Alert archive / California / Flash Flood Warnings in 2001

Flash Flood Warning 11, NWS San Diego, CA

July 7, 2001San Bernardino County, California

NWS San Diego, CA issued this flash flood warning at Jul 7, 2001, 5:13 PM PDT for San Bernardino County, California. It was in force for 47 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
Jul 7, 2001, 5:13 PM PDT (00:13 UTC)
Expired
Jul 7, 2001, 6:00 PM PDT
In force
47 min
Issued by
NWS San Diego, CA
Area
Whole counties

County San Bernardino County, CA

The nearest sounding before it

Mercury/Desert R, NV (KDRA), launched 00:00Z, 0.2 hours before the alert went out and 198 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-pSkew-T log-p diagram, Mercury/Desert R, NV at 00:00Z on 2001-07-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1125 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Mercury/Desert R, NV at 00:00Z on 2001-07-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -14 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
1125 J/kg
Mixed-layer CIN
-23 J/kg
Mixed-layer LCL
1555 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
-14 m²/s²
0-3 km storm-relative helicity
-13 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 080016
FFWSGX
CAC071-080100-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN DIEGO CA
513 PM PDT SAT JUL 7 2001

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHWESTERN SAN BERNARDINO COUNTY IN SOUTHEAST CALIFORNIA. THIS
  INCLUDES THE CITIES OF WRIGHTWOOD...BIG BEAR...APPLE VALLEY...
  HESPERIA...SAN BERNARDINO...VICTORVILLE

* UNTIL 600 PM PDT

* AT 500 PM PDT...WEATHER SERVICE DOPPLER RADAR INDICATED HEAVY
RAIN JUST EAST OF WRIGHTWOOD AND JUST EAST OF BIG BEAR. A DEVELOPING
THUNDERSTORM WAS JUST NORTH OF FOREST FALLS. THE AREAS OF HEAVY RAIN
WERE NEARLY STATIONARY. THUNDERSTORMS WERE STILL DEVELOPING OVER THE
MOUNTAINS AND DESERTS OF SAN BERNARDINO COUNTY.

* THE THUNDERSTORM WITH EXCESSIVE RAINFALL WILL BE NEAR...WRIGHTWOOD
AND BIG BEAR. THE THUNDERSTORM NEAR FOREST FALLS WAS FLUCTUATING IN
INTENSITY AND MAY INCREASE.

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 TH9E NATIONAL WEATHER SERVICE FORECAST OFFICE.

$$

WHITLOW

LAT...LON 3413 11765 3410 11601 3482 11594 3479 11761

Nearby

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

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.