Flash Flood Warning 15, NWS Las Vegas, NV

Issued

Aug 7, 1997, 4:05 PM MST (23:05 UTC)

Expired

Aug 7, 1997, 6:00 PM MST

In force

115 min

Issued by

NWS Las Vegas, NV

Area

Whole counties

County Mohave County, AZ

000 
TTAA00 KLAS 072305
FFWLAS
AZC015-080100-
 
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM AND FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LAS VEGAS NV
405 PM PDT (405 PM MST) THU AUG 7 1997
 
THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A
SEVERE THUNDERSTORM AND FLASH FLOOD WARNING
EFFECTIVE UNTIL 600 PM PDT (600 PM MST)
FOR PEOPLE IN THE FOLLOWING LOCATIONS......
 
IN NORTHWEST ARIZONA
 
   ...SOUTHERN MOHAVE COUNTY
 
AT 403 PM MST LAS VEGAS DOPPLER WEATHER RADAR WAS SHOWING A SEVERE
THUNDERSTORM OVER HUALAPAI MOUNTAIN PARK...13 MILES SOUTHEAST OF
KINGMAN. THIS STORM HAS A HIGH POTENTIAL TO PRODUCE LARGE HAIL IN THIS
AREA AS WELL AS INTENSE RAIN CAUSING FLASH FLOODING. MOVEMENT OF THIS
STORM WAS TO THE SOUTHEAST AT 5 TO 10 MPH.
 
OTHER VERY STRONG STORMS OVER THE HUALAPAI MOUNTAINS SOUTHEAST OF
KINGMAN COULD BECOME SEVERE AND CAUSE LOCALIZED FLASH FLOODING UNTIL
AROUND 600 PM THIS EVENING.
 
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.

NWS Las Vegas, NV wrote its last area forecast discussion before this flash flood warning went out at Aug 7, 2:49 PM MST, 1 hour 16 minutes earlier.

MOJAVE DESERT/SOUTHERN GREAT BASIN AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAS VEGAS NV
250 PM PDT THU AUG 7 1997

ISOLD TSTMS FORCED SVRL UPDTS THIS AFT. TSTMS MOST NUMEROUS OVR
ECNTRL NYE CO...CLOSEST TO CNTR OF MID LVL ANTICYCLONIC
CIRCULATION.  INJECTION OF MID LVL MSTR AND INSTABILITY NOTED THERE
EARLIER AND PSBL THAT UPR LVL SPEED AND DIRECTIONAL DIVERGENCE
CONTRIBUTING TO DEVELOPMENT.  UPR LOW CONTS TO DVLP OFF CA COAST W
OF PRINCIPLE RDG ACRS CNTRL NV/CA.  MODELS AGREE THAT HGTS WILL LWR
SOME AS UPR HIGH SHIFTS SEWD INTO AZ NEXT BY SAT.  "BAGGY" TROF
THEN REMAINS OFF W COAST INTO WEEKEND AND QUITE POSSIBLY THE
CYCLONIC CIRCULATION WILL EJECT NUMEROUS MID/UPR LVL S/WVS THAT
WILL AID IN CONVECTION AS THE TRAVERSE NV IN SWLY FLOW.  NONE OF
THIS EVIDENT ON MODELS DUE TO SMALL SCALE NATURE OF THESE SYSTEMS.

BASED ON AMT OF TSTMS THAT DEVELOPED TDA...IT IS APPARENT THAT
PLENTY OF MSTR CONTAMINATING UPR HIGH.  THIS MAKES IT EXTREMELY
DIFFICULT TO REALLY DEFINE WHERE TSTMS MIGHT BE SUPPRESSED.  WITH
THAT IN MIND HAVE BROAD BRUSHED MOST ZONES WITH ISOLD AFT/EVE TSTMS
THRU SAT.  TROUBLE SPOTS LIKELY TO CONT TO BE SCNTRL NV ZONES AS
MSTR CONTS TO CIRCULATE AROUND 5H RDG.  THE OTHER AREA OF CONCERN
WILL BE TO THE S WERE RICH LOW LVL MSTR CONTS TO POOL ALONG CO RVR
IN WEAK GULF SURGE.  THAT MSTR NOT LIKELY TO BE SCOURED OUT ANYTIME
SOON AND MAY YET WORK NWD INTO LAS VALLEY THIS WEEKEND.  PER COOR
W/RNO EXTENDED WILL CONTAIN MENTION OF TSTMS OVR THE MTNS DUE TO
UNCERTAINTY OF AVAILABLE MSTR AND MINOR S/WVS.  A LTL MORE
CONFIDENT IN DOWNWARD TREND IN TEMPS AS HGTS CONT TO LWR.
LAS 0001.

NEMETH

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

Flash Flood Warnings in Arizona, 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; the sounding from the Mesonet's radiosonde archive.