Alert archive / Arizona / Flash Flood Warnings in 2000

Flash Flood Warning 20, NWS Tucson, AZ

August 17, 2000Pima County, Pinal County, Arizona

NWS Tucson, AZ issued this flash flood warning at Aug 17, 2000, 7:20 PM MST for Pima County, Pinal County, Arizona. It was in force for . 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
Aug 17, 2000, 7:20 PM MST (02:20 UTC)
Expired
Aug 17, 2000, 7:15 PM MST
In force
Issued by
NWS Tucson, AZ
Area
Whole counties; the outline is the Mesonet’s reconstruction

Counties Pima County, AZ, Pinal County, AZ

The nearest sounding before it

Tuscon, AZ (KTUS), launched 00:00Z, 2.3 hours before the alert went out and 59 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 2000-08-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 188 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Tuscon, AZ at 00:00Z on 2000-08-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -11 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
188 J/kg
Mixed-layer CIN
-41 J/kg
Mixed-layer LCL
2592 m above ground
0-6 km bulk shear
8 kt
0-1 km storm-relative helicity
-11 m²/s²
0-3 km storm-relative helicity
22 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 
WGUS55 KTWC 180226 COR
FFWTUS
AZC019-021-180315-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TUCSON AZ
720 PM MST THU AUG 17 2000

THE NATIONAL WEATHER SERVICE IN TUCSON HAS EXTENDED THE FLASH FLOOD 
WARNING INTO NORTH TUCSON.

* FLASH FLOOD WARNING FOR...
  NORTH CENTRAL PIMA COUNTY IN ARIZONA
    INCLUDING NORTH TUCSON AND MARANA
  SOUTH CENTRAL PINAL COUNTY IN ARIZONA

* UNTIL 815 PM MST

* AT 715 PM MST...WEATHER SERVICE DOPPLER RADAR INDICATED HEAVY RAIN
  MOVING INTO THE NORTH PORTION OF TUCSON NORTH OF GRANT ROAD AND
  WEST OF CAMPBELL ROAD. HEAVY RAIN WAS ALSO FALLING ALONG I-10
  NORTHWEST TO PICACHO PEAK IN PINAL COUNTY.

* THE THUNDERSTORMS WITH EXCESSIVE RAINFALL ARE MOVING TO THE
  SOUTHWEST.

MARANA POLICE REPORT AVRA VALLEY ROAD FLOODED IN SPOTS. OTHER ROADS 
WILL BE IMPASSALBE DUE TO THE RAIN THAT HAS ACCUMULATED BETWEEN 1 
AND 2 INCHES. RADAR INDICATES HEAVY RAIN HAS MOVED INTO THE 
NORTHWEST PORTION OF TUCSON AS WELL. THIS RAIN WILL MOVE SOUTHWEST 
INTO THE TUCSON MOUNTAINS AND AREAS WEST THROUGH 8PM.

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. IF YOUR VEHICLE STALLS, ABANDON IT IMMEDIATELY AND SEEK
HIGHER GROUND.

TO REPORT SEVERE WEATHER HAVE THE NEAREST LAW ENFORCEMENT AGENCY
RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN
TUCSON.

LAT...LON 3266 11157 3230 11132 3233 11101 3285 11118

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 17, 5:00 PM MSTSevere Thunderstorm WarningTWCPima45 min
Aug 17, 5:04 PM MSTFlash Flood WarningTWCPima26 min
Aug 17, 7:00 PM MSTFlash Flood WarningTWCPima, Pinal
Aug 17, 7:45 PM MSTFlash Flood WarningTWCCochise30 min
Aug 17, 8:10 PM MSTFlash Flood WarningTWCPima

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.