Alert archive / North Dakota / Morton County

Weather alerts in Morton County, North Dakota, 2008

149 weather alerts in 2008, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Morton County and its neighbors

Each county as a circle sized by its count in 2008. Tap one for its archive.

Alerts: 149
Warnings: 91
Watches: 26
Advisories: 1
Busiest month: July43 alerts
Busiest day: July 31, 200811 alerts

Over time

By month

Warning verification

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

6 of 13 tornado warnings covering Morton County in 2008 had a tornado report inside them; 4 of 5 tornado reports fell inside a warning, on average 20 minutes after it went out.

Morton County, 2008

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	13	6	54%	5	80%	20 min
Severe thunderstorm warnings	55	21	62%	18	83%	27 min
Flash flood warnings	0			0

Each office's whole area, 2008

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Bismarck, ND: tornado warnings	60	15	75%	24	79%	14 min
NWS Bismarck, ND: severe thunderstorm warnings	432	134	69%	216	90%	27 min
NWS Bismarck, ND: flash flood warnings	10	3	70%	4	75%	10 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
Mar 10, 3:28 PM CDT	Red Flag Warning	BIS	4 hr
Mar 24, 5:03 AM CDT	Red Flag Warning	BIS	17 hr
Mar 29, 5:22 AM CDT	Red Flag Warning	BIS	13 hr
Apr 4, 4:55 AM CDT	Red Flag Warning	BIS	16 hr
Apr 13, 4:05 AM CDT	Fire Weather Watch	BIS	25 hr
Apr 14, 4:58 AM CDT	Red Flag Warning	BIS	17 hr
Apr 14, 4:08 PM CDT	Fire Weather Watch	BIS	12 hr
Apr 15, 4:24 AM CDT	Red Flag Warning	BIS	18 hr
Apr 16, 2:21 PM CDT	Red Flag Warning	BIS	7 hr
Apr 17, 4:12 AM CDT	Red Flag Warning	BIS	17 hr
Apr 17, 4:03 PM CDT	Fire Weather Watch	BIS	13 hr
Apr 18, 4:38 AM CDT	Red Flag Warning	BIS	16 hr
Apr 18, 3:43 PM CDT	Fire Weather Watch	BIS	13 hr
Apr 19, 4:37 AM CDT	Red Flag Warning	BIS	20 hr
Apr 20, 5:25 AM CDT	Red Flag Warning	BIS	17 hr
Apr 20, 7:05 PM CDT	Mesoscale Discussion	SPC	55 min
Apr 21, 4:19 PM CDT	Fire Weather Watch	BIS	12 hr
Apr 22, 4:45 AM CDT	Red Flag Warning	BIS	17 hr
Apr 27, 4:57 AM CDT	Red Flag Warning	BIS	16 hr
Apr 28, 4:07 AM CDT	Red Flag Warning	BIS	17 hr
May 2, 5:22 AM CDT	Red Flag Warning	BIS	16 hr
May 4, 4:25 AM CDT	Red Flag Warning	BIS	17 hr
May 15, 1:00 PM CDT	Fire Weather Watch	BIS	16 hr
May 16, 4:37 AM CDT	Red Flag Warning	BIS	16 hr
May 16, 1:45 PM CDT	Fire Weather Watch	BIS	15 hr
May 17, 4:21 AM CDT	Red Flag Warning	BIS	17 hr
May 18, 3:45 PM CDT	Fire Weather Watch	BIS	13 hr
May 19, 4:29 AM CDT	Red Flag Warning	BIS	17 hr
May 21, 12:56 PM CDT	Red Flag Warning	BIS	8 hr
May 24, 6:07 PM CDT	Mesoscale Discussion	SPC	113 min
May 24, 6:24 PM CDT	Tornado Watch	SPC	5 hr
May 24, 7:46 PM CDT	Severe Thunderstorm Warning	BIS	44 min
May 24, 8:03 PM CDT	Tornado Warning	BIS	27 min
May 24, 8:15 PM CDT	Tornado Warning	BIS	30 min
May 24, 8:24 PM CDT	Severe Thunderstorm Warning	BIS	51 min
May 24, 8:26 PM CDT	Tornado Warning	BIS	34 min
May 24, 8:33 PM CDT	Severe Thunderstorm Warning	BIS	42 min
May 24, 8:33 PM CDT	Severe Thunderstorm Warning	BIS	42 min
May 24, 8:44 PM CDT	Severe Thunderstorm Warning	BIS	61 min
May 24, 9:26 PM CDT	Mesoscale Discussion	SPC	2 hr
