Alert archive / Arizona / Flash Flood Warnings in 1997

Flash Flood Warning 65, NWS Tucson, AZ

December 6, 1997Pima County, Arizona

NWS Tucson, AZ issued this flash flood warning at Dec 6, 1997, 11:35 PM MST for Pima County, Arizona. It was in force for 115 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
Dec 6, 1997, 11:35 PM MST (06:35 UTC)
Expired
Dec 7, 1997, 1:30 AM MST
In force
115 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 06:35 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, 6.6 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 1997-12-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 1997-12-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 27 square meters per square second.1939587897117Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2124 m above ground
0-6 km bulk shear
70 kt
0-1 km storm-relative helicity
27 m²/s²
0-3 km storm-relative helicity
75 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 070638 COR
FFWTUS
AZC019-070830-

BULLETIN - EAS ACTIVATION REQUESTED
SMALL STREAM FLOOD WARNING...CORRECTED OR EXPIRATION TIME
NATIONAL WEATHER SERVICE TUCSON AZ
1135 PM MST SAT DEC 6 1997

...SMALL STREAM FLOOD WARNING FOR WESTERN AND CENTRAL PIMA COUNTY
UNTIL 130 AM MST...

AT 1125 PM MST...YUMA DOPPLER RADAR DETECTED A LINE OF STRONG
THUNDERSTORMS FROM ROCKY POINT TO ORGAN PIPE CACTUS NATIONAL
MONUMENT. THIS LINE WAS MOVING TO THE NORTHEAST AT 30 MPH.
THUNDERSTORMS ALONG THIS LINE WERE UNUSUALLY INTENSE FOR THIS TIME
OF YEAR AND WILL BE CAPABLE OF PRODUCING UP TO TWO INCHES OF
RAINFALL ACROSS WESTERN AND CENTRAL PIMA COUNTY THROUGH 130 AM MST.
FLOODING OF WASHES AND ROADWAY DIPS...PARTICULARLY ALONG 4STATE
HIGHWAYS 85 AND 86 WILL BE A STRONG POSSIBILITY AS THIS LINE MOVES
THROUGH THE AREA.

OKULSKI

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.