Alert archive / California / Flash Flood Warnings in 2004
Flash Flood Warning 83, NWS San Diego, CA
NWS San Diego, CA issued this flash flood warning at Oct 26, 2004, 11:00 PM PDT for Orange County, Riverside County, San Bernardino County, California. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Oct 26, 2004, 11:00 PM PDT (06:00 UTC)
- Expired
- Oct 27, 2004, 2:00 AM PDT
- In force
- 3 hr
- Issued by
- NWS San Diego, CA
- Area
- Counties, with a storm outline in the text
Counties Orange County, CA, Riverside County, CA, San Bernardino County, CA
The radar
The Santa Ana Mts radar (KSOX), 11 km from the middle of the area, began a volume at 06:00 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, 6.0 hours before the alert went out and 126 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
- 1114 m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- 59 m²/s²
- 0-3 km storm-relative helicity
- 64 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 KSGX 270601 FFWSGX CAC059-065-071-270900- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE SAN DIEGO CA 1100 PM PDT TUE OCT 26 2004 THE NATIONAL WEATHER SERVICE IN SAN DIEGO HAS ISSUED A * FLASH FLOOD WARNING FOR... NORTHWESTERN RIVERSIDE COUNTY SOUTHWESTERN SAN BERNARDINO COUNTY ORANGE COUNTY * UNTIL 200 AM PDT * AT 1055 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED HEAVY RAIN ACROSS MUCH OF ORANGE COUNTY WITH RAINFALL RATES IN EXCESS OF ONE HALF INCH PER HOUR. THE HEAVY RAINFALL WILL MOVE INTO THE INLAND EMPIRE ACROSS NORTHERN RIVERSIDE AND SOUTHWEST SAN BERNARDINO COUNTY...INCLUDING THE FIRE BURN AREAS THROUGH 2 AM. A BAND OF HEAVIER RAINFALL WITH RAINFALL RATES IN EXCESS OF ONE INCH PER HOUR WILL MOVE ACROSS THE WARNING AREA BETWEEN MIDNIGHT AND 2 AM. * LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO SILVERADO CANYON...SANTIAGO PEAK...SAN GORGONIO MOUNTAIN...FREMONT CANYON...DEVORE...LYTLE CREEK...CAJON SUMMIT...WOODCREST...VILLA PARK...SUN CITY...MIRA LOMA...MENTONE...MARCH AFB...LOMA LINDA...LAKELAND VILLAGE...LAKE ARROWHEAD...CRESTLINE...CANYON LAKE...CALIMESA...BEAUMONT AND ALISO VIEJO. 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. LAT...LON 3376 11804 3343 11757 3413 11666 3439 11751 $$ PURPURA
The office that day
Everything else NWS San Diego, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 27, 1:52 AM PDT | Flash Flood Warning | SGX | Orange, Riverside, San Bernardino | 3 hr |
| Oct 27, 4:07 AM PDT | Flash Flood Warning | SGX | San Diego | 3 hr |
| Oct 27, 4:50 AM PDT | Flash Flood Warning | SGX | Riverside, San Bernardino | 3 hr |
| Oct 27, 7:05 AM PDT | Flash Flood Warning | SGX | San Diego | 115 min |
| Oct 27, 2:54 PM PDT | Flash Flood Warning | SGX | San Bernardino | 2 hr |
| Oct 27, 4:58 PM PDT | Flash Flood Warning | SGX | San Bernardino | 3 hr |
Nearby
Flash Flood Warnings in California, 2004Every flash flood warning in 2004
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.