Alert archive / Arizona / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 126, NWS Tucson, AZ
NWS Tucson, AZ issued this severe thunderstorm warning at Nov 11, 1997, 3:20 PM MST for Pinal County, Arizona. It was in force for 65 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
- Nov 11, 1997, 3:20 PM MST (22:20 UTC)
- Expired
- Nov 11, 1997, 4:25 PM MST
- In force
- 65 min
- Issued by
- NWS Tucson, AZ
- Area
- Whole counties
County Pinal County, AZ
The nearest sounding before it
Tuscon, AZ (KTUS), launched 12:00Z, 10.3 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
- 150 J/kg
- Mixed-layer CIN
- -45 J/kg
- Mixed-layer LCL
- 1093 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 97 m²/s²
- 0-3 km storm-relative helicity
- 122 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted, in the capitals the NWS used until 2016.
846 WUUS1 KTUS 112221 RRA SVRTUS AZC021-112325- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TUCSON AZ 320 PM MST TUE NOV 11 1997 THE NATIONAL WEATHER SERVICE IN TUCSON AZ HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 425 PM MST FOR PEOPLE IN THE FOLLOWING LOCATION... IN SOUTH CENTRAL ARIZONA ...NORTHEASTERN PINAL COUNTY AT 319 PM MST... DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 9 MILES WEST OF KELVIN MOVING EAST AT 15 MPH. SOME LOCATIONS IN THE PATH OF THIS STORM ARE... KELVIN BY 348 PM MST KEARNY BY 402 PM MST
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 Nov 11, 2:47 PM MST, 33 minutes earlier.
Area forecast discussion, Nov 11, 2:47 PM MST, 33 minutes before
SOUTHEAST ARIZONA FORECAST DISCUSSION NATIONAL WEATHER SERVICE TUCSON AZ 230 AM MST TUE NOV 11 1997 COLD AIR STORMS POPPED UP THIS AFTN SHOULD GO AWAY AT SUNSET. PWATER SAT PIX SHOWS MSTR ADVECTING IN FROM SOUTH IN FRONT OF NEXT SYS. MODELS WAY OFF ON STRENGTH AND ONLY MODEL THAT SEEMS CLOSE TO REALITY IS EMCWF. THIS WOULD BE A COLDER WETTER STORM FOR NOT ONLY SE AZ BUT POSSIBLY REST OF STATE. TONIGHTS MODEL RUNS MAY BE BETTER AS SYS GETS CLOSE TO COAST BUT WE PUBLISH NOW SO WILL GO WITH STRONGER STORM SCENARIO. WILL HOLD OFF ON ANY WSW FOR NOW BUT COULD GET QUITE INTERESTING LATE ON WED AS COLD AIR ALOFT MOVES IN. BUT MID LVLS SHOULD WARM SOME TONIGHT AND MOST OF THE DAY WED AS WARM AIR ADVECTS IN FROM SOUTH. MM5 SHOWED +2C DEWPOINTS AT H7 BY 12Z AND THINK SNOW ON OUR MTNS UNLIKELY UNTIL LATE WED. THIS MAY LIMIT HOW MUCH SNOW FALLS SINCE SYS MAY NOT HANG AROUND LONG ENUF FOR BIG DUMPER. EXPECT IT TO BE OUT OF STATE BY THU AM. NEXT SYS LINED UP FOR THU NIGHT AND FRI. GIVEN MODELS PERFORMANCE ON LAST TWO SYS BELIEVE IT WILL ALSO PRODUCE RAIN AND BE STRONGER THAN NOW FCST BY MODELS. ALSO ADDED HEAVY PRECIP POTENTIAL FOR ZONE 30...COULD ALSO OCCUR IN OTHER ZONES. POTENTIAL FOR AN INCH OR SO IN MTNS. VALLEYS SHOULD SEE UP TO HALF INCH WITH MAYBE ANOTHER QUARTER INCH WED NIGHT. ENDED ALL PRECIP FOR DAY THU BUT MAY GET SOME INSTABILITY SHOWERS LIKE TODAY. GUESSING...ERR FORECASTING THIS WONT HAPPEN FOR NOW. TUS 2770. HOLBROOK TUS...NONE YET.
Nearby
Severe Thunderstorm Warnings in Arizona, 1997Every severe thunderstorm warning in 1997
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.