Alert archive / Arizona / Flash Flood Warnings in 2006

Flash Flood Warning 21, NWS Tucson, AZ

July 18, 2006Pima County, Arizona

NWS Tucson, AZ issued this flash flood warning at Jul 18, 2006, 4:44 PM MST for Pima County, Arizona. It was in force for 61 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 18, 2006, 4:44 PM MST (23:44 UTC)
Expired: Jul 18, 2006, 5:45 PM MST
In force: 61 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), 54 km from the middle of the area, began a volume at 23:44 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, 11.7 hours before the alert went out and 19 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1177 J/kg
Mixed-layer CIN: -247 J/kg
Mixed-layer LCL: 1918 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: -39 m²/s²
0-3 km storm-relative helicity: 49 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

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

000 
WGUS55 KTWC 182347
FFWTWC
AZC019-190145-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TUCSON AZ
444 PM MST TUE JUL 18 2006

THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHEASTERN PIMA COUNTY IN SOUTH CENTRAL ARIZONA
  THIS INCLUDES THE CITIES OF...TUCSON...MARANA

* UNTIL 645 PM MST

* AT 440 PM MST...TRAINED WEATHER SPOTTERS REPORTED A FOOT OF WATER  
  OVER EMILY ROAD IN AVRA VALLEY.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO AVRA       
  VALLEY...MARANA...VAIL...AND CORONA DE TUCSON.

ADDITIONAL RAINFALL AMOUNTS UP 1.00 INCH IS POSSIBLE IN THE WARNED 
AREA.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. MOVE TO HIGHER GROUND.

LAT...LON 3207 11156 3184 11058 3226 11056 3237 11090
      3247 11142

$$

SCHAFFNER

WEATHER.GOV/TUCSON

1 follow-up statement

000 
WGUS75 KTWC 190022
FFSTWC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
519 PM MST TUE JUL 18 2006

AZC019-190145-
PIMA AZ-
519 PM MST TUE JUL 18 2006

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 645 PM MST FOR EAST
CENTRAL PIMA COUNTY...

AT 514 PM MST...TRAINED WEATHER SPOTTER REPORTED THREE FEET OF 
WATER AT CRAYCROFT AND 29TH.

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO TUCSON AND 
AVRA VALLEY.

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND UNDERPASSES
AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS.

LAT...LON 3207 11156 3184 11058 3226 11056 3237 11090
      3247 11142

$$

WEATHER.GOV/TUCSON

SCHAFFNER

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 18, 1:50 PM MST	Severe Thunderstorm Warning	TWC	Cochise	27 min
Jul 18, 2:48 PM MST	Severe Thunderstorm Warning	TWC	Pima, Pinal	42 min
Jul 18, 3:01 PM MST	Severe Thunderstorm Warning	TWC	Pima	44 min
Jul 18, 3:39 PM MST	Dust Storm Warning	TWC		2 hr
Jul 18, 3:47 PM MST	Severe Thunderstorm Warning	TWC	Pima	43 min
Jul 18, 4:13 PM MST	Severe Thunderstorm Warning	TWC	Pima	62 min
Jul 18, 4:30 PM MST	Severe Thunderstorm Warning	TWC	Pima, Pinal	45 min
Jul 18, 4:35 PM MST	Severe Thunderstorm Warning	TWC	Santa Cruz	40 min

Nearby

Flash Flood Warnings in Arizona, 2006 Every flash flood warning in 2006

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.