Alert archive / Arizona / Flash Flood Warnings in 1997

Flash Flood Warning 4, NWS Tucson, AZ

July 29, 1997Santa Cruz County, Arizona

NWS Tucson, AZ issued this flash flood warning at Jul 29, 1997, 4:00 PM MST for Santa Cruz County, Arizona. It was in force for 90 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
Jul 29, 1997, 4:00 PM MST (23:00 UTC)
Expired
Jul 29, 1997, 5:30 PM MST
In force
90 min
Issued by
NWS Tucson, AZ
Area
Whole counties

County Santa Cruz County, AZ

The radar

The Tucson radar (KEMX), 46 km from the middle of the area, began a volume at 22:59 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 12:00Z, 11.0 hours before the alert went out and 72 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 12:00Z on 1997-07-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 396 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 12:00Z on 1997-07-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 84 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
396 J/kg
Mixed-layer CIN
-143 J/kg
Mixed-layer LCL
1831 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
84 m²/s²
0-3 km storm-relative helicity
27 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KTUS 292301
FFWTUS
AZC023-300030-

BULLETIN
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TUCSON AZ
400 PM MST TUE JUL 29 1997

THE NATIONAL WEATHER SERVICE IN TUCSON AZ HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL 530 PM MST
FOR PEOPLE IN THE FOLLOWING LOCATION...

IN SOUTHERN ARIZONA

   ...NORTHERN SANTA CRUZ COUNTY
 
AT 400 PM TUCSON DOPPLER RADAR SHOWED AN AREA OF THUNDERSTORMS OVER
NORTHERN SANTA CRUZ COUNTY. SPOTTERS NEAR TUMACACORI STATE PARK
HAVE REPORTED 3 TO 4 INCHES OF RAINFALL FROM THESE STORMS SINCE 330
PM WITH WASHES FLOWING AT BANKFULL. ADDITIONAL RAINFALL WILL
CONTINUE TO FALL IN THIS AREA THROUGH 530 PM.

OKULSKI

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 28, 7:16 PM MSTSevere Thunderstorm WarningTWCSanta Cruz29 min

Nearby

Flash Flood Warnings in Arizona, 1997Every 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; radar from the NEXRAD Level II archive.