Alert archive / Arizona / Flash Flood Warnings in 2004
Flash Flood Warning 9, NWS Las Vegas, NV
NWS Las Vegas, NV issued this flash flood warning at Aug 14, 2004, 6:23 PM MST for Mohave County, Arizona; San Bernardino County, California. It was in force for 28 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
- Aug 14, 2004, 6:23 PM MST (01:23 UTC)
- Expired
- Sep 11, 2004, 4:45 PM MST
- In force
- 28 days
- Issued by
- NWS Las Vegas, NV
- Area
- Counties, with a storm outline in the text
Counties Mohave County, AZ, San Bernardino County, CA
The nearest sounding before it
Mercury/Desert R, NV (KDRA), launched 00:00Z, 1.4 hours before the alert went out and 189 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.
- Mixed-layer CAPE
- 8 J/kg
- Mixed-layer CIN
- -106 J/kg
- Mixed-layer LCL
- 2877 m above ground
- 0-6 km bulk shear
- 10 kt
- 0-1 km storm-relative helicity
- 9 m²/s²
- 0-3 km storm-relative helicity
- 67 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WGUS55 KVEF 150123 FFWVEF CAC071-150245- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE LAS VEGAS NV 623 PM PDT SAT AUG 14 2004 THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A * FLASH FLOOD WARNING FOR... EXTREME NORTHWESTERN SAN BERNARDINO COUNTY IN SOUTHEAST CALIFORNIA * UNTIL 745 PM PDT * AT 620 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED HEAVY RAIN AND FLASH FLOODING FROM A THUNDERSTORM OVER EXTREME NORTHWESTERN SAN BERNARDINO COUNTY NEAR THE INTERSECTION OF HIGHWAY 395 AND TRONA ROAD. ADDITIONAL RAINFALL AMOUNTS OF ONE-HALF TO ONE INCH WILL LIKELY PRODUCE FLASH FLOODING ALONG TRONA ROAD BETWEEN HIGHWAY 395 AND STATE ROUTE 178 UNTIL AT LEAST 745 PM. 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 3556 11761 3534 11762 3534 11744 3557 11749 $$ ADAIR
1 follow-up statement
000
WGUS55 KVEF 112146
FFWVEF
AZC015-112345-
/X.NEW.KVEF.FF.W.0009.040911T2143Z-040911T2345Z/
/0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LAS VEGAS NV
243 PM MST SAT SEP 11 2004
THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A
* FLASH FLOOD WARNING FOR...
NORTHEASTERN MOHAVE COUNTY IN NORTHWEST ARIZONA
THIS INCLUDES MT TRUMBULL...COLORADO CITY...AND PIPE SPRING
NATIONAL MONUMENT
* UNTIL 445 PM MST
* AT 240 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
FLASH FLOODING FROM THUNDERSTORMS ALONG A LINE EXTENDING FROM 28
MILES SOUTHWEST OF COLORADO CITY TO 35 MILES SOUTH OF PIPE
SPRING NATIONAL MONUMENT...MOVING NORTHEAST AT 15-20 MPH.
* THE STORMS PRODUCING FLASH FLOODING WILL OTHERWISE REMAIN OVER
MAINLY RURAL AREAS OF THE INDICATED COUNTY.
EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF WASHES
AND STREAMS...COUNTRY ROADS...AND CANYONS.
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY.
MOVE TO HIGHER GROUND.
LAT...LON 3700 11363 3630 11297 3637 11286 3648 11264
3698 11256
$$
RUNKThe office that day
Everything else NWS Las Vegas, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 14, 6:11 PM MST | Severe Thunderstorm Warning | VEF | San Bernardino | 34 min |
| Aug 14, 8:10 PM MST | Severe Thunderstorm Warning | VEF | San Bernardino | 35 min |
| Aug 15, 3:16 AM MST | Flash Flood Warning | VEF | Inyo, San Bernardino | 28 days |
| Aug 15, 11:04 AM MST | Severe Thunderstorm Warning | VEF | San Bernardino | 41 min |
| Aug 15, 11:14 AM MST | Flash Flood Warning | VEF | San Bernardino | 27 days |
| Aug 15, 12:15 PM MST | Flash Flood Warning | VEF | Inyo, San Bernardino | 27 days |
| Aug 15, 1:28 PM MST | Severe Thunderstorm Warning | VEF | San Bernardino | 47 min |
| Aug 15, 1:33 PM MST | Severe Thunderstorm Warning | VEF | San Bernardino | 42 min |
| Aug 15, 3:07 PM MST | Flash Flood Warning | VEF | San Bernardino | 113 min |
Nearby
Flash Flood Warnings in Arizona, 2004Flash Flood Warnings in California, 2004Every 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.