Alert archive / Arizona / Severe Thunderstorm Warnings in 1987

Severe Thunderstorm Warning 2, NWS Tucson, AZ

August 7, 1987Cochise County, Arizona

NWS Tucson, AZ issued this severe thunderstorm warning at Aug 7, 1987, 10:40 AM MST for Cochise County, Arizona. It was in force for 50 min.

The area

The counties it named.

The facts

Issued
Aug 7, 1987, 10:40 AM MST (17:40 UTC)
Expired
Aug 7, 1987, 11:30 AM MST
In force
50 min
Issued by
NWS Tucson, AZ
Area
Whole counties

County Cochise 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

Tuscon, AZ (KTUS), launched 12:00Z, 5.7 hours before the alert went out and 113 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 1987-08-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1803 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 1987-08-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -28 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
1803 J/kg
Mixed-layer CIN
-42 J/kg
Mixed-layer LCL
1302 m above ground
0-6 km bulk shear
5 kt
0-1 km storm-relative helicity
-28 m²/s²
0-3 km storm-relative helicity
80 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 KTUS 071741
SVRTUS
AZC003-071830-

BULLETIN...EBS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TUCSON AZ
1040 AM MST FRI AUG 7 1987

THE NATIONAL WEATHER SERVICE OFFICE IN TUCSON HAS ISSUED A SEVERE
THUNDERSTORM WARNING UNTIL 1130 AM MST FOR PEOPLE IN THE FOLLOWING
COUNTY OF

SOUTHEAST ARIZONA..COCHISE

AT 1030 AM THE WEATHER STATION AT LIBBY AIRFIELD IN SIERRA VISTA
REPORTED A SEVERE THUNDERSTORM. THEY RECEIVED 3/4 INCH HAIL AND VERY
HEAVY RAINFALL IN A SHORT PERIOD OF TIME REDUCING VISIBLITY TO LESS
THAN 20 FEET. OTHER THUNDERSTORMS ARE DEVELOPING RAPIDLY THROUGHOUT
COCHISE COUNTY.

PERSONS SHOULD BE ALERT TO THESE DANGERS AND TAKE CAUTION ESPECIALLY
WHEN DRIVING OF NEAR LOW LYING AREAS THAT COULD BE FLOODED.

NWS
IMES

Nearby

Severe Thunderstorm Warnings in Arizona, 1987Every severe thunderstorm warning in 1987

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.