Alert archive / Arizona / Flash Flood Warnings in 1995

Flash Flood Warning 25, NWS Phoenix, AZ

August 12, 1995Mohave County, Arizona

NWS Phoenix, AZ issued this flash flood warning at Aug 12, 1995, 5:34 PM MST for Mohave County, Arizona. It was in force for 56 min.

The area

The counties it named.

The facts

Issued
Aug 12, 1995, 5:34 PM MST (00:34 UTC)
Expired
Aug 12, 1995, 6:30 PM MST
In force
56 min
Issued by
NWS Phoenix, AZ
Area
Whole counties

County Mohave County, AZ

The nearest sounding before it

Mercury/Desert R, NV (KDRA), launched 00:00Z, 0.6 hours before the alert went out and 226 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, Mercury/Desert R, NV at 00:00Z on 1995-08-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 6 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Mercury/Desert R, NV at 00:00Z on 1995-08-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -6 square meters per square second.19395878Sfc1 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
6 J/kg
Mixed-layer CIN
-160 J/kg
Mixed-layer LCL
3390 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
-6 m²/s²
0-3 km storm-relative helicity
14 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 
TTAA00 KLAS 130036
FFWLAS
AZC015-NVC003-130130-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LAS VEGAS NV
534 PM PDT SAT AUG 12 1995
 
THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  630 PM PDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...S...
 
IN NORTHWEST ARIZONA
 
   ...EXTREME WEST CENTRAL MOHAVE COUNTY
 
 
IN SOUTH NEVADA
 
   ...EXTREME EAST CENTRAL CLARK COUNTY INCLUDING THE LAKE MEAD
RECREATION AREA...
 
AT 530 PM LAS VEGAS DOPPLER RADAR CONTINUED TO SHOW VERY STRONG
THUNDERSTORMS OVER EXTREME EAST CENTRAL CLARK COUNTY OVER THE LAKE MEAD
RECREATION AREA MOVING INTO EXTREME WEST CENTRAL MOHAVE COUNTY ARIZONA.
THE STRONGEST THUNDERSTORMS WERE LOCATED IN THE WILLOW BEACH AREA AND 5
MILES NORTHEAST OF NELSON. AUTOMATED RAIN GAGES AND RADAR RAINFALL
ESTIMATES INDICATE RAINFALL AMOUNTS OF THREE-QUARTERS OF AN INCH TO ONE
INCH OVER THE PAST HOUR IN THE WILLOW BEACH AREA. THE THUNDERSTORMS WERE
MOVING TO THE EAST-NORTHEAST AT 25 MPH.
 
A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT.  IT'S
IMPORTANT TO KNOW WHERE YOU ARE RELATIVE TO STREAMS...RIVERS...OR
CREEKS WHICH CAN BECOME KILLERS IN HEAVY RAINS.  CAMPERS SjHOULD
AVOID CAMPING ALONG STREAMS OR CREEKS DURING THREATENING RAINS.
 
KOSIER

What forecasters said that day

The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Special weather statement, Aug 12, 5:15 PM MST, 19 minutes before
AZZ002-130300-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PHOENIX AZ
515 PM MST SAT AUG 12 1995

...STRONG THUNDERSTORMS MOVING ACROSS THE ARIZONA STRIP IN NORTHERN
MOHAVE COUNTY...

AT 5 PM...LAS VEGAS DOPPLER RADAR SHOWED STRONG THUNDERSTORMS
EXTENDING SOUTHWEST FROM 30 MILES WEST OF FREDONIA...TO TUWEEP...AND
SOUTH TO THE NATURAL BRIDGE IN GRAND CANYON NATIONAL PARK. A FEW OF
THESE STRONG THUNDERSTORMS WERE PRODUCING LOCALIZED AREAS OF HEAVY
RAIN EXCEEDING ONE INCH PER HOUR WITH STRONG GUSTY WINDS AND POSSIBLY
SOME BLOWING DUSTS. MOVEMENT OF THESE STORMS IS TO THE NORTHEAST AT
25 MPH AND CAN BE EXPECTED ACROSS THE REGION UNTIL AROUND 8 PM.

PERSONS IN THIS AREA SHOULD STAY ALERT FOR RAPIDLY CHANGING WEATHER
CONDITIONS AND PREPARED TO TAKE SHELTER AS THREATENING WEATHER
APPROACHES.

MITCHELL
Special weather statement, Aug 12, 5:19 PM MST, 15 minutes before
AZZ002-130300-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PHOENIX AZ
515 PM MST SAT AUG 12 1995

...STRONG THUNDERSTORMS MOVING ACROSS THE ARIZONA STRIP IN NORTHERN
MOHAVE COUNTY...

AT 5 PM...LAS VEGAS DOPPLER RADAR SHOWED STRONG THUNDERSTORMS
EXTENDING SOUTHWEST FROM 30 MILES WEST OF FREDONIA...TO TUWEEP...AND
SOUTH TO THE NATURAL BRIDGE IN GRAND CANYON NATIONAL PARK. A FEW OF
THESE STRONG THUNDERSTORMS WERE PRODUCING LOCALIZED AREAS OF HEAVY
RAIN EXCEEDING ONE INCH PER HOUR WITH STRONG GUSTY WINDS AND POSSIBLY
SOME BLOWING DUSTS. MOVEMENT OF THESE STORMS IS TO THE NORTHEAST AT
25 MPH AND CAN BE EXPECTED ACROSS THE REGION UNTIL AROUND 8 PM.

PERSONS IN THIS AREA SHOULD STAY ALERNT FOR RAPIDLY CHANGING WEATHER
CONDITIONS AND PREPARED TO TAKE SHELTER AS THREATENING WEATHER
APPROACHES.

MITCHELL

The office that day

Everything else NWS Phoenix, AZ issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 13, 4:22 PM MSTFlash Flood WarningPSRPinal113 min

Nearby

Flash Flood Warnings in Arizona, 1995Every flash flood warning in 1995

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.