Alert archive / Nevada / Flash Flood Warnings in 1989
Flash Flood Warning 9, NWS Las Vegas, NV
NWS Las Vegas, NV issued this flash flood warning at Aug 11, 1989, 6:13 AM PDT for Clark County, Nevada. It was in force for 115 min.
The area
The counties it named.
The facts
- Issued
- Aug 11, 1989, 6:13 AM PDT (13:13 UTC)
- Expired
- Aug 11, 1989, 8:08 AM PDT
- In force
- 115 min
- 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 12:00Z, 1.2 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
- 102 J/kg
- Mixed-layer CIN
- -234 J/kg
- Mixed-layer LCL
- 1355 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- -72 m²/s²
- 0-3 km storm-relative helicity
- 44 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.9
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KLAS 111313
FFWLAS
NVC003-AZC015-111615-
BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LAS VEGAS NV
713 AM MDT FRI AUG 11 1989
THE NATIONAL WEATHER SERVICE HAS ISSUED A FLASH FLOOD WARNING
EFFECTIVE UNTIL 1015 AM MDT FOR PEOPLE IN THE FOLLOWING
COUNTIES
IN THE EXTREME SOUTH PART OF NEVADA
SOUTHERN CLARK...
IN THE NORTHWEST PART OF ARIZONA
EXTREME NORTHWEST MOHAVE...
AT 6 AM HEAVY RAINS HAVE BEEN REPORTED IN THE LAKE MEAD AREA WITH
LOCAL FLOODING AT WILLOW BEACH..CALLVILLE BAY..LAS VEGAS WASH..AND
BOULDER BEACH.
A FLASH FLOOD WARNING MEANS 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 TO HIGHER GROUND.
DO NOT DRIVE YOUR VEHICLE INTO AREAS WFHERE 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 IMMEDIATELY.
MOVE TO HIGHER GROUND.
SMITHWhat 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, Aug 11, 4:19 AM PDT, 1 hour 54 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE LAS VEGAS, NV 418 AM PDT FRI AUG 11 1989 ...THUNDERSTORMS CONTINUE OVER SOUTHERN NEVADA... THUNDERSTORMS CONTINUE OVER THE NORTHERN HALF OF CLARK AND SOUTHERN NYE COUNTIES. THESE THUNDERSTORMS ARE MOVING TO THE SOUTHEAST AROUND 15 MILES AN HOUR. STRONG WINDS WITH POSSIBLE GUST TO 50 MILES AN HOUR CAN BE ASSOCIATED WITH THESE THUNDERSTORMS. PERSONS PLANNING OUTDOOR ACTIVITIES IN SOUTHERN NEVADA TODAY SHOULD USE USE CAUTION AND KEEP AN EYE ON THE SKY. BOATERS ON LAKE MEAD AND LAKE MOHAVE ARE REMINDED THAT A LAKE WIND ADVISORY IS IN EFFECT FOR THE LAKES FOR STRONG WINDS AND ROUGH WATERS SHOULD ANY OF THESE THUNDERSTORMS REACH THE ALES AREA. LISTEN TO COMMERCIAL RADIO...TELEVISION OR NOAA WEATHER RADIO FOR THE LATEST FORECASTS OR ADDITIONAL STATEMENTS. SMITH/1118Z
Special weather statement, Aug 11, 6:02 AM PDT, 11 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE LAS VEGAS, NV 601 AM PDT FRI AUG 11 1989 ...THUNDERSTORMS CONTINUE OVER SOUTHERN NEVADA... LAS VEGAS RADAR AND LIGHTING DETECTION EQUITMENT SHOW THUNDERSTORMS COVERING MUCH OF CLARK COUNTY. THIS ACTIVITY IS MOVING TO THE EAST AND HAS SPREAD INTO NORTHWEST ARIZONA. SOME OF THESE THUNDERSTORMS MAY PRODUCE HEAVY RAIN...WIND GUSTS TO 50 MILES AN HOUR...DEADLY LIGHTING AND SMALL HAIL. PERSONS PLANNING OUTDOOR ACTIVITIES IN SOUTHERN NEVADA TODAY SHOULD USE USE CAUTION AND KEEP AN EYE ON THE SKY. BOATERS ON LAKE MEAD AND LAKE MOHAVE ARE REMINDED THAT A LAKE WIND ADVISORY IS IN EFFECT FOR THE LAKES FOR STRONG WINDS AND ROUGH WATERS SHOULD ANY: OF THESE THUNDERSTORMS REACH THE ALES AREA. LISTEN TO COMMERCIAL RADIO...TELEVISION OR NOAA WEATHER RADIO FOR THE LASTEST FORECASTS OR ADDITIONAL STATEMENTS. SMITH/1301Z
Nearby
Flash Flood Warnings in Nevada, 1989Every flash flood warning in 1989
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.