Alert archive / South Dakota / Jackson County

Weather alerts in Jackson County, South Dakota, 2008

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

Jackson County and its neighbors

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

Alerts: 150
Warnings: 41
Watches: 33
Advisories: 36
Busiest month: June42 alerts
Busiest day: June 3, 20087 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 Jackson County in 2008 had a tornado report inside them.

Jackson County, 2008

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	1	0	100%	0
Severe thunderstorm warnings	27	16	41%	9	89%	34 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 Rapid City, SD: tornado warnings	20	8	60%	11	73%	15 min
NWS Rapid City, SD: severe thunderstorm warnings	496	269	46%	410	90%	28 min
NWS Rapid City, SD: flash flood warnings	13	1	92%	2	50%	93 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 19, 2:56 PM MST	Winter Weather Advisory	UNR	44 hr
Jan 21, 2:48 PM MST	Wind Chill Advisory	UNR	18 hr
Jan 22, 2:54 PM MST	Blowing Snow Advisory	UNR	19 hr
Jan 28, 3:35 AM MST	Winter Weather Advisory	UNR	23 hr
Jan 28, 2:46 PM MST	Wind Chill Advisory	UNR	26 hr
Feb 8, 1:25 PM MST	Winter Weather Advisory	UNR	38 hr
Feb 10, 3:23 PM MST	Winter Weather Advisory	UNR	26 hr
Feb 11, 6:07 AM MST	Mesoscale Discussion	SPC	3 hr
Feb 16, 2:53 PM MST	Wind Advisory	UNR	28 hr
Mar 1, 2:53 PM MST	Wind Advisory	UNR	28 hr
Mar 15, 2:35 PM MDT	Snow Advisory	UNR	23 hr
Mar 29, 4:01 AM MDT	Wind Advisory	UNR	11 hr
Mar 29, 2:26 PM MDT	Mesoscale Discussion	SPC	3 hr
Mar 29, 2:56 PM MDT	Winter Storm Watch	UNR	37 hr
Mar 30, 11:45 AM MDT	Winter Storm Warning	UNR	24 hr
Apr 8, 2:43 AM MDT	Winter Storm Watch	UNR	49 hr
Apr 9, 3:04 PM MDT	Winter Storm Warning	UNR	44 hr
Apr 9, 3:04 PM MDT	Winter Weather Advisory	UNR	44 hr
Apr 11, 4:11 AM MDT	Wind Advisory	UNR	14 hr
Apr 20, 6:05 PM MDT	Mesoscale Discussion	SPC	55 min
Apr 23, 4:38 PM MDT	Mesoscale Discussion	SPC	3 hr
Apr 23, 5:48 PM MDT	Severe Thunderstorm Watch	SPC	6 hr
Apr 30, 4:38 AM MDT	Winter Storm Watch	UNR	34 hr
Apr 30, 4:18 PM MDT	Mesoscale Discussion	SPC	117 min
May 1, 2:18 PM MDT	Snow and Blowing Snow Advisory	UNR	24 hr
May 10, 3:26 AM MDT	Wind Advisory	UNR	11 hr
May 19, 10:32 AM MDT	Wind Advisory	UNR	9 hr
May 21, 2:55 AM MDT	Wind Advisory	UNR	11 hr
May 22, 2:36 PM MDT	Flood Watch	UNR	42 hr
May 22, 9:16 PM MDT	Areal Flood Advisory	UNR	12 hr
May 23, 12:20 PM MDT	Areal Flood Warning	UNR	36 hr
May 23, 5:19 PM MDT	Wind Advisory	UNR	4 hr
May 24, 12:18 PM MDT	Mesoscale Discussion	SPC	57 min
May 24, 1:39 PM MDT	Tornado Watch	SPC	7 hr
May 29, 12:33 PM MDT	Tornado Watch	SPC	7 hr
May 29, 5:06 PM MDT	Severe Thunderstorm Warning	UNR	54 min
May 29, 5:57 PM MDT	Severe Thunderstorm Warning	UNR	51 min
Jun 1, 2:29 PM MDT	Tornado Watch	SPC	8 hr
Jun 1, 4:23 PM MDT	Severe Thunderstorm Warning	UNR	97 min
Jun 1, 4:32 PM MDT	Tornado Warning	UNR	43 min
Jun 1, 8:46 PM MDT	Mesoscale Discussion	SPC	59 min
Jun 2, 4:01 PM MDT	Mesoscale Discussion	SPC	59 min
Jun 2, 6:11 PM MDT	Mesoscale Discussion	SPC	34 min
Jun 2, 6:33 PM MDT	Severe Thunderstorm Watch	SPC	5 hr
