Alert archive / Nevada / Flash Flood Warnings in 1990
Flash Flood Warning 1, NWS Las Vegas, NV
NWS Las Vegas, NV issued this flash flood warning at Jun 9, 1990, 9:12 PM PDT for Clark County, Nevada. It was in force for 3 hr.
The area
The counties it named.
The facts
- Issued
- Jun 9, 1990, 9:12 PM PDT (04:12 UTC)
- Expired
- Jun 10, 1990, 12:15 AM 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, 4.2 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
- 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
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KLAS 100413 FFWLAS AZC015-NVC003-100715- BULLETIN - EBS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE LAS VEGAS NV 912 PM PDT SAT JUN 9 1990 THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A FLASH FLOOD WARNING EFFECTIVE UNTIL 1215 AM PDT FOR PEOPLE IN THE FOLLOWING LOCATIONS...S... IN NORTHWEST ARIZONA ...NORTHWEST MOHAVE COUNTY IN SOUTH NEVADA ...CLARK COUNTY HEAVY RAIN IS FALLING IN BOULDER CITY..PARTS OP THE LAKE MEAD RECREATION AREA AND HAS STARTED IN LAS VEGAS. NATIONAL PARK SERVICE DISPATCHER REPORTS SOME ACCES ROADS HAS WATER RUNNING ACROSS THEM. DODD/0312Z BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE DANGERS OF FLOODS AND FLASH FLOODS. IF FLASH FLOODING IS OBSERVED...ACT QUICKLY. MOVE UP TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING. 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 FOOT. TO ESCAPE RISING WATER MOVE UP TO HIGHER GROUND. DODD/0313Z
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
Local storm report, Jun 9, 7:33 PM PDT, 1 hour 39 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE LAS VEGAS, NV
730 PM PDT SAT JUN 09 1990
TIME PDT EVENT
552 PM PEAK WIND AT MCCARRAN INTERNATONAL AIRPORT REACHED
52 MILES AN HOUR.
600 PM WEATHER SPOTTER AT AMARGOSSA VALLEY IN SOUTHERN NYE
COUNTY REPORTED A SEVERE THUNDERSTORM WITH WINDS OVER
50 MILES AN HOUR AND VISIBILITY NEAR ZERO IN BLOWING
DUST AND SAND.
610 PM RETIRED NWS OBSERVER REPORTED VISIBILITY AT SAHARA AND
BOULDER HIGHWAY( IN LAS VEGAS ) NEAR ZERO FROM BLOWING
DUST AND SAND.
DODD/0231ZThe office that day
Everything else NWS Las Vegas, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 9, 6:05 PM PDT | Severe Thunderstorm Warning | VEF | Clark, Nye | 115 min |
| Jun 10, 1:14 PM PDT | Flash Flood Warning | VEF | Clark | 2 hr |
| Jun 10, 3:00 PM PDT | Flash Flood Warning | VEF | Clark | 2 hr |
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.