Alert archive / Iowa / Dense Fog Advisories

Dense Fog Advisories in Iowa, 2011

39 dense fog advisories in 2011. An alert counts here when it covered any part of the state, so the counties below add up to more than the state. The archive of dense fog advisories reaches back to 2005.

Dense Fog Advisories by county

Each county as a circle sized by its count in 2011. Tap one for its archive.

Dense Fog Advisories: 39
Busiest month: February9 dense fog advisories
Busiest day: February 16, 20116 dense fog advisories

Over time

By month

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
Jan 28, 9:09 AM CST	Dense Fog Advisory	FSD	Lyon, Plymouth, Sioux, Woodbury	3 hr
Jan 28, 9:29 AM CST	Dense Fog Advisory	DMX	Adair, Adams, Audubon, Carroll, Cass, Clarke and 7 more	3 hr
Feb 15, 11:56 PM CST	Dense Fog Advisory	OAX	Fremont, Mills, Montgomery, Page, Pottawattamie, Shelby	10 hr
Feb 16, 12:59 AM CST	Dense Fog Advisory	DMX	Adair, Adams, Appanoose, Audubon, Cass, Clarke and 18 more	9 hr
Feb 16, 5:00 AM CST	Dense Fog Advisory	DVN	Benton, Buchanan, Cedar, Clinton, Delaware, Des Moines and 15 more	8 hr
Feb 16, 9:24 AM CST	Dense Fog Advisory	ARX	Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more	30 hr
Feb 16, 10:28 AM CST	Dense Fog Advisory	OAX	Fremont, Mills, Montgomery, Page	92 min
Feb 16, 5:55 PM CST	Dense Fog Advisory	FSD	Buena Vista, Cherokee, Clay, Dickinson, Ida, Lyon and 5 more	16 hr
Feb 16, 6:00 PM CST	Dense Fog Advisory	DMX	Adair, Adams, Appanoose, Audubon, Black Hawk, Boone and 45 more	16 hr
Feb 16, 6:17 PM CST	Dense Fog Advisory	OAX	Fremont, Harrison, Mills, Monona, Montgomery, Page and 2 more	11 hr
Feb 16, 8:25 PM CST	Dense Fog Advisory	DVN	Benton, Buchanan, Cedar, Clinton, Delaware, Dubuque and 7 more	6 hr
Mar 10, 3:56 AM CST	Dense Fog Advisory	FSD	Buena Vista, Cherokee, Lyon, O'Brien, Osceola, Plymouth and 1 more	7 hr
Mar 10, 11:50 PM CST	Dense Fog Advisory	ARX	Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more	9 hr
Mar 11, 3:29 AM CST	Dense Fog Advisory	DVN	Benton, Buchanan, Cedar, Delaware, Des Moines, Dubuque and 12 more	7 hr
Mar 14, 9:18 AM CDT	Dense Fog Advisory	FSD	Buena Vista, Cherokee, Clay, Dickinson, Ida, Lyon and 5 more	3 hr
Mar 19, 2:51 AM CDT	Dense Fog Advisory	FSD	Dickinson	7 hr
Mar 19, 3:19 AM CDT	Dense Fog Advisory	DMX	Cerro Gordo, Emmet, Franklin, Hancock, Humboldt, Kossuth and 5 more	7 hr
Mar 19, 3:27 AM CDT	Dense Fog Advisory	ARX	Floyd, Mitchell	6 hr
May 29, 5:05 AM CDT	Dense Fog Advisory	DVN	Benton, Buchanan, Cedar, Clinton, Delaware, Des Moines and 13 more	4 hr
Aug 6, 3:51 AM CDT	Dense Fog Advisory	OAX	Fremont, Harrison, Mills, Monona, Pottawattamie	5 hr
Aug 31, 3:45 AM CDT	Dense Fog Advisory	DMX	Audubon, Boone, Butler, Calhoun, Carroll, Cerro Gordo and 21 more	5 hr
Aug 31, 5:54 AM CDT	Dense Fog Advisory	OAX	Harrison, Monona, Shelby	3 hr
Aug 31, 6:02 AM CDT	Dense Fog Advisory	FSD	Buena Vista, Cherokee, Clay, Dickinson, Ida, Lyon and 5 more	4 hr
Aug 31, 9:07 AM CDT	Dense Fog Advisory	DMX	Butler, Cerro Gordo, Emmet, Franklin, Grundy, Hancock and 8 more	108 min
Sep 18, 10:51 PM CDT	Dense Fog Advisory	OAX	Fremont, Harrison, Mills, Monona, Montgomery, Page and 2 more	10 hr
Sep 18, 10:54 PM CDT	Dense Fog Advisory	DMX	Adair, Adams, Audubon, Calhoun, Carroll, Cass and 13 more	10 hr
Sep 18, 11:04 PM CDT	Dense Fog Advisory	FSD	Buena Vista, Cherokee, Clay, Dickinson, Ida, O'Brien and 3 more	10 hr
Sep 28, 1:54 AM CDT	Dense Fog Advisory	ARX	Allamakee, Clayton, Fayette, Winneshiek	9 hr
Sep 28, 2:59 AM CDT	Dense Fog Advisory	DVN	Benton, Buchanan, Cedar, Clinton, Delaware, Dubuque and 7 more	8 hr
Oct 11, 2:28 AM CDT	Dense Fog Advisory	OAX	Fremont, Mills, Montgomery, Page, Pottawattamie, Shelby	6 hr
Oct 11, 3:06 AM CDT	Dense Fog Advisory	DMX	Adair, Adams, Audubon, Boone, Butler, Calhoun and 27 more	7 hr
Oct 11, 8:37 AM CDT	Dense Fog Advisory	OAX	Fremont, Mills, Montgomery, Page, Pottawattamie, Shelby	83 min
Oct 11, 10:11 AM CDT	Dense Fog Advisory	DMX	Adair, Adams, Boone, Cerro Gordo, Clarke, Dallas and 21 more	65 min
Nov 22, 10:28 PM CST	Dense Fog Advisory	FSD	Buena Vista, Cherokee, Clay, Dickinson, Ida, Lyon and 5 more	12 hr
Nov 23, 3:27 AM CST	Dense Fog Advisory	OAX	Fremont, Harrison, Mills, Monona, Pottawattamie	6 hr
Nov 23, 4:53 AM CST	Dense Fog Advisory	DVN	Des Moines, Henry, Jefferson, Keokuk, Lee, Louisa and 2 more	7 hr
Dec 14, 11:49 AM CST	Dense Fog Advisory	DVN	Benton, Buchanan, Delaware, Dubuque, Jackson, Jones and 1 more	2 hr
Dec 14, 3:03 PM CST	Dense Fog Advisory	ARX	Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more	8 hr
Dec 14, 3:16 PM CST	Dense Fog Advisory	DMX	Black Hawk, Boone, Bremer, Butler, Cerro Gordo, Franklin and 13 more	5 hr

By county

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

59 more counties

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record The radar archive 2010 2012

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.