Alert archive / Arizona / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 2, NWS Tucson, AZ

March 31, 1997Cochise County, Arizona

NWS Tucson, AZ issued this severe thunderstorm warning at Mar 31, 1997, 6:00 PM MST for Cochise County, Arizona. It was in force for 45 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Mar 31, 1997, 6:00 PM MST (01:00 UTC)
Expired: Mar 31, 1997, 6:45 PM MST
In force: 45 min
Issued by: NWS Tucson, AZ
Area: Whole counties

County Cochise County, AZ

The nearest sounding before it

Tuscon, AZ (KTUS), launched 00:00Z, 1.0 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 358 J/kg
Mixed-layer CIN: -23 J/kg
Mixed-layer LCL: 1995 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: -11 m²/s²
0-3 km storm-relative helicity: 43 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 010101 RRA
SVRTUS
AZC003-010145-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TUCSON ARIZONA
600 PM MST MON MAR 31 1997
 
THE NATIONAL WEATHER SERVICE IN TUCSON ARIZONA HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  645 PM MST
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTHEAST ARIZONA
 
   ...SOUTHWESTERN COCHISE COUNTY
 
AT 555 PM MST TUCSON DOPPLER RADAR CONTINUED TO DETECT A SEVERE
THUNDERSTORM TWO MILES NORTHWEST OF SIERRA VISTA ALONG STATE HIGHWAY 90.
THIS STORM CONTINUES TO MOVE TO THE SOUTHEAST AT 10 TO 15 MPH AND WILL
MOVE JUST NORTH OF SIERRA VISTA BETWEEN 6 AND 630 PM MST. THIS STORM IS
CAPABLE OF PRODUCING ONE INCH HAIL...LOCALLY HEAVY RAIN...AND WIND GUSTS
IN EXCESS OF 57 MPH. RESIDENTS OF SIERRA VISTA AND MOTORISTS TRAVELLING
ALONG STATE HIGHWAY 90 ARE URGED TO USE CAUTION DUE TO THE MOVEMENT OF
THIS SEVERE THUNDERSTORM.
 
 
OKULSKI

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 31, 5:09 PM MST	Severe Thunderstorm Warning	TWC	Cochise, Santa Cruz	51 min

Nearby

Severe Thunderstorm Warnings in Arizona, 1997 Every severe thunderstorm warning in 1997

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.