Jun 2, 7:16 PM MDT	Severe Thunderstorm Warning	UNR	59 min
Jun 2, 8:11 PM MDT	Severe Thunderstorm Warning	UNR	64 min
Jun 3, 1:38 AM MDT	Mesoscale Discussion	SPC	67 min
Jun 3, 1:53 AM MDT	Severe Thunderstorm Watch	SPC	4 hr
Jun 3, 3:25 AM MDT	Severe Thunderstorm Warning	UNR	43 min
Jun 4, 3:22 AM MDT	Flood Watch	UNR	40 hr
Jun 4, 10:52 PM MDT	Areal Flood Advisory	UNR	18 hr
Jun 5, 9:11 AM MDT	Mesoscale Discussion	SPC	94 min
Jun 5, 4:25 PM MDT	Areal Flood Warning	UNR	48 hr
Jun 8, 1:53 PM MDT	Mesoscale Discussion	SPC	2 hr
Jun 9, 2:01 PM MDT	Flood Watch	UNR	40 hr
Jun 10, 2:42 PM MDT	Mesoscale Discussion	SPC	2 hr
Jun 10, 7:06 PM MDT	Tornado Watch	SPC	5 hr
Jun 17, 12:40 PM MDT	Mesoscale Discussion	SPC	65 min
Jun 17, 1:27 PM MDT	Severe Thunderstorm Watch	SPC	8 hr
Jun 17, 6:29 PM MDT	Mesoscale Discussion	SPC	61 min
Jun 18, 12:19 PM MDT	Mesoscale Discussion	SPC	56 min
Jun 18, 1:19 PM MDT	Severe Thunderstorm Watch	SPC	7 hr
Jun 18, 5:29 PM MDT	Mesoscale Discussion	SPC	2 hr
Jun 21, 4:03 PM MDT	Severe Thunderstorm Watch	SPC	3 hr
Jun 23, 4:52 PM MDT	Severe Thunderstorm Watch	SPC	7 hr
Jun 23, 6:50 PM MDT	Mesoscale Discussion	SPC	55 min
Jun 24, 10:52 PM MDT	Severe Thunderstorm Warning	UNR	24 min
Jun 25, 7:31 PM MDT	Severe Thunderstorm Watch	SPC	7 hr
Jun 25, 9:55 PM MDT	Severe Thunderstorm Warning	UNR	30 min
Jun 25, 10:18 PM MDT	Mesoscale Discussion	SPC	87 min
Jun 26, 2:48 PM MDT	Mesoscale Discussion	SPC	87 min
Jun 26, 5:28 PM MDT	Mesoscale Discussion	SPC	62 min
Jun 26, 6:14 PM MDT	Tornado Watch	SPC	7 hr
Jun 26, 8:49 PM MDT	Severe Thunderstorm Warning	UNR	56 min
Jun 26, 9:21 PM MDT	Severe Thunderstorm Warning	UNR	54 min
Jun 26, 9:33 PM MDT	Severe Thunderstorm Warning	UNR	42 min
Jun 26, 10:03 PM MDT	Severe Thunderstorm Warning	UNR	57 min
Jun 26, 10:44 PM MDT	Severe Thunderstorm Warning	UNR	61 min
Jun 28, 3:05 AM MDT	Wind Advisory	UNR	12 hr
Jul 11, 3:36 AM MDT	Wind Advisory	UNR	16 hr
Jul 16, 3:50 PM MDT	Mesoscale Discussion	SPC	115 min
Jul 16, 10:54 PM MDT	Mesoscale Discussion	SPC	96 min
Jul 18, 3:41 AM MDT	Flash Flood Watch	UNR	25 hr
Jul 18, 7:01 AM MDT	Severe Thunderstorm Warning	UNR	59 min
Jul 18, 4:32 PM MDT	Severe Thunderstorm Watch	SPC	10 hr
Jul 18, 7:45 PM MDT	Mesoscale Discussion	SPC	2 hr
Jul 18, 10:47 PM MDT	Mesoscale Discussion	SPC	88 min
Jul 19, 1:59 AM MDT	Severe Thunderstorm Warning	UNR	61 min
Jul 20, 4:22 PM MDT	Severe Thunderstorm Watch	SPC	7 hr
Jul 22, 11:38 AM MDT	Flash Flood Watch	UNR	16 hr
Jul 23, 1:22 PM MDT	Mesoscale Discussion	SPC	113 min
Jul 24, 2:04 PM MDT	Severe Thunderstorm Watch	SPC	7 hr
Jul 24, 6:36 PM MDT	Mesoscale Discussion	SPC	54 min
Jul 24, 6:42 PM MDT	Severe Thunderstorm Warning	UNR	78 min
Jul 24, 7:02 PM MDT	Severe Thunderstorm Warning	UNR	58 min
Jul 24, 7:35 PM MDT	Severe Thunderstorm Warning	UNR	55 min
Jul 24, 8:08 PM MDT	Mesoscale Discussion	SPC	67 min
Jul 24, 8:36 PM MDT	Severe Thunderstorm Warning	UNR	54 min
Jul 26, 7:51 PM MDT	Mesoscale Discussion	SPC	84 min
Jul 26, 8:02 PM MDT	Severe Thunderstorm Watch	SPC	7 hr
Jul 26, 10:15 PM MDT	Mesoscale Discussion	SPC	90 min
