Alert archive / California / Flash Flood Warnings in 2004
Flash Flood Warning 53, NWS San Diego, CA
NWS San Diego, CA issued this flash flood warning at Sep 9, 2004, 2:45 PM PDT for Riverside County, San Diego County, California. It was in force for 2 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
- Sep 9, 2004, 2:45 PM PDT (21:45 UTC)
- Expired
- Sep 9, 2004, 4:45 PM PDT
- In force
- 2 hr
- Issued by
- NWS San Diego, CA
- Area
- Counties, with a storm outline in the text
Counties Riverside County, CA, San Diego County, CA
The radar
The San Diego radar (KNKX), 75 km from the middle of the area, began a volume at 21:48 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 12:00Z, 9.8 hours before the alert went out and 94 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
- 1413 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 12 m²/s²
- 0-3 km storm-relative helicity
- 3 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.1
The text
As transmitted, in the capitals the NWS used until 2016.
000 WGUS56 KSGX 092147 FFWSGX CAC065-073-092345- /X.NEW.KSGX.FF.W.0003.040909T2145Z-040909T2345Z/ /X.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE SAN DIEGO CA 245 PM PDT THU SEP 9 2004 THE NATIONAL WEATHER SERVICE IN SAN DIEGO HAS ISSUED A * FLASH FLOOD WARNING FOR... WEST RIVERSIDE COUNTY IN SOUTHWEST CALIFORNIA NORTH CENTRAL SAN DIEGO COUNTY IN SOUTHWEST CALIFORNIA * UNTIL 445 PM PDT * AT 240 PM PDT...FLASH FLOODING WAS REPORTED FROM A THUNDERSTORM 11 MILES SOUTH OF SANTA ROSA MOUNTAIN...OR ABOUT 26 MILES SOUTH OF PALM DESERT...MOVING NORTHEAST AT 10 MPH. * THE THUNDERSTORM PRODUCING FLASH FLOODING WILL BE NEAR... SANTA ROSA MOUNTAIN BY 335 PM PDT MUD SLIDES AND ROCK SLIDES ARE EXPECTED WITH THIS STORM. MUD SLIDES AND ROCK SLIDES CAN POTENTIALLY TRAP AND KILL PEOPLE CAUGHT IN THEIR PATH. LAT...LON 3339 11668 3327 11652 3348 11627 3362 11647 $$ SMALL/ATKIN
The office that day
Everything else NWS San Diego, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 9, 1:25 PM PDT | Flash Flood Warning | SGX | Riverside, San Diego | 65 min |
| Sep 9, 3:23 PM PDT | Flash Flood Warning | SGX | San Bernardino | 82 min |
| Sep 9, 3:23 PM PDT | Severe Thunderstorm Warning | SGX | San Bernardino | 37 min |
| Sep 9, 3:27 PM PDT | Severe Thunderstorm Warning | SGX | San Bernardino | 78 min |
| Sep 9, 4:44 PM PDT | Flash Flood Warning | SGX | San Diego | 91 min |
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.