning	BIS	56 min
Jul 20, 4:05 PM MDT	Severe Thunderstorm Warning	BIS	55 min
Jul 20, 4:17 PM MDT	Severe Thunderstorm Warning	BIS	58 min
Jul 20, 4:45 PM MDT	Mesoscale Discussion	SPC	90 min
Jul 21, 4:03 PM MDT	Special Weather Statement	BIS	27 min
Jul 24, 2:50 PM MDT	Mesoscale Discussion	SPC	2 hr
Jul 27, 6:49 AM MDT	Special Weather Statement	BIS	41 min
Jul 27, 7:38 AM MDT	Special Weather Statement	BIS	37 min
Jul 29, 1:01 PM MDT	Mesoscale Discussion	SPC	89 min
Jul 29, 1:56 PM MDT	Severe Thunderstorm Warning	BIS	64 min
Jul 29, 5:47 PM MDT	Special Weather Statement	BIS	28 min
Jul 29, 6:18 PM MDT	Special Weather Statement	BIS	27 min
Aug 10, 5:12 AM MDT	Dense Fog Advisory	BIS	4 hr
Aug 16, 1:26 AM MDT	Dense Fog Advisory	BIS	8 hr
Aug 18, 1:41 AM MDT	Fire Weather Watch	BIS	25 hr
Aug 25, 11:19 PM MDT	Dense Fog Advisory	BIS	10 hr
Aug 27, 5:04 AM MDT	Dense Fog Advisory	BIS	5 hr
Sep 1, 1:56 PM MDT	Fire Weather Watch	BIS	24 hr
Sep 2, 1:55 PM MDT	Red Flag Warning	BIS	30 hr
Sep 3, 2:21 PM MDT	Fire Weather Watch	BIS	12 hr
Sep 4, 2:45 AM MDT	Red Flag Warning	BIS	16 hr
Sep 16, 2:23 PM MDT	Frost Advisory	BIS	18 hr
Oct 6, 1:31 PM MDT	Wind Advisory	BIS	26 hr
Oct 8, 1:48 PM MDT	Freeze Warning	BIS	18 hr
Oct 9, 8:45 AM MDT	Freeze Warning	BIS	23 hr
Oct 22, 3:00 PM MDT	Wind Advisory	BIS	27 hr
Oct 25, 2:36 PM MDT	Wind Advisory	BIS	27 hr
Oct 29, 1:58 AM MDT	Wind Advisory	BIS	38 hr
Nov 2, 1:35 PM MDT	Winter Weather Advisory	BIS	47 hr
Nov 20, 10:40 AM MST	Wind Advisory	BIS	15 hr
Nov 23, 1:39 PM MST	Wind Advisory	BIS	19 hr
Nov 29, 2:43 AM MST	Wind Advisory	BIS	18 hr
Dec 5, 2:34 AM MST	Winter Weather Advisory	BIS	16 hr
Dec 10, 8:39 PM MST	Wind Advisory	BIS	13 hr
Dec 12, 2:08 PM MST	Wind Advisory	BIS	21 hr
Dec 18, 2:01 PM MST	Winter Storm Watch	BIS	24 hr
Dec 19, 1:57 PM MST	Winter Storm Warning	BIS	30 hr
Dec 19, 1:57 PM MST	Winter Weather Advisory	BIS	36 hr
Dec 24, 2:57 AM MST	Wind Chill Warning	BIS	57 hr
Dec 24, 2:57 AM MST	Wind Chill Advisory	BIS	40 hr
Dec 26, 11:49 AM MST	Wind Chill Advisory	BIS	23 hr
Dec 27, 2:45 PM MST	Wind Chill Advisory	BIS	50 hr
Dec 29, 4:15 AM MST	Wind Chill Warning	BIS	3 days

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	5
Severe Thunderstorm Watch	1
Mesoscale Discussion	11
Special Weather Statement	11
Winter
Winter Storm Warning	2
Winter Storm Watch	1
Winter Weather Advisory	8
Heat
Heat Advisory	1
Cold
Freeze Warning	2
Wind Chill Warning	3
Frost Advisory	8
Wind Chill Advisory	9
Wind and dust
High Wind Warning	2
High Wind Watch	1
Wind Advisory	14
Fire
Red Flag Warning	3
Fire Weather Watch	4
Fog and smoke
Dense Fog Advisory	7

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2016 2018

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.