Alert archive / Arizona / Flash Flood Warnings in 2007

Flash Flood Warning 9, NWS Las Vegas, NV

July 25, 2007Mohave County, Arizona

NWS Las Vegas, NV issued this flash flood warning at Jul 25, 2007, 1:04 PM MST for Mohave County, Arizona. It was in force for 116 min. 2 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Jul 25, 2007, 1:04 PM MST (20:04 UTC)
Expired
Jul 25, 2007, 3:00 PM MST
In force
116 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 20:04 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.

What was reported inside it

TimeReportWhereRemark
Jul 25, 1:50 PM MSTFLASH FLOODNew Kingman-Butler, AZROAD IMPASSIBLE ACROSS SEVERAL LOCATIONS ON STOCKENHILLS RD DUE TO DEBREE BEING WASHED ACROSS THE ROAD.
Jul 25, 2:00 PM MSTFLASH FLOOD17 S Meadview, AZSOUTH PIECE FERRY RD NORTH OF DOALN SPRINGS, N. SIERRA RD, N. GEN RD, AND VAN NUYS ST CLOSED DUE TO DEBRIS AND WATER ACROSS THE ROAD.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Flgstf/Belemont, AZ (KFGZ), launched 12:00Z, 8.1 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 2007-07-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 180 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 2007-07-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -34 square meters per square second.1939Sfc1 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
180 J/kg
Mixed-layer CIN
-55 J/kg
Mixed-layer LCL
1053 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
-34 m²/s²
0-3 km storm-relative helicity
-18 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 252006
FFWVEF
AZC015-252200-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LAS VEGAS NV
104 PM MST WED JUL 25 2007

THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A

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

* UNTIL 300 PM MST.

* AT 1252 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR 
  INDICATED VERY HEAVY RAIN WHICH COULD LEAD TO FLASH FLOODING FROM 
  A THUNDERSTORM OVER WEST CENTRAL MOHAVE COUNTY...NEAR THE 
  INTERSECTION OF ANTARES ROAD AND PIERCE FERRY ROAD...OR ABOUT 17 
  MILES SOUTH OF MEADVIEW. THE STORM WAS MOVING WEST AT 5 MPH.

* THE STORM PRODUCING FLASH FLOODING WILL REMAIN OVER MAINLY RURAL
  AREAS OF THE INDICATED COUNTY.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE WATER COVERS THE ROADWAY.
THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS SAFELY.
TURN AROUND...DONT DROWN.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY. DO
NOT ATTEMPT TO CROSS SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN
DEPTH BY FOOT OR BY AUTOMOBILE. TURN AROUND...DONT DROWN.

LAT...LON 3570 11406 3585 11408 3583 11427 3566 11425

$$
ASG
1 follow-up statement
000
WGUS75 KVEF 252056
FFSVEF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
154 PM PDT WED JUL 25 2007

AZC015-252200-
MOHAVE AZ-
154 PM MST WED JUL 25 2007

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 300 PM MST FOR
CENTRAL MOHAVE COUNTY...

AT 144 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE A THUNDERSTORM PRODUCING VERY HEAVY RAIN OVER CENTRAL 
MOHAVE COUNTY. FLOODING IS LIKELY OCCURRING ALONG PIERCE FERRY ROAD 
FROM DOLAN SPRINGS TO ANTARES ROAD. THIS STORM WAS MOVING WEST AT 5 
MPH.

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. MOVE TO HIGHER GROUND.

LAT...LON 3570 11406 3585 11408 3583 11427 3566 11425

$$

ASG

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 24, 7:13 PM MSTFlash Flood WarningVEFMohave2 hr
Jul 25, 9:56 AM MSTFlash Flood WatchVEFMohave11 hr
Jul 25, 1:37 PM MSTFlash Flood WarningVEFMohave113 min
Jul 25, 2:41 PM MSTFlash Flood WarningVEFMohave94 min
Jul 25, 3:13 PM MSTFlash Flood WarningVEFMohave92 min
Jul 25, 3:34 PM MSTSevere Thunderstorm WarningVEFMohave28 min
Jul 25, 3:53 PM MSTSevere Thunderstorm WarningVEFMohave67 min
Jul 25, 4:15 PM MSTFlash Flood WarningVEFMohave90 min
Jul 25, 4:24 PM MSTSevere Thunderstorm WarningVEFMohave51 min

Nearby

Flash Flood Warnings in Arizona, 2007Every flash flood warning in 2007

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.