Alert archive / California / Excessive Heat Warnings in 2020

Excessive Heat Warning 2, NWS San Diego, CA

May 4, 2020Riverside County, San Diego County, California

NWS San Diego, CA issued this excessive heat warning at May 4, 2020, 1:20 PM PDT for Riverside County, San Diego County, California. It took effect at May 5, 2020, 10:00 AM PDT. It was in force for 3 days. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
May 4, 2020, 1:20 PM PDT (20:20 UTC)
In effect from
May 5, 2020, 10:00 AM PDT
Expired
May 8, 2020, 9:00 PM PDT
In force
3 days
Issued by
NWS San Diego, CA

Counties Riverside County, CA, San Diego County, CA

The radar

The San Diego radar (KNKX), 80 km from the middle of the area, began a volume at 20:18 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 warning 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 warning went out at May 4, 8:52 AM PDT, 4 hours 28 minutes earlier.

Area forecast discussion, May 4, 8:52 AM PDT, 4 hours 28 minutes before
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Nearby

Excessive Heat Warnings in California, 2020Every excessive heat warning in 2020

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.