Alert archive / Arizona / Flash Flood Warnings in 2015

Flash Flood Warning 3, NWS Tucson, AZ

July 6, 2015Cochise County, Arizona

NWS Tucson, AZ issued this flash flood warning at Jul 6, 2015, 4:03 PM MST for Cochise County, Arizona. It was in force for 117 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Jul 6, 2015, 4:03 PM MST (23:03 UTC)
Expired
Jul 6, 2015, 6:00 PM MST
In force
117 min
Issued by
NWS Tucson, AZ
Area
Storm-based polygon
Flood severity
None

County Cochise County, AZ

The radar

The Tucson radar (KEMX), 63 km from the middle of the area, began a volume at 23:04 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.

What was reported inside it

TimeReportWhereRemark
Jul 6, 4:30 PM MSTFLASH FLOOD3 N Coronado National M, AZREPORT OF 1.16 INCHES OF RAINFALL AS OF 1630 AND PEA SIZED HAIL. TRIBUTARY NEAR HOME IS 3 TO 4 FT WIDE AND 1 FT DEEP WITH SWIFTLY FLOWING WATER OUT OF ASH CANYON.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Tuscon, AZ (KDMA), launched 12:00Z, 11.1 hours before the alert went out and 103 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 2015-07-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 631 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Tuscon, AZ at 12:00Z on 2015-07-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 14 square meters per square second.193958Sfc1 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
631 J/kg
Mixed-layer CIN
-78 J/kg
Mixed-layer LCL
1293 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
14 m²/s²
0-3 km storm-relative helicity
2 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.

269 
WGUS55 KTWC 062303
FFWTWC
AZC003-070100-
/O.NEW.KTWC.FF.W.0003.150706T2303Z-150707T0100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TUCSON AZ
403 PM MST MON JUL 6 2015

THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHWESTERN COCHISE COUNTY IN SOUTHEASTERN ARIZONA...

* UNTIL 600 PM MST
    
* AT 358 PM MST...DOPPLER RADAR AND AUTOMATED RAIN GAUGES BOTH 
  INDICATED A THUNDERSTORM PRODUCING HEAVY RAIN ACROSS ASH AND 
  HUNTER CANYONS IN THE SOUTHERN HUACHUCA MOUNTAINS. AN AUTOMATED 
  RAIN GAGE IN ASH CANYON REPORTED 1.73 INCHES OF RAIN HAD FALLEN IN 
  THE PAST HOUR...AND ANOTHER GAGE IN HUNTER CANYON REPORTED 1.26 
  INCHES. 
  
  RADAR ESTIMATES THAT PORTIONS OF THE SOUTHERN HUACHUCA MOUNTAINS   
  HAVE RECEIVED BETWEEN 1 AND 2 INCHES. FLASH FLOODING IS EXPECTED 
  TO BEGIN SHORTLY.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  SIERRA VISTA...SIERRA VISTA SOUTHEAST...NICKSVILLE...RAMSEY CANYON
  PRESERVE...HEREFORD AND CORONADO NATIONAL MEMORIAL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

&&

LAT...LON 3154 11019 3134 11015 3134 11032 3145 11031

$$
2 follow-up statements
724 
WGUS75 KTWC 070027
FFSTWC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
527 PM MST MON JUL 6 2015

AZC003-070100-
/O.CON.KTWC.FF.W.0003.000000T0000Z-150707T0100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
COCHISE AZ-
527 PM MST MON JUL 6 2015

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 600 PM MST FOR
SOUTHWESTERN COCHISE COUNTY...

AT 518 PM MST...ALTHOUGH THE STORMS THAT PRODUCED THE HEAVY RAINFALL 
ACROSS ASH AND HUNTER CANYONS IN THE SOUTHERN HUACHUCA MOUNTAINS 
HAVE SUBSIDED...SIGNIFICANT RAINFALL RUNOFF WILL CONTINUE TO RESULT 
IN FLASH FLOODING IN HUNTER CANYON AND ALONG ASH CREEK. SMALL ROADS 
THAT INTERSECT ASH CREEK TO THE SOUTH OF HIGHWAY 92 ARE LIKELY 
IMPASSIBLE DUE TO THE FLASH FLOODING. 

AN AUTOMATED RAIN GAGE IN ASH CANYON REPORTED 2.72 INCHES OF RAIN 
HAS FALLEN FROM THESE STORMS...AND ANOTHER IN HUNTER CANYON REPORTED 
1.57 INCHES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

&&

LAT...LON 3154 11019 3134 11015 3134 11032 3145 11031

$$
056 
WGUS75 KTWC 070056
FFSTWC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
556 PM MST MON JUL 6 2015

AZC003-070105-
/O.EXP.KTWC.FF.W.0003.000000T0000Z-150707T0100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
COCHISE AZ-
556 PM MST MON JUL 6 2015

...THE FLASH FLOOD WARNING FOR SOUTHWESTERN COCHISE COUNTY WILL
EXPIRE AT 600 PM MST...

THE HEAVY RAIN THAT FELL ACROSS THE SOUTHERN HUACHUCA MOUNTAINS 
HAS HAD AMLPE TIME TO FILL INTO ASH CREEK...AND THE THREAT OF 
FLASH FLOODING HAS SUBSIDED. PLEASE CONTINUE TO HEED ALL ROAD 
CLOSURES.

LAT...LON 3154 11019 3134 11015 3134 11032 3145 11031

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 6, 3:49 PM MSTAreal Flood AdvisoryTWCCochise, Santa Cruz3 hr
Jul 6, 3:56 PM MSTSpecial Weather StatementTWCSanta Cruz34 min

Nearby

Flash Flood Warnings in Arizona, 2015Every flash flood warning in 2015

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.