Flash Flood Warning 12, NWS Las Vegas, NV

Issued

Aug 3, 1997, 4:00 PM PDT (23:00 UTC)

Expired

Aug 3, 1997, 5:00 PM PDT

In force

60 min

Issued by

NWS Las Vegas, NV

Area

Whole counties

County San Bernardino County, CA

000 
TTAA00 KLAS 032303
FFWLAS
CAC071-040000-
 
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM AND FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LAS VEGAS NV
400 PM PDT SUN AUG 3 1997
 
THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A
SEVERE THUNDERSTORM AND FLASH FLOOD WARNING
EFFECTIVE UNTIL  500 PM PDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS......
 
IN EAST CALIFORNIA
 
   ...SAN BERNARDINO COUNTY EXCEPT THE UPPER COLORADO RIVER
      VALLEY...
 
NATIONAL WEATHER SERVICE DOPPLER RADAR IN LAS VEGAS AND EDWARDS
AIR FORCE DOPPLER RADAR CONTINUE TO SHOW DEVELOPMENT OF THUNDERSTORMS
ACROSS SAN BERNARDINO COUNTY.  THIS WARNING INCLUDES ALL OF SAN
BERNARDINO COUNTY EXCEPT THE UPPER COLORADO RIVER VALLEY.  THIS
WARNING SUPERCEDES THE PREVIOUS WARNING...IN ORDER TO INCLUDE ALL
OF SAN BERNARDINO COUNTY EXCEPT AROUND THE COLORADO RIVER.  SOME
STRONGER STORMS HAVE ALSO DEVELOPED SOUTHWEST OF BAKER AND AROUND
LUDLOW ON INTERSTATE 40.  THUNDERSTORM ACTIVITY CONTINUES ALONG
CALIFORNIA STATE ROUTE 62 AND 247.  THESE STORMS HAVE A HISTORY OF
DAMAGING WINDS AND LOCALIZED HEAVY RAIN.
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55
MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR
OF YOUR HOME OR BUSINESS.  HEAVY RAINS FLOOD ROADS QUICKLY SO
DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.
 
CORDERO

NWS Las Vegas, NV wrote its last area forecast discussion before this flash flood warning went out at Aug 3, 1:50 PM PDT, 2 hours 10 minutes earlier.

MOJAVE DESERT/SOUTHERN GREAT BASIN AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAS VEGAS NV
150 PM PDT SUN AUG 3 1997

WATER VAPOR LOOP THIS AFTERNOON SHOWED ABUNDANT MSTR AT MID AND UPR
LVLS FLOWING N INTO THE CWA.  VORT MAX...WHICH WAS CLEARLY EVIDENT
OVR NRN BAJA...WAS SHOWN LIFTING NNW.  KESX RADAR SHOWED SCT RW AND
A FEW TRW ACRS SRN PTNS OF THE CWA LIFTING OFF THE NW VIA SE FLO
ALF.  12Z ETA/AVN/NGM FAILED TO PROPERLY INITIALIZE VORT LOBE.
MOVMT OF VORT LOBE DEFINATELY AN UNCERTAINTY...BUT THINK FEATURE WL
CONT TO LIFT N AND BE LOCATED ACRS SRN NEVADA SOMETIME DURING THE
ERY MORNING HOURS.  BASED ON THIS TIMING...SCT NOCTURAL RW/TRW A
GOOD POSSIBLITY ACRS ALL BUT THE EXTREME N.  PER COOR WITH
PHX/LAX...WL CANCEL FLASH FLOOD WATCHES FOR SE CA AND NW AZ.  SOME
TRW WERE BEGINNING TO FLARE UP ACRS THE MTNS OF SAN BERNARDINO
WHERE GREATEST SURFACE HEATING OCCURED TDA...BUT FOR THE MOST PART
ACTIVITY HAS BEEN SUPRESSED BY CONSIDERABLE CLOUD COVER.  EXTND
PROGS INTESIFY UPR RDG ACRS THE WRN US WITH UPR HI CENTERED ACRS
SRN NEVADA THRU MUCH OF THE PD.  THIS SHOULD EFFECTIVELY CAP MOST
AREAS...EXCEPT PERHAPS ACRS PTNS OF MOHAVE COUNTY AND S CNTL NEVADA
MTNS.  LAS 4220.  MATUSIEWICZ

SRN NV...NONE
ERN CA...NONE
NW AZ ...NONE

Flash Flood Warnings in California, 1997Every flash flood warning in 1997

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text.