Flash Flood Warning 51, NWS Las Vegas, NV

Issued

Sep 1, 1997, 3:15 PM PDT (22:15 UTC)

Expired

Sep 1, 1997, 5:30 PM PDT

In force

2 hr

Issued by

NWS Las Vegas, NV

Area

Whole counties

County Clark County, NV

The Las Vegas radar (KESX), 58 km from the middle of the area, began a volume at 22:17 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 
TTAA00 KLAS 012218
FFWLAS
NVC003-020030-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LAS VEGAS NV
315 PM PDT MON SEP 01 1997

THE NATIONAL WEATHER SERVICE IN LAS VEGAS NV HAS ISSUED A FLASH
FLOOD WARNING EFFECTIVE UNTIL 530 PM PDT FOR PEOPLE IN THE
FOLLOWING LOCATIONS...

IN SOUTHERN NEVADA

  ...CENTRAL CLARK COUNTY

THIS WARNING INCLUDES THE LAS VEGAS METRO AREA.

AT 310 PM PDT...LAS VEGAS DOPPLER RADAR INDICATED THUNDERSTORMS
WITH VERY HEAVY RAIN MOVING THROUGH THE LAS VEGAS VALLEY.  THE
HEAVIEST RAIN WAS FALLING IN AND AREA FROM NEAR NELLIS AIR FORCE
BASE SOUTH TO NEAR MCCARRAN INTERNATIONAL AIRPORT.  SKYWARN
SPOTTERS REPORTED STREET FLOODING NEAR BONANZA AND NELLIS WITH
WATER AT CURB HEIGHT.  DOPPLER RADAR RAINFALL ESTIMATES INDICATE
THAT BETWEEN ONE HALF AND ONE INCH OF RAIN IS POSSIBLE IN LESS THAN
AN HOUR FROM THESE STORMS. 

THE THUNDERSTORMS WILL CONTINUE TO MOVE SLOWLY FROM SOUTH TO NORTH
ACROSS THE VALLEY AT 10 TO 15 MPH THROUGH 500 PM PDT.  THIS WILL
CAUSE VERY HEAVY RAIN ACCUMULATIONS AND FLASH FLOODING.

DO NOT TRY TO CROSS FLOODED HIGHWAYS. MOST FLASH FLOOD DEATHS OCCUR
IN AUTOMOBILES. DO NOT ATTEMPT TO DRIVE THROUGH RISING WATER.

NEMETH

NWS Las Vegas, NV wrote its last area forecast discussion before this flash flood warning went out at Sep 1, 2:46 PM PDT, 29 minutes earlier.

MOJAVE DESERT/SOUTHERN GREAT BASIN AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAS VEGAS NV
245 PM PDT MON SEP 1 1997

CONTINUING FLASH FLOOD WATCH FOR NVZ016-018>022...CAZ028-029 AND
AZZ031-001>003 TIL 9 PM.  WATCH MAY NEED TO BE EXTENDED INTO
LINCOLN COUNTY LTR IF CURRENT TRENDS CONT. 12Z UA CHARTS AND
SOUNDINGS POINTED TO AN ACTIVE TSTM DAY...AND THAT WELL UNDERWAY.
INCRG SLY FLOW BRINGING DEEP LAYER MONSOONAL MSTR INTO REGION. MSTR
COMBINED WITH DYNAMICS FRM APCHG MEX DISTURBANCE PRODUCING NUMEROUS
TSTMS.  SO FAR THEY ARE VRY HEAVY RAIN PRODUCERS WITH REFLECTIVITY
CORES BEING CARRIED LOW AND IR STLT TOPS WARM.  G55 KTS AT VCNTY
NXP LIKELY FRM WET MICROBURST AND HAVE HAD RPTS OF .25 INCH HAIL AT
HUALAPAI MTN IN MOHAVE CO.

DYNAMICS FRM VORT CROSSING WRN AZ WILL CONT TO KEEP TSTMS GOING
WELL INTO THE NIGHT WITH MAIN THREAT BEING FLASH FLOODING. MODELS
ALL KEEP DEEP LAYERED TROPICAL MSTR ACRS THE AREA INTO WED WITH
ETA48 AGAIN INDCG YET ANOTHER DISTURBANCE MOVG UP THRU WRN AZ TUE
AFT. NOT MATTER WHAT MODEL YOU PICK...LIKELY THAT ADDTIONAL
DISTURBANCES WILL RIDE UP ALONG THE PERIPHERY OF THE HIGH AND SPARK
TSTMS TUE/TUE NGT.  LEANING FCST THAT WAY FOR NOW WITH A DECREASE
IN POPS ON WED AS DYNAMICS FADE.  DRYING TREND CONTS INTO EXTENDED
FOR SRN NV (I HOPE) WITH SOME HINT AT RETURNING SWLY FLOW.  LAS
5332.

NEMETH

SRN NV...FLASH FLOOD WATCH 17Z-04Z NVZ016-018>22
ERN CA...FLASH FLOOD WATCH 17Z-04Z CAZ029-029
NW AZ ...FLASH FLOOD WATCH 17Z-04Z AZZ0031-001>003

Flash Flood Warnings in Nevada, 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; radar from the NEXRAD Level II archive.