Alert archive / South Dakota / Dewey County

Weather alerts in Dewey County, South Dakota, 2014

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

Dewey County and its neighbors

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

Alerts: 128
Warnings: 47
Watches: 13
Advisories: 45
Busiest month: June46 alerts
Busiest day: June 18, 201418 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 Dewey County in 2014 had a tornado report inside them.

Dewey County, 2014

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	1	0	100%	0
Severe thunderstorm warnings	30	16	47%	7	100%	25 min
Flash flood warnings	4	3	25%	0

Each office's whole area, 2014

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Aberdeen, SD: tornado warnings	15	8	47%	15	73%	12 min
NWS Aberdeen, SD: severe thunderstorm warnings	141	78	45%	133	75%	19 min
NWS Aberdeen, SD: flash flood warnings	31	22	29%	35	97%	104 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, 2:57 AM MST	Winter Weather Advisory	ABR	29 hr
Jan 4, 3:12 AM MST	Wind Chill Warning	ABR	72 hr
Jan 13, 2:36 AM MST	Wind Advisory	ABR	31 hr
Jan 14, 1:58 PM MST	High Wind Watch	ABR	13 hr
Jan 15, 2:52 AM MST	High Wind Warning	ABR	38 hr
Jan 17, 9:27 AM MST	Wind Advisory	ABR	25 hr
Jan 19, 11:30 AM MST	Wind Advisory	ABR	3 hr
Jan 20, 2:59 AM MST	Wind Advisory	ABR	5 hr
Jan 20, 8:07 AM MST	High Wind Warning	ABR	6 hr
Jan 20, 11:06 AM MST	Wind Advisory	ABR	3 hr
Jan 21, 11:46 AM MST	Wind Advisory	ABR	5 hr
Jan 21, 5:12 PM MST	Wind Advisory	ABR	116 min
Jan 24, 3:22 AM MST	Wind Advisory	ABR	19 hr
Jan 25, 3:24 AM MST	High Wind Watch	ABR	6 hr
Jan 25, 9:38 AM MST	High Wind Warning	ABR	34 hr
Jan 26, 1:33 PM MST	Wind Chill Advisory	ABR	45 hr
Feb 4, 1:50 PM MST	Wind Chill Advisory	ABR	44 hr
Feb 6, 1:51 PM MST	Wind Chill Advisory	ABR	19 hr
Feb 12, 1:48 PM MST	Winter Weather Advisory	ABR	21 hr
Feb 13, 2:02 AM MST	Wind Advisory	ABR	6 hr
Feb 18, 2:47 AM MST	Wind Advisory	ABR	14 hr
Feb 19, 2:44 PM MST	Wind Advisory	ABR	26 hr
Feb 24, 2:32 AM MST	Wind Chill Advisory	ABR	30 hr
Feb 24, 9:44 AM MST	Winter Weather Advisory	ABR	8 hr
Feb 28, 5:45 AM MST	Wind Advisory	ABR	9 hr
Feb 28, 3:02 PM MST	Wind Chill Advisory	ABR	44 hr
Mar 2, 2:44 PM MST	Wind Chill Advisory	ABR	18 hr
Mar 10, 2:09 PM MDT	Winter Weather Advisory	ABR	18 hr
Mar 11, 1:46 PM MDT	River Flood Warning	ABR	67 hr
Mar 29, 3:26 AM MDT	Blizzard Watch	ABR	48 hr
Mar 29, 3:26 AM MDT	Winter Storm Watch	ABR	24 hr
Mar 30, 11:01 AM MDT	Blizzard Warning	ABR	42 hr
Apr 9, 3:41 PM MDT	Mesoscale Discussion	SPC	79 min
Apr 23, 3:12 AM MDT	Wind Advisory	ABR	15 hr
Apr 26, 9:35 AM MDT	Wind Advisory	ABR	32 hr
Apr 27, 12:58 AM MDT	Mesoscale Discussion	SPC	2 hr
May 11, 2:12 PM MDT	Wind Advisory	ABR	28 hr
