Alert archive / California / Flash Flood Watches in 2009

Flash Flood Watch 4, NWS San Diego, CA

August 21, 2009Riverside County, San Bernardino County, San Diego County, California

NWS San Diego, CA issued this flash flood watch at Aug 21, 2009, 1:33 PM PDT for Riverside County, San Bernardino County, San Diego County, California. It took effect at Aug 22, 2009, 11:00 AM PDT. It was in force for 8 hr.

The area

The counties it named.

The facts

Issued
Aug 21, 2009, 1:33 PM PDT (20:33 UTC)
In effect from
Aug 22, 2009, 11:00 AM PDT
Expired
Aug 22, 2009, 7:18 PM PDT
In force
8 hr
Issued by
NWS San Diego, CA
Flood severity
None

Counties Riverside County, CA, San Bernardino County, CA, San Diego County, CA

The radar

The Santa Ana Mts radar (KSOX), 122 km from the middle of the area, began a volume at 20:34 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.

Nearby

Flash Flood Watches in California, 2009Every flash flood watch in 2009

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.