Alert archive / California / Flash Flood Warnings in 2006
Flash Flood Warning 21, NWS Los Angeles, CA
NWS Los Angeles, CA issued this flash flood warning at Dec 9, 2006, 11:57 PM PST for Los Angeles County, Ventura County, California. It was in force for 63 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Dec 9, 2006, 11:57 PM PST (07:57 UTC)
- Expired
- Dec 10, 2006, 1:00 AM PST
- In force
- 63 min
- Issued by
- NWS Los Angeles, CA
- Area
- Counties, with a storm outline in the text
Counties Los Angeles County, CA, Ventura County, CA
The radar
The Los Angeles radar (KVTX), 47 km from the middle of the area, began a volume at 07:59 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.
The nearest sounding before it
Edwards AFB, CA (KEDW), launched 00:00Z, 8.0 hours before the alert went out and 114 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
- 1956 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- -23 m²/s²
- 0-3 km storm-relative helicity
- -23 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WGUS56 KLOX 100759 FFWLOX CAC037-111-100900- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE OXNARD CA 1157 PM PST SAT DEC 9 2006 THE NATIONAL WEATHER SERVICE IN OXNARD HAS ISSUED A * FLASH FLOOD WARNING FOR...THE TOPANGA BURN AREA IN WEST CENTRAL LOS ANGELES COUNTY IN SOUTHWEST CALIFORNIA SOUTHEASTERN VENTURA COUNTY IN SOUTHWEST CALIFORNIA * UNTIL 100 AM PST * AT 1147 PM PST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED HEAVY RAINFALL INTENSITIES APPROACHING THE TOPANGA BURN AREA. * LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO SIMI VALLEY AND CHATSWORTH. RESIDENTS AND MOTORISTS IN AND BELOW RECENTLY BURNED AREAS SHOULD BE ALERT TO HEAVY MUD AND DEBRIS FLOWS WHICH MAY BLOCK ROADS AND CULVERTS. POTENTIALLY DANGEROUS FLOODING AND PROPERTY LOSS COULD RESULT IN AREAS WHERE RUNOFF IS RESTRICTED OR BLOCKED. IN ADDITION TO FLASH FLOODING...RAINFALL IS EXPECTED TO CAUSE DEBRIS FLOWS IN THE TOPANGA BURN AREA...ACCORDING TO THRESHOLDS PROVIDED BY THE USGS. AREAS AFFECTED INCLUDE HIGHWAY 118 NEAR SANTA SUSANA PASS...SANTA SUSANA PASS ROAD...AND RESIDENCES IN AND BELOW THE BURN AREA. A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING. IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY. RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY AUTOMOBILE. LAT...LON 3417 11883 3415 11863 3430 11860 3427 11876 $$ KAPLAN/HALL
2 follow-up statements
000 WGUS76 KLOX 100831 FFSLOX FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE OXNARD CA 1227 AM PST SUN DEC 10 2006 CAC037-111-100900- LOS ANGELES-VENTURA- 1227 AM PST SUN DEC 10 2006 ...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 100 AM PST FOR THE TOPANGA BURN AREA IN SOUTHEASTERN VENTURA AND WEST CENTRAL LOS ANGELES COUNTIES... AT 1222 AM PST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE MODERATE TO LOCALLY HEAVY RAIN OVER THE TOPANGA BURN AREA. LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO SIMI VALLEY AND CHATSWORTH. RESIDENTS AND MOTORISTS IN AND BELOW RECENTLY BURNED AREAS SHOULD BE ALERT TO HEAVY MUD AND DEBRIS FLOWS WHICH MAY BLOCK ROADS AND CULVERTS. POTENTIALLY DANGEROUS FLOODING AND PROPERTY LOSS COULD RESULT IN AREAS WHERE RUNOFF IS RESTRICTED OR BLOCKED. IN ADDITION TO FLASH FLOODING...RAINFALL IS EXPECTED TO CAUSE DEBRIS FLOWS IN THE TOPANGA BURN AREA...ACCORDING TO THRESHOLDS PROVIDED BY THE USGS. AREAS AFFECTED INCLUDE HIGHWAY 118 NEAR SANTA SUSANA PASS...SANTA SUSANA PASS ROAD...AND RESIDENCES IN AND BELOW THE BURN AREA. A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING. IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY. RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY AUTOMOBILE. LAT...LON 3417 11883 3415 11863 3430 11860 3427 11876 $$ KAPLAN
000 WGUS76 KLOX 100908 FFSLOX FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE OXNARD CA 106 AM PST SUN DEC 10 2006 CAC037-111-100916- LOS ANGELES-VENTURA- 106 AM PST SUN DEC 10 2006 ...THE FLASH FLOOD WARNING HAS EXPIRED FOR SOUTHEASTERN VENTURA AND WEST CENTRAL LOS ANGELES COUNTIES... SHOWERS HAVE QUICKLY EXITED THE TOPANGA BURN AREA WITH ONLY A FEW SHOWERS EXPECTED TO MOVE ACROSS THE AREA OVERNIGHT. LAT...LON 3417 11883 3415 11863 3430 11860 3427 11876 $$ KAPLAN
The office that day
Everything else NWS Los Angeles, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 9, 6:29 PM PST | Special Marine Warning | LOX | 61 min | |
| Dec 9, 8:40 PM PST | Flash Flood Warning | LOX | Los Angeles, Ventura | 65 min |
| Dec 9, 9:21 PM PST | Flash Flood Warning | LOX | Los Angeles, Ventura | 54 min |
Nearby
Flash Flood Warnings in California, 2006Every flash flood warning in 2006
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; radar from the NEXRAD Level II archive.