Alert archive / California / Dense Fog Advisories in 2021
Dense Fog Advisory 11, NWS San Diego, CA
NWS San Diego, CA issued this dense fog advisory at Nov 19, 2021, 4:00 AM PST for Riverside County, San Bernardino County, San Diego County, California. It was in force for 5 hr.
The area
The counties it named.
The facts
- Issued
- Nov 19, 2021, 4:00 AM PST (12:00 UTC)
- Expired
- Nov 19, 2021, 9:00 AM PST
- In force
- 5 hr
- Issued by
- NWS San Diego, CA
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 12:00 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.
What forecasters said that day
The local office's own words before this dense fog advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS San Diego, CA wrote its last area forecast discussion before this dense fog advisory went out at Nov 19, 3:45 AM PST, 15 minutes earlier.
Area forecast discussion, Nov 19, 3:45 AM PST, 15 minutes before
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</html>The office that day
Everything else NWS San Diego, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 19, 10:48 AM PST | Fire Weather Watch | SGX | Orange, Riverside, San Bernardino, San Diego | 3 hr |
| Nov 19, 1:35 PM PST | Red Flag Warning | SGX | Orange, Riverside, San Bernardino, San Diego | 53 hr |
Nearby
Dense Fog Advisories in California, 2021Every dense fog advisory in 2021
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.