Alert archive / Utah / 2009

Weather alerts in Utah, December 2009

33 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: 33
Warnings: 9
Watches: 7
Advisories: 16
Busiest day: December 5, 20095 alerts

Over time

By day

Days in UTC, the clock the archive keeps.

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	Counties	Lasted
Dec 4, 3:26 PM MST	Winter Weather Advisory	GJT	Daggett, Uintah	61 hr
Dec 5, 4:26 AM MST	Blizzard Watch	GJT	Grand, San Juan	12 hr
Dec 5, 4:26 AM MST	Winter Storm Watch	GJT	Daggett, Grand, San Juan, Uintah	45 hr
Dec 5, 10:40 AM MST	Winter Weather Advisory	SLC		24 hr
Dec 5, 3:47 PM MST	Winter Storm Watch	SLC		24 hr
Dec 5, 4:07 PM MST	Blizzard Warning	GJT	Grand, San Juan	71 hr
Dec 6, 2:20 PM MST	Winter Storm Warning	GJT	Daggett, Grand, San Juan, Uintah	49 hr
Dec 6, 2:20 PM MST	Winter Weather Advisory	GJT	Daggett, Uintah	11 hr
Dec 6, 4:04 PM MST	Winter Storm Warning	SLC		47 hr
Dec 6, 4:04 PM MST	Winter Weather Advisory	SLC		44 hr
Dec 7, 12:00 PM MST	Mesoscale Discussion	SPC	Washington	5 hr
Dec 11, 4:37 AM MST	Winter Storm Watch	SLC		25 hr
Dec 11, 3:06 PM MST	Winter Storm Watch	GJT	Grand, San Juan, Uintah	13 hr
Dec 11, 3:42 PM MST	Winter Storm Warning	SLC		63 hr
Dec 12, 4:05 AM MST	Winter Storm Warning	GJT	Grand, Uintah	53 hr
Dec 12, 4:05 AM MST	Winter Weather Advisory	GJT	Daggett, Grand, San Juan, Uintah	53 hr
Dec 12, 3:29 PM MST	Winter Weather Advisory	SLC		24 hr
Dec 17, 9:40 PM MST	Dense Fog Advisory	GJT	Grand, Uintah	13 hr
Dec 18, 8:21 PM MST	Dense Fog Advisory	GJT	Grand, Uintah	15 hr
Dec 19, 10:32 PM MST	Dense Fog Advisory	SLC		10 hr
Dec 21, 3:05 AM MST	Winter Storm Watch	GJT	Grand, San Juan	12 hr
Dec 21, 4:43 AM MST	Winter Storm Watch	SLC		24 hr
Dec 21, 3:08 PM MST	Winter Weather Advisory	GJT	Daggett, Grand, San Juan, Uintah	63 hr
Dec 21, 4:37 PM MST	Winter Storm Warning	SLC		40 hr
Dec 21, 10:39 PM MST	Winter Storm Warning	GJT	Grand, San Juan	37 hr
Dec 22, 12:03 AM MST	Dense Fog Advisory	SLC		9 hr
Dec 22, 5:00 AM MST	Winter Weather Advisory	SLC		28 hr
Dec 23, 3:57 AM MST	Dense Fog Advisory	GJT	Grand	6 hr
Dec 25, 12:47 AM MST	Dense Fog Advisory	SLC		10 hr
Dec 29, 3:13 PM MST	Winter Weather Advisory	GJT	Grand, San Juan	37 hr
Dec 29, 4:01 PM MST	Winter Weather Advisory	SLC		31 hr
Dec 30, 4:16 AM MST	Winter Storm Warning	GJT	Grand, San Juan	24 hr
Dec 30, 4:54 AM MST	Winter Storm Warning	SLC		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
Mesoscale Discussion	1
Winter
Blizzard Warning	1
Winter Storm Warning	8
Blizzard Watch	1
Winter Storm Watch	6
Winter Weather Advisory	10
Fog and smoke
Dense Fog Advisory	6

By county

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

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.