Alert archive / California / Flash Flood Watches in 2017

Flash Flood Watch 3, NWS Los Angeles, CA

January 12, 2017Los Angeles County, California

NWS Los Angeles, CA issued this flash flood watch at Jan 12, 2017, 3:39 AM PST for Los Angeles County, California. It took effect at Jan 12, 2017, 6:00 AM PST. It was in force for 15 hr.

The area

The counties it named.

The facts

Issued
Jan 12, 2017, 3:39 AM PST (11:39 UTC)
In effect from
Jan 12, 2017, 6:00 AM PST
Expired
Jan 12, 2017, 9:00 PM PST
In force
15 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 11:43 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 Jan 12, 3:27 AM PST, 12 minutes earlier.

Area forecast discussion, Jan 12, 3:27 AM PST, 12 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jan 12, 1:44 AM PSTSmall Craft Advisory for WindsLOX18 hr
Jan 12, 4:23 AM PSTAreal Flood AdvisoryLOXSan Luis Obispo3 hr
Jan 12, 5:08 AM PSTAreal Flood AdvisoryLOXLos Angeles3 hr
Jan 12, 6:18 AM PSTAreal Flood AdvisoryLOXLos Angeles3 hr
Jan 12, 7:26 AM PSTAreal Flood AdvisoryLOXSan Luis Obispo, Santa Barbara3 hr
Jan 12, 8:37 AM PSTAreal Flood AdvisoryLOXVentura3 hr
Jan 12, 9:25 AM PSTAreal Flood AdvisoryLOXLos Angeles5 hr
Jan 12, 12:37 PM PSTAreal Flood AdvisoryLOXLos Angeles113 min
Jan 12, 1:02 PM PSTFlash Flood WarningLOXLos Angeles3 hr
Jan 12, 2:16 PM PSTAreal Flood AdvisoryLOXLos Angeles119 min

Nearby

Flash Flood Watches in California, 2017Every flash flood watch 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.