Alert archive / Arizona / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 19, NWS Tucson, AZ

June 6, 1997Greenlee County, Arizona

NWS Tucson, AZ issued this severe thunderstorm warning at Jun 6, 1997, 9:12 PM MST for Greenlee County, Arizona. It was in force for 33 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: Jun 6, 1997, 9:12 PM MST (04:12 UTC)
Expired: Jun 6, 1997, 9:45 PM MST
In force: 33 min
Issued by: NWS Tucson, AZ
Area: Whole counties

County Greenlee County, AZ

The radar

The Tucson radar (KEMX), 196 km from the middle of the area, began a volume at 04:14 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Tuscon, AZ (KTUS), launched 00:00Z, 4.2 hours before the alert went out and 194 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: 94 J/kg
Mixed-layer CIN: -5 J/kg
Mixed-layer LCL: 3350 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 4 m²/s²
0-3 km storm-relative helicity: 120 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KTUS 070412 RRA
SVRTUS
AZC011-070445-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TUCSON AZ
912 PM MST FRI JUN 6 1997

THE NATIONAL WEATHER SERVICE IN TUCSON AZ HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 945 PM MST
FOR PEOPLE IN THE FOLLOWING LOCATION...

IN SOUTHEASTERN ARIZONA

   ...CENTRAL GREENLEE COUNTY
 
AT 911 PM MST...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 17
MILES SOUTH SOUTHEAST OF CLIFTON OR 9 MILES SOUTHEAST OF GUTHRIE
MOVING NORTH AT 50 MPH. THIS STORM IS CAPABLE OF ONE AND HALF INCH
HAIL AND WINDS GUSTS TO 65 MPH.

SOME LOCATIONS IN THE PATH OF THIS STORM ARE...
GUTHRIE                 BY 912 PM MST
CLIFTON               n  BY 921 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 Jun 6, 9:03 PM MST, 9 minutes earlier.

Area forecast discussion, Jun 6, 9:03 PM MST, 9 minutes before

SOUTHEAST ARIZONA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TUCSON AZ
900 PM MST FRI JUN 6 1997

TIGHTLY WRAPPED CUT OFF LOW EVIDENT OVR SW AZ ON WV IMAGERY THIS
EVE. TS ACTIVITY AHD OF THIS LOW DECRSG IN FAR ERN PARTS OF CWA
...ALTHO STILL QUITE STG AT 04Z. CONVECTION CONTS SW OF ZN 26 OVR
NRN BAJA. XPCT THIS AREA TO PRST AND SPRD INTO THAT ZN OVRNGT. WL
UPDT ERN ZNS ARND 05Z TO REMOVE TS FOR THE 1ST PD.

00Z NGM TAKES LOW NEWD RATHER THAN EWD SAT. A MORE NLY TRACK
WOULD TAKE CONVECTION SAT INTO CNTRL AND NRN AZ RATHER THAN ACRS
OUR CWA. WL STICK WITH ETA ONCE AGAIN. CD CORE ALF OVR ZN 26 SAT
AFTN. XPCT MSTR ASSOCD WITH LOW CNTR TO SPRD INTO ZNS 27/28 BY
AFTN AND INTO ZNS 19/29/30 LATEX IN THE DAY. CONVECTION MAY CONT
WELL INTO SAT NGT ERN HALF OF CWA AS LOW CNTR MOVS OVHD. DRYING
TREND STARTS SUN AS LOW OPENS AND LIFTS NEWD OUT OF AZ. TUS 0440.
OKULSKI

TUS...NONE

In the hours before

Local storm report, Jun 6, 3:14 PM MST, 5 hours 58 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TUCSON
315 PM MST FRI JUN 6 1997

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

1215 PM    SAF8FORD                   AZ   WIND
06/06/97   GRAHAM                         ROOF BLOWN OFF
                                          DOWNED POWER POLES
                                          LARGE LIMBS OFF TREES

The office that day

Everything else NWS Tucson, AZ issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 6, 7:11 PM MST	Severe Thunderstorm Warning	TWC	Graham, Greenlee	24 min
Jun 6, 8:20 PM MST	Severe Thunderstorm Warning	TWC	Greenlee	30 min

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; radar from the NEXRAD Level II archive.