Alert archive / California / Severe Thunderstorm Watches in 2005

Severe Thunderstorm Watch 27

February 21, 200517 counties in California

The Storm Prediction Center issued this severe thunderstorm watch at Feb 21, 2005, 3:30 PM PST for 17 counties in California. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued
Feb 21, 2005, 3:30 PM PST (23:30 UTC)
Expired
Feb 21, 2005, 10:00 PM PST
In force
7 hr
Issued by
the Storm Prediction Center

Counties Amador County, CA, Calaveras County, CA, Fresno County, CA, Kern County, CA, Kings County, CA, Los Angeles County, CA, Madera County, CA, Mariposa County, CA, Merced County, CA, Orange County, CA, Sacramento County, CA, San Diego County, CA, San Joaquin County, CA, Stanislaus County, CA, Tulare County, CA, Tuolumne County, CA, Yolo County, CA

The radar

The San Joaquin Valley radar (KHNX), 57 km from the middle of the area, began a volume at 23:33 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

Warnings issued inside it

5 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
Feb 21, 3:56 PM PSTSevere Thunderstorm WarningHNXFresno, Kings, Madera, Mariposa, Merced, Tulare49 min
Feb 21, 4:43 PM PSTSevere Thunderstorm WarningHNXFresno, Madera32 min
Feb 21, 4:50 PM PSTFlash Flood WarningLOXLos Angeles85 min
Feb 21, 6:15 PM PSTFlash Flood WarningLOXLos Angeles60 min
Feb 21, 7:03 PM PSTFlash Flood WarningLOXLos Angeles117 min

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Feb 21, 2:10 AM PSTMesoscale DiscussionSPCOrange3 hr
Feb 21, 6:38 AM PSTMesoscale DiscussionSPCLos Angeles, Orange, San Diego, Ventura2 hr
Feb 21, 7:40 AM PSTSevere Thunderstorm WatchSPCLos Angeles, Orange, San Diego, Ventura7 hr
Feb 21, 12:48 PM PSTMesoscale DiscussionSPCLos Angeles, Orange, Ventura87 min
Feb 21, 1:53 PM PSTMesoscale DiscussionSPCAlameda, Amador, Calaveras, Contra Costa, Fresno, Kings and 18 more2 hr

Nearby

Severe Thunderstorm Watches in California, 2005Every severe thunderstorm watch in 2005

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.