Alert archive / Nevada / Flash Flood Warnings in 1990
Flash Flood Warning 5, NWS Las Vegas, NV
NWS Las Vegas, NV issued this flash flood warning at Jul 12, 1990, 5:18 PM PDT for Clark County, Nevada. It was in force for 3 hr.
The area
The counties it named.
The facts
- Issued
- Jul 12, 1990, 5:18 PM PDT (00:18 UTC)
- Expired
- Jul 12, 1990, 8:15 PM PDT
- In force
- 3 hr
- Issued by
- NWS Las Vegas, NV
- Area
- Whole counties
County Clark 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, 0.3 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.
- Mixed-layer CAPE
- 66 J/kg
- Mixed-layer CIN
- -20 J/kg
- Mixed-layer LCL
- 3860 m above ground
- 0-6 km bulk shear
- 2 kt
- 0-1 km storm-relative helicity
- 8 m²/s²
- 0-3 km storm-relative helicity
- 13 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KLAS 130019 FFWLAS NVC003-130315- BULLETIN - EBS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE LAS VEGAS NV 518 PM PDT THU JUL 12 1990 THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A FLASH FLOOD WARNING EFFECTIVE UNTIL 815 PM PDT FOR PEOPLE IN THE FOLLOWING LOCATIONS...... IN SOUTH NEVADA ...SOUTHERN CLARK COUNTY A WEATHER SPOTTER AND REMOTE RAIN GUAGES REPORT 1.14 INCHES OF RAIN AT CAL-NEV-ARI IN 20 MINUTES. THIS LOCATION IS ABOUT 10 MILES SOUTH OF SEARCHLIGHT. THIS WARNING COVERS AN AREA FROM SEARTCHLIGHT TO LAUGHLIN NEVADA. LAS VEGAS RADAR SHOWED HEAVY THUNDERSTORMS MOVING SLOWLY ACROSS THE WARNING AREA. SMALL HAIL WAS ALSO REPORTED BY A SPOTTER. DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS SAFELY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY. MOVE TO HIGHER GROUND. A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IS IMMINENT. MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES. DO NOT ATTEMPT TO CROSS BRIDGES...DIPS...OR LOW SPOTS IF WATER COVERS THE ROADWAY. NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL ONE...ON FNOOT. TO ESCAPE RISING WATER MOVE UP TO HIGHER GROUND.
What forecasters said that day
The local office's own words before this flash flood 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, Jul 12, 1:27 PM PDT, 3 hours 51 minutes before
NVZ008-009-122300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE LAS VEGAS NV 125 PM PDT THU JUL 12 1990 ...THUNDERSTORMS AND SHOWERS ARE DEVELOPING OVER SOUTHERN NEVADA... RADAR AND LIGHTNING DETECTION EQUIPMENT SHOWS SHOWERS AND THUNDERSTORMS DEVELOPING OVER SOUTHERN NEVADA. MOST OF THE ACTIVITY WAS OVER SOUTHERN CLARK COUNTY AT THIS TIME. THESE SHOWERS AND THUNDERSTORMS ARE EXPECTED TO CONTINUE INTO THE EVENING HOURS. SOME OF THE HEAVIER THUNDERSTORMS MAY PRODUCE HEAVY RAIN...STRONG GUSTY WINDS TO 40 MILES AN HOUR...DEADLY LIGHTNING AND SMALL 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 REDUCING VISIBILITIES. 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 ARE URGED TO USE CAUTION AND KEEP AN EYE ON THE SKY. LISTEN TO COMMERCIAL RADIO...TELEVISION OR NOAA WEATHER RADIO FOR THE LATEST WEATHER INFORMATION. DODD/2026Z
Special weather statement, Jul 12, 3:46 PM PDT, 1 hour 32 minutes before
NVZ008-009-130500- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE LAS VEGAS NV 340 PM PDT THU JUL 12 1990 ...THUNDERSTORMS AND SHOWERS ARE NEAR THE LAS VEGAS VALLEY... RADAR AND LIGHTNING DETECTION EQUIPMENT SHOWS SHOWERS AND THUNDERSTORMS MOVING CLOSE TO AND SURROUNDING THE LAS VEGAS VALLEY. NO REPORTS OF RAIN IN THE VALLEY AT THIS TIME. THESE SHOWERS AND THUNDERSTORMS ARE EXPECTED TO CONTINUE INTO THE EVENING HOURS. SOME OF THE HEAVIER THUNDERSTORMS MAY PRODUCE HEAVY RAIN...STRONG GUSTY WINDS TO 40 MILES AN HOUR...DEADLY LIGHTNING AND SMALL 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 REDUCING VISIBILITIES. 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 ARE URGED TO USE CAUTION AND KEEP AN EYE ON THE SKY. LISTEN TO COMMERCIAL RADIO...TELEVISION OR NOAA WEATHER RADIO FOR THE LATEST WEATHER INFORMATION. DODD/2244Z
Nearby
Flash Flood Warnings in Nevada, 1990Every flash flood 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.