Alert archive / Arizona / Flash Flood Warnings in 2002

Flash Flood Warning 48, NWS Tucson, AZ

September 7, 2002Cochise County, Arizona

NWS Tucson, AZ issued this flash flood warning at Sep 7, 2002, 6:00 PM MST for Cochise 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 as issued.

The facts

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

County Cochise County, AZ

The radar

The Tucson radar (KEMX), 119 km from the middle of the area, began a volume at 01:03 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, 1.0 hours before the alert went out and 157 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 2002-09-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1000 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 2002-09-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 57 square meters per square second.193958Sfc1 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
1000 J/kg
Mixed-layer CIN
-63 J/kg
Mixed-layer LCL
1530 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
57 m²/s²
0-3 km storm-relative helicity
160 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.6

Open this sounding in Storm Lab

The text

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

000 
WGUS55 KTWC 080103
FFWTWC
AZC003-080200-

BULLETIN - EAS ACTIVATION REQUESTED
COMBINED SEVERE THUNDERSTORM AND FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TUCSON AZ
600 PM MST SAT SEP 7 2002

THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A

* COMBINED SEVERE THUNDERSTORM AND FLASH FLOOD WARNING FOR...
  SOUTH CENTRAL COCHISE COUNTY IN ARIZONA
    THIS INCLUDES THE CITY OF DOUGLAS

* SEVERE THUNDERSTORM WARNING UNTIL 700 PM MST
  FLASH FLOOD WARNING UNTIL 700 PM MST

* AT 557 PM MST...WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE
  THUNDERSTORM WITH VERY HEAVY RAIN OVER DOUGLAS...MOVING NORTHEAST
  AT 15 MPH.

THIS STORM WILL NOT ONLY PRODUCE DAMAGING WINDS....BUT ALSO FLASH
FLOODING OF ROADS AND NORMALLY DRY WASHES. MOVE INDOORS AND DO NOT
DRIVE INTO FLOODED AREAS. MOTORISTS SHOULD BE PREPARED FOR NEAR ZERO
VISIBILITIES IN WIND-DRIVEN DOWNPOURS.

LAT...LON 3132 10964 3125 10945 3154 10927 3163 10951

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 7, 7:05 PM MSTFlash Flood WarningTWCPima55 min
Sep 7, 7:07 PM MSTFlash Flood WarningTWCPima113 min
Sep 8, 1:18 PM MSTFlash Flood WarningTWCPima
Sep 8, 1:20 PM MSTFlash Flood WarningTWCPima55 min
Sep 8, 2:15 PM MSTFlash Flood WarningTWCPima60 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.