Alert archive / Arizona / Flash Flood Warnings in 1996

Flash Flood Warning 63, NWS Las Vegas, NV

November 22, 1996Mohave County, Arizona

NWS Las Vegas, NV issued this flash flood warning at Nov 22, 1996, 4:10 PM MST for Mohave County, Arizona. It was in force for 65 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
Nov 22, 1996, 4:10 PM MST (23:10 UTC)
Expired
Nov 22, 1996, 5:15 PM MST
In force
65 min
Issued by
NWS Las Vegas, NV
Area
Whole counties

County Mohave County, AZ

The nearest sounding before it

Flgstf/Belemont, AZ (KFGZ), launched 12:00Z, 11.2 hours before the alert went out and 185 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, Flgstf/Belemont, AZ at 12:00Z on 1996-11-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Flgstf/Belemont, AZ at 12:00Z on 1996-11-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 255 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
853 m above ground
0-6 km bulk shear
64 kt
0-1 km storm-relative helicity
255 m²/s²
0-3 km storm-relative helicity
313 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 
TTAA00 KLAS 222313
FFWLAS
AZC015-230015-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM AND FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LAS VEGAS NV
310 PM PST (410 PM MST) FRI NOV 22 1996
 
THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  415 PM PST (515 PM MST)
FOR PEOPLE IN THE FOLLOWING LOCATIONS......
 
IN NORTHWEST ARIZONA
 
   ...EASTERN MOHAVE COUNTY
 
AT 3 PM...LAS VEGAS DOPPLER RADAR INDICATED SEVERE THUNDERSTORMS
ALONG HIGHWAY 66 FIFTEEN MILES NORTHEAST OF KINGMAN AND 10 MILES WEST
OF KINGMAN.  THE THUNDERSTORMS WERE MOVING TO THE NORTHEAST AT 20
MPH.  SEVERAL FUNNEL CLOUDS HAVE BEEN REPORTED BY THE PUBLIC
BRIEFLY TOUGHCING THE GROUND WITH THESE STORMS.  FLASH FLOODING
HAS ALSO BEEN OBSERVED WITH WASHES FLOODING NEAR GOLDEN VALLEY
NORTHWEST OF KINGMAN.
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55
MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
8FOR 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.
 
KOSIER

What forecasters said that day

The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Las Vegas, NV wrote its last area forecast discussion before this flash flood warning went out at Nov 22, 3:46 PM MST, 24 minutes earlier.

Area forecast discussion, Nov 22, 3:46 PM MST, 24 minutes before
MOJAVE DESERT/SOUTHERN GREAT BASIN AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAS VEGAS NV
235 PM PST FRI NOV 22 1996

STEEP LAPSE RATES AND GOOD VERT SHEAR HAS RESULTED IN SOME STG
CNVTN THIS MRNG AND EARLY AFTN OVR PARTS OF SRN NV AND NW AZ.
HAD SOME REPORTS OF SMALL HAIL EARLIER AND MESO WAS TRIGGERED ON
STM W OF LAUGHLIN WHERE ROTN WAS ENHCD BY PROXIMITY OF SFC FNTL
ZONE.  A FEW STG TSTMS STILL DVLPG IN CNTRL MOHAVE COUNTY ALG NOSE
OF MID LVL DRY PROD WHERE MESO-ETA DEPICTS CAPES OF 1000-1500 J/KG.
NEW DVLPMT ALSO BEING GENERATED ACRS LINCOLN COUNTY NV WHERE STG
DFRNTL PVA OVRSPRDS H7 CNVRGC ZONE.  NXT UPSTRM VORT CNTR DIVING
TWD BASE OF TROF NOT EXPCD TO PRODUCE MUCH OF A PCPN THREAT ACRS
CWA SINCE MOST OF THE DEEP MSTR HAS BEEN SWEPT E AND UVV WILL BE
CONFINED TO A FAIRLY SHALLOW LYR ONCE IT CROSSES THE SIERRA CREST.
LOTS OF RAIN WATER WAS LAID DOWN OVR LAST 24HRS IN SRN NV BUT
DRAINAGE WNDS SHD BE STEADY ENUF TO KEEP LO-LVL MSTR MXD OUT AND
PREVENT FOG EXCPT PSBLY IN PAHRUMP AND MOAPA VALLEYS.  TREND WILL
BE FOR GEN IMPRVMT NXT COUPLE DAYS AS HGTS RISE.  RESPONSE OF THKNS
WILL BE SOMEWHAT SLOWER SO NOT LOOKING FOR BIG WARMUP OVR WEEKEND.
DONT SEE CHC FOR MORE PCPN IN XTDD BEFORE TUE/WED.
LAS 0000.  RUNK

The office that day

Everything else NWS Las Vegas, NV issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Nov 21, 5:09 PM MSTFlash Flood WarningVEFMohave66 min
Nov 21, 5:09 PM MSTTornado WarningVEFMohave66 min
Nov 22, 4:10 PM MSTSevere Thunderstorm WarningVEFMohave65 min

Nearby

Flash Flood Warnings in Arizona, 1996Every flash flood warning in 1996

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.