Alert archive / Arizona / Flash Flood Warnings in 2000

Flash Flood Warning 4, NWS Tucson, AZ

July 29, 2000Pima County, Arizona

NWS Tucson, AZ issued this flash flood warning at Jul 29, 2000, 6:38 PM MST for Pima County, Arizona. It was in force for 82 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued
Jul 29, 2000, 6:38 PM MST (01:38 UTC)
Expired
Jul 29, 2000, 8:00 PM MST
In force
82 min
Issued by
NWS Tucson, AZ
Area
Whole counties; the outline is the Mesonet’s reconstruction

County Pima County, AZ

The nearest sounding before it

Tuscon, AZ (KTUS), launched 00:00Z, 1.6 hours before the alert went out and 36 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 2000-07-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 308 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 2000-07-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -26 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
308 J/kg
Mixed-layer CIN
-70 J/kg
Mixed-layer LCL
3352 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
-26 m²/s²
0-3 km storm-relative helicity
42 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.8

Open this sounding in Storm Lab

The text

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

000 
WGUS55 KTWC 300139
FFWTWC
AZC019-300400-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TUCSON AZ
638 PM MST SAT JUL 29 2000

THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  EXTREME NORTHEASTERN PIMA COUNTY IN ARIZONA

* UNTIL 900 PM MST

* AT 635 PM MST...RAIN GAGES AND WEATHER SERVICE DOPPLER RADAR
  INDICATED VERY HEAVY RAIN OVER EXTREME NORTHEASTERN PIMA COUNTY
  ABOUT 3 MILES EAST OF SUMMERHAVEN. MOVEMENT WAS TO THE SOUTHWEST
  AT ABOUT 5 MPH.

EXPECT 1.5 TO 3 INCHES OF TOTAL RAINFALL TO LEAD TO FLASH FLOODING
ACROSS THE SANTA CATALINAS...GENERALLY EAST AND SOUTH OF
SUMMERHAVEN...WITH SABINO CANYON PARTICULARLY THREATENED.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY
AUTOMOBILE.


LAT...LON 3237 11076 3237 11056 3252 11056 3252 11076

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 29, 5:44 PM MSTSevere Thunderstorm WarningTWCPima31 min

Nearby

Flash Flood Warnings in Arizona, 2000Every flash flood warning in 2000

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.