Alert archive / Arizona / Flash Flood Warnings in 2007

Flash Flood Warning 2, NWS Las Vegas, NV

July 24, 2007Mohave County, Arizona

NWS Las Vegas, NV issued this flash flood warning at Jul 24, 2007, 1:21 PM MST for Mohave County, Arizona. It took effect at Jul 24, 2007, 1:27 PM MST. It was in force for 108 min. 1 report 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 24, 2007, 1:21 PM MST (20:21 UTC)
In effect from
Jul 24, 2007, 1:27 PM MST
Expired
Jul 24, 2007, 3:15 PM MST
In force
108 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 20:22 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 24, 1:40 PM MSTFLASH FLOODPeach Springs, AZEXCESSIVE STORM RUNOFF CROSSING ROUTE 66 NEAR PEACH SPRINGS.

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, 8.4 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 2007-07-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 119 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Flgstf/Belemont, AZ at 12:00Z on 2007-07-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -18 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
119 J/kg
Mixed-layer CIN
-46 J/kg
Mixed-layer LCL
1128 m above ground
0-6 km bulk shear
8 kt
0-1 km storm-relative helicity
-18 m²/s²
0-3 km storm-relative helicity
6 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 242027 CCA
FFWVEF
AZC015-242215-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LAS VEGAS NV
121 PM MST TUE JUL 24 2007

THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A

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

* UNTIL 315 PM MST.

* AT 116 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  FLASH FLOODING FROM A THUNDERSTORM OVER THE WARNED AREA.

* THE STORM PRODUCING FLASH FLOODING WILL REMAIN OVER MAINLY RURAL 
  AREAS OF THE INDICATED COUNTY AND NEAR THE COMMUNITY OF PEACH 
  SPRINGS.

AT 120 PM MST NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED VERY 
HEAVY RAINFALL CONTINUING JUST TO THE EAST OF PEACH SPRINGS. RADAR 
ESTIMATES THAT THESE STORMS MAY HAVE PRODUCED UP TO 2 INCHES OF RAIN 
OVER THE PAST HOUR. PERSONS IN THE AREA AND THOSE TRAVELING ALONG 
STATE ROUTE 66 OR THE PEACH SPRINGS CANYON ROAD MAY ENCOUNTER 
DANGEROUS DRIVING CONDITIONS.

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.

THIS STATEMENT REPLACES THE FLOOD ADVISORY THAT WAS PREVIOUSLY 
ISSUED.

LAT...LON 3570 11332 3554 11332 3551 11343 3570 11345

$$
BELL

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 23, 8:30 PM MSTFlash Flood WatchVEFMohave6 hr
Jul 24, 9:01 AM MSTFlash Flood WatchVEFMohave13 hr
Jul 24, 1:21 PM MSTFlash Flood WarningVEFMohave114 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.