Alert archive / Arizona / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 17, NWS Tucson, AZ
NWS Tucson, AZ issued this severe thunderstorm warning at Jul 13, 2001, 5:27 PM MST for Cochise County, Arizona. It was in force for 48 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
- Jul 13, 2001, 5:27 PM MST (00:27 UTC)
- Expired
- Jul 13, 2001, 6:15 PM MST
- In force
- 48 min
- Issued by
- NWS Tucson, AZ
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Cochise County, AZ
The nearest sounding before it
Tuscon, AZ (KTUS), launched 00:00Z, 0.5 hours before the alert went out and 74 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
- 106 J/kg
- Mixed-layer CIN
- -52 J/kg
- Mixed-layer LCL
- 3507 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- -4 m²/s²
- 0-3 km storm-relative helicity
- 102 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.1
The text
As transmitted, in the capitals the NWS used until 2016.
995 WUUS55 KTWC 140027 SVRTUS AZC003-140115- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TUCSON AZ 527 PM MST FRI JUL 13 2001 THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... WEST CENTRAL COCHISE COUNTY IN ARIZONA * UNTIL 615 PM MST * AT 521 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM NEAR TEXAS CANYON ALONG I-10...OR 10 MILES EAST OF BENSON...MOVING NORTHWEST AT 15 MPH. HAIL...INTENSE RAIN...DAMAGING WINDS IN EXCESS OF 60 MPH...AND NEAR ZERO VISIBILITIES IN BLOWING DUST ARE LIKELY WITH THIS STORM. TAKE COVER IN A SUBSTANTIAL SHELTER UNTIL THE STORM PASSES. LAT...LON 3195 10997 3211 10989 3231 11032 3209 11044 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 Jul 13, 2:50 PM MST, 2 hours 37 minutes earlier.
Area forecast discussion, Jul 13, 2:50 PM MST, 2 hours 37 minutes before
SOUTHEAST ARIZONA FORECAST DISCUSSION NATIONAL WEATHER SERVICE TUCSON AZ 250 PM MST FRI JUL 13 2001 SYNOPSIS...HIGH PRESSURE TO OUR EAST WILL CONTINUE TO PROVIDE A MOIST SOUTHERLY FLOW INTO ARIZONA. HOWEVER...A SOMEWHAT DRIER SOUTHWEST FLOW WILL DEVELOP THIS WEEKEND AS A STORM SYSTEM CROSSES THE NORTHERN ROCKIES...WHILE HIGH PRESSURE SHIFTS INTO WESTERN NEW MEXICO. DISCUSSION...UPPER LOW PRESSURE CIRCULATION OVER NORTHERN BAJA ALONG WITH A SHARP MOISTURE GRADIENT ACROSS OUR EASTERN ZONES WERE THE MAIN FEATURES TO FOCUS ON THIS EVENING. LATEST RADAR AND SATELLITE IMAGERY INDICATED SCATTERED THUNDERSTORMS STRETCHING FROM THE WHITE MOUNTAINS SOUTH ALONG THE MOUNTAIN RIDGE LINES TO NEAR DOUGLAS. OTHER STORMS WERE FORMING ACROSS SOUTHWESTERN ARIZONA IN THE VICINITY OF THE UPPER LOW. THE STORMS WERE STILL RATHER ISOLATED IN NATURE...BUT MUCH STRONGER AND MORE WIDESPREAD THAN THE PAST FEW DAYS. THE PRIMARY CONCERN FROM THESE THUNDERSTORMS WILL BE LOCALLY HEAVY RAINFALL...BUT STORMS DEVELOPING ALONG THE MOISTURE GRADIENT ACROSS COCHISE...GRAHAM...AND GREENLEE COUNTIES COULD PRODUCE STRONG DOWNBURST WINDS. DECENT UPWARD VERTICAL MOTION ASSOCIATED WITH THE LOW PRESSURE SYSTEM OVER NORTHERN BAJA MAY HELP SUSTAIN CONVECTION THROUGH THE NIGHT TIME HOURS...ESPECIALLY ACROSS CENTRAL AND WESTERN PIMA COUNTY. OTHERWISE...EXPECT MOST OF THE STORMS TO DISSIPATE BY MIDNIGHT. LATEST MODELS CONTINUED TO SHOW A DRYING TREND AS A MODERATE SOUTHWESTERLY FLOW ALOFT SPREADS INTO THE WESTERN ONE-HALF OF ARIZONA. MRF MODEL WAS STILL SUGGESTING SOME POSSIBLE MOISTURE SUPPLY LINGERING ACROSS FAR EASTERN ARIZONA FOR A CONTINUED CHANCE OF AFTERNOON AND EVENING MOUNTAIN THUNDERSTORMS THROUGH NEXT WEEK. .TWC...NONE.
The office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 14, 1:42 PM MST | Severe Thunderstorm Warning | TWC | Pima | 48 min |
| Jul 14, 2:42 PM MST | Severe Thunderstorm Warning | TWC | Graham, Pima | 48 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.