Alert archive / California / Flash Flood Warnings in 2004
Flash Flood Warning 84, NWS San Diego, CA
NWS San Diego, CA issued this flash flood warning at Oct 27, 2004, 1:52 AM 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 27, 2004, 1:52 AM PDT (08:52 UTC)
- Expired
- Oct 27, 2004, 5:00 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), 26 km from the middle of the area, began a volume at 08:55 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, 8.9 hours before the alert went out and 125 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 270904
FFWSGX
CAC059-065-071-271200-
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN DIEGO CA
152 AM PDT WED OCT 27 2004
THE NATIONAL WEATHER SERVICE IN SAN DIEGO HAS ISSUED A
* FLASH FLOOD WARNING FOR...
WESTERN RIVERSIDE COUNTY IN SOUTHEAST CALIFORNIA
THIS INCLUDES THE CITIES OF...TEMECULA...RIVERSIDE...
PERRIS...NORCO...LAKE ELSINORE...HEMET...CORONA
SOUTHWESTERN SAN BERNARDINO COUNTY IN SOUTHEAST CALIFORNIA
THIS INCLUDES THE CITIES OF...SAN BERNARDINO...RANCHO
CUCAMONGA...ONTARIO...MONTCLAIR...FONTANA...COLTON...CHINO
ORANGE COUNTY IN SOUTHWEST CALIFORNIA
THIS INCLUDES THE CITIES OF...TUSTIN...SANTA ANA...SAN JUAN
CAPISTRANO...ORANGE...MISSION VIEJO...LAGUNA NIGUEL...ANAHEIM
* UNTIL 500 AM PDT
* AT 155 AM PDT...HEAVY RAIN AND A FEW THUNDERSTORMS CONTINUED
ACROSS MUCH OF ORANGE COUNTY...EXTENDING INTO NORTHWEST RIVERSIDE
COUNTY AND SOUTHWEST SAN BERNARDINO COUNTY...INCLUDING THE BURN
AREAS. THROUGH 5 AM THE HEAVY RAIN WILL SPREAD SOUTH OVER THE
RIVERSIDE COUNTY VALLEYS. RAINFALL TOTALS ARE APPROACHING 3 INCHES
AT SANTIAGO PEAK AND ARE AS BETWEEN ONE TO TWO INCHES AT SOME
COASTAL LOCATIONS IN ORANGE COUNTY. NUMEROUS REPORTS OF MINOR TO
MODERATE ROADWAY FLOODING HAVE BEEN RECEIVED.
* HEAVY RAINFALL IN THE BURN AREAS MAY CAUSE FLOODING AND MUDSLIDES.
IF YOU APPROACH WATER OF UNKNOWN DEPTH...TURN AROUND DONT
DROWN
LAT...LON 3425 11736 3427 11757 3381 11805 3345 11774
3350 11707 3371 11693 3411 11694
$$
PURPURAThe office that day
Everything else NWS San Diego, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 26, 11:00 PM 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.