Alert archive / North Dakota / McHenry County

Weather alerts in McHenry County, North Dakota, 2014

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

McHenry County and its neighbors

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

Alerts: 123
Warnings: 26
Watches: 12
Advisories: 58
Busiest month: January19 alerts
Busiest day: August 17, 20147 alerts

Over time

By month

Warning verification

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

McHenry County, 2014

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	0			0
Severe thunderstorm warnings	3	2	33%	1	100%	18 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 11, 3:15 PM CST	Freezing Rain Advisory	BIS	17 hr
Jan 13, 3:09 AM CST	Winter Weather Advisory	BIS	30 hr
Jan 14, 3:17 PM CST	Blizzard Watch	BIS	20 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, 4:15 AM CST	Wind Chill Advisory	BIS	29 hr
Jan 21, 9:37 PM CST	Winter Weather Advisory	BIS	15 hr
Jan 22, 3:35 AM CST	Wind Chill Advisory	BIS	33 hr
Jan 22, 3:39 PM CST	Wind Chill Warning	BIS	21 hr
Jan 24, 4:09 AM CST	Winter Weather Advisory	BIS	16 hr
Jan 25, 3:14 AM CST	Blizzard Watch	BIS	9 hr
Jan 25, 12:25 PM CST	Blizzard Warning	BIS	32 hr
Jan 26, 3:58 PM CST	Wind Chill Warning	BIS	45 hr
Jan 29, 3:51 PM CST	Wind Chill Advisory	BIS	44 hr
Feb 1, 3:10 PM CST	Wind Chill Advisory	BIS	9 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 12, 2:52 PM CST	Winter Weather Advisory	BIS	18 hr
Feb 20, 3:21 PM CST	Wind Chill Advisory	BIS	19 hr
Feb 21, 3:11 PM CST	Wind Chill Advisory	BIS	19 hr
Feb 22, 3:23 PM CST	Wind Chill Advisory	BIS	19 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 25, 2:51 PM CST	Wind Advisory	BIS	28 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, 6:41 AM CST	Wind Advisory	BIS	8 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 2, 12:24 PM CST	Wind Chill Advisory	BIS	10 hr
Mar 6, 1:27 AM CST	Freezing Rain Advisory	BIS	4 hr
Mar 6, 3:27 AM CST	Winter Weather Advisory	BIS	15 hr
Mar 15, 1:50 PM CDT	River Flood Warning	BIS	26 days
Mar 17, 12:03 PM CDT	River Flood Warning	BIS	4 days
Mar 20, 3:56 AM CDT	Winter Weather Advisory	BIS	27 hr
Mar 20, 2:51 PM CDT	Wind Advisory	BIS	28 hr
Mar 30, 4:21 AM CDT	Winter Weather Advisory	BIS	35 hr
Apr 7, 10:43 AM CDT	River Flood Warning	BIS	6 days
Apr 9, 2:51 AM CDT	Wind Advisory	BIS	17 hr
Apr 14, 9:16 PM CDT	River Flood Warning	BIS	8 days
Apr 18, 4:10 AM CDT	Wind Advisory	BIS	18 hr
Apr 21, 4:41 PM CDT	River Flood Warning	BIS	35 days
Apr 23, 4:39 AM CDT	Wind Advisory	BIS	14 hr
Apr 26, 11:27 AM CDT	Wind Advisory	BIS	32 hr
Apr 28, 11:31 AM CDT	River Flood Warning	BIS	29 days
Apr 29, 10:19 AM CDT	River Flood Warning	BIS	27 days
May 11, 3:56 PM CDT	Wind Advisory	BIS	27 hr
May 13, 3:26 PM CDT	Freeze Warning	BIS	18 hr
May 14, 3:37 PM CDT	Freeze Warning	BIS	17 hr
May 15, 3:51 PM CDT	Freeze Warning	BIS	16 hr
May 29, 1:26 PM CDT	Wind Advisory	BIS	5 hr
May 29, 3:15 PM CDT	Mesoscale Discussion	SPC	60 min
May 29, 3:45 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
May 29, 6:25 PM CDT	Mesoscale Discussion	SPC	65 min
May 29, 8:47 PM CDT	Mesoscale Discussion	SPC	58 min
