Alert archive / Nevada / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 2, NWS Las Vegas, NV

June 28, 1994Clark County, Nevada

NWS Las Vegas, NV issued this severe thunderstorm warning at Jun 28, 1994, 2:20 PM PDT for Clark County, Nevada. It was in force for 55 min.

The area

The counties it named.

The facts

Issued
Jun 28, 1994, 2:20 PM PDT (21:20 UTC)
Expired
Jun 28, 1994, 3:15 PM PDT
In force
55 min
Issued by
NWS Las Vegas, NV
Area
Whole counties

County Clark County, NV

The nearest sounding before it

Mercury/Desert R, NV (KDRA), launched 12:00Z, 9.3 hours before the alert went out and 99 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 1994-06-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 108 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 12:00Z on 1994-06-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 64 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
108 J/kg
Mixed-layer CIN
-209 J/kg
Mixed-layer LCL
3564 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
64 m²/s²
0-3 km storm-relative helicity
89 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 282122
SVRLAS
NVC003-282215-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LAS VEGAS NV
220 PM PDT TUE JUN 28 1994
 
THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  315 PM PDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS......
 
IN SOUTH NEVADA
 
   ...SOUTHERN CLARK COUNTY
 
NATIONAL PARK SERVICE IN BOULDER CITY NEVADA REPORTED HEAVY WINDS AND
GOLFBALL SIZE HAIL ALONG HIGHWAY 95 SOUTH OF BOULDER CITY. THESE
STORMS WILL LAST FOR ANOTHER HOUR..
 
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55
MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR
OF YOUR HOME OR BUSINESS.  HEAVY RAINS FLOOD ROADS QUICKLY SO
DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.

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.

In the hours before

Special weather statement, Jun 28, 1:16 PM PDT, 1 hour 4 minutes before
NVZ009-290100-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NEVADA
130 PM PDT TUE JUN 28 1994

...THUNDERSTORMS IN SOUTHERN NEVADA...

AT 115 PM PDT...WEATHER RADAR, VISUAL OBSERVATIONS AND LIGHTNING
DETECTORS INDICATED THUNDERSTORMS BUILDING IN SOUTHERN NEVADA.
MOST OF THE THUNDERSTORMS SO FAR HAVE BEEN DEVELOPING IN SOUTHERN
CLARK COUNTY...WITH THE STRONGEST CELL APPROXIMATELY 30 MILES SOUTH OF
LAS VEGAS.  APPARENT MOVEMENT OF THE STORMS WAS VERY SLOW...PERHAPS
5 MPH...TO THE NORTH.

THE REMAINDER OF THE AFTERNOON SHOULD BRING FURTHER DEVELOPMENT OF
THUNDERSTORMS SCATTERED THROUGHOUT SOUTHERN NEVADA.  IF YOU ARE IN
OR AROUND ANY STORMS THIS AFTERNOON...BE PREPARED FOR STRONG GUSTY
WINDS...POSSIBLE SMALL HAIL...AND DANGEROUS CLOUD TO GROUND LIGHTNING.
SINCE WE HAVE BEEN IN OUR NORMAL COMPLACENT DRY SEASON...EXTRA CARE
SHOULD BE EXERCISED BY GETTING BACK INTO THE HABIT OF REMAINING AWARE
OF THE SUDDENLY CHANGING WEATHER CONDITIONS THAT CAN CHARACTERIZE
THIS TIME OF YEAR.  STAY TUNED TO YOUR NOAA WEATHER RADIO OR FAVORITE
LOCAL TV OR RADIO STATION FOR ANY UPDATES.
CORDERO

Nearby

Severe Thunderstorm Warnings in Nevada, 1994Every severe thunderstorm warning in 1994

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.