Alert archive / Arizona / Flash Flood Warnings in 2011

Flash Flood Warning 6, NWS Tucson, AZ

July 6, 2011Pima County, Arizona

NWS Tucson, AZ issued this flash flood warning at Jul 6, 2011, 5:58 PM MST for Pima County, Arizona. It was in force for 2 hr. 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 6, 2011, 5:58 PM MST (00:58 UTC)
Expired: Jul 6, 2011, 8:00 PM MST
In force: 2 hr
Issued by: NWS Tucson, AZ
Area: Storm-based polygon
Flood severity: None

County Pima County, AZ

The radar

The Tucson radar (KEMX), 55 km from the middle of the area, began a volume at 01:01 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, 1.0 hours before the alert went out and 39 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: 381 J/kg
Mixed-layer CIN: -152 J/kg
Mixed-layer LCL: 2696 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 32 m²/s²
0-3 km storm-relative helicity: 85 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.

205 
WGUS55 KTWC 070058
FFWTWC
AZC019-070300-
/O.NEW.KTWC.FF.W.0006.110707T0058Z-110707T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TUCSON AZ
558 PM MST WED JUL 6 2011

THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHEASTERN PIMA COUNTY IN SOUTH CENTRAL ARIZONA...

* UNTIL 800 PM MST

* AT 548 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
FLASH FLOODING ALONG CHIMNEY ROCK CREEK AND BUEHMAN CANYON NEAR 
REDINGTON. RADAR ESTIMATES INDICATE THAT 2 TO 3 INCHES OF RAINFALL 
HAS OCCURED OVER THE PAST HOUR IN THIS AREA. WASHES FLOWING OVER 
REDINGTON ROAD NEAR REDINGTON WILL BE FLOODED.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN HILLY TERRAIN THERE ARE HUNDREDS OF LOW WATER CROSSINGS WHICH ARE
POTENTIALLY DANGEROUS IN HEAVY RAIN. DO NOT ATTEMPT TO TRAVEL ACROSS
FLOODED ROADS. FIND ALTERNATE ROUTES. IT TAKES ONLY A FEW INCHES OF
SWIFTLY FLOWING WATER TO CARRY VEHICLES AWAY.

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

&&

LAT...LON 3235 11065 3243 11067 3246 11050 3242 11045
      3229 11054

$$

SHOEMAKER

1 follow-up statement

323 
WGUS75 KTWC 070253
FFSTWC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
753 PM MST WED JUL 6 2011

AZC019-070303-
/O.EXP.KTWC.FF.W.0006.000000T0000Z-110707T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
PIMA AZ-
753 PM MST WED JUL 6 2011

...THE FLASH FLOOD WARNING WILL EXPIRE AT 800 PM MST FOR EXTREME
NORTHEASTERN PIMA COUNTY...

LAT...LON 3235 11065 3243 11067 3246 11050 3242 11045
      3229 11054

$$

MINNICK

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 6, 5:06 PM MST	Severe Thunderstorm Warning	TWC	Graham	39 min
Jul 6, 5:07 PM MST	Areal Flood Advisory	TWC	Cochise, Pima	3 hr
Jul 6, 5:19 PM MST	Severe Thunderstorm Warning	TWC	Cochise	41 min
Jul 7, 2:36 PM MST	Special Weather Statement	TWC	Cochise	24 min
Jul 7, 2:40 PM MST	Severe Thunderstorm Warning	TWC	Cochise	50 min
Jul 7, 3:16 PM MST	Flash Flood Warning	TWC	Cochise	119 min
Jul 7, 3:34 PM MST	Areal Flood Advisory	TWC	Cochise	3 hr
Jul 7, 3:54 PM MST	Severe Thunderstorm Warning	TWC	Cochise	51 min
Jul 7, 4:20 PM MST	Severe Thunderstorm Warning	TWC	Cochise, Pima	40 min
Jul 7, 4:42 PM MST	Severe Thunderstorm Warning	TWC	Pima, Santa Cruz	48 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.