Alert archive / North Dakota / Dunn County

Weather alerts in Dunn County, North Dakota, 2015

141 weather alerts in 2015, 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 2015. Tap one for its archive.

Alerts: 141
Warnings: 40
Watches: 23
Advisories: 39
Busiest month: June29 alerts
Busiest day: June 2, 20157 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 1 tornado warnings covering Dunn County in 2015 had a tornado report inside them; 0 of 2 tornado reports fell inside a warning.

Dunn County, 2015

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	1	0	100%	2	0%
Severe thunderstorm warnings	20	16	20%	10	80%	17 min
Flash flood warnings	0			0

Each office's whole area, 2015

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Bismarck, ND: tornado warnings	15	1	93%	7	14%	4 min
NWS Bismarck, ND: severe thunderstorm warnings	183	122	33%	264	77%	26 min
NWS Bismarck, ND: flash flood warnings	4	2	50%	2	100%	26 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 3, 5:30 AM MST	Wind Chill Advisory	BIS	54 hr
Jan 4, 12:34 PM MST	Winter Weather Advisory	BIS	26 hr
Jan 5, 2:42 PM MST	Wind Chill Advisory	BIS	32 hr
Jan 6, 2:24 AM MST	Wind Chill Warning	BIS	33 hr
Jan 7, 2:55 PM MST	Winter Weather Advisory	BIS	26 hr
Jan 8, 1:41 PM MST	Wind Chill Advisory	BIS	21 hr
Jan 11, 2:09 PM MST	Wind Chill Advisory	BIS	19 hr
Jan 16, 1:33 PM MST	Wind Advisory	BIS	22 hr
Feb 3, 8:37 PM MST	Wind Chill Advisory	BIS	12 hr
Feb 7, 2:12 PM MST	Freezing Rain Advisory	BIS	23 hr
Feb 8, 1:53 PM MST	Dense Fog Advisory	BIS	31 hr
Feb 9, 2:38 AM MST	Freezing Rain Advisory	BIS	29 hr
Feb 9, 9:48 PM MST	Mesoscale Discussion	SPC	3 hr
Feb 20, 4:50 PM MST	Wind Chill Advisory	BIS	60 hr
Feb 25, 2:34 AM MST	Wind Chill Advisory	BIS	32 hr
Mar 2, 1:25 PM MST	Wind Advisory	BIS	28 hr
Mar 3, 1:56 PM MST	Wind Chill Advisory	BIS	21 hr
Mar 13, 1:48 PM MDT	Fire Weather Watch	BIS	13 hr
Mar 14, 2:55 AM MDT	Fire Weather Watch	BIS	24 hr
Mar 14, 2:55 AM MDT	Red Flag Warning	BIS	16 hr
Mar 28, 2:59 AM MDT	Wind Advisory	BIS	33 hr
Mar 28, 12:57 PM MDT	Mesoscale Discussion	SPC	48 min
Mar 28, 5:21 PM MDT	Special Weather Statement	BIS	24 min
Mar 28, 5:41 PM MDT	Severe Thunderstorm Warning	BIS	49 min
Mar 31, 2:56 AM MDT	Fire Weather Watch	BIS	11 hr
Mar 31, 2:25 PM MDT	Red Flag Warning	BIS	30 hr
Mar 31, 2:46 PM MDT	Wind Advisory	BIS	28 hr
Apr 2, 5:35 AM MDT	Wind Advisory	BIS	12 hr
Apr 11, 3:13 AM MDT	Red Flag Warning	BIS	15 hr
Apr 11, 2:47 PM MDT	Fire Weather Watch	BIS	12 hr
Apr 12, 2:58 AM MDT	Red Flag Warning	BIS	18 hr
Apr 13, 2:59 AM MDT	Fire Weather Watch	BIS	17 hr
Apr 13, 7:58 PM MDT	Red Flag Warning	BIS	25 hr
Apr 19, 1:33 PM MDT	Red Flag Warning	BIS	31 hr
Apr 30, 2:28 PM MDT	Fire Weather Watch	BIS	12 hr
May 1, 2:21 AM MDT	Red Flag Warning	BIS	16 hr
May 1, 1:51 PM MDT	Fire Weather Watch	BIS	12 hr
May 2, 2:10 AM MDT	Red Flag Warning	BIS	17 hr
May 3, 5:56 PM MDT	Frost Advisory	BIS	14 hr
May 7, 1:58 PM MDT	Frost Advisory	BIS	17 hr
