Alert archive / North Dakota / Dunn County

Weather alerts in Dunn County, North Dakota, 2019

107 weather alerts in 2019, 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 2019. Tap one for its archive.

Alerts: 107
Warnings: 28
Watches: 14
Advisories: 37
Busiest month: July20 alerts
Busiest day: July 31, 20196 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, 2019

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	0			0
Severe thunderstorm warnings	15	13	13%	9	100%	11 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 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 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 Storm Warning	BIS	56 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 10, 1:47 PM MST	Wind Chill Advisory	BIS	15 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 14, 2:56 PM MST	Wind Chill Warning	BIS	20 hr
Feb 15, 1:32 PM MST	Winter Storm Watch	BIS	13 hr
Feb 16, 2:48 AM MST	Winter Weather Advisory	BIS	31 hr
Feb 18, 12:49 PM MST	Wind Chill Advisory	BIS	20 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, 1:27 PM MST	Wind Chill Advisory	BIS	30 hr
Mar 1, 8:07 PM MST	Wind Chill Warning	BIS	60 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 Weather Advisory	BIS	41 hr
Mar 21, 8:29 AM MDT	River Flood Warning	BIS	47 hr
Mar 22, 10:58 PM MDT	Areal Flood Advisory	BIS	17 hr
Mar 24, 8:42 AM MDT	Dense Fog Advisory	BIS	24 hr
Apr 5, 8:39 PM MDT	Dense Fog Advisory	BIS	36 hr
Apr 19, 8:12 AM MDT	Red Flag Warning	BIS	11 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
Apr 27, 2:06 PM MDT	Winter Weather Advisory	BIS	30 hr
May 9, 2:18 AM MDT	Fire Weather Watch	BIS	24 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, 3:40 PM MDT	Mesoscale Discussion	SPC	95 min
Jun 3, 7:48 PM MDT	Special Weather Statement	BIS	42 min
Jun 24, 2:50 PM MDT	Special Weather Statement	BIS	25 min
Jun 28, 3:17 AM MDT	Special Weather Statement	BIS	28 min
Jun 28, 4:56 AM MDT	Severe Thunderstorm Warning	BIS	64 min
Jun 29, 1:15 AM MDT	Mesoscale Discussion	SPC	2 hr
Jun 29, 4:12 PM MDT	Mesoscale Discussion	SPC	93 min
Jun 29, 5:08 PM MDT	Tornado Watch	SPC	7 hr
Jul 2, 12:50 AM MDT	Special Weather Statement	BIS	40 min
Jul 2, 2:38 PM MDT	Severe Thunderstorm Watch	SPC	10 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, 1:13 PM MDT	Severe Thunderstorm Warning	BIS	62 min
Jul 8, 2:40 PM MDT	Mesoscale Discussion	SPC	65 min
Jul 9, 12:54 PM MDT	Areal Flood Advisory	BIS	9 hr
Jul 9, 9:36 PM MDT	Areal Flood Advisory	BIS	23 hr
Jul 12, 8:18 PM MDT	Mesoscale Discussion	SPC	87 min
Jul 14, 10:50 PM MDT	Mesoscale Discussion	SPC	85 min
Jul 15, 12:12 AM MDT	Severe Thunderstorm Warning	BIS	63 min
Jul 17, 2:41 PM MDT	Mesoscale Discussion	SPC	3 hr
Jul 17, 5:38 PM MDT	Severe Thunderstorm Warning	BIS	67 min
Jul 24, 3:51 PM MDT	Mesoscale Discussion	SPC	2 hr
Jul 31, 2:51 PM MDT	Mesoscale Discussion	SPC	2 hr
Jul 31, 3:44 PM MDT	Special Weather Statement	BIS	31 min
Jul 31, 3:51 PM MDT	Severe Thunderstorm Watch	SPC	6 hr
Jul 31, 4:31 PM MDT	Special Weather Statement	BIS	44 min
Jul 31, 4:47 PM MDT	Severe Thunderstorm Warning	BIS	58 min
Jul 31, 5:35 PM MDT	Mesoscale Discussion	SPC	85 min
Jul 31, 6:17 PM MDT	Areal Flood Advisory	BIS	3 hr
Jul 31, 7:02 PM MDT	Severe Thunderstorm Warning	BIS	58 min
Aug 1, 2:31 PM MDT	Severe Thunderstorm Warning	BIS	44 min
Aug 1, 2:55 PM MDT	Mesoscale Discussion	SPC	95 min
Aug 1, 2:56 PM MDT	Severe Thunderstorm Warning	BIS	64 min
Aug 3, 5:20 PM MDT	Severe Thunderstorm Warning	BIS	55 min
Aug 4, 9:48 PM MDT	Severe Thunderstorm Warning	BIS	57 min
Aug 4, 10:02 PM MDT	Mesoscale Discussion	SPC	88 min
Aug 4, 10:29 PM MDT	Severe Thunderstorm Watch	SPC	8 hr
Aug 4, 10:38 PM MDT	Severe Thunderstorm Warning	BIS	52 min
Aug 5, 2:08 AM MDT	Mesoscale Discussion	SPC	97 min
Aug 6, 1:22 PM MDT	Severe Thunderstorm Warning	BIS	38 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 10, 7:43 AM MDT	Special Weather Statement	BIS	32 min
Aug 19, 5:06 PM MDT	Mesoscale Discussion	SPC	114 min
Aug 19, 6:04 PM MDT	Severe Thunderstorm Warning	BIS	56 min
Aug 19, 7:09 PM MDT	Severe Thunderstorm Warning	BIS	24 min
Aug 24, 4:48 PM MDT	Mesoscale Discussion	SPC	117 min
Aug 25, 1:50 PM MDT	Mesoscale Discussion	SPC	115 min
Sep 2, 9:54 AM MDT	Mesoscale Discussion	SPC	96 min
Sep 2, 12:00 PM MDT	Severe Thunderstorm Warning	BIS	45 min
Sep 20, 11:49 AM MDT	Mesoscale Discussion	SPC	116 min
Sep 25, 3:29 PM MDT	Special Weather Statement	BIS	46 min
Sep 30, 1:07 PM MDT	Freeze Warning	BIS	16 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 10, 2:30 PM MDT	Winter Weather Advisory	BIS	45 hr
Oct 12, 11:38 AM MDT	Wind Advisory	BIS	5 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 8, 12:41 PM MST	Winter Storm Warning	BIS	13 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

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	15
Severe Thunderstorm Watch	5
Tornado Watch	1
Mesoscale Discussion	20
Special Weather Statement	8
Flooding
River Flood Warning	1
Areal Flood Advisory	4
Winter
Winter Storm Warning	4
Winter Storm Watch	5
Winter Weather Advisory	8
Cold
Freeze Warning	1
Wind Chill Warning	4
Frost Advisory	1
Wind Chill Advisory	14
Wind and dust
High Wind Warning	1
High Wind Watch	1
Wind Advisory	3
Fire
Red Flag Warning	2
Fire Weather Watch	2
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 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.