May 29, 11:04 PM CDT	Special Weather Statement	BIS	56 min
Jun 1, 4:09 AM CDT	Flood Watch	BIS	27 hr
Jun 4, 5:55 PM CDT	Severe Thunderstorm Warning	BIS	65 min
Jun 4, 6:40 PM CDT	Mesoscale Discussion	SPC	95 min
Jun 4, 8:15 PM CDT	Severe Thunderstorm Warning	BIS	26 min
Jun 5, 3:15 PM CDT	Special Weather Statement	BIS	60 min
Jun 6, 10:53 AM CDT	River Flood Warning	BIS	6 days
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 29, 2:49 AM CDT	Wind Advisory	BIS	17 hr
Jun 30, 3:04 AM CDT	Wind Advisory	BIS	16 hr
Jun 30, 2:26 PM CDT	River Flood Warning	BIS	28 days
Jun 30, 2:26 PM CDT	River Flood Warning	BIS	29 days
Jul 1, 10:47 AM CDT	River Flood Warning	BIS	31 days
Jul 7, 12:28 PM CDT	Special Weather Statement	BIS	62 min
Jul 10, 10:42 PM CDT	Special Weather Statement	BIS	33 min
Jul 10, 11:52 PM CDT	Special Weather Statement	BIS	53 min
Jul 21, 12:52 PM CDT	Mesoscale Discussion	SPC	83 min
Jul 21, 1:09 PM CDT	Tornado Watch	SPC	6 hr
Jul 21, 3:20 PM CDT	Mesoscale Discussion	SPC	55 min
Jul 21, 4:01 PM CDT	Mesoscale Discussion	SPC	89 min
Jul 21, 4:46 PM CDT	Special Weather Statement	BIS	59 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, 6:47 AM CDT	Mesoscale Discussion	SPC	118 min
Jul 24, 7:20 AM CDT	Special Weather Statement	BIS	55 min
Jul 24, 8:15 AM CDT	Special Weather Statement	BIS	60 min
Jul 24, 8:23 PM CDT	Mesoscale Discussion	SPC	97 min
Jul 25, 2:33 AM CDT	Special Weather Statement	BIS	27 min
Jul 30, 5:09 AM CDT	Dense Fog Advisory	BIS	4 hr
Aug 17, 2:20 PM CDT	Mesoscale Discussion	SPC	85 min
Aug 17, 3:37 PM CDT	Severe Thunderstorm Warning	BIS	55 min
Aug 17, 3:52 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Aug 17, 4:45 PM CDT	Special Weather Statement	BIS	60 min
Aug 17, 6:11 PM CDT	Special Weather Statement	BIS	64 min
Aug 17, 6:17 PM CDT	Special Weather Statement	BIS	58 min
Aug 17, 6:39 PM CDT	Mesoscale Discussion	SPC	66 min
Aug 20, 6:50 PM CDT	Special Weather Statement	BIS	40 min
Aug 20, 7:25 PM CDT	Special Weather Statement	BIS	35 min
Aug 22, 3:50 PM CDT	Flood Watch	BIS	34 hr
Sep 3, 7:01 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Sep 3, 8:54 PM CDT	Mesoscale Discussion	SPC	96 min
Sep 11, 3:21 AM CDT	Freeze Warning	BIS	30 hr
Sep 14, 2:57 PM CDT	Frost Advisory	BIS	18 hr
Oct 2, 1:18 PM CDT	Wind Advisory	BIS	30 hr
Oct 3, 2:23 PM CDT	Freeze Warning	BIS	19 hr
Oct 5, 3:40 AM CDT	Wind Advisory	BIS	15 hr
Nov 6, 1:24 PM CST	Wind Advisory	BIS	35 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 13, 4:54 PM CST	Dense Fog Advisory	BIS	19 hr
Dec 14, 10:57 AM CST	Freezing Rain Advisory	BIS	25 hr
Dec 19, 2:56 PM CST	Dense Fog Advisory	BIS	23 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	3
Severe Thunderstorm Watch	4
Tornado Watch	1
Mesoscale Discussion	13
Special Weather Statement	14
Flooding
River Flood Warning	11
Flash Flood Watch	2
Flood Watch	2
Winter
Blizzard Warning	2
Blizzard Watch	3
Freezing Rain Advisory	3
Winter Weather Advisory	12
Cold
Freeze Warning	5
Wind Chill Warning	4
Frost Advisory	1
Wind Chill Advisory	22
Wind and dust
High Wind Warning	1
Wind Advisory	17
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 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.