Alert archive / Arizona / Flash Flood Warnings in 2011

Flash Flood Warning 1, NWS Tucson, AZ

June 29, 2011Greenlee County, Arizona

NWS Tucson, AZ issued this flash flood warning at Jun 29, 2011, 4:49 PM MST for Greenlee County, Arizona. It was in force for 86 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
Jun 29, 2011, 4:49 PM MST (23:49 UTC)
Expired
Jun 29, 2011, 6:15 PM MST
In force
86 min
Issued by
NWS Tucson, AZ
Area
Storm-based polygon
Flood severity
None

County Greenlee County, AZ

The radar

The Flagstaff radar (KFSX), 210 km from the middle of the area, began a volume at 23:51 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 218 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 2011-06-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 28 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Tuscon, AZ at 12:00Z on 2011-06-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -4 square meters per square second.1939Sfc1 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
28 J/kg
Mixed-layer CIN
-581 J/kg
Mixed-layer LCL
2777 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
-4 m²/s²
0-3 km storm-relative helicity
136 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.

818 
WGUS55 KTWC 292349
FFWTWC
AZC011-300115-
/O.NEW.KTWC.FF.W.0001.110629T2349Z-110630T0115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TUCSON AZ
449 PM MST WED JUN 29 2011

THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  GREENLEE COUNTY IN SOUTHEAST ARIZONA...

* UNTIL 615 PM MST

* AT 442 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  AREAS OF MODERATE RAINFALL FROM SEVERAL THUNDERSTORMS OVER AND NEAR
  BURN AREAS FROM THE WALLOW FIRE. RAINFALL AMOUNTS UP TO 1/2 INCH
  MAY CAUSE FLASH FLOODING IN AND NEAR BURN AREAS.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO HANNAGAN
  MEADOW AND BLUE

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3377 10904 3287 10904 3308 10948 3367 10950
      3372 10944 3373 10937 3376 10936 3379 10917

$$

MEYER
2 follow-up statements
431 
WGUS75 KTWC 292358
FFSTWC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
458 PM MST WED JUN 29 2011

AZC011-300115-
/O.CON.KTWC.FF.W.0001.000000T0000Z-110630T0115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
GREENLEE AZ-
458 PM MST WED JUN 29 2011

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 615 PM MST FOR
GREENLEE COUNTY...

AT 455 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE AN AREA OF THUNDERSTORMS PRODUCING LOCALLY HEAVY RAINFALL 
FROM CENTRAL TO NORTHERN GREENLEE COUNTY...INCLUDING PORTIONS OF THE 
WALLOW FIRE BURN AREA. RAINFALL AMOUNTS UP TO 1 INCH ARE POSSIBLE IN 
SOME LOCATIONS MAINLY NORTH OF CLIFTON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF CREEKS 
AND STREAMS...ROADS...AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING 
SPOTS.

&&

LAT...LON 3377 10904 3287 10904 3308 10948 3367 10950
      3372 10944 3373 10937 3376 10936 3379 10917

$$

MEYER
783 
WGUS75 KTWC 300113
FFSTWC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
613 PM MST WED JUN 29 2011

AZC011-300121-
/O.EXP.KTWC.FF.W.0001.000000T0000Z-110630T0115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
GREENLEE AZ-
613 PM MST WED JUN 29 2011

...THE FLASH FLOOD WARNING WILL EXPIRE AT 615 PM MST FOR GREENLEE 
COUNTY...

AT 611 PM MST THE SHOWER AND THUNDERSTORM ACTIVITY ACROSS CENTRAL 
AND NORTHERN GREENLEE COUNTY HAD DIMINISHED CONSIDERABLY. WITH THIS 
TREND EXPECTED TO CONTINUE THE FLASH FLOOD WARNING WILL BE ALLOWED 
TO EXPIRE AT 615 PM. SOME RUNOFF FROM EARLIER MODERATE TO LOCALLY 
HEAVY RAINFALL WILL CONTINUE INTO THE EVENING HOURS...WITH LIGHT 
ADDITIONAL RAINFALL POSSIBLE.

LAT...LON 3377 10904 3287 10904 3308 10948 3367 10950
      3372 10944 3373 10937 3376 10936 3379 10917

$$

MEYER

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 29, 3:51 PM MSTSevere Thunderstorm WarningTWCPinal24 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.