May 13, 2:00 PM MDT	Frost Advisory	ABR	17 hr
May 14, 2:18 PM MDT	Freeze Warning	ABR	17 hr
May 25, 1:35 PM MDT	Mesoscale Discussion	SPC	85 min
May 27, 1:14 PM MDT	Mesoscale Discussion	SPC	2 hr
May 29, 2:45 PM MDT	Severe Thunderstorm Watch	SPC	6 hr
May 30, 1:56 PM MDT	Mesoscale Discussion	SPC	94 min
May 31, 12:50 PM MDT	Flash Flood Watch	ABR	31 hr
Jun 4, 8:09 PM MDT	Mesoscale Discussion	SPC	96 min
Jun 10, 8:41 PM MDT	Mesoscale Discussion	SPC	94 min
Jun 13, 2:56 AM MDT	Wind Advisory	ABR	12 hr
Jun 13, 8:11 PM MDT	Severe Thunderstorm Warning	ABR	64 min
Jun 13, 8:26 PM MDT	Mesoscale Discussion	SPC	94 min
Jun 13, 8:46 PM MDT	Severe Thunderstorm Warning	ABR	59 min
Jun 13, 9:11 PM MDT	Severe Thunderstorm Warning	ABR	49 min
Jun 16, 6:33 AM MDT	Mesoscale Discussion	SPC	57 min
Jun 18, 12:19 AM MDT	Mesoscale Discussion	SPC	56 min
Jun 18, 12:58 AM MDT	Severe Thunderstorm Warning	ABR	62 min
Jun 18, 1:33 AM MDT	Severe Thunderstorm Warning	ABR	57 min
Jun 18, 2:27 AM MDT	Severe Thunderstorm Warning	ABR	48 min
Jun 18, 2:30 AM MDT	Severe Thunderstorm Warning	ABR	60 min
Jun 18, 3:15 AM MDT	Severe Thunderstorm Warning	ABR	60 min
Jun 18, 3:29 AM MDT	Severe Thunderstorm Warning	ABR	61 min
Jun 18, 3:45 AM MDT	Mesoscale Discussion	SPC	90 min
Jun 18, 7:06 AM MDT	Severe Thunderstorm Warning	ABR	54 min
Jun 18, 7:58 AM MDT	Severe Thunderstorm Warning	ABR	62 min
Jun 18, 12:13 PM MDT	Mesoscale Discussion	SPC	92 min
Jun 18, 12:28 PM MDT	Severe Thunderstorm Warning	ABR	62 min
Jun 18, 12:28 PM MDT	Tornado Watch	SPC	9 hr
Jun 18, 12:57 PM MDT	Severe Thunderstorm Warning	ABR	63 min
Jun 18, 1:30 PM MDT	Severe Thunderstorm Warning	ABR	60 min
Jun 18, 2:14 PM MDT	Flash Flood Warning	ABR	6 hr
Jun 18, 3:36 PM MDT	Flash Flood Warning	ABR	6 hr
Jun 18, 4:26 PM MDT	Flash Flood Warning	ABR	6 hr
Jun 19, 1:37 PM MDT	Mesoscale Discussion	SPC	53 min
Jun 19, 2:18 PM MDT	Severe Thunderstorm Warning	ABR	42 min
Jun 20, 2:54 PM MDT	River Flood Warning	ABR	8 hr
Jun 20, 11:00 PM MDT	River Flood Warning	ABR	10 hr
Jun 21, 1:23 PM MDT	Mesoscale Discussion	SPC	67 min
Jun 21, 1:56 PM MDT	Severe Thunderstorm Watch	SPC	7 hr
Jun 21, 4:49 PM MDT	Mesoscale Discussion	SPC	86 min
Jun 21, 5:18 PM MDT	Severe Thunderstorm Warning	ABR	57 min
Jun 21, 5:47 PM MDT	Severe Thunderstorm Warning	ABR	58 min
Jun 21, 5:50 PM MDT	Severe Thunderstorm Warning	ABR	22 min
Jun 21, 6:17 PM MDT	Severe Thunderstorm Warning	ABR	58 min
Jun 21, 6:31 PM MDT	Severe Thunderstorm Warning	ABR	44 min
Jun 21, 6:34 PM MDT	Tornado Warning Tornado observed	ABR	18 min
Jun 21, 6:43 PM MDT	Severe Thunderstorm Warning	ABR	62 min
Jun 21, 6:59 PM MDT	Severe Thunderstorm Warning	ABR	45 min
Jun 21, 7:14 PM MDT	Mesoscale Discussion	SPC	91 min
Jun 25, 5:09 PM MDT	Severe Thunderstorm Warning	ABR	51 min
