Alert archive / Nevada / Flash Flood Warnings in 1990
Flash Flood Warning 7, NWS Las Vegas, NV
NWS Las Vegas, NV issued this flash flood warning at Jul 14, 1990, 9:42 PM PDT for Clark County, Nye County, Nevada. It was in force for 2 hr.
The area
The counties it named.
The facts
- Issued
- Jul 14, 1990, 9:42 PM PDT (04:42 UTC)
- Expired
- Jul 14, 1990, 11:45 PM PDT
- In force
- 2 hr
- 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, 4.7 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.
- Mixed-layer CAPE
- 20 J/kg
- Mixed-layer CIN
- -368 J/kg
- Mixed-layer LCL
- 2607 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 5 m²/s²
- 0-3 km storm-relative helicity
- 69 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 150442 FFWLAS NVC003-023-150645- BULLETIN - EBS ACTIVATION REQUESTED SEVERE THUNDERSTORM AND FLASH FLOOD WARNING NATIONAL WEATHER SERVICE LAS VEGAS NV 942 PM PDT SAT JUL 14 1990 THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A SEVERE THUNDERSTORM AND FLASH FLOOD WARNING EFFECTIVE UNTIL 1145 PM PDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN SOUTH NEVADA ...CENTRAL CLARK COUNTY IN SOUTH CENTRAL NEVADA ...SOUTHEASTERN NYE COUNTY LAS VEGAS RADAR AND SPOTTER REPORTS INDICATE STRONG WINDS AND HEAVY RAINS IN SOUTHEASTERN NYE COUNTY AND CENTRAL CLARK COUNTY. SPOTTER IN SANDY VALLEY HAS WINDS GUSTING IN EXCESS OF 50 MPH WITH HEAVY RAIN. SPOTTER AT THE 18 MILE MARKER ON THE KYLE CANYON ROAD HAS HEAVY RAIN. IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER FROM THE WEATHER IN A STRONG BUILDING. DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN... AND DEADLY LIGHTNING ARE ALL POSSIBLE IN SEVERE THUNDERSTORMS. STAY INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED. 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 BUS$INESS. 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 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 14, 4:34 PM PDT, 5 hours 8 minutes before
NVZ008-009-150300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE LAS VEGAS NV 430 PM PDT SAT JUL 14 1990 ...THUNDERSTORMS AND SHOWERS CONTINUE OVER MOST AREAS IN SOUTHERN NEVADA... RADAR AND LIGHTNING DETECTION EQUIPMENT SHOWED SHOWERS AND THUNDER- STORMS OVER MOST OF SOUTHERN NEVADA WITH THE MOST ACTIVE THUNDERSTORMS IN SOUTHWESTERN LINCOLN COUNTY. THESE THUNDERSTORMS ARE EXPECTED TO CONTINUE INTO TONIGHT. THE AIRMASS IS VERY MOIST. SOME OF THE THUNDERSTORMS MAY PRODUCE HEAVY RAIN..STRONG GUSTY WINDS TO 40 MILES AN HOUR..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 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 NEVyADA ARE URRGED TO USE CAUTION AND KEEP AN EYE ON THE SKY. LISTEN TO COMMERCIAL RADIO...TELEVISION OR NOAA WEATHER RADIO FOR THE LATEST WEATHER INFORMATION. HCB/2333Z
Special weather statement, Jul 14, 4:38 PM PDT, 5 hours 4 minutes before
NVZ008-009-150300- SPECIAL WEATHER STATEMENT...CORRECTION... NATIONAL WEATHER SERVICE LAS VEGAS NV 430 PM PDT SAT JUL 14 1990 ...THUNDERSTORMS AND SHOWERS CONTINUE OVER MOST AREAS IN SOUTHERN NEVADA... RADAR AND LIGHTNING DETECTION EQUIPMENT SHOWED SHOWERS AND THUNDER- STORMS OVER MOST OF SOUTHERN NEVADA WITH THE MOST ACTIVE THUNDERSTORMS IN SOUTHWESTERN LINCOLN COUNTY. THESE THUNDERSTORMS ARE EXPECTED TO CONTINUE INTO TONIGHT. THE AIRMASS IS VERY MOIST. SOME OF THE THUNDERSTORMS MAY PRODUCE HEAVY RAIN..STRONG GUSTY WINDS TO 40 MILES AN HOUR..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 SAND AND DUST 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 URRGED TO USE CAUTION AND KEEP AN EYE ON THE SKY. LISTEN TO COMMERCIAL RADIO...TELEVISION OR NOAA WEATHER RADIO FOR THE LATEST WEATHER INFORMATION. HCB/2333Z
Local storm report, Jul 14, 7:40 PM PDT, 2 hours 2 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE LAS VEGAS, NV
734 PM PDT SAT JUL 14 1990
TIME PDT PLACE EVENT
725 PM BEATTY (SPOTTER) RAIN BEGAN AROUND 630 PM AND 1.47
INCHES OF RAIN RECORDED IN 1 HOUR.
RUNNING WATER ACROSS HER PROPERTY
HAS STOPPED. WINDS ARE CALM.
END
HCB/0240ZThe office that day
Everything else NWS Las Vegas, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 14, 9:42 PM PDT | Severe Thunderstorm Warning | VEF | Clark, Nye | 2 hr |
| Jul 14, 11:07 PM PDT | Flash Flood Warning | VEF | Clark | 3 hr |
| Jul 14, 11:07 PM PDT | Severe Thunderstorm Warning | VEF | Clark | 3 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.