Alert archive / North Dakota / Williams County

Weather alerts in Williams County, North Dakota, 2014

137 weather alerts in 2014, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Williams County and its neighbors

Each county as a circle sized by its count in 2014. Tap one for its archive.

Alerts: 137
Warnings: 35
Watches: 16
Advisories: 52
Busiest month: June23 alerts
Busiest day: June 14, 20148 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 Williams County in 2014 had a tornado report inside them.

Williams County, 2014

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	3	0	100%	0
Severe thunderstorm warnings	15	10	33%	26	77%	27 min
Flash flood warnings	0			0

Each office's whole area, 2014

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Bismarck, ND: tornado warnings	31	1	97%	14	21%	2 min
NWS Bismarck, ND: severe thunderstorm warnings	136	84	38%	203	83%	24 min
NWS Bismarck, ND: flash flood warnings	7	2	71%	7	43%	86 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, Central Time. Each opens its own page with the text, the map, the radar and the sounding.

Issued	Product	Office	Lasted
Jan 2, 2:49 PM CST	Blizzard Watch	BIS	13 hr
Jan 3, 3:41 AM CST	Blizzard Warning	BIS	24 hr
Jan 4, 1:01 AM CST	Winter Weather Advisory	BIS	3 hr
Jan 4, 3:50 AM CST	Wind Chill Warning	BIS	66 hr
Jan 7, 3:31 PM CST	Wind Chill Advisory	BIS	21 hr
Jan 12, 4:10 PM CST	High Wind Watch	BIS	12 hr
Jan 13, 4:03 AM CST	High Wind Warning	BIS	21 hr
Jan 13, 4:03 AM CST	Wind Advisory	BIS	26 hr
Jan 14, 3:32 PM CST	High Wind Watch	BIS	12 hr
Jan 15, 3:29 AM CST	High Wind Warning	BIS	39 hr
Jan 17, 4:28 AM CST	Wind Advisory	BIS	30 hr
Jan 20, 4:07 AM CST	Wind Advisory	BIS	8 hr
Jan 22, 3:35 AM CST	Wind Chill Advisory	BIS	33 hr
Jan 24, 4:07 AM CST	Wind Advisory	BIS	17 hr
Jan 25, 3:14 AM CST	Blizzard Watch	BIS	9 hr
Jan 25, 9:58 AM CST	High Wind Warning	BIS	33 hr
Jan 25, 12:25 PM CST	Blizzard Warning	BIS	32 hr
Jan 26, 3:58 PM CST	Wind Chill Advisory	BIS	45 hr
Jan 30, 3:40 AM CST	Wind Chill Advisory	BIS	32 hr
Feb 3, 2:34 PM CST	Wind Chill Advisory	BIS	20 hr
Feb 4, 2:36 PM CST	Wind Chill Advisory	BIS	46 hr
Feb 6, 3:11 PM CST	Wind Chill Advisory	BIS	19 hr
Feb 8, 3:14 PM CST	Wind Chill Advisory	BIS	21 hr
Feb 11, 3:28 PM CST	Winter Weather Advisory	BIS	42 hr
Feb 13, 12:24 AM CST	Wind Advisory	BIS	9 hr
Feb 14, 2:25 PM CST	Freezing Rain Advisory	BIS	5 hr
Feb 23, 2:59 PM CST	Wind Chill Advisory	BIS	19 hr
Feb 24, 2:53 PM CST	Wind Chill Advisory	BIS	19 hr
Feb 25, 2:50 PM CST	Wind Chill Advisory	BIS	19 hr
Feb 26, 3:15 PM CST	Wind Chill Advisory	BIS	19 hr
Feb 27, 2:54 PM CST	Wind Chill Advisory	BIS	21 hr
Feb 28, 12:12 PM CST	Wind Chill Advisory	BIS	3 hr
Feb 28, 2:49 PM CST	Wind Chill Warning	BIS	46 hr
Mar 6, 3:27 AM CST	Winter Weather Advisory	BIS	15 hr
Mar 10, 10:18 AM CDT	River Flood Advisory	BIS	56 hr
Mar 10, 12:43 PM CDT	River Flood Watch	BIS	45 hr
Mar 12, 9:52 AM CDT	River Flood Warning	BIS	7 days
Mar 18, 4:23 AM CDT	Dense Fog Advisory	BIS	6 hr