May 8, 2:40 PM MDT	Frost Advisory	BIS	17 hr
May 17, 1:54 PM MDT	Freeze Warning	BIS	19 hr
May 18, 3:00 AM MDT	Freeze Warning	BIS	29 hr
May 19, 2:01 PM MDT	Frost Advisory	BIS	18 hr
May 27, 4:17 PM MDT	Special Weather Statement	BIS	43 min
May 27, 5:03 PM MDT	Special Weather Statement	BIS	57 min
May 28, 1:45 PM MDT	Special Weather Statement	BIS	30 min
May 29, 1:56 PM MDT	Frost Advisory	BIS	18 hr
Jun 1, 2:41 PM MDT	Mesoscale Discussion	SPC	2 hr
Jun 1, 8:51 PM MDT	Severe Thunderstorm Warning	BIS	54 min
Jun 1, 10:04 PM MDT	Special Weather Statement	BIS	26 min
Jun 1, 10:46 PM MDT	Special Weather Statement	BIS	44 min
Jun 1, 11:28 PM MDT	Areal Flood Advisory	BIS	8 hr
Jun 2, 2:16 PM MDT	Special Weather Statement	BIS	44 min
Jun 2, 2:34 PM MDT	Severe Thunderstorm Warning	BIS	56 min
Jun 2, 2:43 PM MDT	Severe Thunderstorm Warning	BIS	62 min
Jun 6, 5:04 AM MDT	Areal Flood Advisory	BIS	8 hr
Jun 6, 4:50 PM MDT	Special Weather Statement	BIS	40 min
Jun 6, 5:28 PM MDT	Special Weather Statement	BIS	32 min
Jun 13, 1:12 AM MDT	Special Weather Statement	BIS	33 min
Jun 19, 12:53 PM MDT	Mesoscale Discussion	SPC	2 hr
Jun 19, 2:01 PM MDT	Severe Thunderstorm Watch	SPC	9 hr
Jun 19, 4:48 PM MDT	Mesoscale Discussion	SPC	57 min
Jun 19, 5:02 PM MDT	Severe Thunderstorm Warning	BIS	58 min
Jun 19, 5:41 PM MDT	Severe Thunderstorm Warning	BIS	64 min
Jun 19, 6:38 PM MDT	Severe Thunderstorm Warning	BIS	67 min
Jun 21, 1:28 PM MDT	Mesoscale Discussion	SPC	2 hr
Jun 21, 2:23 PM MDT	Tornado Watch	SPC	8 hr
Jun 21, 4:24 PM MDT	Mesoscale Discussion	SPC	66 min
Jun 21, 7:32 PM MDT	Mesoscale Discussion	SPC	88 min
Jun 23, 1:05 PM MDT	Mesoscale Discussion	SPC	55 min
Jun 24, 5:51 PM MDT	Special Weather Statement	BIS	24 min
Jun 24, 6:12 PM MDT	Special Weather Statement	BIS	33 min
Jun 24, 6:48 PM MDT	Severe Thunderstorm Warning	BIS	57 min
Jun 24, 7:00 PM MDT	Tornado Warning	BIS	30 min
Jun 25, 3:33 PM MDT	Severe Thunderstorm Warning	BIS	57 min
Jun 30, 4:29 PM MDT	Tornado Watch	SPC	7 hr
Jun 30, 7:08 PM MDT	Severe Thunderstorm Warning	BIS	56 min
Jul 4, 12:43 PM MDT	Mesoscale Discussion	SPC	2 hr
Jul 4, 1:47 PM MDT	Severe Thunderstorm Watch	SPC	7 hr
Jul 4, 4:53 PM MDT	Severe Thunderstorm Warning	BIS	52 min
Jul 4, 5:39 PM MDT	Severe Thunderstorm Warning	BIS	40 min
Jul 7, 3:51 PM MDT	Special Weather Statement	BIS	24 min
Jul 7, 4:27 PM MDT	Severe Thunderstorm Warning	BIS	46 min
Jul 15, 12:36 AM MDT	Special Weather Statement	BIS	24 min
Jul 15, 6:06 PM MDT	Mesoscale Discussion	SPC	2 hr
Jul 15, 8:36 PM MDT	Special Weather Statement	BIS	24 min
Jul 15, 9:02 PM MDT	Special Weather Statement	BIS	28 min
Jul 23, 2:58 PM MDT	Severe Thunderstorm Watch	SPC	11 hr
Jul 23, 4:25 PM MDT	Special Weather Statement	BIS	50 min
Jul 26, 1:43 PM MDT	Mesoscale Discussion	SPC	2 hr
Jul 26, 2:42 PM MDT	Severe Thunderstorm Watch	SPC	6 hr
Jul 26, 3:07 PM MDT	Special Weather Statement	BIS	38 min
Jul 26, 3:37 PM MDT	Severe Thunderstorm Warning	BIS	34 min
