Weather alerts in Iowa, December 2009

Weather alerts by county

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

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 6, 3:49 AM CST	Winter Weather Advisory	DMX	Adair, Audubon, Black Hawk, Boone, Bremer, Butler and 25 more	24 hr
Dec 6, 3:58 AM CST	Winter Weather Advisory	FSD	Ida, Woodbury	17 hr
Dec 6, 4:20 AM CST	Winter Storm Watch	OAX	Fremont, Harrison, Mills, Monona, Montgomery, Page and 2 more	35 hr
Dec 6, 4:20 AM CST	Winter Weather Advisory	OAX	Fremont, Harrison, Mills, Monona, Montgomery, Page and 2 more	23 hr
Dec 6, 3:11 PM CST	Blizzard Watch	ARX	Chickasaw, Fayette, Floyd, Howard, Mitchell, Winneshiek	25 hr
Dec 6, 3:11 PM CST	Winter Storm Watch	ARX	Allamakee, Clayton	25 hr
Dec 6, 3:14 PM CST	Winter Storm Watch	DVN	Benton, Buchanan, Cedar, Clinton, Delaware, Des Moines and 15 more	25 hr
Dec 6, 3:33 PM CST	Winter Storm Watch	FSD	Buena Vista, Cherokee, Clay, Dickinson, Ida, O'Brien and 3 more	23 hr
Dec 6, 3:34 PM CST	Winter Storm Watch	DMX	Adair, Adams, Appanoose, Audubon, Black Hawk, Boone and 45 more	24 hr
Dec 7, 3:39 AM CST	Winter Weather Advisory	FSD	Lyon, Osceola	49 hr
Dec 7, 3:46 AM CST	Blizzard Watch	DVN	Benton, Buchanan, Cedar, Clinton, Delaware, Des Moines and 15 more	34 hr
Dec 7, 4:04 AM CST	Winter Storm Warning	OAX	Fremont, Harrison, Mills, Monona, Montgomery, Page and 2 more	41 hr
Dec 7, 2:59 PM CST	Winter Storm Warning	FSD	Buena Vista, Cherokee, Clay, Dickinson, Ida, Lyon and 5 more	23 hr
Dec 7, 3:42 PM CST	Blizzard Watch	DMX	Adair, Adams, Appanoose, Audubon, Black Hawk, Boone and 45 more	19 hr
Dec 7, 3:42 PM CST	Winter Storm Warning	DMX	Adair, Adams, Appanoose, Audubon, Black Hawk, Boone and 45 more	29 hr
Dec 7, 3:45 PM CST	Winter Storm Warning	DVN	Benton, Buchanan, Cedar, Clinton, Delaware, Des Moines and 15 more	50 hr
Dec 7, 3:45 PM CST	Blizzard Watch	OAX	Fremont, Harrison, Mills, Monona, Montgomery, Page and 2 more	21 hr
Dec 7, 3:50 PM CST	Blizzard Warning	ARX	Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more	48 hr
Dec 7, 3:50 PM CST	Winter Storm Warning	ARX	Allamakee, Clayton	22 hr
Dec 8, 10:34 AM CST	Blizzard Warning	DMX	Adair, Adams, Appanoose, Audubon, Black Hawk, Boone and 45 more	31 hr
Dec 8, 11:22 AM CST	Mesoscale Discussion	SPC	Adair, Adams, Appanoose, Audubon, Benton, Black Hawk and 73 more	5 hr
Dec 8, 12:55 PM CST	Blizzard Warning	OAX	Fremont, Harrison, Mills, Monona, Montgomery, Page and 2 more	17 hr
Dec 8, 1:33 PM CST	Blizzard Warning	FSD	Buena Vista, Cherokee, Clay, Dickinson, Ida, Lyon and 5 more	25 hr
Dec 8, 1:55 PM CST	Blizzard Warning	DVN	Benton, Buchanan, Cedar, Clinton, Delaware, Des Moines and 15 more	28 hr
Dec 8, 2:31 PM CST	Special Weather Statement	DVN	Des Moines, Henry, Jefferson, Keokuk, Lee, Louisa and 2 more	3 hr
Dec 8, 3:53 PM CST	Special Weather Statement	DVN	Des Moines, Henry, Jefferson, Keokuk, Lee, Louisa and 2 more	2 hr
Dec 8, 6:00 PM CST	Mesoscale Discussion	SPC	Adair, Adams, Allamakee, Appanoose, Audubon, Benton and 73 more	5 hr
Dec 8, 9:38 PM CST	Mesoscale Discussion	SPC	Adair, Adams, Allamakee, Appanoose, Audubon, Benton and 78 more	6 hr
Dec 9, 4:10 AM CST	Wind Chill Advisory	FSD	Buena Vista, Cherokee, Clay, Dickinson, Ida, Lyon and 5 more	30 hr
Dec 9, 5:42 AM CST	Winter Weather Advisory	OAX	Fremont, Harrison, Mills, Monona, Montgomery, Page and 2 more	10 hr
Dec 9, 10:22 AM CST	Mesoscale Discussion	SPC	Allamakee, Benton, Black Hawk, Boone, Bremer, Buchanan and 61 more	4 hr
