Alert archive / Arizona / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 46, NWS Tucson, AZ
NWS Tucson, AZ issued this severe thunderstorm warning at Aug 16, 2001, 9:16 PM MST for Pinal County, Arizona. It was in force for 29 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.
The facts
- Issued
- Aug 16, 2001, 9:16 PM MST (04:16 UTC)
- Expired
- Aug 16, 2001, 9:45 PM MST
- In force
- 29 min
- Issued by
- NWS Tucson, AZ
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Pinal County, AZ
The nearest sounding before it
Tuscon, AZ (KTUS), launched 00:00Z, 4.3 hours before the alert went out and 93 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
- 378 J/kg
- Mixed-layer CIN
- -80 J/kg
- Mixed-layer LCL
- 2903 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 7 m²/s²
- 0-3 km storm-relative helicity
- 22 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
370 WUUS55 KTWC 170417 SVRTUS AZC021-170445- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TUCSON AZ 916 PM MST THU AUG 16 2001 THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... EAST CENTRAL PINAL COUNTY IN ARIZONA * UNTIL 945 PM MST * AT 915 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 6 MILES NORTHEAST OF KEARNY...OR ABOUT 21 MILES SOUTH OF GLOBE...MOVING SOUTHWEST AT 10 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... KEARNY AND KELVIN AT 935 PM MST WIND GUSTS TO 60 MPH...LARGE HAIL...DAMAGING WINDS IN EXCESS OF 60 MPH...DEADLY LIGHTNING...AND HEAVY RAIN CAN BE EXPECTED. LAT...LON 3300 11079 3316 11090 3303 11114 3286 11099 PYTLAK
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 Aug 16, 9:13 PM MST, 3 minutes earlier.
Area forecast discussion, Aug 16, 9:13 PM MST, 3 minutes before
SOUTHEAST ARIZONA FORECAST DISCUSSION NATIONAL WEATHER SERVICE TUCSON AZ 913 PM MST THU AUG 16 2001 .SYNOPSIS...HIGH PRESSURE WILL BUILD IN FROM THE WEST THE NEXT FEW DAYS. THE RESULTING FLOW PATTERN WILL DIMINISH THUNDERSTORM COVERAGE...ESPECIALLY OVER THE WESTERN DESERTS...WITH DRIER AIR TO THE NORTH AND DEEPER MOISTURE IN NORTHERN MEXICO. BY EARLY NEXT WEEK...THE HIGH MOVES EAST OF ARIZONA AND THE FLOW BECOMES FAVORABLE FOR A RETURN TO NORMAL THUNDERSTORM ACTIVITY. .DISCUSSION...SOMEWHAT DISORGANIZED, RATHER ISOLATED, BUT STRONG TSTMS CONTINUE TO DROP SW THROUGH THE CWA AS THE DEFORMATION AXIS CONTINUES TO SHIFT W. COCHISE COUNTY GOT WORKED OVER THIS EVENING, BUT UPPER DIVERGENCE ZONE REMAINS FOCUSED NEAR THE SONORA-ARIZONA- NEW MEXICO TRIPLE POINT. THE ONE SAVING GRACE IN THE PAST 2-3HRS IS THAT THE STORMS ARE NOW WORKING OFF THE FASTER MID LEVEL FLOW AND ARE NOW CRUISING AT 15-20KTS. THATLL KEEP THE THREAT OF FLASH FLOODING DOWN, ALTHOUGH WE COULD STILL GET SOME GUSTY WINDS. WELL DO A QUICK UPDATE TO KEEP SLIGHT CHANCE/ISOLATED STORMS GOING FOR MUCH OF THE NIGHT, EVEN TO THE FAR SE WHERE THE UPPER FORCING IS STRONGEST. TOOK A QUICK LOOK AT 00Z ETA AND THERE ARE NO REAL SURPRISES. UPPER DIVERGENCE BULLSEYE REMAINS OVER SE AZ THROUGH FRI NIGHT, PERHAPS ENHANCED A BIT AS THE UPPER LOW OVER SONORA MAKES A SLIGHT JOG TO THE W. INCOMING MOS GUIDANCE, JUST LIKE LAST NIGHT, IS RAMPING UP POPS FOR FRI AND ESPECIALLY FRI NIGHT. AFTER A BIG NIGHT LIKE THIS EVENING, WE USUALLY HAVE A DOWN DAY. HOWEVER, IM NOT SURE THAT RULE WILL WORK THIS TIME AROUND WITH CONTINUED DIVERGENCE ALOFT, DECENT NE-E FLOW, AND PERHAPS A LITTLE MORE MID LEVEL COOLING. I SUSPECT THE MOST LIKELY SCENARIO IS A NEAR REPEAT TOMORROW, WITH A SLOW START AND LIMITED COVERAGE, BUT WITH SOME STRONG STORMS HERE AND THERE. PYTLAK .TWC...NONE.
In the hours before
Local storm report, Aug 16, 5:47 PM MST, 3 hours 29 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TUCSON ARIZONA
547 PM MST THU AUG 16 2001
TIME (MST) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0500 PM PISINEMO AZ WIND DAMAGE
08/16/01 PIMA ROOF RIPPED OFF HOUSE IN PISINIMO
WITH POWER LINES DOWN.The office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 16, 7:02 PM MST | Severe Thunderstorm Warning | TWC | Cochise | 28 min |
| Aug 16, 7:29 PM MST | Severe Thunderstorm Warning | TWC | Cochise, Pima | 31 min |
| Aug 16, 10:03 PM MST | Severe Thunderstorm Warning | TWC | Pinal | 57 min |
| Aug 17, 1:15 AM MST | Flash Flood Warning | TWC | Pima | 30 min |
Nearby
Severe Thunderstorm Warnings in Arizona, 2001Every severe thunderstorm warning in 2001
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.