Alert archive / Arizona / Flash Flood Warnings in 1996

Flash Flood Warning 46, NWS Las Vegas, NV

September 6, 1996Mohave County, Arizona

NWS Las Vegas, NV issued this flash flood warning at Sep 6, 1996, 3:18 PM MST for Mohave County, Arizona. It was in force for 57 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
Sep 6, 1996, 3:18 PM MST (22:18 UTC)
Expired
Sep 6, 1996, 4:15 PM MST
In force
57 min
Issued by
NWS Las Vegas, NV
Area
Whole counties

County Mohave County, AZ

The radar

The Las Vegas radar (KESX), 102 km from the middle of the area, began a volume at 22:18 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.

The nearest sounding before it

Flgstf/Belemont, AZ (KFGZ), launched 12:00Z, 10.3 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 1996-09-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 44 joules per kilogram.LCLLFCEL10008507005003002001001 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 1996-09-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 34 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
44 J/kg
Mixed-layer CIN
-62 J/kg
Mixed-layer LCL
1176 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
34 m²/s²
0-3 km storm-relative helicity
121 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KLAS 062220
FFWLAS
AZC015-062315-
 
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM AND FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LAS VEGAS NV
318 PM PDT (318 PM MST) FRI SEP 6 1996
 
THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A
SEVERE THUNDERSTORM AND FLASH FLOOD WARNING
EFFECTIVE UNTIL  415 PM PDT (415 PM MST)
FOR PEOPLE IN THE FOLLOWING LOCATIONS......
 
IN NORTHWEST ARIZONA
 
   ...CENTRAL MOHAVE COUNTY
 
AT 315 PM PDT (MST)...LAS VEGAS DOPPLER RADAR INDICATED SEVERE
THUNDERSTORMS DEVELOPING OVER CENTRAL MOHAVE COUNTY. THESE STORMS
WERE FORMING ALONG A LINE EXTENDING FROM 7 MILES WEST OF KINGMAN
THROUGH CHLORIDE TO 10 MILES NORTHEAST OF DOLAN SPRINGS.  THESE
THUNDERSTORMS WERE MOVING NORTHEAST AT 5-10 MPH.
 
IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER FROM THE WEATHER IN A
STRONG BUILDING.  DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN...
AND DEADLY LIGHTNING ARE ALL POSSIBLE IN SEVERE THUNDERSTORMS.
STAY INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.
 
RUNK

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 Sep 6, 2:50 PM MST, 28 minutes earlier.

Area forecast discussion, Sep 6, 2:50 PM MST, 28 minutes before
MOJAVE DESERT/SOUTHERN GREAT BASIN AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAS VEGAS NV
250 AM PDT FRI SEP 6 1996

OUTFLOW BNDRY FRM ERLY MRNG CONVECTION LYING ACRS EXTRM ERN CA/SRN
NV AND NW AZ THS AFTN ACTING AS MAIN FOCUSING AREA FOR TSTMS ATTM.
88D INDICATED TRAINING ECHOES IN ERLY STORMS OVR AZ ZN 3...SO A FFA
WAS ISSUED FOR THE NW DSRTS TIL 9 PM.  TSTMS ALNG CO RVR SHUD MOVE
INTO FFA RGN LTR THIS AFTN/EVNG.  OTHW SOM CU OVR S CNTRL NV WITH
TSTMS ALNG THE UT BRDR.  DATA DLAD TDA AND LOOKING AT LAST NGTS
DATA PERSISTENCE BEST BET.  MDLS INSIST LOW LVL TO RMN IN PLACE
ACRS XTRM SRN NV/NW AZ SO WL CONT MENTION OF SHWRS/TSTMS OVR
WEEKEND.  DRIER/STBL AIRMASS WL BE IN PLACE ACRS S C,NTRL NV.
HGTS/THKN RISE SLOLY FOR WRMR TEMPS ON SUN.  LAS 1110.  PIERCE

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 6, 12:26 PM MSTSevere Thunderstorm WarningVEFMohave64 min
Sep 6, 12:59 PM MSTFlash Flood WarningVEFMohave61 min
Sep 6, 12:59 PM MSTSevere Thunderstorm WarningVEFMohave61 min
Sep 6, 2:06 PM MSTFlash Flood WarningVEFMohave69 min
Sep 6, 2:06 PM MSTSevere Thunderstorm WarningVEFMohave69 min
Sep 6, 3:18 PM MSTSevere Thunderstorm WarningVEFMohave57 min
Sep 6, 4:17 PM MSTFlash Flood WarningVEFMohave58 min
Sep 6, 4:17 PM MSTSevere Thunderstorm WarningVEFMohave58 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; radar from the NEXRAD Level II archive.