Dec 9, 3:29 PM CST	Wind Chill Advisory	DMX	Adair, Adams, Appanoose, Audubon, Black Hawk, Boone and 45 more	21 hr
Dec 9, 3:29 PM CST	Winter Weather Advisory	DMX	Adair, Adams, Appanoose, Audubon, Black Hawk, Boone and 45 more	6 hr
Dec 9, 3:34 PM CST	Wind Chill Advisory	ARX	Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more	19 hr
Dec 9, 3:34 PM CST	Winter Weather Advisory	ARX	Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more	8 hr
Dec 9, 3:34 PM CST	Wind Chill Advisory	OAX	Fremont, Harrison, Mills, Monona, Montgomery, Page and 2 more	18 hr
Dec 9, 3:41 PM CST	Winter Weather Advisory	DVN	Benton, Buchanan, Cedar, Clinton, Delaware, Des Moines and 15 more	12 hr
Dec 10, 3:16 AM CST	Wind Chill Advisory	DVN	Benton, Buchanan, Cedar, Clinton, Delaware, Des Moines and 15 more	9 hr
Dec 12, 2:52 PM CST	Freezing Rain Advisory	DVN	Benton, Buchanan, Cedar, Clinton, Delaware, Dubuque and 10 more	17 hr
Dec 12, 2:58 PM CST	Freezing Rain Advisory	ARX	Clayton	12 hr
Dec 13, 3:20 AM CST	Winter Weather Advisory	ARX	Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more	33 hr
Dec 13, 4:28 AM CST	Freezing Fog Advisory	OAX	Fremont, Mills, Montgomery, Page	5 hr
Dec 13, 8:17 PM CST	Winter Weather Advisory	OAX	Fremont, Harrison, Mills, Monona, Montgomery, Page and 2 more	13 hr
Dec 13, 9:08 PM CST	Winter Weather Advisory	DMX	Adair, Adams, Audubon, Black Hawk, Boone, Bremer and 36 more	15 hr
Dec 13, 10:49 PM CST	Winter Weather Advisory	FSD	Buena Vista, Cherokee, Clay, Dickinson, Ida, O'Brien and 2 more	5 hr
Dec 14, 2:06 AM CST	Winter Weather Advisory	DVN	Benton, Buchanan, Delaware, Dubuque, Iowa, Johnson and 2 more	10 hr
Dec 14, 3:32 AM CST	Dense Fog Advisory	DVN	Cedar, Clinton, Des Moines, Henry, Jackson, Jefferson and 7 more	8 hr
Dec 14, 3:42 AM CST	Dense Fog Advisory	DMX	Appanoose, Clarke, Davis, Decatur, Lucas, Mahaska and 3 more	5 hr
Dec 14, 2:56 PM CST	Wind Chill Advisory	FSD	Buena Vista, Clay, Dickinson, Osceola	18 hr
Dec 14, 3:19 PM CST	Wind Chill Advisory	ARX	Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more	20 hr
Dec 14, 3:25 PM CST	Wind Chill Advisory	DVN	Benton, Buchanan, Cedar, Clinton, Delaware, Dubuque and 5 more	20 hr
Dec 14, 3:30 PM CST	Wind Chill Advisory	DMX	Audubon, Black Hawk, Boone, Bremer, Butler, Calhoun and 23 more	19 hr
Dec 21, 4:01 AM CST	Winter Storm Watch	OAX	Fremont, Harrison, Mills, Monona, Montgomery, Page and 2 more	60 hr
Dec 21, 2:02 PM CST	Winter Storm Watch	FSD	Buena Vista, Cherokee, Clay, Dickinson, Ida, Lyon and 5 more	24 hr
Dec 21, 2:57 PM CST	Winter Weather Advisory	ARX	Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more	18 hr
Dec 21, 3:18 PM CST	Winter Storm Watch	DVN	Benton, Buchanan, Cedar, Clinton, Delaware, Dubuque and 11 more	3 days
Dec 21, 3:34 PM CST	Winter Storm Watch	ARX	Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more	36 hr
Dec 21, 3:44 PM CST	Winter Storm Watch	DMX	Adair, Adams, Audubon, Black Hawk, Boone, Bremer and 36 more	60 hr
Dec 21, 3:44 PM CST	Winter Weather Advisory	DMX	Bremer, Butler, Calhoun, Carroll, Cerro Gordo, Crawford and 14 more	13 hr
Dec 21, 4:39 PM CST	Freezing Rain Advisory	FSD	Buena Vista, Cherokee, Clay, Dickinson, Ida, Lyon and 5 more	3 hr
Dec 22, 4:30 AM CST	Winter Storm Warning	FSD	Buena Vista, Cherokee, Clay, Dickinson, Ida, Lyon and 5 more	4 days
Dec 22, 12:45 PM CST	Freezing Rain Advisory	DMX	Adair, Adams, Audubon, Black Hawk, Boone, Bremer and 37 more	16 hr
