Alert archive / Arizona / Flash Flood Warnings in 2011

Flash Flood Warning 15, NWS Tucson, AZ

July 11, 2011Cochise County, Arizona

NWS Tucson, AZ issued this flash flood warning at Jul 11, 2011, 6:06 PM MST for Cochise County, Arizona. It was in force for 114 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 11, 2011, 6:06 PM MST (01:06 UTC)
Expired
Jul 11, 2011, 8:00 PM MST
In force
114 min
Issued by
NWS Tucson, AZ
Area
Storm-based polygon
Flood severity
None

County Cochise County, AZ

The radar

The Tucson radar (KEMX), 131 km from the middle of the area, began a volume at 01:09 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, 1.1 hours before the alert went out and 157 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 00:00Z on 2011-07-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 18 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 00:00Z on 2011-07-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -16 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
18 J/kg
Mixed-layer CIN
-106 J/kg
Mixed-layer LCL
1635 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
-16 m²/s²
0-3 km storm-relative helicity
35 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.

682 
WGUS55 KTWC 120106
FFWTWC
AZC003-120300-
/O.NEW.KTWC.FF.W.0015.110712T0106Z-110712T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TUCSON AZ
606 PM MST MON JUL 11 2011

THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A

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

* UNTIL 800 PM MST

* AT 600 PM MST...ANOTHER STRONG THUNDERSTORM WAS MOVING INTO THE 
  CHIRICAHUA MOUNTAIN AREA...THIS ONE NEAR PORTAL. WITH THE PREVIOUS
  RAINFALL OVER THE PAST HOUR ADDITIONAL AMOUNTS ARE EXPECTED TO
  LEAD TO FLASH FLOODING IN THE HORSESHOE 2 BURN AREA. STORM
  MOVEMENT WAS TO THE NORTHEAST AT 10 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  PARADISE AND CHIRICAHUA NATIONAL MONUMENT

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3179 10938 3219 10952 3223 10914 3206 10904
      3180 10904

$$

MEYER
2 follow-up statements
524 
WGUS75 KTWC 120147
FFSTWC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
647 PM MST MON JUL 11 2011

AZC003-120300-
/O.CON.KTWC.FF.W.0015.000000T0000Z-110712T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
COCHISE AZ-
647 PM MST MON JUL 11 2011

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 800 PM MST FOR EAST 
CENTRAL COCHISE COUNTY...

AT 640 PM MST...SHOWERS AND THUNDERSTORMS WERE WEAKENING NEAR 
PORTAL...WITH ONLY LIGHT TO MODERATE SHOWERS OVER THE CHIRICAHUAS. 
RUNOFF FROM EARLIER HEAVY RAINFALL AMOUNTS WILL CONTINUE TO CREATE 
FLASH FLOOD PROBLEMS IN THE HORSESHOE 2 BURN AREA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS INCLUDES THE FOLLOWING STREAMS AND DRAINAGES...
PINERY CREEK...WEST WHITETAIL CREEK...PINE CREEK...BIG SAND 
WASH...LITTLE SAND WASH...ROCK CREEK...WOOD CANYON...EAST WHITETAIL 
CREEK...INDIAN CREEK...ONION CREEK...EAST TURKEY CREEK...CAVE 
CREEK...WHITEWATER DRAW...KEATING CREEK...SOUTH FORK KEATING 
CREEK...PRIDHAM CREEK...SILVER CREEK...ASH CREEK AND WITCH CREEK.

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

&&

LAT...LON 3179 10938 3219 10952 3223 10914 3206 10904
      3180 10904

$$

MEYER
597 
WGUS75 KTWC 120253
FFSTWC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
753 PM MST MON JUL 11 2011

AZC003-120303-
/O.EXP.KTWC.FF.W.0015.000000T0000Z-110712T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
COCHISE AZ-
753 PM MST MON JUL 11 2011

...THE FLASH FLOOD WARNING WILL EXPIRE AT 800 PM MST FOR EAST 
CENTRAL COCHISE COUNTY...

AT 753 PM MST SHOWERS AND THUNDERSTORMS HAD ENDED OVER EAST CENTRAL 
COCHISE COUNTY. SOME HEAVY FLOW WILL CONTINUE INTO EVENING HOURS 
FROM EARLIER RUNOFF.

LAT...LON 3179 10938 3219 10952 3223 10914 3206 10904
      3180 10904

$$

MEYER

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 11, 5:58 PM MSTSevere Thunderstorm WarningTWCCochise47 min
Jul 11, 7:12 PM MSTSevere Thunderstorm WarningTWCCochise33 min
Jul 11, 7:46 PM MSTSevere Thunderstorm WarningTWCCochise29 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.