Jul 27, 1:25 AM MDT	Mesoscale Discussion	SPC	95 min
Aug 4, 5:53 AM MDT	Severe Thunderstorm Warning	UNR	67 min
Aug 4, 6:46 AM MDT	Severe Thunderstorm Warning	UNR	59 min
Aug 5, 8:40 PM MDT	Mesoscale Discussion	SPC	2 hr
Aug 5, 8:56 PM MDT	Severe Thunderstorm Warning	UNR	32 min
Aug 11, 1:58 PM MDT	Severe Thunderstorm Watch	SPC	7 hr
Aug 12, 1:30 PM MDT	Mesoscale Discussion	SPC	90 min
Aug 12, 5:26 PM MDT	Severe Thunderstorm Warning	UNR	58 min
Aug 12, 5:41 PM MDT	Severe Thunderstorm Warning	UNR	64 min
Aug 21, 4:52 PM MDT	Wind Advisory	UNR	13 hr
Aug 26, 1:33 PM MDT	Mesoscale Discussion	SPC	2 hr
Aug 26, 3:56 PM MDT	Severe Thunderstorm Watch	SPC	7 hr
Aug 30, 4:10 AM MDT	Wind Advisory	UNR	40 hr
Sep 10, 4:47 PM MDT	Mesoscale Discussion	SPC	88 min
Sep 12, 2:41 PM MDT	Wind Advisory	UNR	30 hr
Sep 21, 4:51 PM MDT	Mesoscale Discussion	SPC	84 min
Sep 21, 7:04 PM MDT	Severe Thunderstorm Warning	UNR	30 min
Sep 22, 4:21 PM MDT	Mesoscale Discussion	SPC	84 min
Sep 22, 4:57 PM MDT	Severe Thunderstorm Watch	SPC	7 hr
Sep 22, 6:53 PM MDT	Severe Thunderstorm Warning	UNR	67 min
Sep 22, 7:27 PM MDT	Mesoscale Discussion	SPC	93 min
Sep 22, 7:52 PM MDT	Severe Thunderstorm Warning	UNR	53 min
Sep 29, 1:49 PM MDT	Frost Advisory	UNR	14 hr
Oct 4, 3:53 AM MDT	Wind Advisory	UNR	16 hr
Oct 8, 2:31 PM MDT	Freeze Warning	UNR	12 hr
Oct 22, 3:41 AM MDT	Wind Advisory	UNR	14 hr
Oct 25, 2:31 PM MDT	High Wind Watch	UNR	12 hr
Oct 26, 2:30 AM MDT	High Wind Warning	UNR	16 hr
Nov 4, 2:35 AM MST	Winter Storm Watch	UNR	32 hr
Nov 5, 2:25 AM MST	Blizzard Warning	UNR	57 hr
Nov 5, 2:25 AM MST	Winter Storm Warning	UNR	39 hr
Nov 6, 5:32 PM MST	Mesoscale Discussion	SPC	4 hr
Nov 12, 3:24 AM MST	High Wind Watch	UNR	35 hr
Nov 13, 2:26 PM MST	High Wind Warning	UNR	27 hr
Nov 13, 2:26 PM MST	Wind Advisory	UNR	27 hr
Nov 14, 1:17 PM MST	Mesoscale Discussion	SPC	58 min
Nov 29, 2:18 PM MST	Wind Advisory	UNR	24 hr
Dec 2, 4:05 AM MST	Winter Weather Advisory	UNR	23 hr
Dec 7, 3:12 PM MST	Winter Weather Advisory	UNR	23 hr
Dec 12, 4:27 AM MST	Blizzard Watch	UNR	23 hr
Dec 13, 3:56 AM MST	Blizzard Warning	UNR	33 hr
Dec 14, 8:53 AM MST	Wind Chill Warning	UNR	26 hr
Dec 15, 10:59 AM MST	Wind Chill Advisory	UNR	9 hr
Dec 19, 2:34 PM MST	Wind Chill Warning	UNR	44 hr
Dec 19, 2:34 PM MST	Wind Chill Advisory	UNR	26 hr
Dec 21, 2:05 PM MST	Wind Chill Advisory	UNR	20 hr
Dec 25, 12:55 PM MST	Winter Weather Advisory	UNR	23 hr
Dec 29, 12:56 PM MST	High Wind Watch	UNR	7 hr
Dec 29, 8:05 PM MST	High Wind Warning	UNR	20 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	27
Tornado Warning	1
Severe Thunderstorm Watch	15
Tornado Watch	5
Mesoscale Discussion	40
Flooding
Areal Flood Warning	2
Flash Flood Watch	2
Flood Watch	3
Areal Flood Advisory	2
Winter
Blizzard Warning	2
Winter Storm Warning	3
Blizzard Watch	1
Winter Storm Watch	4
Blowing Snow Advisory	1
Snow Advisory	1
Snow and Blowing Snow Advisory	1
Winter Weather Advisory	8
Cold
Freeze Warning	1
Wind Chill Warning	2
Frost Advisory	1
Wind Chill Advisory	5
Wind and dust
High Wind Warning	3
High Wind Watch	3
Wind Advisory	17

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.