Alert archive / Arizona / Severe Thunderstorm Warnings in 1996
Severe Thunderstorm Warning 25, NWS Phoenix, AZ
NWS Phoenix, AZ issued this severe thunderstorm warning at Aug 8, 1996, 7:00 PM MST for Pinal County, Arizona. It was in force for 60 min. 3 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
- Aug 8, 1996, 7:00 PM MST (02:00 UTC)
- Expired
- Aug 8, 1996, 8:00 PM MST
- In force
- 60 min
- Issued by
- NWS Phoenix, AZ
- Area
- Whole counties
County Pinal County, AZ
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 8, 7:00 PM MST | Thunderstorm Wind 52 | Florence, AZ | |
| Aug 8, 7:05 PM MST | Thunderstorm Wind 52 | Casa Grande, AZ | |
| Aug 8, 7:13 PM MST | Thunderstorm Wind 52 | Florence, 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 00:00Z, 2.0 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.
- Mixed-layer CAPE
- 338 J/kg
- Mixed-layer CIN
- -71 J/kg
- Mixed-layer LCL
- 2486 m above ground
- 0-6 km bulk shear
- 8 kt
- 0-1 km storm-relative helicity
- -40 m²/s²
- 0-3 km storm-relative helicity
- -12 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
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.
In the hours before
Special weather statement, Aug 8, 1:23 PM MST, 5 hours 37 minutes before
AZZ015>026-091200- SEVERE WEATHER OUTLOOK FOR THE SOUTHERN HALF OF ARIZONA NATIONAL WEATHER SERVICE PHOENIX AZ 123 PM MST THU AUG 8 1996 ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS IN SANTA CRUZ AND COCHISE COUNTIES THIS AFTERNOON AND EVENING... SOUTHEAST WINDS BROUGHT AN INCREASE IN MOISTURE TO MUCH OF SOUTHERN ARIZONA DURING THE PAST 24 HOURS...ESPECIALLY THE SOUTHEAST PORTION. THE INCREASE WAS MOSTLY IN THE MIDDLE LEVELS OF THE ATMOSPHERE FROM AROUND 13,000 FEET TO 21,000 FEET. COUPLED WITH SOME COOLING ALOFT ...THIS RESULTED IN MORE UNSTABLE AIR AND INCREASED THE POTENTIAL FOR THUNDERSTORM DEVELOPMENT. AT THE SAME TIME...RELATIVELY DRIER AIR IN THE LOWER LEVELS OF THE ATMOSPHERE HAS CREATED A POTENTIAL FOR STRONG DOWNBURST WINDS WITH SOME STORMS. WIDELY SCATTERED THUNDERSTORMS ARE EXPECTED OVER SOUTHERN ARIZONA... EXCEPT IN THE FAR SOUTHWEST...THIS AFTERNOON AND EVENING. THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS WITH DAMAGING WINDS...DOWNBURST WINDS IN EXCESS OF 58 MPH...OVER COCHISE AND SANTA CRUZ COUNTIES WITH SOME OF THESE STORMS. REMEMBER...THUNDERSTORMS PRODUCE DEADLY LIGHTNING...AND MAY PRODUCE GUSTY WINDS ...BLOWING DUST AND BRIEF HEAVY RAIN. SOME OF THE HAZARDS TO MOTORISTS AND OTHERS WITH OUTDOOR INTERESTS INCLUDE LIGHTNING... REDUCED VISIBILITY AND THE RESULTS OF HEAVY RAIN. PEOPLE IN SOUTHERN ARIZONA...ESPECIALLY IN THE SOUTHEAST...SHOULD REMAIN AWARE OF THE WEATHER AND EXERCISE CAUvTION IF SEVERE WEATHER THREATENS THEIR AREA. WILT
The office that day
Everything else NWS Phoenix, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 8, 6:25 PM MST | Flash Flood Warning | PSR | Pinal | 50 min |
| Aug 8, 6:25 PM MST | Severe Thunderstorm Warning | PSR | Pinal | 50 min |
| Aug 9, 4:35 PM MST | Severe Thunderstorm Warning | PSR | Maricopa | 70 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.