Dec 22, 3:47 PM CST	Flood Watch	DVN	Benton, Buchanan, Cedar, Clinton, Delaware, Des Moines and 15 more	62 hr
Dec 22, 3:47 PM CST	Winter Storm Warning	OAX	Fremont, Harrison, Mills, Monona, Montgomery, Page and 2 more	56 hr
Dec 22, 3:47 PM CST	Winter Weather Advisory	OAX	Fremont, Harrison, Mills, Monona, Montgomery, Page and 2 more	32 hr
Dec 22, 4:07 PM CST	Winter Weather Advisory	DVN	Benton, Buchanan, Cedar, Clinton, Delaware, Dubuque and 7 more	36 hr
Dec 22, 7:57 PM CST	Freezing Rain Advisory	ARX	Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more	19 hr
Dec 23, 3:58 AM CST	Winter Storm Warning	ARX	Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more	48 hr
Dec 23, 4:48 AM CST	Winter Weather Advisory	FSD	Buena Vista, Cherokee, Clay, Dickinson, Ida, Lyon and 5 more	13 hr
Dec 23, 5:07 AM CST	Winter Storm Warning	DMX	Adair, Adams, Audubon, Black Hawk, Boone, Bremer and 36 more	71 hr
Dec 23, 5:07 AM CST	Winter Weather Advisory	DMX	Adair, Adams, Audubon, Black Hawk, Boone, Bremer and 37 more	23 hr
Dec 23, 6:44 AM CST	Mesoscale Discussion	SPC	Adair, Adams, Audubon, Boone, Cass, Cedar and 25 more	4 hr
Dec 23, 12:21 PM CST	Mesoscale Discussion	SPC	Audubon, Benton, Black Hawk, Boone, Buchanan, Buena Vista and 26 more	4 hr
Dec 23, 1:26 PM CST	River Flood Warning	DMX	Lucas, Wayne	30 hr
Dec 23, 3:58 PM CST	Flood Watch	DMX	Appanoose, Black Hawk, Clarke, Davis, Decatur, Jasper and 11 more	12 hr
Dec 23, 6:41 PM CST	Mesoscale Discussion	SPC	Clayton, Clinton, Dubuque, Jackson	4 hr
Dec 24, 4:11 AM CST	Winter Storm Watch	DMX	Appanoose, Davis, Lucas, Mahaska, Marion, Monroe and 3 more	12 hr
Dec 24, 11:57 AM CST	Winter Weather Advisory	ARX	Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more	27 hr
Dec 24, 1:32 PM CST	Mesoscale Discussion	SPC	Adair, Adams, Cass, Decatur, Fremont, Mills and 6 more	4 hr
Dec 24, 3:31 PM CST	Blizzard Warning	FSD	Lyon, Plymouth, Sioux, Woodbury	44 hr
Dec 24, 3:45 PM CST	Winter Weather Advisory	DMX	Adair, Adams, Appanoose, Black Hawk, Boone, Bremer and 37 more	36 hr
Dec 24, 4:00 PM CST	Blizzard Warning	OAX	Fremont, Harrison, Mills, Monona, Montgomery, Page and 2 more	44 hr
Dec 24, 7:56 PM CST	River Flood Warning	DVN	Clinton, Scott	3 days
Dec 24, 11:54 PM CST	Mesoscale Discussion	SPC	Taylor	4 hr
Dec 25, 1:31 AM CST	River Flood Warning	DMX	Lucas, Wayne	34 hr
Dec 25, 6:42 AM CST	River Flood Warning	DMX	Mahaska, Marion	25 hr
Dec 25, 10:10 AM CST	River Flood Warning	DVN	Iowa, Johnson	24 hr
Dec 25, 10:10 AM CST	River Flood Warning	DVN	Johnson, Washington	42 hr
Dec 25, 3:26 PM CST	Winter Weather Advisory	OAX	Fremont, Harrison, Mills, Monona, Montgomery, Page and 2 more	39 hr
Dec 26, 3:56 AM CST	Winter Weather Advisory	FSD	Buena Vista, Cherokee, Clay, Dickinson, Ida, Lyon and 5 more	20 hr
Dec 26, 9:16 AM CST	River Flood Warning	DVN	Des Moines, Henry, Lee	26 hr
Dec 26, 3:06 PM CST	River Flood Warning	DVN	Louisa	5 hr
Dec 27, 2:30 AM CST	Winter Weather Advisory	DVN	Des Moines, Henry, Jefferson, Lee, Van Buren	12 hr
Dec 27, 3:52 AM CST	River Flood Warning	DVN	Iowa, Johnson	31 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	9
Special Weather Statement	2
Flooding
River Flood Warning	9
Flood Watch	2
Winter
Blizzard Warning	7
Winter Storm Warning	9
Blizzard Watch	4
Winter Storm Watch	11
Freezing Rain Advisory	5
Winter Weather Advisory	24
Cold
Wind Chill Advisory	9
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.

59 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. Rebuilt daily.