Alert archive / Arizona / Flash Flood Warnings in 2003

Flash Flood Warning 6, NWS Las Vegas, NV

July 25, 2003Mohave County, Arizona

NWS Las Vegas, NV issued this flash flood warning at Jul 25, 2003, 1:31 PM MST for Mohave County, Arizona. It was in force for 59 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 25, 2003, 1:31 PM MST (20:31 UTC)
Expired: Jul 25, 2003, 2:30 PM MST
In force: 59 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), 128 km from the middle of the area, began a volume at 20:32 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, 8.5 hours before the alert went out and 162 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: 294 J/kg
Mixed-layer CIN: -88 J/kg
Mixed-layer LCL: 1384 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: 12 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 252039
FFWVEF
AZC015-252230-

BULLETIN - EAS ACTIVATION REQUESTED...CORRECTION
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LAS VEGAS NV
131 PM MST FRI JUL 25 2003

THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A

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

* UNTIL 330 PM MST

* AT 135 PM MST NATIONAL WEATHER SERVICE RADAR INDICATED A BAND OF   
  VERY HEAVY RAIN WAS OCCURING FROM 10 MILES SOUTH OF PEACH SPRINGS  
  NORTHWARD TO 30 MILES NORTH OF PEACH SPRINGS. THE ENTIRE AREA OF   
  RAIN IS MOVING SLOWLY TO THE NORTHWEST AT 10 MPH.

THE PEACH SPRINGS POLICE DEPARTMENT REPORTS THAT DIAMOND CREEK IS 
CURRENTLY FLOODING AND WATER IS FLOWING OVER ROUTE 18. HEAVY RAIN 
WILL CONTINUE IN THE REGION THROUGH 2 PM.

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 3585 11371 3535 11341 3554 11308 3608 11346

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 25, 11:23 AM MST	Severe Thunderstorm Warning	VEF	Mohave	52 min
Jul 25, 12:50 PM MST	Severe Thunderstorm Warning	VEF	Mohave	55 min
Jul 25, 1:22 PM MST	Severe Thunderstorm Warning	VEF	Mohave	38 min
Jul 25, 2:02 PM MST	Severe Thunderstorm Warning	VEF	Mohave	28 min
Jul 25, 3:30 PM MST	Flash Flood Warning	VEF	Mohave	60 min

Nearby

Flash Flood Warnings in Arizona, 2003 Every 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.