Alert archive / Arizona / Severe Thunderstorm Warnings in 1996

Severe Thunderstorm Warning 21, NWS Tucson, AZ

July 6, 1996Graham County, Arizona

NWS Tucson, AZ issued this severe thunderstorm warning at Jul 6, 1996, 3:20 PM MST for Graham County, Arizona. It was in force for 40 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: Jul 6, 1996, 3:20 PM MST (22:20 UTC)
Expired: Jul 6, 1996, 4:00 PM MST
In force: 40 min
Issued by: NWS Tucson, AZ
Area: Whole counties

County Graham County, AZ

The radar

The Tucson radar (KEMX), 135 km from the middle of the area, began a volume at 22:19 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Tuscon, AZ (KTUS), launched 12:00Z, 10.3 hours before the alert went out and 127 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: 1228 J/kg
Mixed-layer CIN: -142 J/kg
Mixed-layer LCL: 2115 m above ground
0-6 km bulk shear: 8 kt
0-1 km storm-relative helicity: 62 m²/s²
0-3 km storm-relative helicity: 149 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 062219
SVRTUS
AZC009-062300-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TUCSON ARIZONA
320 PM MST SAT JUL 6 1996
 
THE NATIONAL WEATHER SERVICE IN TUCSON ARIZONA HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  400 PM MST
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN EAST ARIZONA
 
   ...SOUTH CENTRAL GRAHAM COUNTY
 
AT 318 PM MST...TUCSON DOPPLER RADAR SHOWED A SEVERE THUNDERSTORM
OVER SOUTH CENTRAL GRAHAM COUNTY. THE STORM WAS LOCATED 10 MILES
EAST OF BONITA AND JUST NORTH OF HIGHWAY 266.  MOVEMENT IS THE
SOUTHWEST AT 15 MPH TOWARD FORT GRANT AND BONITA.
 
THIS IS A DANGEROUS STORM.  IF YOU ARE IN ITS PATH YOU SHOULD
PREPARE FOR DAMAGING WIND IN EXCESS OF 57 MPH...LARGE HAIL...AND
DEADLY LIGHTNING.  PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT STAY AWAY FROM WINDOWS.
 
DRB

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 5, 5:02 PM MST	Severe Thunderstorm Warning	TWC	Pima	58 min
Jul 5, 7:50 PM MST	Severe Thunderstorm Warning	TWC	Cochise, Greenlee	40 min
Jul 5, 8:34 PM MST	Severe Thunderstorm Warning	TWC	Cochise, Graham	41 min
Jul 5, 9:15 PM MST	Severe Thunderstorm Warning	TWC	Cochise	45 min
Jul 6, 2:13 PM MST	Severe Thunderstorm Warning	TWC	Graham	47 min
Jul 6, 2:35 PM MST	Flash Flood Warning	TWC	Greenlee	70 min
Jul 6, 2:35 PM MST	Severe Thunderstorm Warning	TWC	Greenlee	70 min
Jul 6, 3:49 PM MST	Severe Thunderstorm Warning	TWC	Santa Cruz	41 min
Jul 6, 4:07 PM MST	Severe Thunderstorm Warning	TWC	Cochise	53 min

Nearby

Severe Thunderstorm Warnings in Arizona, 1996 Every severe thunderstorm warning in 1996

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; radar from the NEXRAD Level II archive.