Alert archive / California / Flash Flood Warnings in 1992
Flash Flood Warning 7, NWS Los Angeles, CA
NWS Los Angeles, CA issued this flash flood warning at Feb 12, 1992, 1:02 PM PST for Riverside County, California. It was in force for 3 hr.
The area
The counties it named.
The facts
- Issued
- Feb 12, 1992, 1:02 PM PST (21:02 UTC)
- Expired
- Feb 12, 1992, 4:00 PM PST
- In force
- 3 hr
- Issued by
- NWS Los Angeles, CA
- Area
- Whole counties
County Riverside County, CA
The nearest sounding before it
San Diego, CA (KNKX), launched 12:00Z, 9.0 hours before the alert went out and 154 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 0 m above ground
- 0-6 km bulk shear
- 62 kt
- 0-1 km storm-relative helicity
- 184 m²/s²
- 0-3 km storm-relative helicity
- 240 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KLAX 122103 FFWLAX CAC037-065-071-130000- BULLETIN - EBS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE LOS ANGELES CA 102 PM PST WED FEB 12 1992 THE NATIONAL WEATHER SERVICE IN LOS ANGELES HAS ISSUED A FLASH FLOOD WARNING EFFECTIVE UNTIL 400 PM PST FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN SOUTH CALIFORNIA ...LOS ANGELES COUNTY...WESTERN RIVERSIDE COUNTY ...SOUTHWESTERN SAN BERNARDINO COUNTY A STRONG COLD FRONT IS NOW MOVING INTO SOUTHWEST SAN BERNARDINO AND WEST RIVERSIDE COUNTIES WITH VERY HEAVY RAIN. AMOUNTS OVER THE NEXT 3 HOURS WILL RANGE UP 3 INCHES... WITH THE GROUND ALREADY SATURATED FROM PREVIOUS RAINS ALL THE NEW PRECEIPTATION WILL RESULT IN HEAVY RUNOFF AND LOCAL FLASH FLOODING. HEAVY RUNOFF FROM THIS STORM CONTINUES IN MOST OF LOS ANGELES COUNTY. A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IS IMMINENT. MOST FLASH FLOOD DEATHS 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. TO ESCAPE RISING WATER MOVE UP TO HIGHER GROUND. FINKE
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.
In the hours before
Special weather statement, Feb 12, 7:59 AM PST, 5 hours 3 minutes before
CAZ013-122300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE LOS ANGELES CA 800 AM PST WED FEB 12 1992 ...WINTER STORM WARNING HIGHER ELEVATIONS SAN JACINTO MOUNTAINS NORTH TODAY... A VIGOROUS STORM SYSTEM CONTINUES TO AFFECT CENTRAL AND SOUTHERN CALIFORNIA THIS MORNING. RADAR...SATELLITE...AND SURFACE REPORTS INDICATE LIGHT TO MODERATE AND LOCALLY HEAVY RAIN FROM THE LOS ANGELES BASIN TO SANTA BARBARA COUNTY. THE RAIN WAS MOVING EAST. ALSO...SOUTH WINDS 20 TO 35 MPH HAVE BEEN OBSERVED IN THE THE MOUNTAIN AREAS WEST AND NORTH OF POINT MUGU. WINTER STORM WARNINGS CONTINUE FROM THE SAN JACINTO MOUNTAINS NORTH. 5 TO 10 INCHES OF SNOW COULD ACCUMULATE ABOVE 6500 FEET TODAY. ALSO... SOUTHERLY WINDS 20 TO 35 MPH WITH A FEW GUSTS TO 50 MPH WILL OCCUR... ESPECIALLY OVER THE NORTHERN RANGES. PEOPLE TRAVELING INTO THE MOUNTAINS SHOULD BE PREPARED FOR DANGEROUS WINTER WEATHER CONDITIONS. CARRY CHAINS...ADDITIONAL CLOTHING...ANDi LISTEN TO THE LATEST WEATHER AND ROAD REPORTS BEFORE VENTURING INTO THE MOUNTAINS. BE ESPECIALLY CAREFUL IF YOU ARE DRIVING A HIGH PROFILE OR LIGHT WEIGHT VEHICLE. THE NEXT STATEMENT WILL BE ISSUED BY 3 PM PST. STARMER
The office that day
Everything else NWS Los Angeles, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 12, 4:45 AM PST | Flash Flood Warning | LOX | Santa Barbara | 2 hr |
| Feb 12, 6:55 AM PST | Flash Flood Warning | LOX | Santa Barbara | 2 hr |
| Feb 12, 9:37 AM PST | Flash Flood Warning | LOX | Los Angeles, Ventura | 2 hr |
| Feb 12, 11:18 AM PST | Flash Flood Warning | LOX | Los Angeles, Ventura | 117 min |
| Feb 12, 1:02 PM PST | Flash Flood Warning | LOX | Los Angeles, San Bernardino | 3 hr |
Nearby
Flash Flood Warnings in California, 1992Every flash flood warning in 1992
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive.