Alert archive / Arizona / Flash Flood Warnings in 2011

Flash Flood Warning 26, NWS Tucson, AZ

July 26, 2011Cochise County, Arizona

NWS Tucson, AZ issued this flash flood warning at Jul 26, 2011, 10:20 AM MST for Cochise County, Arizona. It was in force for 115 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 26, 2011, 10:20 AM MST (17:20 UTC)
Expired: Jul 26, 2011, 12:15 PM MST
In force: 115 min
Issued by: NWS Tucson, AZ
Area: Storm-based polygon
Flood severity: None

County Cochise County, AZ

The radar

The Tucson radar (KEMX), 136 km from the middle of the area, began a volume at 17:19 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, 5.3 hours before the alert went out and 162 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1952 m above ground
0-6 km bulk shear: 3 kt
0-1 km storm-relative helicity: -7 m²/s²
0-3 km storm-relative helicity: 36 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.

294 
WGUS55 KTWC 261720
FFWTWC
AZC003-261915-
/O.NEW.KTWC.FF.W.0026.110726T1720Z-110726T1915Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TUCSON AZ
1020 AM MST TUE JUL 26 2011

THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A

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

* UNTIL 1215 PM MST

* AT 1009 AM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED  
THUNDERSTORMS WITH HEAVY RAINFALL OVER THE HORSESHOE 2 BURN AREA 
NEAR PARADISE AND PORTAL. AUTOMATED GAUGE REPORTS INDICATE THAT UP 
TO 1.00 INCHES OF RAIN HAS OCCURED IN THE BASINS THAT FEED INTO 
STREAMS RUNNING THROUGH PARADISE AND PORTAL. THIS WILL CAUSE FLASH 
FLOODING AND DEBRIS FLOWS FOR THESE LOCATIONS.

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

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.

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

&&

LAT...LON 3206 10931 3206 10906 3187 10906 3185 10923

$$

SHOEMAKER

1 follow-up statement

372 
WGUS75 KTWC 261834
FFSTWC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
1134 AM MST TUE JUL 26 2011

AZC003-261915-
/O.CON.KTWC.FF.W.0026.000000T0000Z-110726T1915Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
COCHISE AZ-
1134 AM MST TUE JUL 26 2011

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1215 PM MST FOR EAST
CENTRAL COCHISE COUNTY...

AT 1125 AM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE AN AREA OF STRONG THUNDERSTORMS PRODUCING FLASH FLOODING 
OVER MAINLY EASTERN PORTIONS OF THE HORSESHOE 2 BURN AREA AS WELL AS 
THE PORTAL AREA. EXPECT RAINFALL AMOUNTS IN EXCESS OF 1 INCH IN SOME 
LOCATIONS.

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO PORTAL AND
PARADISE

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS INCLUDES THE FOLLOWING STREAMS AND DRAINAGES...
SAN SIMON RIVER...EAST WHITETAIL CREEK...INDIAN CREEK...ONION
CREEK...EAST TURKEY CREEK...CAVE CREEK...KEATING CREEK...SOUTH FORK
KEATING CREEK AND SILVER CREEK.

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

&&

LAT...LON 3206 10931 3206 10906 3187 10906 3185 10923

$$

MEYER

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 26, 3:05 AM MST	Flash Flood Watch	TWC	Graham, Greenlee	16 hr
Jul 26, 10:10 AM MST	Areal Flood Advisory	TWC	Cochise	3 hr
Jul 26, 10:50 AM MST	Flash Flood Warning	TWC	Greenlee	101 min
Jul 26, 11:51 AM MST	Flash Flood Warning	TWC	Cochise	114 min
Jul 26, 1:58 PM MST	Areal Flood Advisory	TWC	Cochise	64 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.