Alert archive / Arizona / Flash Flood Warnings in 1990

Flash Flood Warning 14, NWS Phoenix, AZ

July 13, 1990Mohave County, Arizona

NWS Phoenix, AZ issued this flash flood warning at Jul 13, 1990, 8:44 PM MST for Mohave County, Arizona. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued
Jul 13, 1990, 8:44 PM MST (03:44 UTC)
Expired
Jul 13, 1990, 11:45 PM MST
In force
3 hr
Issued by
NWS Phoenix, AZ
Area
Whole counties

County Mohave County, AZ

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, 3.7 hours before the alert went out and 226 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 1990-07-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 1990-07-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -18 square meters per square second.1939Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
3451 m above ground
0-6 km bulk shear
12 kt
0-1 km storm-relative helicity
-18 m²/s²
0-3 km storm-relative helicity
23 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 140347
FFWLAS
AZC015-NVC003-140645-
 
BULLETIN - EBS ACTIVATION REQUESTED
SEVERE THUNDERSTORM AND FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LAS VEGAS NV
844 PM PDT FRI JUL 13 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...S...
 
IN NORTHWEST ARIZONA
 
   ...NORTHWESTERN MOHAVE COUNTY
 
 
IN SOUTH NEVADA
 
   ...EASTERN CLARK COUNTY
 
THUNDERSTORMS ARE OCCURRING IN EASTERN CLARK COUNTY. STEADY WINDS OF
50 MPH HAVE BEEN REPORTED AT ECHO BAY AND TEMPLE BAR IN THE NORTHERN
PARTS OF THE LAKE MEAD RECREATIONAL AREA. ALSO THE VALLEY OF FIRE HAS
REPORTED 2 TO 3 FEET OF WATER ON THE ROADWAYS ALONG WITH GALE FORCE
WINDS. THE STORMS  ARE EXPECTED TO REMAIN ACTIVE IN EASTERN CLARK
COUNTY FOR THE NEXT TWO HOURS.
 
 
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.
 
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 BUSINESS.  HEAVY RAINS FLOOD ROADS QUICKLY SO
DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.
 
STAYED TUNED TO NOAA WEATHER RADIO...TELEVISION OR LOCAL RADIO
FOR UDATES ON THIS WEATHER SITURATION.
 
EHB/0346Z

The office that day

Everything else NWS Phoenix, AZ issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 13, 6:40 PM MSTFlash Flood WarningPSRYavapai2 hr
Jul 13, 6:40 PM MSTFlash Flood WarningPSRLa Paz, Mohave2 hr
Jul 13, 8:03 PM MSTFlash Flood WarningPSRLa Paz, Yavapai117 min
Jul 13, 8:03 PM MSTFlash Flood WarningPSRMohave117 min
Jul 13, 8:03 PM MSTFlash Flood WarningPSRMaricopa117 min
Jul 13, 8:03 PM MSTSevere Thunderstorm WarningPSRLa Paz, Mohave117 min
Jul 13, 8:03 PM MSTSevere Thunderstorm WarningPSRMaricopa117 min
Jul 13, 8:44 PM MSTSevere Thunderstorm WarningPSRMohave3 hr
Jul 13, 10:42 PM MSTFlash Flood WarningPSRMohave48 min
Jul 13, 10:42 PM MSTSevere Thunderstorm WarningPSRMohave48 min
Jul 13, 11:34 PM MSTFlash Flood WarningPSRMohave116 min
Jul 14, 1:41 AM MSTFlash Flood WarningPSRLa Paz, Mohave3 hr

Nearby

Flash Flood Warnings in Arizona, 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.