Alert archive / California / Flash Flood Warnings in 2003
Flash Flood Warning 13, NWS Los Angeles, CA
NWS Los Angeles, CA issued this flash flood warning at Nov 12, 2003, 4:43 PM PST for Los Angeles County, California. It was in force for 62 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
- Nov 12, 2003, 4:43 PM PST (00:43 UTC)
- Expired
- Nov 12, 2003, 5:45 PM PST
- In force
- 62 min
- Issued by
- NWS Los Angeles, CA
- Area
- Counties, with a storm outline in the text
County Los Angeles County, CA
The radar
The Santa Ana Mts radar (KSOX), 37 km from the middle of the area, began a volume at 00:44 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
San Diego, CA (KNKX), launched 00:00Z, 0.7 hours before the alert went out and 152 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
- 352 J/kg
- Mixed-layer CIN
- 0 J/kg
- Mixed-layer LCL
- 659 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- -2 m²/s²
- 0-3 km storm-relative helicity
- 57 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 130042 FFWLOX CAC037-130145- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA 443 PM PST WED NOV 12 2003 THE NATIONAL WEATHER SERVICE IN OXNARD HAS ISSUED A * FLASH FLOOD WARNING FOR... SOUTHERN AND EASTERN LOS ANGELES COUNTY IN SOUTHWEST CALIFORNIA * UNTIL 545 PM PST * AT 440 PM PST...WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY RAIN ASSOCIATED WITH STRONG THUNDERSTORMS. * LOCATIONS LIKELY TO EXPERIENCE FLASH FLOODING INCLUDE COMPTON... DIAMOND BAR...DOWNEY...EAST LOS ANGELES...EL MONTE...HAWTHORNE... HUNTINGTON PARK...INGLEWOOD...LA PUENTE...DOWNTOWN LOS ANGELES... LYNWOOD...MONTEBELLO...MONTEREY PARK...NORWALK...POMONA...ROWLAND HEIGHTS...SOUTH SAN JOSE HILLS...TORRANCE...WALNUT...WEST COVINA AND WHITTIER. FLOOD WATERS CAN EASILY SWEEP MOTOR VEHICLES DOWNSTREAM EVEN IF THEY ARE FLOWING SLOWLY. IF YOUR MOTOR VEHICLE IS OVERTAKEN BY FLOOD WATERS...ABANDON IT AND MOVE TO HIGHER GROUND ON FOOT. TO REPORT SEVERE WEATHER HAVE THE NEAREST LAW ENFORCEMENT AGENCY RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN OXNARD. LAT...LON 3411 11769 3390 11775 3382 11836 3406 11838
The office that day
Everything else NWS Los Angeles, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 12, 5:45 PM PST | Flash Flood Warning | LOX | Los Angeles | 105 min |
| Nov 12, 7:30 PM PST | Flash Flood Warning | LOX | Los Angeles | 2 hr |
| Nov 12, 9:30 PM PST | Flash Flood Warning | LOX | Los Angeles | 60 min |
Nearby
Flash Flood Warnings in California, 2003Every flash flood warning in 2003
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.