Alert archive / California / Excessive Heat Warnings in 2009

Excessive Heat Warning 1, NWS San Francisco Bay Area, CA

June 25, 2009Santa Clara County, California

NWS San Francisco Bay Area, CA issued this excessive heat warning at Jun 25, 2009, 2:27 PM PDT for Santa Clara County, California. It took effect at Jun 27, 2009, 11:00 AM PDT. It was in force for 33 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
Jun 25, 2009, 2:27 PM PDT (21:27 UTC)
In effect from
Jun 27, 2009, 11:00 AM PDT
Expired
Jun 28, 2009, 8:00 PM PDT
In force
33 hr
Issued by
NWS San Francisco Bay Area, CA

County Santa Clara County, CA

The radar

The San Francisco radar (KMUX), 20 km from the middle of the area, began a volume at 21:26 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 Francisco Bay Area, CA wrote its last area forecast discussion before this excessive heat warning went out at Jun 25, 10:49 AM PDT, 3 hours 38 minutes earlier.

Area forecast discussion, Jun 25, 10:49 AM PDT, 3 hours 38 minutes before
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The office that day

Everything else NWS San Francisco Bay Area, CA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 25, 8:48 AM PDTGale WarningMTR25 hr
Jun 25, 2:27 PM PDTHeat AdvisoryMTRAlameda, Contra Costa, Marin, Napa, Sonoma3 days

Nearby

Excessive Heat Warnings in California, 2009Every excessive heat warning 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.