Apr 8, 4:14 AM CDT	Fire Weather Watch	BIS	11 hr
Apr 9, 2:51 AM CDT	Wind Advisory	BIS	17 hr
Apr 27, 11:05 PM CDT	Winter Weather Advisory	BIS	11 hr
May 6, 6:47 PM CDT	Special Weather Statement	BIS	43 min
May 13, 3:26 PM CDT	Freeze Warning	BIS	18 hr
May 14, 3:37 PM CDT	Freeze Warning	BIS	17 hr
May 18, 5:57 PM CDT	Mesoscale Discussion	SPC	63 min
May 18, 6:12 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
May 18, 8:44 PM CDT	Mesoscale Discussion	SPC	61 min
May 19, 5:08 PM CDT	Special Weather Statement	BIS	37 min
May 19, 5:30 PM CDT	Special Weather Statement	BIS	30 min
May 19, 6:49 PM CDT	Special Weather Statement	BIS	56 min
May 20, 9:48 PM CDT	Frost Advisory	BIS	10 hr
May 26, 3:27 PM CDT	Mesoscale Discussion	SPC	93 min
May 26, 4:24 PM CDT	Severe Thunderstorm Warning	BIS	66 min
May 26, 5:14 PM CDT	Severe Thunderstorm Warning	BIS	46 min
May 26, 5:29 PM CDT	Severe Thunderstorm Warning	BIS	61 min
May 26, 6:29 PM CDT	Severe Thunderstorm Warning	BIS	61 min
May 26, 8:57 PM CDT	Areal Flood Advisory	BIS	5 hr
May 27, 12:19 PM CDT	River Flood Warning	BIS	11 days
May 29, 3:15 PM CDT	Mesoscale Discussion	SPC	60 min
May 31, 6:28 PM CDT	Mesoscale Discussion	SPC	3 hr
May 31, 8:55 PM CDT	Special Weather Statement	BIS	35 min
May 31, 9:36 PM CDT	Special Weather Statement	BIS	54 min
May 31, 9:41 PM CDT	Severe Thunderstorm Warning	BIS	64 min
May 31, 11:42 PM CDT	Areal Flood Advisory	BIS	6 hr
Jun 1, 12:25 AM CDT	Areal Flood Advisory	BIS	6 hr
Jun 1, 2:36 AM CDT	Areal Flood Warning	BIS	12 hr
Jun 1, 4:09 AM CDT	Flood Watch	BIS	27 hr
Jun 4, 3:28 PM CDT	Special Weather Statement	BIS	32 min
Jun 5, 3:15 PM CDT	Special Weather Statement	BIS	60 min
Jun 13, 8:46 PM CDT	Special Weather Statement	BIS	59 min
Jun 13, 9:02 PM CDT	Special Weather Statement	BIS	58 min
Jun 13, 9:08 PM CDT	Severe Thunderstorm Warning	BIS	67 min
Jun 13, 9:18 PM CDT	Special Weather Statement	BIS	27 min
Jun 13, 9:27 PM CDT	Areal Flood Advisory	BIS	4 hr
Jun 13, 9:50 PM CDT	Tornado Warning	BIS	25 min
Jun 13, 10:13 PM CDT	Tornado Warning	BIS	32 min
Jun 13, 10:36 PM CDT	Severe Thunderstorm Warning	BIS	54 min
Jun 17, 5:37 PM CDT	Flash Flood Watch	BIS	10 hr
Jun 18, 11:17 AM CDT	Flash Flood Watch	BIS	16 hr
Jun 26, 2:46 PM CDT	Flash Flood Watch	BIS	52 hr
Jun 28, 7:38 PM CDT	Areal Flood Warning	BIS	4 days
Jun 29, 2:49 AM CDT	Wind Advisory	BIS	17 hr
Jun 30, 3:04 AM CDT	Wind Advisory	BIS	16 hr
Jul 6, 5:57 PM CDT	Mesoscale Discussion	SPC	93 min
Jul 6, 6:39 PM CDT	Special Weather Statement	BIS	66 min
Jul 6, 6:54 PM CDT	Severe Thunderstorm Warning	BIS	66 min
Jul 6, 7:18 PM CDT	Mesoscale Discussion	SPC	57 min
Jul 6, 7:35 PM CDT	Severe Thunderstorm Warning	BIS	55 min
Jul 6, 7:36 PM CDT	Severe Thunderstorm Watch	SPC	4 hr
Jul 6, 7:56 PM CDT	Tornado Warning	BIS	34 min
Jul 24, 2:41 AM CDT	Mesoscale Discussion	SPC	2 hr
Jul 24, 3:27 AM CDT	Severe Thunderstorm Watch	SPC	6 hr
Jul 24, 4:59 AM CDT	Special Weather Statement	BIS	31 min
Jul 24, 5:23 AM CDT	Severe Thunderstorm Warning	BIS	52 min
