Alert archive / Arizona / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 63, NWS Tucson, AZ

August 9, 1997Pima County, Arizona

NWS Tucson, AZ issued this severe thunderstorm warning at Aug 9, 1997, 6:24 PM MST for Pima County, Arizona. It was in force for 51 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 9, 1997, 6:24 PM MST (01:24 UTC)
Expired
Aug 9, 1997, 7:15 PM MST
In force
51 min
Issued by
NWS Tucson, AZ
Area
Whole counties

County Pima County, AZ

The nearest sounding before it

Tuscon, AZ (KTUS), launched 00:00Z, 1.4 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 1997-08-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 187 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 1997-08-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -6 square meters per square second.193958Sfc1 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
187 J/kg
Mixed-layer CIN
-38 J/kg
Mixed-layer LCL
2189 m above ground
0-6 km bulk shear
10 kt
0-1 km storm-relative helicity
-6 m²/s²
0-3 km storm-relative helicity
46 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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 9, 2:30 PM MST, 3 hours 54 minutes earlier.

Area forecast discussion, Aug 9, 2:30 PM MST, 3 hours 54 minutes before
SOUTHEAST ARIZONA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TUCSON AZ
230 PM MST SAT AUG 9 1997

CLDS BROKE LATE MRNG WITH ISOLD TSTMS DVLPG OVR MAINLY HIGHER
TERRAIN. ENVIRONMENTAL FLOW MODIFIED BY LAST NGTS COMPLEX WITH
SWLY STEERING FLOW MERGING INTO MORE PERMANENT FEATURE AS
SHIFTING RDG CONTS THIS TREND. AREAS RECEIVING THE MOST RAINFALL
YDA...GENERALLY ZNS026>028...NOT SHOWING MUCH OF ANYTHING. MORE
STABLE PROFILE EVIDENT ON 12Z RAOB WITH SFC TEMPS STRUGGLING.
ISOLD EVE STORMS (UNORGANIZED ACTIVITY DOING BETTER S OF THE
BORDER) THEN DECRG CLDS. TMW SHUD SEE REBOUND IN AFTN HEATING
ALONG WITH MORE THAN SUFFICIENT LOW LVL MSTR FOR BETTER COVERAGE
AND SUPPORT IN THE VALLEYS. INTERESTING...STG AND DEEP SELY FLOW
ON KYUX VWP.

SWLY FLOW SETTING UP MAY DECR MID LVL MSTR A LTL...BUT LWR LVLS
WILL HANG IN THERE JUST FINE FOR NOW (NGM WRONG). SCT TSTMS WITH
TYPICAL DIURNAL MONSOON FCST INTO THE EXTD. FINE TUNING AS
DETAILS SHOW THEMSELVES. TUS 0343. MEYER

TUS...NONE

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 9, 5:32 PM MSTFlash Flood WarningTWCPima63 min
Aug 9, 6:24 PM MSTFlash Flood WarningTWCPima51 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.