Weather alerts in South Dakota, December 2009

40 weather alerts in December 2009, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered any part of the state, so the counties below add up to more than the state.

Weather alerts by county

Each county as a circle sized by its count in December 2009. Tap one for its archive.

Alerts: 40
Warnings: 8
Watches: 4
Advisories: 26
Busiest day: December 22, 20098 alerts

Over time

By day

Days in UTC, the clock the archive keeps.

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	Counties	Lasted
Dec 1, 3:00 AM CST	Wind Advisory	FSD	Aurora, Beadle, Brule, Charles Mix, Davison, Douglas and 6 more	15 hr
Dec 1, 3:46 AM CST	Wind Advisory	ABR	Brown, Buffalo, Campbell, Clark, Codington, Corson and 20 more	14 hr
Dec 6, 3:33 PM CST	Winter Storm Watch	FSD	Clay, Union	23 hr
Dec 7, 3:39 AM CST	Winter Weather Advisory	FSD	Aurora, Beadle, Bon Homme, Brookings, Brule, Charles Mix and 16 more	49 hr
Dec 7, 2:59 PM CST	Winter Storm Warning	FSD	Clay, Union	23 hr
Dec 7, 4:23 PM CST	Winter Weather Advisory	UNR	Bennett, Jackson, Mellette, Oglala Lakota, Todd, Tripp	36 hr
Dec 8, 3:34 AM CST	Winter Weather Advisory	ABR	Buffalo, Clark, Codington, Deuel, Grant, Hamlin and 5 more	25 hr
Dec 8, 1:33 PM CST	Blizzard Warning	FSD	Clay, Union	25 hr
Dec 8, 3:30 PM CST	Wind Chill Advisory	ABR	Brown, Buffalo, Campbell, Clark, Codington, Corson and 20 more	43 hr
Dec 8, 3:33 PM CST	Wind Chill Advisory	UNR	Bennett, Butte, Custer, Fall River, Haakon, Harding and 10 more	21 hr
Dec 8, 9:38 PM CST	Mesoscale Discussion	SPC	Clay, Lincoln, Union, Yankton	6 hr
Dec 9, 4:10 AM CST	Wind Chill Advisory	FSD	Aurora, Beadle, Bon Homme, Brookings, Brule, Charles Mix and 18 more	30 hr
Dec 9, 3:55 PM CST	Wind Chill Advisory	UNR	Bennett, Butte, Custer, Fall River, Haakon, Harding and 10 more	13 hr
Dec 13, 4:02 AM CST	Wind Chill Advisory	ABR	Brown, Buffalo, Campbell, Clark, Codington, Corson and 17 more	8 hr
Dec 13, 6:13 AM CST	Wind Chill Advisory	FSD	Aurora, Beadle, Brookings, Brule, Davison, Jerauld and 5 more	4 hr
Dec 13, 6:19 PM CST	Winter Weather Advisory	ABR	Clark, Codington, Deuel, Faulk, Grant, Hamlin and 8 more	8 hr
Dec 14, 2:56 PM CST	Wind Chill Advisory	FSD	Beadle, Brookings, Jerauld, Kingsbury, Lake, Miner and 2 more	18 hr
Dec 14, 3:52 PM CST	Wind Chill Advisory	ABR	Brown, Buffalo, Campbell, Clark, Codington, Corson and 17 more	19 hr
Dec 14, 4:40 PM CST	Wind Chill Advisory	UNR	Butte, Harding, Meade, Perkins, Ziebach	17 hr
Dec 21, 2:02 PM CST	Winter Storm Watch	FSD	Aurora, Beadle, Bon Homme, Brookings, Brule, Charles Mix and 18 more	24 hr
Dec 21, 2:16 PM CST	Winter Storm Watch	ABR	Brown, Buffalo, Campbell, Clark, Codington, Corson and 20 more	14 hr
Dec 21, 2:28 PM CST	Winter Storm Watch	UNR	Bennett, Butte, Custer, Fall River, Haakon, Harding and 10 more	39 hr
Dec 21, 4:39 PM CST	Freezing Rain Advisory	FSD	Aurora, Davison, Douglas, Hanson, Hutchinson, Lincoln and 3 more	3 hr
Dec 21, 9:01 PM CST	Winter Weather Advisory	FSD	Minnehaha, Moody	5 hr
Dec 21, 9:45 PM CST	Dense Fog Advisory	UNR	Bennett, Custer, Haakon, Jackson, Meade, Mellette and 6 more	10 hr
Dec 21, 9:48 PM CST	Dense Fog Advisory	FSD	Aurora, Brule, Charles Mix, Douglas, Gregory, Jerauld	4 hr
Dec 22, 3:58 AM CST	Winter Storm Warning	ABR	Brown, Buffalo, Campbell, Clark, Codington, Corson and 20 more	55 hr
Dec 22, 4:30 AM CST	Winter Storm Warning	FSD	Aurora, Beadle, Bon Homme, Brookings, Brule, Charles Mix and 18 more	4 days
Dec 22, 5:23 AM CST	Winter Storm Warning	UNR	Bennett, Butte, Custer, Haakon, Harding, Jackson and 9 more	5 days
Dec 22, 1:36 PM CST	Winter Weather Advisory	UNR	Butte, Custer, Fall River, Harding, Lawrence, Meade and 3 more	4 days
Dec 22, 1:49 PM CST	Freezing Fog Advisory	UNR	Custer, Lawrence, Meade, Pennington	16 hr
Dec 23, 4:48 AM CST	Winter Weather Advisory	FSD	Aurora, Beadle, Bon Homme, Brookings, Brule, Charles Mix and 18 more	13 hr
Dec 24, 10:45 AM CST	Blizzard Warning	ABR	Brown, Buffalo, Campbell, Clark, Codington, Corson and 20 more	55 hr
Dec 24, 3:31 PM CST	Blizzard Warning	FSD	Aurora, Beadle, Bon Homme, Brookings, Brule, Charles Mix and 18 more	44 hr
Dec 24, 3:33 PM CST	Blizzard Warning	UNR	Bennett, Butte, Custer, Haakon, Harding, Jackson and 9 more	56 hr
Dec 25, 7:21 AM CST	Mesoscale Discussion	SPC	Aurora, Beadle, Bennett, Bon Homme, Brule, Buffalo and 35 more	5 hr
Dec 26, 3:56 AM CST	Winter Weather Advisory	FSD	Aurora, Beadle, Bon Homme, Brookings, Brule, Charles Mix and 18 more	20 hr
Dec 26, 11:54 AM CST	Winter Weather Advisory	ABR	Brown, Buffalo, Campbell, Clark, Codington, Corson and 20 more	12 hr
Dec 26, 11:25 PM CST	Winter Weather Advisory	UNR	Bennett, Butte, Custer, Haakon, Harding, Jackson and 9 more	4 hr
Dec 27, 9:47 AM CST	Freezing Rain Advisory	ABR	Jones, Lyman	7 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
Mesoscale Discussion	2
Winter
Blizzard Warning	4
Winter Storm Warning	4
Winter Storm Watch	4
Freezing Rain Advisory	2
Winter Weather Advisory	10
Cold
Wind Chill Advisory	9
Wind and dust
Wind Advisory	2
Fog and smoke
Dense Fog Advisory	2
Freezing Fog Advisory	1

By county

Every county with at least one alert. A county page lists each alert that covered it.

26 more counties

Nearby

Alerts in force now Tornadoes on record The radar archive 2008 2010

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.