Alert archive / Arizona / Flash Flood Warnings in 2011

Flash Flood Warning 9, NWS Tucson, AZ

July 9, 2011Cochise County, Arizona

NWS Tucson, AZ issued this flash flood warning at Jul 9, 2011, 1:32 PM MST for Cochise County, Arizona. It was in force for 3 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 9, 2011, 1:32 PM MST (20:32 UTC)
Expired: Jul 9, 2011, 4:30 PM MST
In force: 3 hr
Issued by: NWS Tucson, AZ
Area: Storm-based polygon
Flood severity: None

County Cochise County, AZ

The radar

The Tucson radar (KEMX), 46 km from the middle of the area, began a volume at 20:32 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, 8.5 hours before the alert went out and 86 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: 52 J/kg
Mixed-layer CIN: -269 J/kg
Mixed-layer LCL: 2439 m above ground
0-6 km bulk shear: 3 kt
0-1 km storm-relative helicity: -46 m²/s²
0-3 km storm-relative helicity: 7 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.

135 
WGUS55 KTWC 092032
FFWTWC
AZC003-092330-
/O.NEW.KTWC.FF.W.0009.110709T2032Z-110709T2330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TUCSON AZ
132 PM MST SAT JUL 9 2011

THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHWESTERN COCHISE COUNTY IN SOUTHEAST ARIZONA...

* UNTIL 430 PM MST

* AT 123 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
FLASH FLOODING FROM A THUNDERSTORM OVER THE HUACHUCA MOUNTAINS. 
RADAR REPORTS INDICATE ONE TO TWO INCHES OF RAIN HAS OCCURRED OVER 
THE NORTHERN HALF OF THE HUACHUCA MOUNTAINS...STAYING NORTH OF THE 
MONUMENT FIRE BURN AREA. FLOODING IN HUACHUCA CANYON IS EXPECTED. 

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO FORT
  HUACHUCA

PRECAUTIONARY/PREPAREDNESS ACTIONS...

ADDITIONAL RAINFALL AMOUNTS OF ONE TO TWO INCHES ARE POSSIBLE IN THE 
WARNED AREA OVER THE NEXT HOUR. 

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF WASHES 
AND STREAMS.

&&

LAT...LON 3156 11045 3163 11036 3159 11032 3145 11029
      3141 11045

$$

GL

3 follow-up statements

726 
WGUS75 KTWC 092131
FFSTWC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
231 PM MST SAT JUL 9 2011

AZC003-092330-
/O.CON.KTWC.FF.W.0009.000000T0000Z-110709T2330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
COCHISE AZ-
231 PM MST SAT JUL 9 2011

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 430 PM MST FOR
SOUTHWESTERN COCHISE COUNTY...

AT 225 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE A THUNDERSTORM PRODUCING FLASH FLOODING OVER THE NORTHERN 
HALF OF THE HUACHUCA MOUNTAINS. DOPPLER RADAR RAINFALL ESTIMATES 
ALONG WITH RAINFALL GAUGE DATA INDICATE ONE TO THREE INCHES OF 
RAINFALL HAS OCCURRED OVER THE NORTHERN HALF OF THE HUACHUCA 
MOUNTAINS WITH LOCAL AMOUNTS UP TO FOUR INCHES. THIS HEAVY RAINFALL 
WILL CONTINUE TO RESULT IN FLOODING WITHIN HUACHUCA CANYON. 

THIS FLASH FLOOD WARNING DOES NOT INCLUDE THE LOCATIONS DOWNSTREAM 
FROM THE MONUMENT FIRE BURN AREA. THE BURN AREA IS TO THE SOUTH OF 
THE LOCATION OF HEAVY RAINFALL. 

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO FORT HUACHUCA

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF 
WASHES...SMALL CREEKS AND STREAMS.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY
AUTOMOBILE.

&&

LAT...LON 3156 11045 3163 11036 3159 11032 3145 11029
      3141 11045

$$

GL

888 
WGUS75 KTWC 092239
FFSTWC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
339 PM MST SAT JUL 9 2011

AZC003-092330-
/O.CON.KTWC.FF.W.0009.000000T0000Z-110709T2330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
COCHISE AZ-
339 PM MST SAT JUL 9 2011

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 430 PM MST FOR
SOUTHWESTERN COCHISE COUNTY...

AT 332 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE RAINFALL AMOUNTS OF ONE TO THREE INCHES WITH LOCAL FOUR 
INCH AMOUNTS IN THE NORTHERN HALF OF THE HUACHUCA MOUNTAINS OVER THE 
PAST FEW HOURS. THE HEAVY RAINFALL HAS ENDED FOR THE TIME BEING 
ACROSS THE MOUNTAINS BUT FLASH FLOODING WILL CONTINUE PARTICULARLY 
FOR THE HUACHUCA CANYON AREA AS THE HEAVY RAINFALL FROM THE PAST FEW 
HOURS CONTINUES TO MOVE DOWNSTREAM. 

THIS FLASH FLOOD WARNING DOES NOT INCLUDE THE LOCATIONS DOWNSTREAM 
FROM THE MONUMENT FIRE BURN AREA. THE BURN AREA IS TO THE SOUTH OF 
THE LOCATION OF HEAVY RAINFALL. 

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO FORT HUACHUCA

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY
AUTOMOBILE.

&&

LAT...LON 3156 11045 3163 11036 3159 11032 3145 11029
      3141 11045

$$

GL

278 
WGUS75 KTWC 092323
FFSTWC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
423 PM MST SAT JUL 9 2011

AZC003-092331-
/O.EXP.KTWC.FF.W.0009.000000T0000Z-110709T2330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
COCHISE AZ-
423 PM MST SAT JUL 9 2011

...THE FLASH FLOOD WARNING WILL EXPIRE AT 430 PM MST FOR SOUTHWESTERN
COCHISE COUNTY...

HEAVY RAINFALL HAS BEEN OVER FOR A COUPLE OF HOURS ACROSS THE 
HUACHUCA MOUNTAINS BUT SOME RUNOFF WILL CONTINUE. HOWEVER...THE MAIN 
THREAT FOR FLASH FLOODING SHOULD HAVE PASSED...THUS THE FLASH FLOOD 
WARNING WILL BE ALLOWED TO EXPIRE. 

LAT...LON 3156 11045 3163 11036 3159 11032 3145 11029
      3141 11045

$$

GL

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 9, 6:08 AM MST	Areal Flood Advisory	TWC	Cochise	112 min
Jul 9, 2:40 PM MST	Areal Flood Advisory	TWC	Pima, Santa Cruz	110 min
Jul 9, 2:45 PM MST	Severe Thunderstorm Warning	TWC	Pima	45 min
Jul 9, 2:58 PM MST	Severe Thunderstorm Warning	TWC	Cochise	47 min
Jul 9, 3:16 PM MST	Areal Flood Advisory	TWC	Pima	89 min
Jul 9, 4:23 PM MST	Flash Flood Warning	TWC	Pima, Pinal	112 min

Nearby

Flash Flood Warnings in Arizona, 2011 Every 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.