Alert archive / Arizona / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 102, NWS Tucson, AZ

September 8, 1997Pima County, Arizona

NWS Tucson, AZ issued this severe thunderstorm warning at Sep 8, 1997, 6:28 PM MST for Pima County, Arizona. It was in force for 47 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: Sep 8, 1997, 6:28 PM MST (01:28 UTC)
Expired: Sep 8, 1997, 7:15 PM MST
In force: 47 min
Issued by: NWS Tucson, AZ
Area: Whole counties

County Pima County, AZ

The nearest sounding before it

Tuscon, AZ (KTUS), launched 00:00Z, 1.5 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 190 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 3366 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: 58 m²/s²
0-3 km storm-relative helicity: 67 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KTUS 090130 RRA
SVRTUS
AZC019-090215-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TUCSON AZ
628 PM MST MON SEP 8 1997

THE NATIONAL WEATHER SERVICE IN TUCSON AZ HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 715 PM MST
FOR PEOPLE IN THE FOLLOWING LOCATION...

IN SOUTHERN ARIZONA

   ...CENTRAL PIMA COUNTY
 
AT 625 PM MST...TUCSON DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
ALONG STATE HIGHWAY 86 SIX MILES NORTH NORTHEAST OF KITT PEAK MOVING
WEST AT 10 MPH. THIS STORM WAS CAPABLE OF PRODUCING 65 MPH WIND
GUSTS...ONE INCH DIAMETER HAIL...VISIBILITIES REDUCED BELOW 1/2
MILE IN BLOWING DUST AND HEAVY RAIN.

SOME LOCATIONS IN THE PATH OF THIS STORM ARE...b
KITT PEAK                BY 643 PM MST


OKULSKI

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 Sep 8, 2:30 PM MST, 3 hours 58 minutes earlier.

Area forecast discussion, Sep 8, 2:30 PM MST, 3 hours 58 minutes before

SOUTHEAST ARIZONA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TUCSON AZ
230 PM MST MON SEP 8 1997

MM5 DEVELOPS BIG COMPLEX 120 OR SO MILES SOUTH OF BISBEE THIS
EVENING THEN PUSHES THE SYS NORTH TO BORDER BY 12Z. THIS MAY FALL
APART BEFORE REACHING BORDER BUT IMPORTANT ASPECT IS THAT IT
PUSHES A SIG AMOUNT OF LOW LVL MSTR NWD SETTING UP TUE FOR TSTMS
ALONG THE BORDER. SO WILL WORD ZONES FOR THIS EFFECT AND INCREASE
POPS ALONG BORDER.

OTRW...DRY TONGUE AT H7 MOVG OVR AREA TODAY AS BEST MSTR MOVES
FROM GULF OF CA TOWARDS LAS. MM5 HINTS AT LAS STORMS EXTENDING
SWD ACROSS WRN AZ DESERTS THIS AFTN/EVE POSSIBLY AS FAR SOUTH AS
I-8. ISOLD STUFF MAINLY NR MTNS DOWN HERE.

UPR LOW TO THE SOUTH APPEARS TO BE ON THE MOVE AFTER SITTING IN
CNTRL MEX A COUPLE OF DAYS. MM5 WANTS TO WEAKEN THIS SYS AND MOVE
IT EWD...BUT SAT PIX SHOWING IT MOVG WWD...MAY PLAY A FACTOR IN
SE AZ WX LATER IN THE WEEK.

BACK DOOR FRONT TO DROP INTO NM ON WED MAY INCREASE OUR MSTR THU.
TUS 2222. HOLBROOK

TUS...NONE.

In the hours before

Local storm report, Sep 8, 4:45 PM MST, 1 hour 43 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TUCSON ARIZONA
445 PM MST MON SEP 08 1997

TIME(MST)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0340 PM    ORO VLY                   AZ
09/08/97   PIMA                           NUMEROUS REPORTS OF MARBLE
                                          SIZE HAIL...STREET
                                          FLOODING. TREE LIMBS
                                          BROKEN OFF TREES. MANY
                                          WIND ESTIMATES GUST 50
                                          MPH.

Local storm report, Sep 8, 4:47 PM MST, 1 hour 41 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TUCSON ARIZONA
445 PM MST MON SEP 08 1997

TIME(MST)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0340 PM    ORO VLY                   AZ
09/08/97   PIMA                           NUMEROUS REPORTS OF MARBLE
                                          SIZE HAIL...STREET
                                          FLOODING. TBREE LIMBS
                                          BROKEN OFF TREES. MANY
                                          WIND ESTIMATES GUST 50
                                          MPH.

Nearby

Severe Thunderstorm Warnings in Arizona, 1997 Every 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.