Alert archive / Arizona / Flash Flood Warnings in 2003

Flash Flood Warning 42, NWS Las Vegas, NV

August 26, 2003Mohave County, Arizona

NWS Las Vegas, NV issued this flash flood warning at Aug 26, 2003, 3:15 PM MST for Mohave County, Arizona. It was in force for 3 hr. 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 26, 2003, 3:15 PM MST (22:15 UTC)
Expired
Aug 26, 2003, 6:15 PM MST
In force
3 hr
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), 76 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

Mercury/Desert R, NV (KDRA), launched 12:00Z, 10.3 hours before the alert went out and 218 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 2003-08-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 409 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, Mercury/Desert R, NV at 12:00Z on 2003-08-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -49 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
409 J/kg
Mixed-layer CIN
-158 J/kg
Mixed-layer LCL
2310 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
-49 m²/s²
0-3 km storm-relative helicity
84 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

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

000 
WGUS55 KVEF 262214
FFWVEF
AZC015-270215-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LAS VEGAS NV
315 PM MST TUE AUG 26 2003

THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A

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

* UNTIL 715 PM MST

* AT 310 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
  TWO THUNDERSTORMS WITH VERY HEAVY RAIN. THE FIRST...3 MILES EAST 
  OF GOLDEN VALLEY...AND THE 2ND ALONG HIGHWAY 93...20 MILES 
  NORTHWEST OF KINGMAN. BOTH STORMS SHOWED LITTLE MOVEMENT.

* THE THUNDERSTORMS WITH EXCESSIVE RAINFALL WILL BE...
  NEAR GOLDEN VALLEY THROUGH 400 PM MST
  ALONG HIGHWAY 93 NORTHWEST OF KINGMAN THROUGH 400 PM MST

LOCATIONS IN THE SACRAMENTO WASH SOUTH OF GOLDEN VALLEY AND HIGHWAY 
93 NORTHWEST OF KINGMAN ARE THE MOST LIKELY AREAS TO SEE FLOODING 
FROM THESE STORMS.

NEVER DRIVE YOUR VEHICLE INTO AREAS WHERE WATER COVERS THE ROADWAY.
IT ONLY TAKES A FOOT OR TWO OF FLOWING WATER TO WASH MOST CARS AWAY.
VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY.

LAT...LON 3522 11439 3502 11431 3502 11419 3511 11407
          3535 11415 3555 11435 3541 11436

$$

Nearby

Flash Flood Warnings in Arizona, 2003Every flash flood warning in 2003

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.