Alert archive / Arizona / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 52, NWS Las Vegas, NV

August 26, 1997Mohave County, Arizona

NWS Las Vegas, NV issued this severe thunderstorm warning at Aug 26, 1997, 6:31 PM MST for Mohave County, Arizona. It was in force for 119 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 26, 1997, 6:31 PM MST (01:31 UTC)
Expired
Aug 26, 1997, 8:30 PM MST
In force
119 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, 1.5 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 1997-08-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1 joules per kilogram.LCLLFCEL10008507005003002001001 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 1997-08-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 14 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
1 J/kg
Mixed-layer CIN
-168 J/kg
Mixed-layer LCL
1763 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
14 m²/s²
0-3 km storm-relative helicity
-18 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 26, 2:16 PM MST, 4 hours 15 minutes earlier.

Area forecast discussion, Aug 26, 2:16 PM MST, 4 hours 15 minutes before
MOJAVE DESERT/SOUTHERN GREAT BASIN AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAS VEGAS NV
215 PM PDT TUE AUG 26 1997

WATER VAPOR LOOP THIS AFTERNOON SHOWED A DRY SW FLO DOMINATING ACRS
A VAST MAJORITY OF THE CWA. ONLY MOHAVE COUNTY IN NORTHWEST ARIZONA
WAS ON THE EDGE OF THE DEEP MONSOONAL FLO. KESX RADAR SHOWED AN
ISOLD RW/TRW CELL IN THE WIKIEUP VCNTY AND ANOTHER NEAR THE KAIBAB
INDIAN RESERVATION. THE 12Z NGM AND AVN WERE SIMILAR IN DEPICTING A
W TO E DRYING TREND EVEN ACRS MOHAVE COUNTY OVER THE NEXT 24 TO 48
HRS. ETA KEPT MSTR VALUES CRITICAL FOR CONVECTION FARTHER W. PREFER
TO GO WITH THE MORE CONSERVATIVE ETA...WHICH WOULD DEPICT A
PERSISTENCE TYPE FORECAST. KEPT ISOLD AFTN/EVE TRW ACRS THE HIR
ELEVATIONS OF MOHAVE COUNTY THRU THU. WENT DRY ALL ANOTHER AREAS.
EXTND PROGS MAINTAIN AN UPR TROF ALG THE WEST CST AND BUILD AN UPR
RDG ACRS THE ERN U.S.. THIS SHOULD EFFECTIVELY MAINTAIN A DRY SW
FLO ACRS THE CWA. LAS 000. MATU(SIEWICZ

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 26, 6:31 PM MSTFlash Flood WarningVEFMohave119 min
Aug 27, 1:12 PM MSTFlash Flood WarningVEFMohave3 hr

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.