Alert archive / Arizona / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 35, NWS Las Vegas, NV

August 9, 1997Mohave County, Arizona

NWS Las Vegas, NV issued this severe thunderstorm warning at Aug 9, 1997, 1:24 AM MST for Mohave County, Arizona. It was in force for 66 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, 1:24 AM MST (08:24 UTC)
Expired: Aug 9, 1997, 2:30 AM MST
In force: 66 min
Issued by: NWS Las Vegas, NV
Area: Whole counties

County Mohave County, AZ

The radar

The Las Vegas radar (KESX), 102 km from the middle of the area, began a volume at 08:26 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 00:00Z, 8.4 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-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: 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, 3 hours 35 minutes earlier.

Area forecast discussion, Aug 8, 9:49 PM MST, 3 hours 35 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

In the hours before

Local storm report, Aug 9, 1:09 AM MST, 15 minutes before

STORM REPORT
NATIONAL WEATHER SERVICE LAS VEGAS, NV
109 AM PDT SAT AUG 09 1997

TIME(PDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

1135 PM    LAKE HAVASU CITY          AZ   60 MPH TSTM GUST
08/08/97   MOHAVE                         MOHAVE COUNTY S.O.
                                          REPORTED WIND GUSTS AROUND
                                          60 MPH AND VISIBILITIES
                                          NEAR ZERO IN BLOWING DUST
                                          IN LAKE HAVASU CITY.

1135 PM    BULLHEAD CITY             AZ   75 MPH TSTM GUST
08/08/97   MOHAVE                         MOHAVE COUNTY S.O.
                                          REPORTED A WIND GUST TO 75
                                          MPH 15 S OF BULLHEAD CITY.

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 8, 11:30 PM MST	Severe Thunderstorm Warning	VEF	Mohave	60 min
Aug 9, 12:29 AM MST	Flash Flood Warning	VEF	Mohave	61 min
Aug 9, 12:29 AM MST	Severe Thunderstorm Warning	VEF	Mohave	61 min
Aug 9, 1:24 AM MST	Flash Flood Warning	VEF	Mohave	66 min

Nearby

Severe Thunderstorm Warnings in Arizona, 1997 Every 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; radar from the NEXRAD Level II archive.