Alert archive / Arizona / Severe Thunderstorm Warnings in 1996
Severe Thunderstorm Warning 52, NWS Tucson, AZ
NWS Tucson, AZ issued this severe thunderstorm warning at Jul 25, 1996, 3:52 PM MST for Pima County, Arizona. It was in force for 68 min. 2 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Jul 25, 1996, 3:52 PM MST (22:52 UTC)
- Expired
- Jul 25, 1996, 5:00 PM MST
- In force
- 68 min
- Issued by
- NWS Tucson, AZ
- Area
- Whole counties
County Pima County, AZ
The radar
The Tucson radar (KEMX), 112 km from the middle of the area, began a volume at 22:52 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 25, 4:00 PM MST | Hail 1.75 | Tucson, AZ | |
| Jul 25, 4:05 PM MST | Hail 0.75 | Tucson, AZ |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.
The nearest sounding before it
Tuscon, AZ (KTUS), launched 12:00Z, 10.9 hours before the alert went out and 84 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
- 678 J/kg
- Mixed-layer CIN
- -189 J/kg
- Mixed-layer LCL
- 2322 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- -24 m²/s²
- 0-3 km storm-relative helicity
- 28 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KTUS 252250 SVRTUS AZC019-260000- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TUCSON ARIZONA 352 PM MST THU JUL 25 1996 THE NATIONAL WEATHER SERVICE IN TUCSON ARIZONA HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 500 PM MST FOR PEOPLE IN THE FOLLOWING LOCATION... IN SOUTH CENTRAL ARIZONA ...EASTERN PIMA COUNTY ...INCLUDES THE FAR SOUTHWEST PART OF THE TUCSON METRO... AT 350 PM MST...TUCSON DOPPLER RADAR SHOWS A SEVERE THUNDERSTORM HAS DEVELOPED OVER RYAN FIELD NORTHWARD TO OLD TUCSON. THE STORM WAS BUILDING NORTHWARD TOWARD THE TUCSON MOUNTAINS...SAGUARO NATIONAL PARK...THE DESERT MUSEUM...AND HIGHWAY 86. WHEN THUNDERSTORMS ARE OCCURRING...PEOPLE SHOULD MOVE INSIDE A STRONG BUILDING. DO NOT STAND BY WINDOWS. DON'T USE TELEPHONES OR ELECTRICAL APPLIANCES UNLESS IN AN EMERGENCY UNTIL THE STORM HAS PASSED. MOTORISTS SHOULD NOT DRIVE INTO LOW WATER CROSSINGS. DRB l
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 Jul 25, 2:22 PM MST, 1 hour 30 minutes earlier.
Area forecast discussion, Jul 25, 2:22 PM MST, 1 hour 30 minutes before
SOUTHEAST ARIZONA FORECAST DISCUSSION NATIONAL WEATHER SERVICE TUCSON AZ 220 PM MST THU JUL 25 1996 AT 21Z TUS DEW PT STILL HOLDG AT 17C WITH CONVECTION DEVELOPG ALQDS. AS PER MORNING DISCUSSION...STG DOWNBURST WIND AND FLASH FLOODING STILL PSBL OVR ALL OF CWA TGNT. ALL MODELS TENDG TO MOV UPR HI TO 4 CORNERS AREA FRI AND SAT. THIS TO PRODUCE SELY FLOW AT H5. THIS PSBLY TO INCR MSTR FROM MEXICO. NGM FCST SOUNDG FOR FRI SIMILAR TO TDA...XCP WETTER WITH PW MUCH HIER AT 1.8. ALSO FCST CAPE GTR THAN 2000 ALONG MEX BORDER W OF OLS. THUS ANOTHER ROUND OF SVR LIKELY. MIN TEMPS WILL DEPEND ON LOCATION OF TSTMS AND OUTFLOWS. EXPECT MINS IN ZN23 TO DROP ANYWHERE FROM 3-8 DEGREES TGNT.
In the hours before
Special weather statement, Jul 25, 2:29 PM MST, 1 hour 23 minutes before
AZZ026-252200- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE TUCSON ARIZONA 232 PM MST THU JUL 25 1996 ...SEVERE THUNDERSTORM WARNING FOR NORTHWEST COCHISE COUNTY WAS ALLOWED TO EXPIRE AT 230 PM... AT 225 PM TUCSON DOPPLER RADAR INDICATED THAT THE SEVERE THUNDERSTORM NEAR BENSON HAS WEAKENED BELOW SEVERE LIMITS. MOVEMENT OF THE STORMS IS TO THE SOUTH AROUND 10 MPH AND WILL CONTINUE TOWARD ST. DAVID BY 245 PM. A SPOTTER NEAR BENSON REPORTED ONE INCH DIAMETER HAIL FROM THIS STORM. ADDITIONAL SEVERE WEATHER IS POSSIBLE FROM THIS STORM AS IT CONTINUES TO MOVE SOUTN ACROSS WEST-CENTRAL COCHISE COUNTY. GLUECK &
The office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 24, 6:44 PM MST | Severe Thunderstorm Warning | TWC | Cochise, Graham | 61 min |
| Jul 25, 12:19 PM MST | Severe Thunderstorm Warning | TWC | Cochise | 41 min |
| Jul 25, 1:05 PM MST | Severe Thunderstorm Warning | TWC | Pinal | 40 min |
| Jul 25, 1:26 PM MST | Severe Thunderstorm Warning | TWC | Cochise | 64 min |
| Jul 25, 2:10 PM MST | Severe Thunderstorm Warning | TWC | Pima, Santa Cruz | 65 min |
| Jul 25, 2:15 PM MST | Severe Thunderstorm Warning | TWC | Pima | 60 min |
| Jul 25, 2:45 PM MST | Flash Flood Warning | TWC | Pima | 60 min |
| Jul 25, 3:15 PM MST | Severe Thunderstorm Warning | TWC | Pima | 60 min |
| Jul 25, 4:02 PM MST | Flash Flood Warning | TWC | Pima | 58 min |
| Jul 25, 4:46 PM MST | Severe Thunderstorm Warning | TWC | Pinal | 59 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.