Alert archive / Arizona / Severe Thunderstorm Warnings in 1992

Severe Thunderstorm Warning 39, NWS Phoenix, AZ

August 17, 1992Maricopa County, Arizona

NWS Phoenix, AZ issued this severe thunderstorm warning at Aug 17, 1992, 3:58 PM MST for Maricopa County, Arizona. It was in force for 2 hr. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Aug 17, 1992, 3:58 PM MST (22:58 UTC)
Expired
Aug 17, 1992, 6:00 PM MST
In force
2 hr
Issued by
NWS Phoenix, AZ
Area
Whole counties

County Maricopa County, AZ

What was reported inside it

TimeReportWhereRemark
Aug 17, 5:50 PM MSTThunderstorm Wind 52Maricopa, AZ

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Tuscon, AZ (KTUS), launched 12:00Z, 11.0 hours before the alert went out and 198 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, Tuscon, AZ at 12:00Z on 1992-08-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 283 joules per kilogram.LCLLFCEL10008507005003002001001 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, Tuscon, AZ at 12:00Z on 1992-08-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 53 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
283 J/kg
Mixed-layer CIN
-225 J/kg
Mixed-layer LCL
2614 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
53 m²/s²
0-3 km storm-relative helicity
59 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 KPHX 172308
SVRPHX
AZC013-180100-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PHOENIX ARIZONA
358 PM MST MON AUG 17 1992
 
THE NATIONAL WEATHER SERVICE IN PHOENIX ARIZONA HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  600 PM MST
FOR THE FOLLOWING LOCATIONS......
 
IN SOUTH CENTRAL ARIZONA
 
   ...EASTERN HALF OF MARICOPA COUNTY...INCLUDED THE GREATER PHOENIX
AREAS...ESPECIALLY CAREFREE...CAVE CREEK...SCOTTSDALE...FOUNTAIN
HILLS...MESA...TEMPE...CHANDLER AND OTHER PHOENIX EAST VALLEY
AREAS UNTIL 6 PM.
 
INTENSE THUNDERSTORMS HAVE BUILT OVER THE MOUNTAINS NORTH THROUGH
NORTHEAST OF PHOENIX THE PAST SEVERAL HOURS.  AT 350 PM THESE
THUNDERSTORMS WERE BEGINNING TO DESCEND INTO THE FAR NORTHEAST
VALLEY OF GREATER PHOENIX...AROUND CAVECREEK AND CAREFREE.
 
A WEATHER SPOTTER AT THE CAREFREE SKY RANCH AIRPORT REPORTED
THUNDERSTORM WINDS AS HIGH AS 60 MPH.  THUNDERSTORMS MOVING INTO
THE GREATER PHOENIX AREA WILL LIKELY FEED OFF THE CITY HEAT AND
HUMIDITY AND BUILD INTO SEVERE THUNDERSTORMS PRODUCING DAMAGING
WINDS IN EXCESS OF 57 MPH...ALONG WITH VERY HEAVY RAIN.
 
TAKE SHELTER IMMEDIATELY IF THREATENING WEATHER DEVELOPS. THESE
COULD BE DANGEROUS STORMS.
 
 
SEVERE THUNDERSTORMS CAUSE DAMAGING WINDS...LARGE HAIL AND DEADLY
LIGHTNING. MOVE INSIDE A REINFORCED BUILDING OR STORM SHELTER. GO TO
AN INTERIOR ROOM OR HALLWAY ON THE LOWEST FLOOR. STAY AWAY FROM
WINDOWS.
 
MOBILE HOMESv ARE IN DANGER FROM SEVERE THUNDERSTORM WINDS...
ESPECIALLY IF THEY HAVE NOT BEEN TIED DOWN. FOR YOUR SAFETY...TAKE
SHELTER IN A STRONG BUILDING. IF YOUR TRAILER PARK HAS A STORM
SHELTER...USE IT.
 
 
VASQUEZ

Nearby

Severe Thunderstorm Warnings in Arizona, 1992Every severe thunderstorm warning in 1992

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.