Alert archive / California / Flash Flood Watches in 2016

Flash Flood Watch 10, NWS Los Angeles, CA

December 22, 2016Los Angeles County, California

NWS Los Angeles, CA issued this flash flood watch at Dec 22, 2016, 2:43 PM PST for Los Angeles County, California. It took effect at Dec 23, 2016, 10:00 AM PST. It was in force for 18 hr.

The area

The counties it named.

The facts

Issued
Dec 22, 2016, 2:43 PM PST (22:43 UTC)
In effect from
Dec 23, 2016, 10:00 AM PST
Expired
Dec 24, 2016, 3:31 AM PST
In force
18 hr
Issued by
NWS Los Angeles, CA
Flood severity
None

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 22:45 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 flash flood watch 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 flash flood watch went out at Dec 22, 2:35 PM PST, 8 minutes earlier.

Area forecast discussion, Dec 22, 2:35 PM PST, 8 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Dec 21, 6:29 PM PSTWind AdvisoryLOXLos Angeles15 hr
Dec 21, 9:50 PM PSTAreal Flood AdvisoryLOXLos Angeles5 hr
Dec 21, 11:24 PM PSTSmall Craft AdvisoryLOX4 hr
Dec 22, 4:20 AM PSTAreal Flood AdvisoryLOXLos Angeles115 min
Dec 22, 5:37 AM PSTWinter Storm WatchLOX21 hr

Nearby

Flash Flood Watches in California, 2016Every flash flood watch in 2016

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.