Alert archive / Arizona / Flash Flood Warnings in 1997

Flash Flood Warning 14, NWS Tucson, AZ

August 3, 1997Cochise County, Arizona

NWS Tucson, AZ issued this flash flood warning at Aug 3, 1997, 5:20 PM MST for Cochise County, Arizona. It was in force for 85 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 3, 1997, 5:20 PM MST (00:20 UTC)
Expired: Aug 3, 1997, 6:45 PM MST
In force: 85 min
Issued by: NWS Tucson, AZ
Area: Whole counties

County Cochise County, AZ

The nearest sounding before it

Tuscon, AZ (KTUS), launched 00:00Z, 0.3 hours before the alert went out and 113 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: 248 J/kg
Mixed-layer CIN: -194 J/kg
Mixed-layer LCL: 1807 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: -1 m²/s²
0-3 km storm-relative helicity: 28 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 flash flood 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 flash flood warning went out at Aug 3, 2:15 PM MST, 3 hours 5 minutes earlier.

Area forecast discussion, Aug 3, 2:15 PM MST, 3 hours 5 minutes before

SOUTHEAST ARIZONA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TUCSON AZ
215 PM MST SUN AUG 3 1997

GETTING A LTL BUSY HERE WITH MAIN AREA OF ACTVTY AT 21Z ACRS
ZN28 WHERE FFA WAS JUST ISSUED. LUKS LIKE THIS AREA MAY SEE
TRAINING EFFECT WITH STLT PICS SHOWG MORE DVLPMNT S OF OLS.

VORT MAX VCNTY OF NRN GLFCA..AS OF 2030Z..MOVG SLOLY N AND WL
BE N OF YUM THIS EVENG AND CONT N UP CO RVR VLY TNGT/MON MRNG.
PLENTY OF CLD CVR ARND THIS MRNG TO KP TEMPS DOWN BUT DYNAMICS
ASSOCD WITH VORT MAX PROVIDING THE NEEDED LIFT. GENLY SCT TS
TNGT WITH BEST CHC OF SVR TS W OF TUS WITH BETTER SHEAR PROFILES.
OTRW MAIN THREAT WL BE LCLY HVY RNFL AS VERY HIGH PW VALUES SEEN
ON MRNG RAOBS AND GOES-9 SOUNDER.

SHULD SEE SOME DRYING NXT CPL DAYS BUT WL CONT STANDARD MONSOON
FCSTS WITH SCT AFTN/EVENG TSTMS WITH LCLY HVY RNFL THREAT AGN
MON/TUE. TEMPS WL BE SLOW TO RECOVER MON/TUS SO WL UNDERCUT MOS
BOTH DAYS. TUS 4343. GLUECK

TUS...FFA ZN 28 UNTIL 04Z.

In the hours before

Special weather statement, Aug 3, 11:50 AM MST, 5 hours 30 minutes before

AZZ019-026>030-032300-
SPECIAL WEATHER STATEMENT...SOUTHEAST ARIZONA CONVECTIVE OUTLOOK
NATIONAL WEATHER SERVICE TUCSON AZ
1145 AM MST SUN AUG 3 1997...THIS PRODUCT IS NOT UPDATED.

                AREAL    PROBABILITY   RAIN GREATER THAN   STORM
              COVERAGE    OF SEVERE     1.00       2.00    MOTION

COCHISE          40          10          20         10     NW 15
GRAHAM           40          10          20         10     NW 15
GREENLEE         40          10          20         10     NW 15
TUCSON/ERN PIMA  40          20          20         10     NW 15
TOHONO OODHAM   50          30          30         10     N  15
WESTERN PIMA     70          50          30         10     N  15
SOUTHEAST PINAL  50          20          20         10     NW 15
SANTA CRUZ       40          20          20         10     NW 15

SYNOPSIS...
A SUBTROPICAL WEATHER DISTURBANCE WILL MOVE THROUGH SOUTHWEST
ARIZONA THIS AFTERNOON. THIS SYSTEM WILL ENHANCE AFTERNOON AND
EVENING THUNDERSTORM ACTIVITY ACROSS SOUTHEAST ARIZONA. THE VERY
MOIST AND UNSTABLE ATMOSPHERE OVER THE REGION MAY ALLOW SOME
STORMS TO PRODUCE OVER 1.00 INCH RAINFALL ACCUMULATIONS.

*****************************************************************
KEY...
AREAL COVERAGE - PERCENT OF COUNTY OR AREA THAT WILL EXPERIENCE
                  THUNDERSTORMS
PROB OF SEVERE - THE PROBABILITY THAT ANY ONE OF THE STORMS WILL
                  REACH SEVERE LEVELS (DAMAGING WIND AND/OR
                  LARGE HAIL)
RAIN GRTR THAN - THE PROBABILITY THAT ANY ONE OF THE STORMS WILL
                  PRODUCE RAIN EXCEEDING 1 INCH OR 2 INCHES IN
                  ANY LOCATION
STORM MOTION   - GENERAL DIRECTION TO WHICH THE STORMS WILL
                  LIKELY MOVE AND SPEED IN MPH

NOTE...
VALID TIME IS FROM 12 NOON TO 12 MIDNIGHT OF THE DAY OF ISSUANCE

THIS PRODUCT IS NOT TO BE USED IN PLACE OF SEVERE THUNDERSTORM OR
FLASH FLOOD WARNINGS OR WATCHES. THIS PRODUCT IS ONLY USED FOR
OUTLOOK PURPOSES.

END/GLUECK

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 3, 5:20 PM MST	Flash Flood Warning	TWC	Cochise	55 min
Aug 4, 1:02 PM MST	Severe Thunderstorm Warning	TWC	Pima	48 min
Aug 4, 1:39 PM MST	Severe Thunderstorm Warning	TWC	Pima, Santa Cruz	51 min
Aug 4, 2:06 PM MST	Severe Thunderstorm Warning	TWC	Pima	44 min
Aug 4, 2:39 PM MST	Severe Thunderstorm Warning	TWC	Pinal	46 min
Aug 4, 3:22 PM MST	Severe Thunderstorm Warning	TWC	Pinal	33 min
Aug 4, 4:17 PM MST	Severe Thunderstorm Warning	TWC	Pima	63 min

Nearby

Flash Flood Warnings in Arizona, 1997 Every flash flood 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.