Alert archive / California / Excessive Heat Watches in 2021

Excessive Heat Watch 6, NWS San Diego, CA

August 12, 2021San Bernardino County, California

NWS San Diego, CA issued this excessive heat watch at Aug 12, 2021, 10:32 AM PDT for San Bernardino County, California. It took effect at Aug 14, 2021, 10:00 AM PDT. It was in force for .

The area

The counties it named.

The facts

Issued
Aug 12, 2021, 10:32 AM PDT (17:32 UTC)
In effect from
Aug 14, 2021, 10:00 AM PDT
Expired
Aug 13, 2021, 1:47 PM PDT
In force
Issued by
NWS San Diego, CA

County San Bernardino County, CA

The radar

The Edwards AFB radar (KEYX), 129 km from the middle of the area, began a volume at 17:30 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 excessive heat watch 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 excessive heat watch went out at Aug 12, 9:30 AM PDT, 1 hour 2 minutes earlier.

Area forecast discussion, Aug 12, 9:30 AM PDT, 1 hour 2 minutes before
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Nearby

Excessive Heat Watches in California, 2021Every excessive heat watch 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.