Alert archive / Arizona / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 34, NWS Las Vegas, NV

August 9, 1997Mohave County, Arizona

NWS Las Vegas, NV issued this severe thunderstorm warning at Aug 9, 1997, 12:29 AM MST for Mohave County, Arizona. It was in force for 61 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Aug 9, 1997, 12:29 AM MST (07:29 UTC)
Expired
Aug 9, 1997, 1:30 AM MST
In force
61 min
Issued by
NWS Las Vegas, NV
Area
Whole counties

County Mohave County, AZ

The nearest sounding before it

Flgstf/Belemont, AZ (KFGZ), launched 00:00Z, 7.5 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 00:00Z on 1997-08-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Flgstf/Belemont, AZ at 00:00Z on 1997-08-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -15 square meters per square second.193958Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1807 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
-15 m²/s²
0-3 km storm-relative helicity
11 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

What forecasters said that day

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

NWS Las Vegas, NV wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 8, 9:49 PM MST, 2 hours 40 minutes earlier.

Area forecast discussion, Aug 8, 9:49 PM MST, 2 hours 40 minutes before
MOJAVE DESERT/SOUTHERN GREAT BASIN AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAS VEGAS NV
930 PM PDT FRI AUG 8 1997

KESX RADAR SHOWED THE MOST INTENSE TRW NOW ACRS ERN MOHAVE COUNTY N
OF INTERSTATE 40.  OTHER LESS INTENSE ACTIVITY WAS LIFTING NE ACRS
PTNS OF S CNTRL NEVADA.  UPDATED ALL ZONES TO REFLECT A TREND
TOWARD TRW DYING OUT ACRS S CNTRL NEVADA BY MIDNIGHT BUT CONTINUING
ACRS MAINLY ERN PTNS OF MOHAVE COUNTY ARIZONA THRU MOST OF THE
NIGHT DUE TO NEW DEVELOPMENT WITH MERGERS AND OUTFLOW BOUNDARY
INTERACTIONS. BRIEFLY LOOKED AT 00Z PROGS. THEY DID INDICATE SOME
SORT OF GRADUAL DRYING TREND...WHICH IS REFLECTED IN THE CURRENT
FSCT PACKAGE. NEW FSCT PACKAGE REFLECTING FIRST PD UPDlATES FOR ALL
ZONES ALREADY OUT.  LAS0100  MATUSIEWICZ

SRN NV...NONE
ERN CA...NONE
NW AZ ...NONE

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 8, 11:30 PM MSTSevere Thunderstorm WarningVEFMohave60 min
Aug 9, 12:29 AM MSTFlash Flood WarningVEFMohave61 min
Aug 9, 1:24 AM MSTFlash Flood WarningVEFMohave66 min
Aug 9, 1:24 AM MSTSevere Thunderstorm WarningVEFMohave66 min

Nearby

Severe Thunderstorm Warnings in Arizona, 1997Every severe thunderstorm warning in 1997

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.