Alert archive / Arizona / Severe Thunderstorm Warnings in 1996
Severe Thunderstorm Warning 3, NWS Tucson, AZ
NWS Tucson, AZ issued this severe thunderstorm warning at Jun 21, 1996, 1:50 PM MST for Graham County, Arizona. It was in force for 60 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
- Jun 21, 1996, 1:50 PM MST (20:50 UTC)
- Expired
- Jun 21, 1996, 2:50 PM MST
- In force
- 60 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 20:50 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, 8.8 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.
- Mixed-layer CAPE
- 187 J/kg
- Mixed-layer CIN
- -374 J/kg
- Mixed-layer LCL
- 2910 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 16 m²/s²
- 0-3 km storm-relative helicity
- 85 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KTUS 212055 SVRTUS AZC009-212150- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TUCSON ARIZONA 150 PM MST FRI JUN 21 1996 THE NATIONAL WEATHER SERVICE IN TUCSON ARIZONA HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 250 PM MST FOR PEOPLE IN THE FOLLOWING LOCATION... IN EAST ARIZONA ...WESTERN AND CENTRAL GRAHAM COUNTY AT 148 PM MST TUCSON DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM IN FAR WEST CENTRAL GRAHAM COUNTY 20 MILES SOUTHWEST OF BYLAS. MOVEMENT IS TO THE NORTHEAST AT 25 MPH AND IS EXPECTED TO MOVE THROUGH BYLAS NEAR HWY 70 BY 2:35 PM AND MAY ALSO AFFECT CALVA NORTHWEST OF BYLAS NEAR THE SAME TIME. 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 AREA2S WHERE WATER COVERS THE ROAD. MEYER
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 Jun 21, 9:26 AM MST, 4 hours 24 minutes earlier.
Area forecast discussion, Jun 21, 9:26 AM MST, 4 hours 24 minutes before
SOUTHEAST ARIZONA FORECAST DISCUSSION NATIONAL WEATHER SERVICE TUCSON AZ 915 AM MST FRI JUN 21 1996 LAN PROBLEMS THIS MORNING WITH NO GRIDDED DATA AVAILABLE LOCALLY. MAIN AREA OF MSTR SHIFTING EWD AS HIGH CONTS TO SHIFT EWD. 12Z TUS SOUNDING LESS STABLE THEN YDA WITH CAP AT H5 ERODED...PW JUST UNDER 1 INCH. 3 WRN ZNS (21>23) STARTING TO GET ALOT MORE SUN...WITH ERN ZNS STILL WITH CONSIDERABLE CLDS. CHC OF WDLY SCT RW-/TRW- SHUD COVER THINGS NICELY TDA...THIS AFTN FOR 1ST 3 ZNS. INCRG COVERAGE TNGT ERN PTNS STILL LOOKS OKAY...BUT WILL BE EVALUATED CAREFULLY FOR AFTN PACKAGE. MSTR CONTG TO STREAM UP WITH FETCH DISTANT S. SLOW MOVG ALMA NO IMMEDIATE IMPACT...BUT SOMETHING TO WATCH. BREEZY TDA AhND BREEZY TO LCLY WNDY WITH STGR GRAD TMW SHUD SUFFICE FOR DOWN HERE...WNDS MORE OF A FACTOR NRN PTNS. DRYER SWLY FLOW AS HIGH / MSTR SHIFTS EWD AND TROF MOVES INTO BASIN FOR THE WEEKEND. NO BIG CHGS. TUS 232. MEYER
The office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 21, 12:45 PM MST | Severe Thunderstorm Warning | TWC | Pima | 45 min |
Nearby
Severe Thunderstorm Warnings in Arizona, 1996Every 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.