May 29, 8:52 PM CDT	Severe Thunderstorm Warning	BIS	53 min
Jun 8, 2:53 PM CDT	Mesoscale Discussion	SPC	2 hr
Jun 11, 12:02 PM CDT	Severe Thunderstorm Warning	BIS	43 min
Jun 11, 1:42 PM CDT	Severe Thunderstorm Warning	BIS	35 min
Jun 13, 4:33 PM CDT	Severe Thunderstorm Warning	BIS	42 min
Jun 13, 5:33 PM CDT	Mesoscale Discussion	SPC	87 min
Jun 14, 1:43 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Jun 18, 1:42 PM CDT	Severe Thunderstorm Warning	BIS	48 min
Jun 18, 2:27 PM CDT	Mesoscale Discussion	SPC	93 min
Jun 18, 4:59 PM CDT	Severe Thunderstorm Watch	SPC	5 hr
Jun 18, 5:29 PM CDT	Severe Thunderstorm Warning	BIS	46 min
Jun 18, 5:57 PM CDT	Tornado Warning	BIS	33 min
Jun 18, 6:10 PM CDT	Severe Thunderstorm Warning	BIS	50 min
Jun 18, 6:27 PM CDT	Tornado Warning	BIS	33 min
Jun 18, 6:28 PM CDT	Severe Thunderstorm Warning	BIS	62 min
Jun 18, 6:29 PM CDT	Severe Thunderstorm Warning	BIS	61 min
Jun 18, 6:58 PM CDT	Severe Thunderstorm Warning	BIS	62 min
Jun 18, 7:01 PM CDT	Tornado Warning	BIS	29 min
Jun 18, 7:21 PM CDT	Tornado Warning	BIS	24 min
Jun 18, 7:29 PM CDT	Tornado Warning	BIS	31 min
Jun 18, 7:40 PM CDT	Severe Thunderstorm Warning	BIS	35 min
Jun 18, 7:47 PM CDT	Tornado Warning	BIS	43 min
Jun 18, 7:55 PM CDT	Tornado Warning	BIS	35 min
Jun 18, 7:58 PM CDT	Severe Thunderstorm Warning	BIS	62 min
Jun 18, 8:32 PM CDT	Severe Thunderstorm Warning	BIS	58 min
Jun 18, 8:46 PM CDT	Mesoscale Discussion	SPC	89 min
Jun 18, 9:27 PM CDT	Severe Thunderstorm Warning	BIS	63 min
Jun 24, 12:51 AM CDT	Severe Thunderstorm Warning	BIS	54 min
Jun 24, 2:19 PM CDT	Mesoscale Discussion	SPC	86 min
Jun 24, 2:51 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Jun 24, 4:58 PM CDT	Severe Thunderstorm Warning	BIS	62 min
Jun 24, 5:59 PM CDT	Severe Thunderstorm Warning	BIS	61 min
Jun 24, 6:39 PM CDT	Severe Thunderstorm Warning	BIS	66 min
Jun 26, 1:41 PM CDT	Mesoscale Discussion	SPC	94 min
Jun 26, 1:59 PM CDT	Severe Thunderstorm Watch	SPC	5 hr
Jun 26, 5:09 PM CDT	Severe Thunderstorm Warning	BIS	66 min
Jun 26, 5:59 PM CDT	Severe Thunderstorm Warning	BIS	61 min
Jun 26, 6:46 PM CDT	Severe Thunderstorm Watch	SPC	5 hr
Jun 26, 6:57 PM CDT	Severe Thunderstorm Warning	BIS	63 min
Jun 26, 7:15 PM CDT	Severe Thunderstorm Warning	BIS	60 min
Jul 10, 2:41 AM CDT	Mesoscale Discussion	SPC	3 hr
Jul 10, 3:46 PM CDT	Mesoscale Discussion	SPC	59 min
Jul 10, 4:11 PM CDT	Tornado Watch	SPC	7 hr
Jul 10, 4:55 PM CDT	Severe Thunderstorm Warning	BIS	65 min
Jul 10, 5:03 PM CDT	Tornado Warning	BIS	27 min
Jul 10, 5:44 PM CDT	Severe Thunderstorm Warning	BIS	61 min
Jul 10, 5:50 PM CDT	Tornado Warning	BIS	40 min
Jul 10, 5:59 PM CDT	Severe Thunderstorm Warning	BIS	61 min
Jul 10, 6:03 PM CDT	Mesoscale Discussion	SPC	57 min
Jul 10, 6:45 PM CDT	Severe Thunderstorm Warning	BIS	60 min
Jul 15, 8:07 PM CDT	Severe Thunderstorm Warning	BIS	53 min
Jul 16, 3:34 AM CDT	Mesoscale Discussion	SPC	56 min
Jul 18, 6:38 PM CDT	Severe Thunderstorm Warning	BIS	37 min
Jul 19, 2:53 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Jul 19, 5:01 PM CDT	Mesoscale Discussion	SPC	89 min
Jul 19, 5:52 PM CDT	Severe Thunderstorm Warning	BIS	38 min
Jul 19, 6:18 PM CDT	Severe Thunderstorm Warning	BIS	42 min
Jul 19, 6:52 PM CDT	Severe Thunderstorm Warning	BIS	53 min
