Alert archive / Arizona / Severe Thunderstorm Warnings in 1996

Severe Thunderstorm Warning 129, NWS Tucson, AZ

September 13, 1996Pinal County, Arizona

NWS Tucson, AZ issued this severe thunderstorm warning at Sep 13, 1996, 3:46 PM MST for Pinal County, Arizona. It was in force for 59 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: Sep 13, 1996, 3:46 PM MST (22:46 UTC)
Expired: Sep 13, 1996, 4:45 PM MST
In force: 59 min
Issued by: NWS Tucson, AZ
Area: Whole counties

County Pinal County, AZ

The radar

The Phoenix radar (KIWA), 52 km from the middle of the area, began a volume at 22:48 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, 10.8 hours before the alert went out and 92 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 2710 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 23 m²/s²
0-3 km storm-relative helicity: 67 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 132246
SVRTUS
AZC021-132345-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TUCSON ARIZONA
346 PM MST FRI SEP 13 1996
 
THE NATIONAL WEATHER SERVICE IN TUCSON ARIZONA HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  445 PM MST
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTH CENTRAL ARIZONA
 
   ...SOUTHEAST PINAL COUNTY...
 
AT 345 PM MST TUCSON DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
ABOUT 3 MILES TO THE NORTHEAST OF RED ROCK. THIS STORM WAS MOVING
TO THE NORTHEAST ABOUT 30 MPH AND WILL PASS OVER HIGHWAY 79 WITHIN
THE NEXT 15 MINUTES. A SECOND SEVERE THUNDERSTORM WAS LOCATED
ABOUT 8 MILES SOUTHWEST OF FRIENDLY CORNERS AND WILL BE MOVING
INTO FRIENDLY CORNERS AND PICACHO WITHIN THE NEXT HALF HOUR.
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 57
MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR
OF YOUR HOME OR BUSINESS.  HEAVY RAINS FLOOD ROADS QUICKLY SO
DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Tucson, AZ wrote its last area forecast discussion before this severe thunderstorm warning went out at Sep 13, 2:44 PM MST, 1 hour 2 minutes earlier.

Area forecast discussion, Sep 13, 2:44 PM MST, 1 hour 2 minutes before

SOUTHEAST ARIZONA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TUCSON AZ
240 PM MST FRI SEP 13 1996

SVR WX EVENT SHAPING UP FOR SE AZ TNT AS STG UPR TROF MOVG INTO
AREA ACTING UPON MSTR FROM FAUSTO. GOOD VERTICAL SHEAR PROFILE IN
PLACE SO WDSPRD SVR STORMS EXPECTED. SATELLITE PICTURES SHOW UPR
TROF MOVG RAPIDLY EWD WITH LEADING EDGE OF DRIER AIR ALREADY
PUSHING INTO WRN AZ PER YUM DEW POINTS IN THE MID 40S. SO MOST WX
COULD BE OUT OF AREA LATER TONIGHT. HOWEVER UPR TROF COULD SLOW
DOWN AS SATELLITE PICTURES SHOW SOME INDICATION OF JET MAX ON THE
SWRN SIDE OF TROF DIGGING SWD. ALSO WITH MODELS HANGING ONTO MSTR
THROUGH SAT...DECREASING FROM WEST TO EAST...WILL HOLD ONTO SHWRS
AND TSTMS THRU SAT...ONLY MRNG HOURS WRN ZONES. SUBSIDENCE AND
DRIER AIR BEHIND TROF SAT NIGHT AND SUN WILL PUT AN END TO SHWR
ACTIVITY. EXTENDED LOOKS DRY AS ANOTHER UPR TROF DROPS INTO GREAT
BASIN PUTTING DRY WLY FLOW ACRS AZ. TUS 5300. COLLINS

.TUS...SVR TSTM WATCH PIMA...PINAL...AND SANTA CRUZ COUNTIES
...ZONES 21>23...UNTIL 8PM TONIGHT.

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.