Alert archive / Arizona / Flash Flood Warnings in 2007

Flash Flood Warning 48, NWS Tucson, AZ

August 10, 2007Pima County, Arizona

NWS Tucson, AZ issued this flash flood warning at Aug 10, 2007, 6:10 PM MST for Pima County, Arizona. It was in force for 65 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Aug 10, 2007, 6:10 PM MST (01:10 UTC)
Expired: Aug 10, 2007, 7:15 PM MST
In force: 65 min
Issued by: NWS Tucson, AZ
Area: Counties, with a storm outline in the text
Flood severity: None

County Pima County, AZ

The radar

The Tucson radar (KEMX), 55 km from the middle of the area, began a volume at 01:14 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.

What was reported inside it

Time	Report	Where	Remark
Aug 10, 7:08 PM MST	FLASH FLOOD	5 Ne Tucson, AZ	BROADCAST MEDIA REPORTED A SWIFT WATER RESCUE BEING PERFORMED AT RIVER ROAD AND SWAN ROAD.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Tuscon, AZ (KTUS), launched 00:00Z, 1.2 hours before the alert went out and 17 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: 415 J/kg
Mixed-layer CIN: -12 J/kg
Mixed-layer LCL: 2516 m above ground
0-6 km bulk shear: 11 kt
0-1 km storm-relative helicity: -32 m²/s²
0-3 km storm-relative helicity: 56 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 110112
FFWTWC
AZC019-110215-
/X.NEW.KTWC.FF.W.0048.070811T0110Z-070811T0215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TUCSON AZ
610 PM MST FRI AUG 10 2007

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...DOVE MOUNTAIN...ORO VALLEY...

* UNTIL 715 PM MST

* AT 601 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  HEAVY RAIN FROM A THUNDERSTORM OVER THE WARNED AREA. SOME RAIN     
  GAGES IN THE WARNED AREA HAVE ALREADY RECEIVED OVER AN INCH OF    
  RAINFALL IN A SHORT PERIOD OF TIME. NORMALLY DRY WASHES AND LOW    
  WATER CROSSINGS WILL BE FLOODED AND MOTORISTS SHOULD USE EXTREME   
  CAUTION.  

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO SABINO
  CANYON...DOVE MOUNTAIN AND CATALINA STATE PARK.

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 3222 11079 3237 11075 3251 11114 3227 11116

$$

WEATHER.GOV/TUCSON
ELSLAGER

1 follow-up statement

000 
WGUS75 KTWC 110206
FFSTWC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
705 PM MST FRI AUG 10 2007

AZC019-110215-
/X.EXP.KTWC.FF.W.0048.000000T0000Z-070811T0215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
PIMA AZ-
705 PM MST FRI AUG 10 2007

...THE FLASH FLOOD WARNING WILL EXPIRE AT 715 PM MST FOR NORTHEASTERN
PIMA COUNTY...

ALTHOUGH THE HEAVY RAINFALL HAS STOPPED AT THIS TIME FOR THE WARNED 
AREA...RUNOFF MAY STILL CAUSE FLOODED ROADWAYS AND HIGH RUNNING 
WASHES. MOTORISTS SHOULD USE EXTREME CAUTION.

NEVER DRIVE CARS...TRUCKS OR SPORT UTILITY VEHICLES THROUGH FLOODED
AREAS. THE WATER MAY BE TO DEEP TO ALLOW FOR SAFE PASSAGE.

LAT...LON 3222 11079 3237 11075 3251 11114 3227 11116

$$

WEATHER.GOV/TUCSON
ELSLAGER

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 10, 5:01 PM MST	Severe Thunderstorm Warning	TWC	Pima	29 min
Aug 10, 6:16 PM MST	Severe Thunderstorm Warning	TWC	Pima	44 min

Nearby

Flash Flood Warnings in Arizona, 2007 Every flash flood warning in 2007

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.