Alert archive / Arizona / Severe Thunderstorm Warnings in 1989

Severe Thunderstorm Warning 2, NWS Tucson, AZ

August 5, 1989Cochise County, Arizona

NWS Tucson, AZ issued this severe thunderstorm warning at Aug 5, 1989, 6:30 PM MST for Cochise County, Arizona. It was in force for 70 min.

The area

The counties it named.

The facts

Issued
Aug 5, 1989, 6:30 PM MST (01:30 UTC)
Expired
Aug 5, 1989, 7:40 PM MST
In force
70 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 00:00Z, 1.5 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 00:00Z on 1989-08-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 761 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 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 00:00Z on 1989-08-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 2 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
761 J/kg
Mixed-layer CIN
-25 J/kg
Mixed-layer LCL
2205 m above ground
0-6 km bulk shear
12 kt
0-1 km storm-relative helicity
2 m²/s²
0-3 km storm-relative helicity
50 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 060128
SVRTUS
AZC003-060330-

BULLETIN...EBS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TUCSON AZ
630 PM MST SAT AUG 5 1989

THE NATIONAL WEATHER SERVICE OFFICE IN TUCSON HAS ISSEUED A SEVERE
THUNDERSTORM WARNING UNTIL 830 PM MST FOR PEOPLE IN THE FOLLOWING
COUNTIES OF

SOUTHEAST ARIZONA...COCHISE

AT 625 PM THE TUCSON WEATHER RADAR INDICATED A SEVERE THUNDERSTORM
IN NORTHWEST COCHISE COUNTY. THIS THUNDERSTORM IS SPREADING TO THOE
SOUTHWEST AND WILL LIKELY AFFECT THE COMMUNTIES OF WILCOX...COCHISE
DRAGON...BENSON AND ST. DAVID.

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS IN EXCESS OF 55 MPH...
DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
NORDQUIST

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 5, 6:35 PM MSTSevere Thunderstorm WarningTWCPima115 min

Nearby

Severe Thunderstorm Warnings in Arizona, 1989Every severe thunderstorm 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.