Alert archive / Arizona / Flash Flood Warnings in 2002

Flash Flood Warning 1, NWS Tucson, AZ

July 14, 2002Pima County, Pinal County, Arizona

NWS Tucson, AZ issued this flash flood warning at Jul 14, 2002, 7:57 PM MST for Pima County, Pinal County, Arizona. It was in force for 2 hr. 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 14, 2002, 7:57 PM MST (02:57 UTC)
Expired
Jul 14, 2002, 10:00 PM MST
In force
2 hr
Issued by
NWS Tucson, AZ
Area
Counties, with a storm outline in the text

Counties Pima County, AZ, Pinal County, AZ

The radar

The Phoenix radar (KIWA), 90 km from the middle of the area, began a volume at 02:58 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

Phoenix, AZ (KPSR), launched 00:00Z, 3.0 hours before the alert went out and 102 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, Phoenix, AZ at 00:00Z on 2002-07-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 210 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Phoenix, AZ at 00:00Z on 2002-07-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -15 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
210 J/kg
Mixed-layer CIN
-245 J/kg
Mixed-layer LCL
3046 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
-15 m²/s²
0-3 km storm-relative helicity
51 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 150257
FFWTWC
AZC019-021-150500-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TUCSON AZ
756 PM MST SUN JUL 14 2002

THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  EXTREME NORTH CENTRAL PIMA COUNTY IN ARIZONA
  EXTREME SOUTHWEST PINAL COUNTY IN ARIZONA
   INCLUDING THE FAR NORTHERN SECTION OF THE TOHONO OODHAM NATION

* UNTIL 1000 PM MST

* AT 755 PM MST...WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY 
  RAIN NEAR GU KOMELIK...OR ABOUT 30 MILES SOUTH OF CASA GRANDE...   
  MOVING NORTHWEST AT 5 MPH.

RADAR ESTIMATES THAT UP TO 4 INCHES OF RAIN IS LIKELY IN THE WARNING 
AREA THROUGH 10 PM....WITH MOST OF THE RAIN RUNNING OFF INTO SANTA 
ROSA WASH. FLASH FLOODING IS PARTICULARLY DANGEROUS AT NIGHT BECAUSE 
IT IS VERY HARD TO SEE RISING WATER. IF WATER COVERS THE ROAD...TURN 
AROUND AND TAKE ANOTHER ROUTE.

LAT...LON 3232 11193 3245 11169 3280 11197 3267 11224

PYTLAK

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 14, 5:02 PM MSTSevere Thunderstorm WarningTWCGraham28 min
Jul 14, 5:46 PM MSTSevere Thunderstorm WarningTWCPima29 min
Jul 14, 7:56 PM MSTFlash Flood WarningTWCPima, Pinal64 min
Jul 15, 2:34 PM MSTSevere Thunderstorm WarningTWCSanta Cruz41 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.