Alert archive / California / Excessive Heat Warnings in 2017

Excessive Heat Warning 3, NWS San Diego, CA

July 31, 2017San Bernardino County, California

NWS San Diego, CA issued this excessive heat warning at Jul 31, 2017, 7:12 AM PDT for San Bernardino County, California. It took effect at Jul 31, 2017, 10:00 AM PDT. It was in force for 11 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jul 31, 2017, 7:12 AM PDT (14:12 UTC)
In effect from
Jul 31, 2017, 10:00 AM PDT
Expired
Jul 31, 2017, 9:02 PM PDT
In force
11 hr
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 14:15 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 Jul 31, 3:20 AM PDT, 3 hours 52 minutes earlier.

Area forecast discussion, Jul 31, 3:20 AM PDT, 3 hours 52 minutes before
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The office that day

Everything else NWS San Diego, CA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 31, 7:12 AM PDTHeat AdvisorySGXSan Bernardino20 hr

Nearby

Excessive Heat Warnings in California, 2017Every excessive heat warning in 2017

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.