Jul 26, 4:10 PM MDT	Severe Thunderstorm Warning	BIS	65 min
Jul 26, 5:23 PM MDT	Mesoscale Discussion	SPC	97 min
Jul 26, 5:41 PM MDT	Severe Thunderstorm Warning	BIS	64 min
Jul 27, 2:40 AM MDT	High Wind Watch	BIS	23 hr
Jul 27, 3:44 PM MDT	Mesoscale Discussion	SPC	3 hr
Jul 27, 5:51 PM MDT	Mesoscale Discussion	SPC	2 hr
Jul 27, 6:31 PM MDT	Severe Thunderstorm Watch	SPC	7 hr
Jul 27, 8:19 PM MDT	Mesoscale Discussion	SPC	116 min
Jul 27, 9:31 PM MDT	Severe Thunderstorm Warning	BIS	59 min
Jul 28, 1:33 AM MDT	High Wind Warning	BIS	22 hr
Aug 9, 5:05 PM MDT	Special Weather Statement	BIS	25 min
Aug 14, 3:10 AM MDT	Fire Weather Watch	BIS	12 hr
Aug 14, 2:50 PM MDT	Red Flag Warning	BIS	29 hr
Aug 21, 12:42 PM MDT	High Wind Warning	BIS	35 hr
Aug 21, 12:42 PM MDT	Wind Advisory	BIS	53 hr
Aug 28, 1:55 PM MDT	Fire Weather Watch	BIS	13 hr
Aug 31, 1:34 AM MDT	Special Weather Statement	BIS	56 min
Sep 5, 6:00 PM MDT	Severe Thunderstorm Watch	SPC	9 hr
Sep 5, 8:21 PM MDT	Mesoscale Discussion	SPC	84 min
Sep 5, 10:25 PM MDT	Mesoscale Discussion	SPC	95 min
Sep 5, 11:20 PM MDT	Severe Thunderstorm Warning	BIS	55 min
Sep 5, 11:44 PM MDT	Special Weather Statement	BIS	46 min
Sep 5, 11:51 PM MDT	Severe Thunderstorm Warning	BIS	54 min
Sep 10, 12:59 PM MDT	Frost Advisory	BIS	19 hr
Sep 16, 8:12 PM MDT	Severe Thunderstorm Warning	BIS	49 min
Sep 17, 2:14 PM MDT	Frost Advisory	BIS	18 hr
Oct 10, 10:10 AM MDT	High Wind Watch	BIS	17 hr
Oct 10, 1:19 PM MDT	Fire Weather Watch	BIS	14 hr
Oct 11, 2:48 AM MDT	High Wind Warning	BIS	35 hr
Oct 11, 2:49 AM MDT	Red Flag Warning	BIS	17 hr
Oct 15, 2:33 AM MDT	Freeze Warning	BIS	30 hr
Oct 26, 3:17 AM MDT	Dense Fog Advisory	BIS	8 hr
Oct 28, 2:44 AM MDT	Wind Advisory	BIS	15 hr
Oct 31, 2:46 AM MDT	Wind Advisory	BIS	15 hr
Nov 9, 11:45 PM MST	Dense Fog Advisory	BIS	11 hr
Nov 10, 1:47 PM MST	High Wind Watch	BIS	24 hr
Nov 11, 1:48 PM MST	Wind Advisory	BIS	27 hr
Nov 16, 6:32 AM MST	Dense Fog Advisory	BIS	4 hr
Nov 16, 1:46 PM MST	Fire Weather Watch	BIS	30 hr
Nov 16, 1:49 PM MST	High Wind Watch	BIS	30 hr
Nov 17, 3:44 AM MST	High Wind Warning	BIS	55 hr
Nov 17, 8:14 PM MST	Red Flag Warning	BIS	23 hr
Nov 19, 2:33 AM MST	Wind Advisory	BIS	14 hr
Dec 9, 3:17 AM MST	Wind Advisory	BIS	35 hr
Dec 12, 2:36 PM MST	Dense Fog Advisory	BIS	23 hr
Dec 13, 2:02 PM MST	Dense Fog Advisory	BIS	20 hr
Dec 20, 7:05 PM MST	Dense Fog Advisory	BIS	16 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	20
Tornado Warning	1
Severe Thunderstorm Watch	6
Tornado Watch	2
Mesoscale Discussion	18
Special Weather Statement	21
Flooding
Areal Flood Advisory	2
Winter
Freezing Rain Advisory	2
Winter Weather Advisory	2
Cold
Freeze Warning	3
Wind Chill Warning	1
Frost Advisory	7
Wind Chill Advisory	8
Wind and dust
High Wind Warning	4
High Wind Watch	4
Wind Advisory	11
Fire
Red Flag Warning	11
Fire Weather Watch	11
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 2014 2016

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.