Alert archive / Arizona / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 1, NWS Las Vegas, NV

March 28, 1998Mohave County, Arizona

NWS Las Vegas, NV issued this severe thunderstorm warning at Mar 28, 1998, 11:35 AM MST for Mohave County, Arizona. It was in force for 45 min. 2 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Mar 28, 1998, 11:35 AM MST (18:35 UTC)
Expired
Mar 28, 1998, 12:20 PM MST
In force
45 min
Issued by
NWS Las Vegas, NV
Area
Whole counties

County Mohave County, AZ

What was reported inside it

TimeReportWhereRemark
Mar 28, 11:40 AM MSTThunderstorm WindKingman, AZ
Mar 28, 11:51 AM MSTThunderstorm WindKingman, AZ

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Mercury/Desert R, NV (KDRA), launched 12:00Z, 6.6 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 12:00Z on 1998-03-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1 joules per kilogram.LCLEL10008507005003002001001 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 12:00Z on 1998-03-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 161 square meters per square second.1939587897Sfc1 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
-4 J/kg
Mixed-layer LCL
1407 m above ground
0-6 km bulk shear
50 kt
0-1 km storm-relative helicity
161 m²/s²
0-3 km storm-relative helicity
180 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 281839 RRA
SVRLAS
AZC015-281920-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LAS VEGAS NV
1035 AM PST (1135 AM MST) SAT MAR 28 1998

THE NATIONAL WEATHER SERVICE IN LAS VEGAS NV HAS ISSUED A SEVERE
THUNDERSTORM WARNING EFFECTIVE UNTIL 1220 PM MST FOR PEOPLE IN THE
FOLLOWING LOCATIONS...

IN NORTHWEST ARIZONA

  ...CENTRAL MOHAVE COUNTY

AT 1135 AM MST...A LINE OF SEVERE THUNDERSTORMS EXTENDED FROM
LITTLEFIELD TO MEADVIEW TO TRUXTON.  THIS LINE WAS MOVING EAST AT
20 MPH BUT CELLS ALONG THE LINE WERE MOVING NORTHEAST AT 35 MPH.

THIS LINE IS EXPECTED TO MOVE THROUGH KINGMAN BETWEEN 1145 AM AND
1215 PM MST.  THUNDERSTORMS WITH HAIL UP TO 3/4 INCH AND WIND GUSTS
EXCEEDING 60 MPH ARE LIKELY IN THE KINGMAN AREA AS THESE STORMS
PASS THROUGH.

RUNK

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 Mar 28, 10:23 AM MST, 1 hour 12 minutes earlier.

Area forecast discussion, Mar 28, 10:23 AM MST, 1 hour 12 minutes before
MOJAVE DESERT/SOUTHERN GREAT BASIN AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAS VEGAS NV
923 AM PST SAT MAR 28 1998

WX CONTINUES TO BE VERY ACTIVE THIS MORNING WITH THE COLDEST/DEEPEST
STORM OF WINTER SEASON BEARING DOWN ON AREA (NOTE 12Z 5H TEMPS OF
-37 C AT PORTLAND AND -25 AT DRA).  1630Z RADAR/STLT INDCS HEAVIEST
PCPN WITH EMBEDDED TSTMS EXTENDING FROM LINCOLN COUNTY SOUTH TO LAKE
MEAD RECREATION AREA.  REPORTS OF HEAVY SNOW DOWN TO LAKE LVL AT
COTTONWOOD COVE...PEA SIZED HAIL TO A DEPTH OF TWO INCHES AT
CAL-NEV-ARI...7 INCHES OF NEW SNOW AT MT. CHARLESTON AND HEAVY SNOW
ACROSS PARTS OF LINCOLN COUNTY. SFC LOW CONTS TO DEEPEN VCNTY NE NYE
COUNTY AND CONVECTIVE CLOUD TOPS COOLING AS UPPER DIFFLUENCE AND
DIVERGENCE HAS INCRD AHEAD OF PAC TROF.  APPEARS UPR CIRCULATION
TAKING SHAPE VCNTY NE CA/NW NV BORDER ATTM.  A DEFINITE BREAK IN THE
WX ACROSS INYO/SAN BERNARDINO COUNTIES AND PCPN DCRG ACROSS SRN CLARK
COUNTY AS WELL.  CONT TO FOLLOW ETA FOR DETAILS AND EXPECT FOCUS OF
HEAVIEST PCPN TO CONT TO SHIFT EWD TDA.  HOWEVER...VERY STEEP LAPSE
RATES AND CONTD QG FORCING LIKELY TO CAUSE CONVECTIVE PCPN TO
REDEVELOP CA/SRN NV THIS AFTERNOON WITH THE POSSIBILITY OF HAIL AND
OR SNOW ON THE DESERT FLOORS.  CONFIDENCE LOW ATTM FOR SNOW ADVISORY
DESERT VALLEY FLOORS (INCLUDING LAS VALLEY) AS ORGANIZED LIFT AND 7H-
2H COUPLING FOCUSES TO THE EAST.  WILL HAVE TO CONT TO MONITOR
REDEVELOPMENT OF CONVECTIVE PCPN FOR CLUES.  LIKELY CONTD UPDATES AS
WX DICTATES. LAS +73.

NEMETH

SRN NV...WINTER STORM WARNING THRU THIS EVE (05Z) ZONES 13/14
      ...WINTER STORM WARNING ABV 4KFT THRU THIS EVE (05Z) ZONES
         15/16/18/19/22
      ...SMALL STREAM-URBAN FLOOD ADVISORY (00Z) ZONE 20.
ERN CA...WINTER STORM WARNING ABV 4KFT THRU THIS EVE (05Z) ZONES
         26-28
NW AZ... WINTER STORM WARNING ABV 4KFT THRU TNGT ZONES 1/3

Nearby

Severe Thunderstorm Warnings in Arizona, 1998Every severe thunderstorm warning in 1998

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.