Alert archive / California / Flash Flood Warnings in 2004
Flash Flood Warning 71, NWS San Diego, CA
NWS San Diego, CA issued this flash flood warning at Oct 18, 2004, 10:37 AM PDT for San Diego 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 18, 2004, 10:37 AM PDT (17:37 UTC)
- Expired
- Oct 18, 2004, 1:30 PM PDT
- In force
- 3 hr
- Issued by
- NWS San Diego, CA
- Area
- Counties, with a storm outline in the text
County San Diego County, CA
The radar
The San Diego radar (KNKX), 6 km from the middle of the area, began a volume at 17:40 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, 5.6 hours before the alert went out and 24 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
- 94 J/kg
- Mixed-layer CIN
- 0 J/kg
- Mixed-layer LCL
- 633 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 67 m²/s²
- 0-3 km storm-relative helicity
- 84 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 181739
FFWSGX
CAC073-182030-
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN DIEGO CA
1037 AM PDT MON OCT 18 2004
THE NATIONAL WEATHER SERVICE IN SAN DIEGO HAS ISSUED A
* FLASH FLOOD WARNING FOR...
CENTRAL SAN DIEGO COUNTY IN SOUTHWEST CALIFORNIA
THIS INCLUDES THE CITIES OF...SAN DIEGO SPRING
VALLEY...SANTEE...POWAY... NATIONAL CITY...LEMON
GROVE...LAKESIDE...LA MESA...ESCONDIDO... ENCINITAS...EL
CAJON...CHULA VISTA
* UNTIL 130 PM PDT
* AT 1031 AM PDT...A LINE OF HEAVY SHOWERS WAS MOVING SOUTH THROUGH
THE SOUTHWESTERN PART OF SAN DIEGO COUNTY NEAR MIRA MESA...OR
ABOUT 8 MILES SOUTHEAST OF ENCINITAS...MOVING SOUTHEAST AT 20 MPH.
* THE THUNDERSTORM PRODUCING FLASH FLOODING WILL BE NEAR...
RANCHO BERNARDO BY 1050 AM PDT
POWAY BY 1055 AM PDT
7 MILES SOUTH OF THE WILD ANIMAL PARK BY 1105 AM PDT
RAMONA BY 1115 AM PDT
SAN DIEGO COUNTRY ESTATES BY 1125 AM PDT
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.
EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY
ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS...STREAMS AND OTHER LOW
LYING AREAS ARE SUBJECT TO FLOODING.
LAT...LON 3308 11730 3281 11724 3258 11704 3267 11624
3326 11675
$$
ATKINThe office that day
Everything else NWS San Diego, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 18, 6:34 AM PDT | Flash Flood Warning | SGX | San Diego | 116 min |
| Oct 18, 8:19 AM PDT | Flash Flood Warning | SGX | San Diego | 2 hr |
| Oct 18, 1:35 PM PDT | Flash Flood Warning | SGX | San Diego | 115 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.