Jul 19, 7:38 PM CDT	Severe Thunderstorm Warning	BIS	67 min
Jul 26, 9:57 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Jul 27, 3:39 AM CDT	Severe Thunderstorm Warning	BIS	66 min
Jul 28, 6:14 AM CDT	Severe Thunderstorm Watch	SPC	8 hr
Jul 28, 7:50 AM CDT	Mesoscale Discussion	SPC	85 min
Jul 28, 12:17 PM CDT	Mesoscale Discussion	SPC	58 min
Jul 28, 3:38 PM CDT	Mesoscale Discussion	SPC	67 min
Jul 28, 7:09 PM CDT	Mesoscale Discussion	SPC	111 min
Jul 28, 7:09 PM CDT	Mesoscale Discussion	SPC	2 hr
Jul 28, 7:34 PM CDT	Tornado Watch	SPC	4 hr
Jul 28, 7:51 PM CDT	Severe Thunderstorm Warning	BIS	54 min
Jul 30, 3:39 PM CDT	Mesoscale Discussion	SPC	66 min
Jul 30, 4:07 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Jul 30, 5:20 PM CDT	Severe Thunderstorm Warning	BIS	40 min
Jul 30, 7:04 PM CDT	Mesoscale Discussion	SPC	56 min
Jul 30, 9:38 PM CDT	Severe Thunderstorm Warning	BIS	19 min
Jul 30, 10:04 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Jul 30, 11:38 PM CDT	Severe Thunderstorm Warning	BIS	67 min
Jul 30, 11:45 PM CDT	Areal Flood Advisory	BIS	6 hr
Jul 31, 12:00 AM CDT	Severe Thunderstorm Warning	BIS	60 min
Jul 31, 12:18 AM CDT	Severe Thunderstorm Warning	BIS	57 min
Jul 31, 12:28 AM CDT	Severe Thunderstorm Warning	BIS	32 min
Jul 31, 12:46 AM CDT	Severe Thunderstorm Warning	BIS	59 min
Jul 31, 12:50 AM CDT	Mesoscale Discussion	SPC	85 min
Jul 31, 1:48 AM CDT	Severe Thunderstorm Warning	BIS	57 min
Aug 1, 9:08 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Aug 1, 10:12 PM CDT	Severe Thunderstorm Warning	BIS	48 min
Aug 1, 10:52 PM CDT	Severe Thunderstorm Warning	BIS	53 min
Aug 1, 10:54 PM CDT	Mesoscale Discussion	SPC	96 min
Aug 3, 12:05 AM CDT	Severe Thunderstorm Watch	SPC	8 hr
Aug 11, 1:35 PM CDT	Tornado Warning	BIS	25 min
Aug 11, 2:34 PM CDT	Severe Thunderstorm Warning	BIS	41 min
Aug 21, 3:33 PM CDT	Mesoscale Discussion	SPC	117 min
Aug 21, 9:36 PM CDT	Severe Thunderstorm Warning	BIS	54 min
Aug 21, 9:58 PM CDT	Severe Thunderstorm Warning	BIS	48 min
Aug 21, 10:36 PM CDT	Severe Thunderstorm Warning	BIS	54 min
Aug 22, 1:40 AM CDT	Severe Thunderstorm Warning	BIS	50 min
Aug 26, 2:33 PM CDT	Mesoscale Discussion	SPC	2 hr
Aug 29, 3:54 AM CDT	Fire Weather Watch	BIS	24 hr
Aug 30, 4:11 AM CDT	Red Flag Warning	BIS	18 hr
Aug 30, 4:11 PM CDT	Fire Weather Watch	BIS	11 hr
Aug 31, 3:37 AM CDT	Red Flag Warning	BIS	18 hr
Sep 21, 9:52 PM CDT	Severe Thunderstorm Warning	BIS	38 min
Sep 22, 7:35 PM CDT	Severe Thunderstorm Watch	SPC	8 hr
Sep 22, 10:21 PM CDT	Mesoscale Discussion	SPC	54 min
Sep 23, 1:13 PM CDT	Mesoscale Discussion	SPC	2 hr
Oct 7, 3:56 PM CDT	Red Flag Warning	BIS	29 hr
Nov 6, 3:33 AM CST	Mesoscale Discussion	SPC	4 hr
Nov 14, 2:17 PM CST	Mesoscale Discussion	SPC	58 min
Dec 13, 6:29 PM CST	Mesoscale Discussion	SPC	4 hr
Dec 26, 11:56 AM CST	Mesoscale Discussion	SPC	4 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	55
Tornado Warning	13
Severe Thunderstorm Watch	13
Tornado Watch	3
Mesoscale Discussion	31
Flooding
Areal Flood Advisory	1
Fire
Red Flag Warning	23
Fire Weather Watch	10

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2007 2009

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.