Alert archive / Arizona / Flash Flood Warnings in 1997

Flash Flood Warning 21, NWS Tucson, AZ

August 8, 1997Pima County, Arizona

NWS Tucson, AZ issued this flash flood warning at Aug 8, 1997, 6:14 PM MST for Pima County, Arizona. It was in force for 61 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 8, 1997, 6:14 PM MST (01:14 UTC)
Expired
Aug 8, 1997, 7:15 PM MST
In force
61 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 01:15 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, 1.2 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 1997-08-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 657 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 1997-08-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 100 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
657 J/kg
Mixed-layer CIN
-196 J/kg
Mixed-layer LCL
1881 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
100 m²/s²
0-3 km storm-relative helicity
196 m²/s²
Significant tornado parameter
0.0
Supercell composite
6.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KTUS 090115
FFWTUS
AZC019-090215-

BULLETIN
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TUCSON AZ
614 PM MST FRI AUG 8 1997

THE NATIONAL WEATHER SERVICE IN TUCSON AZ HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL 715 PM MST
FOR PEOPLE IN THE FOLLOWING LOCATION...

IN SOUTHERN ARIZONA

   ...NORTHEASTERN PIMA COUNTY
 
AT 610 PM MST...TUCSON DOPPLER RADAR DETECTED AN AREA OF STRONG
THUNDERSTORMS IN METROPOLITAN TUCSON AND THE SURROUNDING MOUNTAINS.
THESE STORMS CONTINUE TO PRODUCE LOCALLY HEAVY RAINFALL...WHICH
WILL PROLONG FLASH FLOODING IN THE METRO AREA THROUGH 715 PM MST.
DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD AND OBEY ALL
ROAD CLOSURE SIGNS!

OKULSKI

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 8, 5:18 PM MSTFlash Flood WarningTWCPima57 min
Aug 8, 5:18 PM MSTSevere Thunderstorm WarningTWCPima57 min
Aug 8, 5:22 PM MSTFlash Flood WarningTWCPinal63 min
Aug 8, 5:22 PM MSTSevere Thunderstorm WarningTWCPinal63 min
Aug 8, 5:38 PM MSTFlash Flood WarningTWCPinal62 min
Aug 8, 5:38 PM MSTSevere Thunderstorm WarningTWCPinal62 min
Aug 8, 6:23 PM MSTSevere Thunderstorm WarningTWCPima47 min
Aug 8, 6:27 PM MSTFlash Flood WarningTWCPinal63 min
Aug 9, 4:42 PM MSTSevere Thunderstorm WarningTWCPima48 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.