Alert archive / California / Flash Flood Warnings in 2004
Flash Flood Warning 86, NWS San Diego, CA
NWS San Diego, CA issued this flash flood warning at Oct 27, 2004, 4:50 AM PDT for 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, 4:50 AM PDT (11:50 UTC)
- Expired
- Oct 27, 2004, 8:00 AM PDT
- In force
- 3 hr
- Issued by
- NWS San Diego, CA
- Area
- Counties, with a storm outline in the text
The radar
The Santa Ana Mts radar (KSOX), 30 km from the middle of the area, began a volume at 11:51 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, 11.8 hours before the alert went out and 124 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 271151
FFWSGX
CAC065-071-271500-
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN DIEGO CA
450 AM PDT WED OCT 27 2004
THE NATIONAL WEATHER SERVICE IN SAN DIEGO HAS ISSUED A
* FLASH FLOOD WARNING FOR...
WESTERN RIVERSIDE COUNTY
SOUTHWESTERN SAN BERNARDINO COUNTY
* UNTIL 800 AM PDT
* AT 445 AM PDT...HEAVY RAIN CONTINUES ACROSS THE INLAND EMPIRE AND
THE SOUTH SLOPES OF THE SAN BERNARDINO COUNTY MOUNTAINS. HIGHEST
RAIN TOTALS IN THE INLAND EMPIRE INCLUDE 2.08 INCHES AT MURIETTA AND
A 6 HOUR TOTAL OF 3.58 INCHES IN THE SAN BERNARDINO MOUNTAINS AT
LYTLE CREEK.
* 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 3398 11769 3345 11716 3347 11686 3423 11697
3434 11759
$$
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, 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, 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.