Alert archive / Arizona / Flash Flood Warnings in 1991

Flash Flood Warning 3, NWS Tucson, AZ

September 2, 1991Pima County, Arizona

NWS Tucson, AZ issued this flash flood warning at Sep 2, 1991, 2:14 PM MST for Pima County, Arizona. It was in force for 2 hr.

The area

The counties it named.

The facts

Issued
Sep 2, 1991, 2:14 PM MST (21:14 UTC)
Expired
Sep 2, 1991, 4:15 PM MST
In force
2 hr
Issued by
NWS Tucson, AZ
Area
Whole counties

County Pima County, AZ

The nearest sounding before it

Tuscon, AZ (KTUS), launched 12:00Z, 9.2 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 12:00Z on 1991-09-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 267 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 1991-09-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 20 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
267 J/kg
Mixed-layer CIN
-181 J/kg
Mixed-layer LCL
1423 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
20 m²/s²
0-3 km storm-relative helicity
-2 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.

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 2, 2:14 PM MSTSevere Thunderstorm WarningTWCPima2 hr

Nearby

Flash Flood Warnings in Arizona, 1991Every flash flood warning in 1991

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.