Alert archive / Arizona / Flash Flood Warnings in 2002

Flash Flood Warning 37, NWS Tucson, AZ

September 6, 2002Pima County, Arizona

NWS Tucson, AZ issued this flash flood warning at Sep 6, 2002, 6:08 PM MST for Pima County, Arizona. It was in force for 52 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Sep 6, 2002, 6:08 PM MST (01:08 UTC)
Expired
Sep 6, 2002, 7:00 PM MST
In force
52 min
Issued by
NWS Tucson, AZ
Area
Counties, with a storm outline in the text

County Pima County, AZ

The radar

The Tucson radar (KEMX), 48 km from the middle of the area, began a volume at 01:09 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, 1.1 hours before the alert went out and 8 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 2002-09-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 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 2002-09-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -35 square meters per square second.1939Sfc1 km3 km6 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
1998 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
-35 m²/s²
0-3 km storm-relative helicity
7 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 070108
FFWTWC
AZC019-070200-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TUCSON AZ
607 PM MST FRI SEP 6 2002

THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHEASTERN PIMA COUNTY IN ARIZONA
    THIS INCLUDES THE CITY OF TUCSON

* UNTIL 700 PM MST

* AT 605 PM MST...WEATHER SERVICE DOPPLER RADAR INDICATED HEAVY  
  RAIN NEAR SAGUARO NATIONAL PARK WEST...OR ABOUT 10 MILES WEST OF 
  TUCSON...MOVING NORTHEAST AT 20 MPH.

* THE THUNDERSTORM WITH HEAVY RAINFALL WILL BE NEAR...           
   NORTHWEST TUCSON AT 620 PM MST
   
ALTHOUGH CENTRAL...SOUTHERN...AND EASTERN PARTS OF THE METRO AREA 
WILL MISS THIS LATEST THUNDERSTORM...TORRENTIAL RAINS FROM EARLIER 
THIS AFTERNOON HAVE CAUSED WIDESPREAD STREET FLOODING. SEVERAL ROADS 
WERE EITHER BARRICADED OR BLOCKED BY HIGH WATER. DO NOT DRIVE INTO 
FLOODED AREAS OF AROUND BARRICADES. IF THE ROAD AHEAD IS BLOCKED... 
TURN AROUND AND TAKE ANOTHER ROUTE.

THIS WARNING EXTENDS THE PREVIOUSLY ISSUED FLASH FLOOD WARNING FOR 
NORTHEAST PIMA COUNTY.

LAT...LON 3206 11120 3206 11052 3251 11052 3251 11119

PYTLAK

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 6, 5:18 PM MSTFlash Flood WarningTWCPima, Santa Cruz102 min
Sep 6, 5:18 PM MSTFlash Flood WarningTWCPima, Santa Cruz42 min
Sep 6, 7:08 PM MSTFlash Flood WarningTWCPima112 min
Sep 6, 7:08 PM MSTFlash Flood WarningTWCPima52 min

Nearby

Flash Flood Warnings in Arizona, 2002Every flash flood warning in 2002

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.