Alert archive / Arizona / Flash Flood Warnings in 2011

Flash Flood Warning 11, NWS Tucson, AZ

July 9, 2011Pima County, Pinal County, Arizona

NWS Tucson, AZ issued this flash flood warning at Jul 9, 2011, 5:23 PM MST for Pima County, Pinal County, Arizona. It was in force for 112 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 9, 2011, 5:23 PM MST (00:23 UTC)
Expired: Jul 9, 2011, 7:15 PM MST
In force: 112 min
Issued by: NWS Tucson, AZ
Area: Storm-based polygon
Flood severity: None

Counties Pima County, AZ, Pinal County, AZ

The radar

The Tucson radar (KEMX), 66 km from the middle of the area, began a volume at 00:23 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, 0.4 hours before the alert went out and 35 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: 188 J/kg
Mixed-layer CIN: -305 J/kg
Mixed-layer LCL: 3009 m above ground
0-6 km bulk shear: 10 kt
0-1 km storm-relative helicity: 21 m²/s²
0-3 km storm-relative helicity: 24 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.

979 
WGUS55 KTWC 100023
FFWTWC
AZC019-021-100215-
/O.NEW.KTWC.FF.W.0011.110710T0023Z-110710T0215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

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

THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHEASTERN PIMA COUNTY IN SOUTH CENTRAL ARIZONA...
  THIS INCLUDES THE CITY OF ORO VALLEY...
  SOUTHEASTERN PINAL COUNTY IN SOUTH CENTRAL ARIZONA...

* UNTIL 715 PM MST

* AT 515 PM MST...HEAVY RAIN CONTINUED IN A WIDE AREA FROM NEAR
  ORO VALLEY NORTHWARD AS WELL AS NORTH OF SUMMERHAVEN. ADDITIONAL
  HEAVY RAIN WILL ADD TO EARLIER AMOUNTS FEEDING INTO THE CANADA
  DEL ORO WASH...AS WELL AS EARLIER HEAVY RAIN IN THE CATALINAS
  PARTIALLY DRAINING INTO SABINO CANYON. THIS INCLUDES 2.05 INCHES
  AT SUMMERHAVEN...2.44 INCHES NEAR THE HEAD OF THE CANADA DEL
  ORO...AND A REPORT OF 1.10 INCHES IN ORO VALLEY. THIS WARNING
  SUPERSEDES AND EXPANDS THE PREVIOUS WARNING FOR THIS AREA.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  SADDLEBROOKE...ORACLE JUNCTION...CAMPO BONITO...BIOSPHERE 2 AND
  CATALINA WITH A SPECIAL EMPHASIS ON AREAS AROUND THE CANADA DEL
  ORO WASH.

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.

&&

LAT...LON 3260 11067 3248 11050 3230 11076 3231 11090
      3240 11105 3259 11103

$$

MEYER

2 follow-up statements

751 
WGUS75 KTWC 100119
FFSTWC

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

AZC019-021-100215-
/O.CON.KTWC.FF.W.0011.000000T0000Z-110710T0215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
PIMA AZ-PINAL AZ-
619 PM MST SAT JUL 9 2011

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 715 PM MST FOR
SOUTHEASTERN PINAL AND NORTHEASTERN PIMA COUNTIES...

AT 615 PM MST...SHOWERS AND THUNDERSTORMS WERE WEAKENING ACROSS THE 
WARNING AREA AN MOVING OFF TO THE NORTH. EARLIER HEAVY RAIN AMOUNTS 
WILL CONTINUE TO FEED INTO THE CANADA DEL ORO WASH...AS WELL AS 
EARLIER HEAVY RAIN IN THE CATALINAS PARTIALLY DRAINING INTO SABINO 
CANYON. THIS INCLUDES 2.17 INCHES AT SUMMERHAVEN...2.44 INCHES NEAR 
THE HEAD OF THE CANADA DEL ORO...1.69 INCHES NEAR THE CHAROULEAU 
GAP...1.54 INCHES AT ORACLE RIDGE...AND A REPORT OF 1.10 INCHES IN 
ORO VALLEY.

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO   
SADDLEBROOKE...ORACLE JUNCTION...CAMPO BONITO...BIOSPHERE 
2...CATALINA...AND SABINO CANYON WITH A SPECIAL EMPHASIS ON AREAS 
AROUND THE CANADA DEL ORO WASH.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 3260 11067 3248 11050 3230 11076 3231 11090
      3240 11105 3259 11103

$$

MEYER

279 
WGUS75 KTWC 100223
FFSTWC

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

AZC019-021-100232-
/O.EXP.KTWC.FF.W.0011.000000T0000Z-110710T0215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
PIMA AZ-PINAL AZ-
723 PM MST SAT JUL 9 2011

...THE FLASH FLOOD WARNING HAS EXPIRED FOR SOUTHEASTERN PINAL AND
NORTHEASTERN PIMA COUNTIES...

AT 715 PM MST SHOWERS AND THUNDERSTORMS HAD GENERALLY ENDED ACROSS 
MOST OF NORTHEASTERN PIMA AND FAR SOUTHEASTERN PINAL COUNTIES. VERY 
HEAVY FLOW WILL CONTINUE OVERNIGHT IN THE CANADA DEL ORO.

LAT...LON 3260 11067 3248 11050 3230 11076 3231 11090
      3240 11105 3259 11103

$$

MEYER

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 9, 5:00 PM MST	Areal Flood Advisory	TWC	Pima, Pinal	2 hr
Jul 9, 6:10 PM MST	Areal Flood Advisory	TWC	Cochise	110 min
Jul 9, 7:15 PM MST	Flash Flood Warning	TWC	Pima	2 hr
Jul 9, 7:21 PM MST	Severe Thunderstorm Warning	TWC	Pima	54 min
Jul 9, 7:30 PM MST	Areal Flood Advisory	TWC	Pima	3 hr
Jul 10, 12:08 AM MST	Areal Flood Advisory	TWC	Pima	3 hr
Jul 10, 12:37 PM MST	Special Weather Statement	TWC		38 min
Jul 10, 1:11 PM MST	Areal Flood Advisory	TWC	Pima, Santa Cruz	5 hr
Jul 10, 2:03 PM MST	Flash Flood Warning	TWC	Cochise	117 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.