Alert archive / Arizona / Flash Flood Warnings in 2011

Flash Flood Warning 5, NWS Tucson, AZ

July 5, 2011Cochise County, Pima County, Arizona

NWS Tucson, AZ issued this flash flood warning at Jul 5, 2011, 4:46 PM MST for Cochise County, Pima County, Arizona. It was in force for 119 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 5, 2011, 4:46 PM MST (23:46 UTC)
Expired
Jul 5, 2011, 6:45 PM MST
In force
119 min
Issued by
NWS Tucson, AZ
Area
Storm-based polygon
Flood severity
None

Counties Cochise County, AZ, Pima County, AZ

The radar

The Tucson radar (KEMX), 24 km from the middle of the area, began a volume at 23:47 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, 11.8 hours before the alert went out and 22 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 2011-07-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 263 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Tuscon, AZ at 12:00Z on 2011-07-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -1 square meters per square second.193958Sfc1 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
263 J/kg
Mixed-layer CIN
-123 J/kg
Mixed-layer LCL
1482 m above ground
0-6 km bulk shear
12 kt
0-1 km storm-relative helicity
-1 m²/s²
0-3 km storm-relative helicity
-3 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.

882 
WGUS55 KTWC 052346
FFWTWC
AZC003-019-060145-
/O.NEW.KTWC.FF.W.0005.110705T2346Z-110706T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TUCSON AZ
446 PM MST TUE JUL 5 2011

THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  EASTERN PIMA COUNTY IN SOUTH CENTRAL ARIZONA...
  THIS INCLUDES THE CITIES OF...TUCSON...GREEN VALLEY...
  WEST CENTRAL COCHISE COUNTY IN SOUTHEAST ARIZONA...

* UNTIL 645 PM MST

* AT 436 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
FLASH FLOODING FROM A THUNDERSTORM OVER THE WARNED AREA. RAINFALL 
BETWEEN 1 TO 2 INCHES WILL OCCUR OVER THE TUCSON METRO AREA DURING 
THE NEXT 2 HOURS. RAINFALL ESTIMATES OF OVER 1.00 INCHES HAS FALLEN 
FROM BENSON TO MESCAL THROUGH THE RINCON MOUNTAINS.  

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO TUCSON
  INTERNATIONAL AIRPORT...SOUTH TUCSON...SEVEN FALLS...SAN XAVIER
  MISSION...SAGUARO NATIONAL PARK EAST...SABINO CANYON...RITA
  RANCH...DAVIS-MONTHAN AIR FORCE BASE...CATALINA FOOTHILLS AND
  CASCABEL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

LAT...LON 3239 11111 3240 11047 3217 11026 3181 11025
      3181 11047 3180 11108

$$

SHOEMAKER
2 follow-up statements
336 
WGUS75 KTWC 060110
FFSTWC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
610 PM MST TUE JUL 5 2011

AZC003-019-060145-
/O.CON.KTWC.FF.W.0005.000000T0000Z-110706T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
COCHISE AZ-PIMA AZ-
610 PM MST TUE JUL 5 2011

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 645 PM MST FOR
EASTERN PIMA AND WEST CENTRAL COCHISE COUNTIES...

AT 554 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE FLASH FLOODING OVER THE WARNED AREA. RUNOFF FROM EARLIER 
HEAVY RAINFALL WILL KEEP WASHES FLOWING. THE HEAVIEST RAINFALL 
OCCURED FROM RITA RANCH TO TUCSON INTERNATIONAL AIRPORT TO SAN 
XAVIER MISSION...WHERE FROM 1 TO 2 INCHES HAS FALLEN. ADDITIONAL 
HEAVY RAINFALL FROM 1 TO 2 INCHES HAS OCCURED OVER THE UPPER TANQUE 
VERDE AND SABINO CREEK BASINS. WASHES IN THESE AREAS WILL HAVE 
SIGNIFICANT FLOW. THE PANTANO WASH NEAR VAIL CURRENTLY HAS A FLOW OF 
8 FEET AND THIS FLOW WILL CONTINUE DOWN STREAM.

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO TUCSON

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 3239 11111 3240 11047 3217 11026 3181 11025
      3181 11047 3180 11108

$$

SHOEMAKER
197 
WGUS75 KTWC 060145
FFSTWC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
645 PM MST TUE JUL 5 2011

AZC003-019-060155-
/O.EXP.KTWC.FF.W.0005.000000T0000Z-110706T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
COCHISE AZ-PIMA AZ-
645 PM MST TUE JUL 5 2011

...THE FLASH FLOOD WARNING HAS EXPIRED FOR EASTERN PIMA AND WEST
CENTRAL COCHISE COUNTIES...

THE FLASH FLOOD WARNING FOR EASTERN PIMA COUNTY HAS BEEN REPLACED BY 
A FLOOD ADVISORY.

LAT...LON 3239 11111 3240 11047 3217 11026 3181 11025
      3181 11047 3180 11108

$$

SHOEMAKER

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 4, 6:29 PM MSTSevere Thunderstorm WarningTWCGraham31 min
Jul 4, 7:08 PM MSTAreal Flood AdvisoryTWCPinal112 min
Jul 4, 7:58 PM MSTSpecial Weather StatementTWCPinal62 min
Jul 5, 12:34 PM MSTSpecial Weather StatementTWCSanta Cruz41 min
Jul 5, 12:52 PM MSTSevere Thunderstorm WarningTWCSanta Cruz38 min
Jul 5, 1:15 PM MSTAreal Flood AdvisoryTWCSanta Cruz2 hr
Jul 5, 1:23 PM MSTSpecial Weather StatementTWC37 min
Jul 5, 1:54 PM MSTSpecial Weather StatementTWCSanta Cruz36 min
Jul 5, 2:22 PM MSTSevere Thunderstorm WarningTWCPima, Santa Cruz53 min
Jul 5, 2:41 PM MSTFlash Flood WarningTWCPima, Santa Cruz94 min
Jul 5, 2:41 PM MSTSevere Thunderstorm WarningTWCPima, Pinal49 min
Jul 5, 2:59 PM MSTSpecial Weather StatementTWCGraham46 min
Jul 5, 3:37 PM MSTSevere Thunderstorm WarningTWCPima53 min
Jul 5, 4:03 PM MSTSevere Thunderstorm WarningTWCCochise, Pima42 min
Jul 5, 4:36 PM MSTSevere Thunderstorm WarningTWCPima54 min

Nearby

Flash Flood Warnings in Arizona, 2011Every flash flood warning in 2011

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.