Jun 26, 6:44 PM MDT	Flash Flood Watch	ABR	31 hr
Jun 29, 2:18 AM MDT	Wind Advisory	ABR	15 hr
Jun 30, 2:33 AM MDT	Wind Advisory	ABR	16 hr
Jul 5, 4:03 PM MDT	Mesoscale Discussion	SPC	57 min
Jul 24, 8:50 PM MDT	Severe Thunderstorm Warning	ABR	40 min
Jul 24, 10:22 PM MDT	Severe Thunderstorm Warning	ABR	29 min
Aug 1, 4:09 PM MDT	Mesoscale Discussion	SPC	66 min
Aug 14, 7:03 PM MDT	Special Weather Statement	ABR	27 min
Aug 20, 2:42 PM MDT	Mesoscale Discussion	SPC	2 hr
Aug 20, 4:00 PM MDT	Severe Thunderstorm Watch	SPC	7 hr
Aug 20, 6:53 PM MDT	Mesoscale Discussion	SPC	97 min
Aug 20, 8:02 PM MDT	Severe Thunderstorm Warning	ABR	43 min
Aug 20, 8:11 PM MDT	Severe Thunderstorm Warning	ABR	49 min
Aug 20, 8:42 PM MDT	Severe Thunderstorm Warning	ABR	63 min
Aug 20, 9:46 PM MDT	Severe Thunderstorm Warning	ABR	23 min
Aug 20, 10:26 PM MDT	Flash Flood Warning	ABR	9 hr
Aug 22, 1:50 AM MDT	Special Weather Statement	ABR	25 min
Aug 22, 10:03 PM MDT	Flood Watch	ABR	22 hr
Aug 23, 3:28 AM MDT	Areal Flood Warning	ABR	12 hr
Aug 30, 6:27 PM MDT	Severe Thunderstorm Watch	SPC	4 hr
Aug 30, 10:00 PM MDT	Mesoscale Discussion	SPC	90 min
Sep 11, 1:46 PM MDT	Frost Advisory	ABR	18 hr
Sep 19, 1:10 AM MDT	Severe Thunderstorm Warning	ABR	31 min
Sep 24, 4:59 AM MDT	Dense Fog Advisory	ABR	3 hr
Oct 2, 2:26 PM MDT	Wind Advisory	ABR	27 hr
Oct 3, 3:41 AM MDT	Freeze Warning	ABR	28 hr
Oct 5, 2:45 AM MDT	Wind Advisory	ABR	11 hr
Oct 16, 2:50 AM MDT	Wind Advisory	ABR	15 hr
Oct 27, 1:58 AM MDT	Wind Advisory	ABR	17 hr
Oct 31, 3:05 AM MDT	Wind Advisory	ABR	15 hr
Nov 4, 2:23 PM MST	Wind Advisory	ABR	26 hr
Nov 7, 2:53 AM MST	Wind Advisory	ABR	20 hr
Nov 8, 2:27 PM MST	Winter Storm Watch	ABR	13 hr
Nov 9, 3:07 AM MST	Winter Storm Warning	ABR	34 hr
Nov 15, 2:25 PM MST	Winter Weather Advisory	ABR	30 hr
Nov 22, 2:39 PM MST	Wind Advisory	ABR	44 hr
Dec 7, 1:57 AM MST	Wind Advisory	ABR	16 hr
Dec 15, 2:24 AM MST	Freezing Rain Advisory	ABR	6 hr
Dec 22, 1:47 AM MST	Winter Weather Advisory	ABR	36 hr
Dec 29, 2:20 AM MST	Wind Chill Advisory	ABR	33 hr
Dec 30, 2:01 PM MST	Wind Chill Advisory	ABR	18 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	30
Tornado Warning	1
Severe Thunderstorm Watch	4
Tornado Watch	1
Mesoscale Discussion	21
Special Weather Statement	2
Flooding
Areal Flood Warning	1
Flash Flood Warning	4
River Flood Warning	3
Flash Flood Watch	2
Flood Watch	1
Winter
Blizzard Warning	1
Winter Storm Warning	1
Blizzard Watch	1
Winter Storm Watch	2
Freezing Rain Advisory	1
Winter Weather Advisory	6
Cold
Freeze Warning	2
Wind Chill Warning	1
Frost Advisory	2
Wind Chill Advisory	8
Wind and dust
High Wind Warning	3
High Wind Watch	2
Wind Advisory	27
Fog and smoke
Dense Fog Advisory	1

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.