Alert archive / Arizona / Flash Flood Warnings in 2007

Flash Flood Warning 13, NWS Tucson, AZ

July 24, 2007Cochise County, Pima County, Arizona

NWS Tucson, AZ issued this flash flood warning at Jul 24, 2007, 5:27 PM MST for Cochise County, Pima 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 24, 2007, 5:27 PM MST (00:27 UTC)
Expired: Jul 24, 2007, 7:30 PM MST
In force: 2 hr
Issued by: NWS Tucson, AZ
Area: Counties, with a storm outline in the text
Flood severity: None

Counties Cochise County, AZ, Pima County, AZ

The radar

The Tucson radar (KEMX), 27 km from the middle of the area, began a volume at 00:28 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 00:00Z, 0.5 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: 723 J/kg
Mixed-layer CIN: -65 J/kg
Mixed-layer LCL: 1770 m above ground
0-6 km bulk shear: 12 kt
0-1 km storm-relative helicity: -68 m²/s²
0-3 km storm-relative helicity: 13 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 250032
FFWTWC
AZC003-019-250230-
/X.NEW.KTWC.FF.W.0013.070725T0027Z-070725T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TUCSON AZ
527 PM MST TUE JUL 24 2007

THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A

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

* UNTIL 730 PM MST

* AT 524 PM MST...RADAR ESTIMATES AND SPOTTERS REPORTS INDICATE FROM 
  1.00 TO 2.00 INCHES OF RAINFALL HAS OCCURRED OVER THE EAST AND     
  SOUTHEAST PORTION OF THE TUCSON METRO AREA...WHICH WILL CAUSE MANY 
  LOW WATER CROSSINGS OVER THE THE SOUTHEAST AND EAST PORTION OF THE 
  CITY TO BE IMPASSIBLE. THE RODEO AND ALAMO WASHES WILL HAVE        
  SIGNIFICANT FLOW DURING THE NEXT HOUR. 

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO SOUTH
  TUCSON AND CATALINA FOOTHILLS.

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.

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.

DO NOT UNDERESTIMATE THE POWER OF FLOOD WATERS. ONLY A FEW INCHES OF
RAPIDLY FLOWING WATER CAN QUICKLY CARRY AWAY YOUR VEHICLE.

THIS WARNING REPLACES THE PREVIOUSLY ISSUED FLASH FLOOD WARNING FOR
THIS AREA.

LAT...LON 3211 11099 3197 11094 3199 11019 3226 11013
      3231 11099

$$

WEATHER.GOV/TUCSON
SHOEMAKER

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 24, 5:35 PM MST	Severe Thunderstorm Warning	TWC	Pima	55 min
Jul 24, 6:25 PM MST	Severe Thunderstorm Warning	TWC	Pima, Pinal	65 min
Jul 24, 7:34 PM MST	Flash Flood Warning	TWC	Pima, Pinal	116 min
Jul 24, 8:38 PM MST	Flash Flood Warning	TWC	Cochise, Graham	2 hr
Jul 25, 10:25 AM MST	Areal Flood Advisory	TWC	Pima, Santa Cruz	2 hr
Jul 25, 1:07 PM MST	Areal Flood Advisory	TWC	Pima	113 min
Jul 25, 3:24 PM MST	Areal Flood Advisory	TWC	Pima, Pinal	5 hr

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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.