Alert archive / Nevada / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 1, NWS Las Vegas, NV

June 9, 1990Clark County, Nye County, Nevada

NWS Las Vegas, NV issued this severe thunderstorm warning at Jun 9, 1990, 6:05 PM PDT for Clark County, Nye County, Nevada. It was in force for 115 min.

The area

The counties it named.

The facts

Issued
Jun 9, 1990, 6:05 PM PDT (01:05 UTC)
Expired
Jun 9, 1990, 8:00 PM PDT
In force
115 min
Issued by
NWS Las Vegas, NV
Area
Whole counties

Counties Clark County, NV, Nye County, NV

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Mercury/Desert R, NV (KDRA), launched 00:00Z, 1.1 hours before the alert went out and 61 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 00:00Z on 1990-06-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 21 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 00:00Z on 1990-06-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 7 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
21 J/kg
Mixed-layer CIN
-55 J/kg
Mixed-layer LCL
2712 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
7 m²/s²
0-3 km storm-relative helicity
-8 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 100107
SVRLAS
NVC003-023-100300-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LAS VEGAS NV
605 PM PDT SAT JUN 9 1990
 
THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  800 PM PDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...S...
 
IN SOUTH NEVADA
 
   ...SOUTHERN CLARK COUNTY
 
IN SOUTH CENTRAL NEVADA
 
   ...SOUTHERN NYE COUNTY
 
WEATHER SPOTTER AT AMARGOSSA VALLEY REPORTS WIND OVER 50 MPH AND
VISIBILITY NEAR ZERO WITH BLOWING SAND AND DUST.
DODD/0106Z
 
 
WHEN THUNDERSTORMS ARE OCCURRING...PEOPLE SHOULD MOVE INSIDE A
STRONG BUILDING.  DO NOT STAND BY WINDOWS.  DON'T USE TELEPHONES
OR ELECTRICAL APPLIANCES UNLESS IN AN EMERGENCY UNTIL THE STORM
HAS PASSED.  MOTORISTS SHOULD NOT DRIVE INTO LOW WATER CROSSINGS.
 
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 9, 2:35 PM PDT, 3 hours 30 minutes before
NVZ008-009-100100-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
235 PM PDT SAT JUN 9 1990

...THUNDERSTORMS OVER EXTREME SOUTHERN NEVADA...

AT 230 PM PDT RADAR AND LIGHTNING DETECTION EQUIPMENT SHOWED THUN-
DERSTORMS OVER EXTREME SOUTHERN NEVADA...NORTHWEST ARIZONA AND THE
EASTERN DESERTS OF CALIFORNIA.  THE THUNDERSTORMS WERE MOVING TO
THE NORTH AT 25 MPH.

THUNDERSTORMS ARE EXPECTED TO CONTINUE OVER SOUTHERN NEVADA THIS
AFTERNOON AND TONIGHT AND SOME OF THEM MAY PRODUCE HEAVY RAIN...
STRONG GUSTY WINDS...DEADLY LIGHTNING AND HAIL.

LOCAL FLOODING OF LOW LYING AREAS AND NORMALLY DRY WASHES IS POSSIBLE.
REMEMBER...NEVER ATTEMPT TO CROSS FLOODED ROADS ON FOOT OR IN YOUR CAR.

GUSTY WINDS ASSOCIATED WITH THUNDERSTORMS WILL CAUSE LOCAL AREAS OF
BLOWING DUST AND SAND WHICH WILL REDUCE VISIBILITIES TO NEAR ZERO AT
TIMES.

IF LIGHTNING IS NEARBY TAKE SHELTER INDOORS OR IN YOUR CAR.  NEVER SEEK
SHELTER FROM LIGHTNING UNDER A TREE.

PERSONS ENGAGED IN OUTDOOR ACTIVITES IN SOUTHERN NEVADA TODAY ARE URGED
TO USE CAUTION AND KEEP AN EYE ON THE SKY.

BOATERS ON LAKE MEAD AND MOHAVE ARE REMINDED THAT A LAKE WIND ADVISORY
HAS BEEN ISSUED FOR THIS AFTERNOON AND TO-NIGHT FOR STRONG GUSTY WINDS
NEAR THUNDERSTORMS.

LISTEN TO COMMERCIAL RADIO...TELEVISION OR NOAA WEATHER RADIO FOR THE
LATEST FORECASTS OR ADDITIONAL STATEMENTS CONCERNING THIS SITUATION.
DJR/2135Z

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 9, 9:12 PM PDTFlash Flood WarningVEFClark3 hr
Jun 10, 1:14 PM PDTFlash Flood WarningVEFClark2 hr
Jun 10, 3:00 PM PDTFlash Flood WarningVEFClark2 hr

Nearby

Severe Thunderstorm Warnings in Nevada, 1990Every severe thunderstorm warning in 1990

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.