Alert archive / Arizona / Flash Flood Warnings in 2005

Flash Flood Warning 21, NWS Las Vegas, NV

July 26, 2005Mohave County, Arizona

NWS Las Vegas, NV issued this flash flood warning at Jul 26, 2005, 4:47 PM MST for Mohave County, Arizona. It was in force for 118 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: Jul 26, 2005, 4:47 PM MST (23:47 UTC)
Expired: Jul 26, 2005, 6:45 PM MST
In force: 118 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), 30 km from the middle of the area, began a volume at 23:51 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, 11.8 hours before the alert went out and 149 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 284 J/kg
Mixed-layer CIN: -155 J/kg
Mixed-layer LCL: 2499 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: 23 m²/s²
0-3 km storm-relative helicity: 5 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 262349
FFWVEF
AZC015-270145-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LAS VEGAS NV
447 PM PDT TUE JUL 26 2005

THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A

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

* UNTIL 645 PM PDT(645 PM MST)

* AT 440 PM PDT(440 PM MST)...NATIONAL WEATHER SERVICE DOPPLER       
  RADAR INDICATED HEAVY RAIN WHICH WILL LEAD TO FLASH FLOODING       
  FROM A THUNDERSTORM BETWEEN WILLOW BEACH AND HIGHWAY 93 OVER       
  EXTREME WEST CENTRAL MOHAVE COUNTY.

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF DRY 
WASHES AND STREAMS.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY.
MOVE TO HIGHER GROUND.

LAT...LON 3586 11458 3594 11466 3586 11467 3582 11464

$$

PIERCE

2 follow-up statements

000
WGUS75 KVEF 270028
FFSVEF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
524 PM PDT TUE JUL 26 2005

AZC015-270145-
MOHAVE AZ-
524 PM PDT TUE JUL 26 2005

...A FLASH FLOOD WARNING CONTINUES UNTIL 645 PM PDT(645 PM MST) FOR
EXTREME WEST CENTRAL MOHAVE COUNTY...

AT 514 PM PDT(514 PM MST)...LAKE MEAD NATIONAL RECREATION DISPATCH 
REPORTED RUNOFF WAS OCCURRING ON THE ROADWAY LEADING TO WILLOW 
BEACH...BUT THE ROAD WAS STILL OPEN. RADAR ESTIMATED BETWEEN 1.00 
AND 1.50 INCHES OF RAIN NORTHEAST OF WILLOW BEACH. RUNOFF FROM THE 
STORM WILL CONTINUE FOR ANOTHER HOUR SO THE FLASH FLOOD WARNING WILL 
CONTINUE UNTIL 645 PM PDT.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY.
MOVE TO HIGHER GROUND.

LAT...LON 3586 11458 3594 11466 3586 11467 3582 11464

$$

PIERCE

000
WGUS75 KVEF 270137
FFSVEF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
636 PM PDT TUE JUL 26 2005

AZC015-270146-
MOHAVE AZ-
636 PM PDT TUE JUL 26 2005

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

SHOWERS AND THUNDERSTORMS THAT WERE IMPACTING THE AREA IN AND AROUND 
WILLOW BEACH HAVE DIMINISHED AND ARE NO LONGER A THREAT...THEREFORE 
THE FLASH FLOOD WARNING FOR EXTREME WEST CENTRAL MOHAVE COUNTY HAS 
BEEN CANCELLED. 

LAT...LON 3586 11458 3594 11466 3586 11467 3582 11464

$$
SC

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 26, 1:34 PM MST	Severe Thunderstorm Warning	VEF	Mohave	38 min
Jul 26, 3:18 PM MST	Severe Thunderstorm Warning	VEF	Mohave	42 min
Jul 26, 4:14 PM MST	Severe Thunderstorm Warning	VEF	Mohave	49 min
Jul 26, 4:54 PM MST	Severe Thunderstorm Warning	VEF	Mohave	51 min

Nearby

Flash Flood Warnings in Arizona, 2005 Every 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.