Alert archive / California / Flash Flood Warnings in 1999

Flash Flood Warning 2, NWS Los Angeles, CA

July 11, 1999Los Angeles County, California

NWS Los Angeles, CA issued this flash flood warning at Jul 11, 1999, 5:20 PM PDT for Los Angeles County, California. It was in force for 100 min. 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 11, 1999, 5:20 PM PDT (00:20 UTC)
Expired: Jul 11, 1999, 7:00 PM PDT
In force: 100 min
Issued by: NWS Los Angeles, CA
Area: Whole counties

County Los Angeles County, CA

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KLAX 120026
FFWLAX
CAC037-120200-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE OXNARD CA
520 PM PDT SUN JUL 11 1999

THE NATIONAL WEATHER SERVICE IN OXNARD HAS ISSUED A

* FLASH FLOOD WARNING FOR NORTH CENTRAL LOS ANGELES COUNTY
INCLUDING...THE SAN GABRIEL VALLEY AND SAN GABRIEL MOUNTAINS AND
FOOTHILLS.

* UNTIL 700 PM PDT

* AT 515 PM PDT...SULPHUR MOUNTAIN DOPPLER RADAR SHOWED STRONG
THUNDERSTORMS OVER THE SAN GABRIEL MOUNTAINS...ESPECIALLY AROUND
THE MOUNT WILSON AREA.  HEAVY RAIN AND RUNOFF WILL LIKELY CAUSE
FLOODING ALONG HIGHWAY NUMBER 2 IN THE ALTADENA AREA...HIGHWAYS 138
AND 14 ACROSS NORTH FACING FOOTHILLS...AND OTHER LOCATIONS NEAR
STEEP TERRAIN OF THE SAN GABRIEL MOUNTAINS.  THESE THUNDERSTORMS
WERE MOVING VERY SLOWLY.

MOST DEATHS IN FLASH FLOODING OCCUR IN AUTOMOBILES. DO NOT ATTEMPT TO
CROSS BRIDGES...DIPS...OR LOW SPOTS IF WATER COVERS THE ROADWAY.
NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL ONE...ON FOOT. 

$$

SIMPSON

What forecasters said that day

The local office's own words before this flash flood warning 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 warning went out at Jul 11, 2:00 PM PDT, 3 hours 20 minutes earlier.

Area forecast discussion, Jul 11, 2:00 PM PDT, 3 hours 20 minutes before

SOUTHWEST CALIFORNIA AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA
2 PM PDT SUN JUL 11 1999

DOPPLER RADARS AND STLT PICS SHOW STG TSTMS HV DVLPD OVR VTU/LA CNTY
MTNS THIS AFTN. NMRS LGTNG STIKES AND HVY RNFALL RATES ARE INDICATED
BY RADARS. SPOTTERS HV CONFIRMED LOTS OF LGTNG BUT NOT THE EXCESSIVE
RNFALL RATES. ALERT GAGES SHOWG A FEW TIPS BUT NOTHING APPROACHING HVY
RN SO FAR. TSTMS TO CONT THIS AFTN AND...WITH SLO MVG STMS AND HI PW
LVLS...XPC AN INCR IN HVY SHWRS AND PSBL FLDG OVR AND NR MTNS. HV
ISSUED FFA FOR THE VTU/LA CNTY MTNS AS WELL AS SAN GABRIEL VLY...WHICH
LUKS THE MOST SUSCEPTIBLE TO RUNOFF BLO MTN CANYONS. MDLS CONT MOIST
MID LVL FLO THRU PD SO CHC OF AFTN/EVE TSTMS OVR AND NR SRN CA MTNS
AS WELL AS ANTELOPE VLY TO CONT. LAX 1111. HENDERSON

.LAX...NONE.

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 12, 2:30 PM PDT	Severe Thunderstorm Warning	LOX	San Luis Obispo, Santa Barbara	60 min
Jul 12, 2:30 PM PDT	Severe Thunderstorm Warning	LOX	Ventura	60 min
Jul 12, 4:45 PM PDT	Flash Flood Warning	LOX	Los Angeles, Ventura	2 hr

Nearby

Flash Flood Warnings in California, 1999 Every flash flood warning in 1999

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text.