Jul 24, 2:50 PM CDT	Mesoscale Discussion	SPC	55 min
Jul 24, 3:54 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Jul 24, 5:53 PM CDT	Mesoscale Discussion	SPC	97 min
Jul 24, 7:58 PM CDT	Severe Thunderstorm Warning	BIS	62 min
Jul 24, 8:03 PM CDT	High Wind Warning	BIS	110 min
Jul 24, 8:23 PM CDT	Mesoscale Discussion	SPC	97 min
Jul 24, 9:48 PM CDT	Special Weather Statement	BIS	57 min
Jul 30, 5:09 AM CDT	Dense Fog Advisory	BIS	4 hr
Aug 3, 4:56 PM CDT	Mesoscale Discussion	SPC	2 hr
Aug 5, 11:35 AM CDT	Special Weather Statement	BIS	40 min
Aug 5, 12:47 PM CDT	Special Weather Statement	BIS	43 min
Aug 9, 2:30 PM CDT	Special Weather Statement	BIS	30 min
Aug 9, 2:51 PM CDT	Special Weather Statement	BIS	39 min
Aug 22, 3:50 PM CDT	Flood Watch	BIS	34 hr
Aug 30, 6:04 PM CDT	Special Weather Statement	BIS	56 min
Aug 31, 5:39 PM CDT	Severe Thunderstorm Warning	BIS	35 min
Sep 3, 5:25 PM CDT	Mesoscale Discussion	SPC	95 min
Sep 3, 5:41 PM CDT	Severe Thunderstorm Warning	BIS	64 min
Sep 3, 7:01 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Sep 3, 7:47 PM CDT	Special Weather Statement	BIS	28 min
Sep 3, 8:06 PM CDT	Severe Thunderstorm Warning	BIS	54 min
Sep 3, 8:43 PM CDT	Severe Thunderstorm Warning	BIS	62 min
Sep 3, 8:54 PM CDT	Mesoscale Discussion	SPC	96 min
Sep 11, 3:21 AM CDT	Freeze Warning	BIS	30 hr
Sep 13, 3:29 PM CDT	Frost Advisory	BIS	18 hr
Sep 14, 2:57 PM CDT	Frost Advisory	BIS	18 hr
Oct 2, 9:40 PM CDT	Freeze Warning	BIS	12 hr
Oct 3, 2:23 PM CDT	Freeze Warning	BIS	19 hr
Nov 6, 1:24 PM CST	Wind Advisory	BIS	35 hr
Nov 8, 4:13 AM CST	Winter Weather Advisory	BIS	55 hr
Nov 15, 3:51 AM CST	Wind Chill Advisory	BIS	5 hr
Nov 15, 2:42 PM CST	Winter Weather Advisory	BIS	31 hr
Nov 15, 2:43 PM CST	Wind Advisory	BIS	24 hr
Nov 22, 3:29 PM CST	Wind Advisory	BIS	30 hr
Nov 25, 4:03 AM CST	Winter Weather Advisory	BIS	24 hr
Nov 26, 3:58 PM CST	Winter Weather Advisory	BIS	36 hr
Nov 29, 4:42 AM CST	Wind Chill Advisory	BIS	55 hr
Dec 14, 10:57 AM CST	Freezing Rain Advisory	BIS	25 hr
Dec 19, 12:35 AM CST	Dense Fog Advisory	BIS	5 hr
Dec 19, 2:56 PM CST	Dense Fog Advisory	BIS	23 hr
Dec 21, 3:42 PM CST	Winter Weather Advisory	BIS	44 hr
Dec 27, 4:31 PM CST	Wind Chill Advisory	BIS	67 hr
Dec 30, 3:22 PM CST	Wind Chill Advisory	BIS	12 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
Tornado Warning	3
Severe Thunderstorm Watch	5
Mesoscale Discussion	14
Special Weather Statement	20
Flooding
Areal Flood Warning	2
River Flood Warning	2
Flash Flood Watch	3
Flood Watch	2
River Flood Watch	1
Areal Flood Advisory	4
River Flood Advisory	1
Winter
Blizzard Warning	2
Blizzard Watch	2
Freezing Rain Advisory	2
Winter Weather Advisory	9
Cold
Freeze Warning	5
Wind Chill Warning	2
Frost Advisory	3
Wind Chill Advisory	18
Wind and dust
High Wind Warning	4
High Wind Watch	2
Wind Advisory	11
Fire
Fire Weather Watch	1
Fog and smoke
Dense Fog Advisory	4

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2013 2015

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.