Alert archive / Arizona / Flash Flood Warnings in 2004

Flash Flood Warning 1, NWS Las Vegas, NV

July 26, 2004Mohave County, Arizona

NWS Las Vegas, NV issued this flash flood warning at Jul 26, 2004, 6:29 AM MST for Mohave County, Arizona. It was in force for 45 days. 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, 2004, 6:29 AM MST (13:29 UTC)
Expired: Sep 8, 2004, 6:30 PM MST
In force: 45 days
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), 79 km from the middle of the area, began a volume at 13:33 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

Flgstf/Belemont, AZ (KFGZ), launched 12:00Z, 1.5 hours before the alert went out and 206 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: 747 J/kg
Mixed-layer CIN: -69 J/kg
Mixed-layer LCL: 952 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: -45 m²/s²
0-3 km storm-relative helicity: -10 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 261332
FFWVEF
AZC015-261530-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LAS VEGAS NV
629 AM MST MON JUL 26 2004

THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A

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

* UNTIL 830 AM MST

* AT 628 AM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR ESTIMATES   
  INDICATED 3 TO 4 INCHES OF RAINFALL FROM A LINE OF THUNDERSTORMS   
  OVER CENTRAL MOHAVE COUNTY...FROM 10 MILES NORTHEAST OF DOLAN      
  SPRINGS TO 20 MILES NORTHEAST OF CHLORIDE...THE LINE WAS MOVING    
  TO THE SOUTHEAST AT 5 MPH.

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

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY
AUTOMOBILE.

TO REPORT FLOODING...HAVE THE NEAREST LAW ENFORCEMENT AGENCY RELAY
YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN LAS
VEGAS.

LAT...LON 3583 11411 3569 11425 3534 11391 3552 11370

$$

SC

1 follow-up statement

000 
WGUS55 KVEF 082336
FFWVEF
AZC015-090130-
/X.NEW.KVEF.FF.W.0001.040908T2330Z-040909T0130Z/
/0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LAS VEGAS NV
430 PM MST WED SEP 8 2004

THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A

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

* UNTIL 630 PM MST

* AT 430 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  A THUNDERSTORMS NEARLY STATIONARY JUST SOUTHWEST OF THE ALAMO       
  CROSSINGS ROAD AND PLANET RANCH ROAD IN RURAL SOUTH CENTRAL MOHAVE 
  COUNTY. RUNOFF FROM THE STORMS WILL IMPACT THE BUCK SPRINGS        
  WASH AND THE CASTANEDA WASH.

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL 
CREEKS AND STREAMS AND COUNTRY ROADS.

IN HILLY TERRAIN THERE ARE HUNDREDS OF LOW WATER CROSSINGS WHICH ARE
POTENTIALLY DANGEROUS IN HEAVY RAIN. DO NOT ATTEMPT TO TRAVEL ACROSS
FLOODED ROADS. FIND ALTERNATE ROUTES. IT ONLY TAKES A FEW INCHES OF
SWIFTLY FLOWING WATER TO CARRY VEHICLES AWAY.

LAT...LON 3427 11402 3426 11362 3470 11373 3471 11410

$$

PIERCE

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 26, 3:27 PM MST	Severe Thunderstorm Warning	VEF	Mohave	63 min

Nearby

Flash Flood Warnings in Arizona, 2004 Every flash flood warning in 2004

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.