Alert archive / California / Flash Flood Warnings in 2000

Flash Flood Warning 11, NWS San Diego, CA

March 5, 2000San Diego County, California

NWS San Diego, CA issued this flash flood warning at Mar 5, 2000, 8:40 AM PST for San Diego County, California. It was in force for 80 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Mar 5, 2000, 8:40 AM PST (16:40 UTC)
Expired: Mar 5, 2000, 10:00 AM PST
In force: 80 min
Issued by: NWS San Diego, CA
Area: Whole counties

County San Diego County, CA

The nearest sounding before it

San Diego, CA (KNKX), launched 12:00Z, 4.7 hours before the alert went out and 47 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 635 m above ground
0-6 km bulk shear: 59 kt
0-1 km storm-relative helicity: 200 m²/s²
0-3 km storm-relative helicity: 206 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WGUS56 KSGX 051641
FFWSGX
CAC073-051800-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN DIEGO CA
840 AM PST SUN MAR 5 2000

THE NATIONAL WEATHER SERVICE IN SAN DIEGO HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTH CENTRAL SAN DIEGO COUNTY IN CALIFORNIA

* UNTIL 1000 AM PST

* AT 840 AM PST...WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY
RAIN MOVING INTO OVER NORTH CENTRAL SAN DIEGO COUNTY.

THE PALOMAR FIRE HAS CREATED LARGE AREAS OF LOOSE...UNSTABLE SOIL
THAT MAY WASH OUT OR BEGIN TO FLOW WITH EVEN MODERATE RAINFALL ON THE
SOUTHEASTERN FLANK OF MT. PALOMAR BETWEEN LAKE HENSHAW AND THE
LA JOLLA INDIAN RESERVATION. HIGHWAY 76 AND COUNTY ROADS S-7 AND S-6
IN THIS AREA WILL BE PARTICULARLY VULNERABLE. RESIDENTS...VISITORS
AND TRAVELERS THROUGH THIS AREA...ESPECIALLY THOSE BELOW STEEP
HILLSIDES...ARE AT RISK AND SHOULD BE PREPARED TO EVACUATE
IMMEDIATELY IF FLOODING...HEAVY FLOWS OF MUD AND DEBRIS OR SIGNS OF
EARTH MOVEMENT ARE OBSERVED.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY
AUTOMOBILE. IF YOUR VEHICLE STALLS...ABANDON IT IMMEDIATELY AND SEEK
HIGHER GROUND.

TO REPORT SEVERE WEATHER HAVE THE NEAREST LAW ENFORCEMENT AGENCY
RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN
SAN DIEGO.

$$

ATKIN

The office that day

Everything else NWS San Diego, CA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Mar 5, 10:37 AM PST	Severe Thunderstorm Warning	SGX	Orange, San Diego	83 min
Mar 5, 3:06 PM PST	Severe Thunderstorm Warning	SGX	San Bernardino	54 min

Nearby

Flash Flood Warnings in California, 2000 Every flash flood warning in 2000

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.