Alert archive / Arizona / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 16, NWS Tucson, AZ

June 6, 1997Graham County, Arizona

NWS Tucson, AZ issued this severe thunderstorm warning at Jun 6, 1997, 4:58 PM MST for Graham 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: Jun 6, 1997, 4:58 PM MST (23:58 UTC)
Expired: Jun 6, 1997, 5:45 PM MST
In force: 47 min
Issued by: NWS Tucson, AZ
Area: Whole counties

County Graham County, AZ

The radar

The Tucson radar (KEMX), 135 km from the middle of the area, began a volume at 00:04 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 6, 12:00 PM MST	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Tuscon, AZ (KTUS), launched 12:00Z, 12.0 hours before the alert went out and 127 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 3313 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 41 m²/s²
0-3 km storm-relative helicity: 265 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 062358
SVRTUS
AZC009-070045-

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

THE NATIONAL WEATHER SERVICE IN TUCSON AZ HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 545 PM MST
FOR PEOPLE IN THE FOLLOWING LOCATION...

IN SOUTHEASTERN ARIZONA

   ...SOUTH CENTRAL GRAHAM COUNTY
 
AT 454 PM MST...DOPPLER RADAR INDICATED A LINE OF SEVERE
THUNDERSTORMS FROM 15 MILES SOUTH SOUTHEAST OF SAFFORD TO 10 MILES
SOUTHEAST OF BONITA MOVING NORTH AT 40 MPH.

SOME LOCATIONS IN THE PATH OF THIS STORM ARE...
BONITA                  BY 500 PM MST
FORT GRANT              BY 505 PM MST
SAFFORD                 BY 510 PM MST
PIMA                    BY 516 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 Jun 6, 2:14 PM MST, 2 hours 44 minutes earlier.

Area forecast discussion, Jun 6, 2:14 PM MST, 2 hours 44 minutes before

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

MSTR AXIS REMAINS STNRY FROM PHX TO TUS SOUTH INTO MEX WITH DRY AIR
BETWEEN TUS AND AJO THE TSTMS WRAPPING AROUND UPR LOW. QUESTION IS
IF ANY MSTR WILL MOVE IN FROM SOUTH TO DEVELOP STORMS OVR REMAINDER
OF AREA. HAVE HAD SOME STRONG WNDS AT SAF THAT DID SOME DAMAGE AND
SVR HAIL JUST REPORTED IN CNTRL COCHISE COUNTY AND STORMS DO SEEM
TO BE INTENSIFYING.

UPR LOW WILL HANG AROUND ONE MORE DAY AND EXPECT ANOTHER ROUND OF
STORMS AGAIN SAT BUT LESS WNDS WIL ONLY MAKE HAIL THE THREAT. THEN
DRY AIR WILL WORK IN SUN WITH THE WARMING TREND. ONLY MTN TSTMS IN FAR
ERN ZONES THEN SUMMER STARTS AGAIN SUN. TUS 5440 HOLBROOK.

TUS...SVR TSTM WATCH UNTIL 700 PM ALL ZONES.
      WND ADVSY ALL ZONES XCPT 26 UNTIL 700 PM MST.

In the hours before

Local storm report, Jun 6, 2:09 PM MST, 2 hours 49 minutes before

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

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

0200 PM    SUNnSITES                  AZ   HAIL
06/06/97   COCHISE                        0.75 INCH HAIL

Local storm report, Jun 6, 3:14 PM MST, 1 hour 44 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, 12:37 PM MST	Severe Thunderstorm Warning	TWC	Pinal	33 min
Jun 6, 1:58 PM MST	Severe Thunderstorm Warning	TWC	Cochise	32 min
Jun 6, 2:59 PM MST	Severe Thunderstorm Warning	TWC	Cochise	61 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.