Alert archive / Arizona / Flash Flood Warnings in 2002

Flash Flood Warning 7, NWS Tucson, AZ

July 26, 2002Santa Cruz County, Arizona

NWS Tucson, AZ issued this flash flood warning at Jul 26, 2002, 3:32 PM MST for Santa Cruz County, Arizona. It was in force for 88 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
Jul 26, 2002, 3:32 PM MST (22:32 UTC)
Expired
Jul 26, 2002, 5:00 PM MST
In force
88 min
Issued by
NWS Tucson, AZ
Area
Counties, with a storm outline in the text

County Santa Cruz County, AZ

The radar

The Tucson radar (KEMX), 72 km from the middle of the area, began a volume at 22:34 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 12:00Z, 10.5 hours before the alert went out and 95 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 2002-07-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1712 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 2002-07-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 13 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
1712 J/kg
Mixed-layer CIN
-78 J/kg
Mixed-layer LCL
1566 m above ground
0-6 km bulk shear
12 kt
0-1 km storm-relative helicity
13 m²/s²
0-3 km storm-relative helicity
-25 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 262232
FFWTWC
AZC023-270000-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TUCSON AZ
332 PM MST FRI JUL 26 2002

THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTH CENTRAL SANTA CRUZ COUNTY IN ARIZONA
    THIS INCLUDES THE CITY OF NOGALES

* UNTIL 500 PM MST

* AT 325 PM MST...SEVERE WEATHER SPOTTERS REPORTED A FLASH FLOOD IN  
  NOGALES WASH IN NOGALES SONORA AND WILL FLOW NORTH INTO THE CITY   
  OF NOGALES. ADDITIONAL WASHES IN NOGALES WILL CONTINUE TO          
  EXPERIENCE RAPID RISES.

LAT...LON 3124 11114 3127 11084 3140 11076 3143 11103

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 25, 5:00 PM MSTSevere Thunderstorm WarningTWCCochise30 min
Jul 26, 2:23 PM MSTFlash Flood WarningTWCCochise22 min
Jul 26, 2:24 PM MSTFlash Flood WarningTWCCochise81 min
Jul 26, 3:14 PM MSTFlash Flood WarningTWCPima61 min
Jul 26, 3:14 PM MSTFlash Flood WarningTWCPima2 hr
Jul 26, 3:32 PM MSTFlash Flood WarningTWCSanta Cruz28 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.