Alert archive / Arizona / Flash Flood Warnings in 2002

Flash Flood Warning 28, NWS Tucson, AZ

August 16, 2002Pima County, Arizona

NWS Tucson, AZ issued this flash flood warning at Aug 16, 2002, 2:24 PM MST for Pima County, Arizona. It was in force for 66 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
Aug 16, 2002, 2:24 PM MST (21:24 UTC)
Expired
Aug 16, 2002, 3:30 PM MST
In force
66 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), 57 km from the middle of the area, began a volume at 21:28 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, 9.4 hours before the alert went out and 18 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 2002-08-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1872 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 2002-08-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 18 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
1872 J/kg
Mixed-layer CIN
-127 J/kg
Mixed-layer LCL
1868 m above ground
0-6 km bulk shear
7 kt
0-1 km storm-relative helicity
18 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 162124
FFWTWC
AZC019-162230-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TUCSON AZ
224 PM MST FRI AUG 16 2002

THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A

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

* UNTIL 330 PM MST

* AT 218 PM MST...WEATHER SERVICE DOPPLER RADAR INDICATED VERY 
HEAVY   RAIN OVER TUCSON...OR ABOUT 4 MILES NORTHWEST OF TUCSON. 

MOST FLASH FLOOD DEATHS OCCUR IN VEHICLES. DO NOT ATTEMPT TO CROSS
FLOWING WATER...EVEN A SMALL ONE...ON FOOT. DO NOT ALLOW CHILDREN TO
PLAY NEAR DICTHES OR STORM DRAINS.

LAT...LON 3217 11119 3216 11093 3232 11088 3238 11117

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 16, 12:54 PM MSTSevere Thunderstorm WarningTWCCochise51 min
Aug 16, 2:02 PM MSTSevere Thunderstorm WarningTWCCochise28 min
Aug 16, 2:11 PM MSTSevere Thunderstorm WarningTWCPima49 min
Aug 16, 2:24 PM MSTFlash Flood WarningTWCPima6 min
Aug 16, 3:47 PM MSTSevere Thunderstorm WarningTWCPima43 min
Aug 16, 4:30 PM MSTSevere Thunderstorm WarningTWCPima30 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.