Flash Flood Warning 12, NWS San Diego, CA

Issued

Sep 2, 2001, 1:28 PM PDT (20:28 UTC)

Expired

Sep 2, 2001, 3:00 PM PDT

In force

92 min

Issued by

NWS San Diego, CA

Area

Whole counties

County San Diego County, CA

The San Diego radar (KNKX), 28 km from the middle of the area, began a volume at 20:30 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.

000 
WGUS56 KSGX 022029
FFWSAN
CAC073-022200-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN DIEGO CA
128 PM PDT SUN SEP 2 2001

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  THE MOUNTAINS OF CENTRAL AND SOUTHEAST SAN DIEGO COUNTY 
  IN SOUTHWEST CALIFORNIA

* UNTIL 300 PM PDT

* AT 125 PM PDT...WEATHER SERVICE DOPPLER RADAR INDICATED VERY 
  HEAVY RAIN 5 MILES NORTH OF PINE VALLEY AND MOUNT LAGUNA...OR 
  ABOUT 20 MILES EAST OF LAKESIDE...MOVING WEST-NORTHWEST AT 10 MPH.

* THE THUNDERSTORM WITH EXCESSIVE RAINFALL WILL BE 5 MILES NORTH
  OF DESCANSO BY 145 PM. OTHER THUNDERSTORMS WITH HEAVY RAIN WILL
  CONTINUE TO AFFECT THE CUYAMACA STATE PARK AREA THROUGH 200 PM.
  RADAR ESTIMATES RAINFALL IN EXCESS OF ONE INCH HAS FALLEN 
  NORTHEAST OF PINE VALLEY WITH MORE RAIN EXPECTED.

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.

$$

LAT...LON 3306 11679 3261 11652 3263 11617 3309 11643

MAXWELL

NWS San Diego, CA wrote its last area forecast discussion before this flash flood warning went out at Sep 2, 1:05 PM PDT, 23 minutes earlier.

EXTREME SOUTHWESTERN CALIFORNIA AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN DIEGO CA
105 PM PDT SUN SEP 2 2001

                             ...SYNOPSIS...
AFTER THE MOUNTAIN AND DESERT THUNDERSTORM OUTBREAK TODAY...MOISTURE
FROM THE DECAYED REMNANTS OF HURRICANE FLOSSIE WILL BRING SOME MORE
THUNDERSTORMS MONDAY. HOWEVER...A TREND TOWARDS DRIER SOUTHWEST FLOW
ALOFT WILL BRING FAIR WEATHER TUESDAY...OTHER THAN SOME COASTAL LOW
CLOUDS AND FOG. STRENGTHENING HIGH PRESSURE ALOFT WILL BRING HOT
WEATHER INLAND WEDNESDAY THROUGH NEXT WEEKEND.

                            ...DISCUSSION...
THIS WILL BE A QUICK EARLY AFD DUE TO THE NEED TO WATCH THE TSTORMS
THIS AFTERNOON. UP TO 1/2 INCH HAIL OCCURRED OVER WRIGHTWOOD BEFORE
NOON...AND AN NUMEROUS TSTORMS WITH HEAVY RAIN ARE OCCURRING OVER
THE MTNS. SKYWARN HAS JUST BEEN ACTIVATED FOR SAN DIEGO COUNTY WITH
ATTEMPTS BEING MADE FOR SAN BERN COUNTY.

12Z ETA K-F SHOWS WIDESPREAD CONVECTION FOR MONDAY DESPITE SOME
DRYING ALOFT...THOUGH ETA IS WETTER THAN AVN. SO...I HAVE 30 POPS
FOR MOST MTN AREAS. PRECIP APPEARS UNLIKELY TUESDAY. BY AROUND LATE
TUESDAY...THE SHORTWAVE TO OUR N/NW WEAKENS AND LIFTS OUT OF OUR
AREA ALLOWING THE DESERT SW HIGH PRESSURE CELL TO STRENGTHEN. THE
CLOSED LOW PROGGED TO BE OUT AROUND 135-140 DEG W IS PROGGED TO STAY
OUT THERE LATE IN THE WEEK...SO THAT SHOULD SOLIDIFY THE WARM
PATTERN FOR HERE.

.SAN...FLASH FLOOD WATCH FOR MTNS/DESERTS UNTIL 6 PM...SEE LAXFFASAN.

MAXWELL

Flash Flood Warnings in California, 2001Every flash flood warning in 2001

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.