Alert archive / Arizona / Flash Flood Warnings in 1996

Flash Flood Warning 43, NWS Las Vegas, NV

September 6, 1996Mohave County, Arizona

NWS Las Vegas, NV issued this flash flood warning at Sep 6, 1996, 12:59 PM MST for Mohave County, Arizona. It was in force for 61 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, 12:59 PM MST (19:59 UTC)
Expired
Sep 6, 1996, 2:00 PM MST
In force
61 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 20:01 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, 8.0 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 062002
FFWLAS
AZC015-062100-
 
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM AND FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LAS VEGAS NV
1259 PM PDT (1259 PM MST) FRI SEP 6 1996
 
THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A
SEVERE THUNDERSTORM AND FLASH FLOOD WARNING
EFFECTIVE UNTIL  200 PM PDT (200 PM MST)
FOR PEOPLE IN THE FOLLOWING LOCATIONS......
 
IN NORTHWEST ARIZONA
 
   ...EASTERN MOHAVE COUNTY
 
AT 1257 PM PDT (MST)...LAS VEGAS DOPPLER RADAR INDICATED A SEVERE
THUNDERSTORM LOCATED 11 MILES NORTHWEST OF WIKIEUP AND MOVING
NORTHEAST AT 10 MPH.  THIS STORM IS LIKELY PRODUCING HAIL AND
WILL BE MOVING ACROSS HIGHWAY 93 APPROXIMATELY 12 MILES NORTH
OF WIKIEUP DURING THE NEXT 15 MINUTES OR SO.
 
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 RAIN
S FLOOD ROADS QUICKLY SO
DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.
 
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, 8:59 AM MST, 4 hours earlier.

Area forecast discussion, Sep 6, 8:59 AM MST, 4 hours before
MOJAVE DESERT/SOUTHERN GREAT BASIN AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAS VEGAS NV
858 AM PDT FRI SEP 6 1996

PRBLMS W/SUPER COMPUTER BACK E THANKS TO T.S FRAN...SO MDLS DLAD.
ALSO LOCAL PRBLM WITH NTRANS SO 12Z RUC UNAVBL.  WX WISE...88D
DETECTG A FEW SHWRS/TSTMS ALNG NV/AZ BRDR XNTND E INTO NW AZ AHD OF
S/WV OVR SRN GRT BASIN THIS MRNG.  LAST NGTS MDLS DEPICT SVRL WK
IMPULSES WL CONT TO ROTATE THRU TROF LTR THIS AFTN/TNGT AND SAT
WHICH AGN COULD ENHANCE CONVECTION OVR ERN HLF OF CWA WHERE LOW LVL
MSTR WL RMN PLENTIFUL.  FCST WORDED THAT WAY ATTM AND ONLY MINOR
CHGS MADE.  LAS 111.  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 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 MSTFlash Flood WarningVEFMohave57 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.