Alert archive / Arizona / Flash Flood Warnings in 2005

Flash Flood Warning 39, NWS Las Vegas, NV

August 3, 2005Mohave County, Arizona

NWS Las Vegas, NV issued this flash flood warning at Aug 3, 2005, 5:45 AM MST for Mohave County, Arizona. It was in force for 90 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Aug 3, 2005, 5:45 AM MST (12:45 UTC)
Expired
Aug 3, 2005, 7:15 AM MST
In force
90 min
Issued by
NWS Las Vegas, NV
Area
Counties, with a storm outline in the text

County Mohave County, AZ

The radar

The Las Vegas radar (KESX), 71 km from the middle of the area, began a volume at 12:45 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

Mercury/Desert R, NV (KDRA), launched 12:00Z, 0.8 hours before the alert went out and 213 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, Mercury/Desert R, NV at 12:00Z on 2005-08-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 629 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Mercury/Desert R, NV at 12:00Z on 2005-08-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 19 square meters per square second.193958Sfc1 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
629 J/kg
Mixed-layer CIN
-154 J/kg
Mixed-layer LCL
1765 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
19 m²/s²
0-3 km storm-relative helicity
41 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 
WGUS55 KVEF 031246
FFWVEF
AZC015-031415-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LAS VEGAS NV
545 AM PDT WED AUG 3 2005

THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS EXTENDED THE 

* FLASH FLOOD WARNING FOR...
  WEST CENTRAL MOHAVE COUNTY IN NORTHWEST ARIZONA

* UNTIL 715 AM MST

* AT 534 AM MST...LOCAL LAW ENFORCEMENT OFFICIALS REPORTED FLASH 
  FLOODING WAS STILL OCCURRING FROM THUNDERSTORMS THAT DUMPED HEAVY
  RAIN OVERNIGHT AROUND THE BULLHEAD CITY AREA. THE STORMS HAD
  DISSIPATED AND LITTLE ADDITIONAL RAINFALL IS EXPECTED. HOWEVER...
  FLOODING WILL CONTINUE TO OCCUR AND AFFECT SEVERAL ROADS 
  AROUND BULLHEAD CITY EARLY THIS MORNING.

FLOODING IS OCCURRING OR IS IMMINENT. MOST FLOOD RELATED DEATHS OCCUR
IN AUTOMOBILES. DO NOT ATTEMPT TO CROSS WATER COVERED BRIDGES...
DIPS...OR LOW WATER CROSSINGS. NEVER TRY TO CROSS A FLOWING STREAM...
EVEN A SMALL ONE...ON FOOT. TO ESCAPE RISING WATER MOVE UP TO HIGHER
GROUND.

LAT...LON 3508 11457 3507 11441 3525 11440 3524 11455

$$

JGA
1 follow-up statement
000
WGUS75 KVEF 031401
FFSVEF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
652 AM PDT WED AUG 3 2005

AZC015-031402-
MOHAVE AZ-
700 AM PDT WED AUG 3 2005

...THE FLASH FLOOD WARNING FOR WEST CENTRAL MOHAVE COUNTY IS
CANCELLED...

SIGNIFICANT RAINFALL ENDED OVER THE BULLHEAD CITY AREA BEFORE 6 AM 
AND RUNOFF HAS BEEN RECEDING AND THE THREAT OF SIGNIFICANT FLOODING 
HAS ENDED. THE MOHAVE VALLEY HIGHWAY HAD REOPENED HOWEVER A FEW 
OTHER SECONDARY ROADS HAVE BEEN DAMAGED AND ROAD CREWS WILL BE 
MAKING REPAIRS THIS MORNING. MOTORISTS TRAVELING AROUND THE BULLHEAD 
CITY AREA SHOULD BE PREPARED TO FIND ALTERNATE ROUTES DUE TO ROAD 
CLOSURES OR WATER AND DEBRIS POSSIBLY MAKING ROADS IMPASSABLE THIS 
MORNING.

LAT...LON 3508 11457 3507 11441 3525 11440 3524 11455

$$

JGA

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 2, 5:04 PM MSTSevere Thunderstorm WarningVEFMohave44 min
Aug 2, 5:34 PM MSTSevere Thunderstorm WarningVEFMohave41 min
Aug 3, 1:07 AM MSTSevere Thunderstorm WarningVEFMohave40 min
Aug 3, 3:44 AM MSTFlash Flood WarningVEFMohave2 hr

Nearby

Flash Flood Warnings in Arizona, 2005Every flash flood warning in 2005

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.