Alert archive / California / Frost Advisories in 2011

Frost Advisory 1, NWS Los Angeles, CA

December 31, 2010Los Angeles County, California

NWS Los Angeles, CA issued this frost advisory at Dec 31, 2010, 9:07 PM PST for Los Angeles County, California. It took effect at Jan 1, 2011, 12:00 AM PST. It was in force for 9 hr.

The area

The counties it named.

The facts

Issued: Dec 31, 2010, 9:07 PM PST (05:07 UTC)
In effect from: Jan 1, 2011, 12:00 AM PST
Expired: Jan 1, 2011, 9:00 AM PST
In force: 9 hr
Issued by: NWS Los Angeles, CA

County Los Angeles County, CA

The radar

The Santa Ana Mts radar (KSOX), 71 km from the middle of the area, began a volume at 05:06 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 frost advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Los Angeles, CA wrote its last area forecast discussion before this frost advisory went out at Dec 31, 4:15 PM PST, 4 hours 52 minutes earlier.

Area forecast discussion, Dec 31, 4:15 PM PST, 4 hours 52 minutes before

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Hazardous weather outlook, Dec 31, 6:00 AM PST, 15 hours 7 minutes before

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In the hours before

Special weather statement, Dec 31, 3:32 PM PST, 5 hours 35 minutes before

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The office that day

Everything else NWS Los Angeles, CA issued on the same UTC day.

Issued	Product	Office	Lasted
Jan 1, 3:29 AM PST	Winter Storm Watch	LOX	8 hr
Jan 1, 11:30 AM PST	Winter Storm Watch	LOX	22 hr
Jan 1, 11:30 AM PST	Winter Storm Warning	LOX	51 hr

Nearby

Frost Advisories in California, 2011 Every frost advisory in 2011

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.