Alert archive / Arizona / Flash Flood Warnings in 2011

Flash Flood Warning 33, NWS Tucson, AZ

August 3, 2011Cochise County, Arizona

NWS Tucson, AZ issued this flash flood warning at Aug 3, 2011, 11:49 AM MST for Cochise County, Arizona. It was in force for 116 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: Aug 3, 2011, 11:49 AM MST (18:49 UTC)
Expired: Aug 3, 2011, 1:45 PM MST
In force: 116 min
Issued by: NWS Tucson, AZ
Area: Storm-based polygon
Flood severity: None

County Cochise County, AZ

The radar

The Tucson radar (KEMX), 137 km from the middle of the area, began a volume at 18:48 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, 6.8 hours before the alert went out and 165 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: 27 J/kg
Mixed-layer CIN: -261 J/kg
Mixed-layer LCL: 2181 m above ground
0-6 km bulk shear: 7 kt
0-1 km storm-relative helicity: 121 m²/s²
0-3 km storm-relative helicity: 155 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.

393 
WGUS55 KTWC 031849
FFWTWC
AZC003-032045-
/O.NEW.KTWC.FF.W.0033.110803T1849Z-110803T2045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TUCSON AZ
1149 AM MST WED AUG 3 2011

THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  EAST CENTRAL COCHISE COUNTY IN SOUTHEAST ARIZONA...

* UNTIL 145 PM MST

* AT 1145 AM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  HEAVY RAIN FROM A STRONG THUNDERSTORM JUST WEST OF PORTAL OVER
  CAVE CREEK BASIN WITH LITTLE MOVEMENT. THIS INCLUDES EASTERN
  AREAS OF THE HORSESHOE2 BURN AREA.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  PARADISE

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS INCLUDES THE FOLLOWING STREAMS AND DRAINAGES...
PINERY CREEK...PINE CREEK...ROCK CREEK...EAST WHITETAIL
CREEK...INDIAN CREEK...ONION CREEK...EAST TURKEY CREEK...
CAVE CREEK...WHITEWATER DRAW...KEATING CREEK...SOUTH FORK KEATING
CREEK...SILVER CREEK AND WITCH CREEK.

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

&&

LAT...LON 3177 10922 3190 10938 3208 10928 3198 10904
      3196 10904 3187 10904

$$

MEYER

1 follow-up statement

303 
WGUS75 KTWC 031932
FFSTWC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
1232 PM MST WED AUG 3 2011

AZC003-032045-
/O.CON.KTWC.FF.W.0033.000000T0000Z-110803T2045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
COCHISE AZ-
1232 PM MST WED AUG 3 2011

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 145 PM MST FOR EAST 
CENTRAL COCHISE COUNTY...

AT 1230 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE A STRONG THUNDERSTORM PRODUCING HEAVY RAINFALL JUST WEST OF 
PORTAL OVER THE CAVE CREEK...EAST TURKEY CREEK...AND SILVER CREEK 
BASINS.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO 
PARADISE

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS INCLUDES THE FOLLOWING STREAMS AND DRAINAGES...PINERY 
CREEK...PINE CREEK...ROCK CREEK...EAST WHITETAIL CREEK...INDIAN 
CREEK...ONION CREEK...EAST TURKEY CREEK...CAVE CREEK...WHITEWATER 
DRAW...KEATING CREEK...SOUTH FORK KEATING CREEK...SILVER CREEK AND 
WITCH CREEK.

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

&&

LAT...LON 3177 10922 3190 10938 3208 10928 3198 10904
      3196 10904 3187 10904

$$

MEYER

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 2, 6:34 PM MST	Severe Thunderstorm Warning	TWC	Pima	26 min
Aug 2, 7:00 PM MST	Severe Thunderstorm Warning	TWC	Cochise	14 min
Aug 2, 7:07 PM MST	Areal Flood Advisory	TWC	Pima	3 hr
Aug 2, 9:19 PM MST	Areal Flood Advisory	TWC	Pima, Santa Cruz	3 hr
Aug 2, 10:46 PM MST	Areal Flood Advisory	TWC	Pima	3 hr
Aug 2, 10:56 PM MST	Areal Flood Advisory	TWC	Pima	2 hr
Aug 3, 10:34 AM MST	Areal Flood Advisory	TWC	Greenlee	116 min
Aug 3, 12:29 PM MST	Areal Flood Advisory	TWC	Greenlee	2 hr
Aug 3, 1:49 PM MST	Areal Flood Advisory	TWC	Cochise	3 hr
Aug 3, 2:30 PM MST	Areal Flood Advisory	TWC	Graham, Greenlee	101 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.