Alert archive / Arizona / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 69, NWS Tucson, AZ

August 14, 1997Pima County, Arizona

NWS Tucson, AZ issued this severe thunderstorm warning at Aug 14, 1997, 8:53 PM MST for Pima County, Arizona. It was in force for 52 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
Aug 14, 1997, 8:53 PM MST (03:53 UTC)
Expired
Aug 14, 1997, 9:45 PM MST
In force
52 min
Issued by
NWS Tucson, AZ
Area
Whole counties

County Pima County, AZ

The radar

The Tucson radar (KEMX), 112 km from the middle of the area, began a volume at 03:57 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, 3.9 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-pSkew-T log-p diagram, Tuscon, AZ at 00:00Z on 1997-08-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 435 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Tuscon, AZ at 00:00Z on 1997-08-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 30 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
435 J/kg
Mixed-layer CIN
-25 J/kg
Mixed-layer LCL
2878 m above ground
0-6 km bulk shear
7 kt
0-1 km storm-relative helicity
30 m²/s²
0-3 km storm-relative helicity
13 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 150354 RRA
SVRTUS
AZC019-150445-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TUCSON AZ
853 PM MST THU AUG 14 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 SOUTHERN ARIZONA

   ...EASTERN PIMA COUNTY
 
AT 852 PM MST...DOPPLER RADAR INDICATED AN AREA OF SEVERE
THUNDERSTORMS SOUTH OF INTERSTATE 10 AND JUST EAST OF GREEN VALLEY.
MOVEMENT WAS TO THE SOUTHEAST AT 20-25 MPH. A PORTION OF THESE
STORMS ARE EXPECTED TO HIT THE VAIL AREA BY 905 PM.

MEYER

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 Aug 14, 2:15 PM MST, 6 hours 38 minutes earlier.

Area forecast discussion, Aug 14, 2:15 PM MST, 6 hours 38 minutes before
SOUTHEAST ARIZONA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TUCSON AZ
215 PM MST THU AUG 14 1997

ISOLD TO SCT TSRA CONT TO FIRE ERN ZNS THIS AFTN. AMS DRIER THAN
24 HRS AGO SO FLASH FLOOD AND SVR WX THREAT DIMINISHED THIS
EVE...BUT STILL PSBL. MID/UPR LVL WLY FLOW SHOULD KEEP THE DP
MSTR OVR SONORA FM MOVG N INTO AZ...BUT MINOR SEEPS PSBL THRU
SAT. LATEST GOES9 SNDR PW IMAGERY SUPPORTS THIS TREND FOR AT
LEAST TNGT.

12Z ETA BRNGS A VORT MAX THRU SRN AZ FRI. ETA GUID SUGGESTS THIS
FEATURE WL HAVE ENOUGH H7 UVV TO WORK ON RESIDUAL LOW LVL RH FOR
INCRSD ACTIVITY...SPCLLY ERN ZNS. WL STICK WITH A LOW GRADE
MONSOON FCST AND WAIT AND SEE WHAT HAPPENS.

H5 HI BLDS NWD SAT AS STG H3 JET AXIS RETREATS NWD. CONSENSUS
AMONGST FCSTRS AT BLAST UP DSCN WAS TO WAIT FOR UPSWING IN
ACTIVITY TIL THE EXTENDED PD. THEREFORE LITTLE CHG FCST FOR THE
FIRST HALF OF THIS WEEKEND. TUS 2222. OKULSKI

TUS...NONE.

In the hours before

Local storm report, Aug 14, 4:35 PM MST, 4 hours 18 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TUCSON
435 PM MST THU AUG 14 1997

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

445 PM     DUDLEYVILLE 8SW           AZ   FLASH FLOOD
08/13/97   PINAL                          RANCH ROADS IMPASSABLE
                                          DUE TO FLOODING

600 PM     TUCSON                    AZ   FLASH FLOOD
08/13/97   PIMA                           SEVERAL UNDERPASSES
                                          CLOSED ON WEST SIDE DUE
                                          TO FLODDING...CAR
                                          CAUGHT IN FLOODED
                                          UNDERPASS NEAR 6TH AND
                                          STONE

616 PM     TUCSON 10W                AZ   WIND
08/13/97   PIMA                           WIND GUST TO 89 MPH AT
                                          RYAN FIELD AIRPORT...
                                          ROOF DAMAGE TO BUILDING

630 PM     TUCSON 12W                AZ   FLASH FLOOD
08/13/97   PIMA                           AREA NEAR BRAWLEY WASH
                                          FLOODED...MILE WIDE
										  ROAD FLOODED

END/MEYER
Local storm report, Aug 14, 4:41 PM MST, 4 hours 12 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TUCSON
435 PM MST THU AUG 14 1997

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

445 PM     DUDLEYVILLE 8SW           AZ   FLASH FLOOD
08/13/97   PINAL                          RANCH ROADS IMPASSABLE
                                          DUE TO FLOODING

600 PM     TUCSON                    AZ   FLASH FLOOD
08/13/97   PIMA                           SEVERAL UNDERPASSES
                                          CLOSED ON WEST SIDE DUE
                                          TO FLODDING...CAR
                                          CAUGHT IN FLOODED
                                          UNDERPASS NEAR 6TH AND
                                          STONE

616 PM     TUCSON 10W                AZ   WIND
08/13/97   PIMA                           WIND GUST TO 89 MPH AT
                                          RYAN FIELD AIRPORT...
                                          ROOF DAMAGE TO BUILDING

630 PM     TUCSON 12W                AZ   FLASH FLOOD
08/13/97   PIMA                           AREA NEAR BRAWLEY WASH
                           z               FLOODED...MILE WIDE
										  ROAD FLOODED

END/MEYER
Local storm report, Aug 14, 4:42 PM MST, 4 hours 11 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TUCSON
435 PM MST THU AUG 14 1997

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

445 PM     DUDLEYVILLE 8SW           AZ   FLASH FLOOD
08/13/97   PINAL                          RANCH ROADS IMPASSABLE
                                          DUE TO FLOODING

600 PM     TUCSON                    AZ   FLASH FLOOD
08/13/97   PIMA                           SEVERAL UNDERPASSES
                                          CLOSED ON WEST SIDE DUE
                                          TO FLODDING...CAR
                                          CAUGHT IN FLOODED
                                          UNDERPASS NEAR 6TH AND
                                          STONE

616 PM     TUCSON 10W                AZ   WIND
08/13/97   PIMA                           WIND GUST TO 89 MPH AT
                                          RYAN FIELD AIRPORT...
                                          ROOF DAMAGE TO BUILDING

630 PM     TUCSON 12W                AZ   FLASH FLOOD
08/13/97   PIMA                           AREA NEAR BRAWLEY WASH
                           ~               FLOODED...MILE WIDE
                                          ROAD FLOODED

END/MEYER

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 14, 9:27 PM MSTSevere Thunderstorm WarningTWCPima48 min

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; radar from the NEXRAD Level II archive.