Alert archive / Arizona / Flash Flood Warnings in 2014

Flash Flood Warning 7, NWS Tucson, AZ

July 8, 2014Cochise County, Arizona

NWS Tucson, AZ issued this flash flood warning at Jul 8, 2014, 10:43 PM MST for Cochise 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 8, 2014, 10:43 PM MST (05:43 UTC)
Expired: Jul 9, 2014, 12:45 AM MST
In force: 2 hr
Issued by: NWS Tucson, AZ
Area: Storm-based polygon
Flood severity: None

County Cochise County, AZ

The radar

The Tucson radar (KEMX), 54 km from the middle of the area, began a volume at 05:46 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 (KDMA), launched 00:00Z, 5.7 hours before the alert went out and 93 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: 1163 J/kg
Mixed-layer CIN: -46 J/kg
Mixed-layer LCL: 2447 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: -39 m²/s²
0-3 km storm-relative helicity: -15 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.

495 
WGUS55 KTWC 090543
FFWTWC
AZC003-090745-
/O.NEW.KTWC.FF.W.0007.140709T0543Z-140709T0745Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TUCSON AZ
1043 PM MST TUE JUL 8 2014

THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A

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

* UNTIL 1245 AM MST

* AT 1036 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR 
  INDICATED EXTREMELY HEAVY RAINFALL FROM A STRONG THUNDERSTORM
  JUST SOUTHWEST OF SIERRA VISTA NEAR THE HUACHUCA MOUNTAINS.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO RAMSEY
  CANYON PRESERVE...NICKSVILLE...HEREFORD...AND SOUTH SIERRA
  VISTA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3163 11043 3148 11020 3134 11015 3135 11043

$$

MEYER

2 follow-up statements

226 
WGUS75 KTWC 090614
FFSTWC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
1114 PM MST TUE JUL 8 2014

AZC003-090745-
/O.CON.KTWC.FF.W.0007.000000T0000Z-140709T0745Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
COCHISE AZ-
1114 PM MST TUE JUL 8 2014

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1245 AM MST FOR
SOUTHWESTERN COCHISE COUNTY...

AT 1106 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
THAT THE THUNDERSTORMS THAT PRODUCED HEAVY RAINFALL IN THE HUACHUCA 
MOUNTAINS CONTINUES TO TRACK WEST AT 20 MPH. 

RADAR ESTIMATES THAT BETWEEN 1.00 TO 1.75 INCHES OF RAIN HAS FALLEN 
ACROSS THE EASTERN SLOPES OF THE HUACHUCA MOUNTAINS. AN AUTOMATED 
RAIN GAGE IN ASH CANYON HAS REPORTED 1.14 INCHES HAS FALLEN IN THE 
PAST HOUR...AND ANOTHER GAGE IN CARR AND MILLER CANYONS REPORTED 
0.98 INCHES. RAINFALL RUNOFF WILL RAPIDLY DRAIN INTO WASHES IN THESE 
CANYONS IMPACTING AREAS WEST OF HIGHWAY 92 TO THE SOUTH OF SIERRA 
VISTA.   

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL 
CREEKS AND STREAMS...HIGHWAYS AND ROADWAY DIPS. ADDITIONALLY... 
COUNTRY ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS...STREAMS AND 
OTHER LOW LYING AREAS ARE SUBJECT TO FLOODING.

&&

LAT...LON 3163 11043 3148 11020 3134 11015 3135 11043

$$

441 
WGUS75 KTWC 090737
FFSTWC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
1237 AM MST WED JUL 9 2014

AZC003-090746-
/O.EXP.KTWC.FF.W.0007.000000T0000Z-140709T0745Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
COCHISE AZ-
1237 AM MST WED JUL 9 2014

...THE FLASH FLOOD WARNING WILL EXPIRE AT 1245 AM MST FOR
SOUTHWESTERN COCHISE COUNTY...

AT 1230 AM MST SHOWERS HAD WEAKENED AND SHIFTED INTO SANTA CRUZ 
COUNTY. HEAVY FLOW WILL CONTINUE IN SOME WASHES THROUGH THE EARLY 
MORNING HOURS...ESPECIALLY SOUTH AND WEST OF SIERRA VISTA. A SMALL 
STREAM FLOOD ADVISORY REMAINS IN EFFECT UNTIL 245 AM MST.

LAT...LON 3163 11043 3148 11020 3134 11015 3135 11043

$$

MEYER

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 8, 5:11 PM MST	Areal Flood Advisory	TWC	Pima	109 min
Jul 8, 5:28 PM MST	Special Weather Statement	TWC	Pima	32 min
Jul 8, 5:30 PM MST	Severe Thunderstorm Warning	TWC	Pinal	30 min
Jul 8, 5:53 PM MST	Areal Flood Advisory	TWC	Pima	112 min
Jul 8, 5:56 PM MST	Flash Flood Warning	TWC	Pima	2 hr
Jul 8, 6:13 PM MST	Special Weather Statement	TWC	Pinal	62 min
Jul 8, 7:15 PM MST	Severe Thunderstorm Warning	TWC	Pinal	45 min
Jul 8, 7:19 PM MST	Severe Thunderstorm Warning	TWC	Pinal	41 min
Jul 8, 8:00 PM MST	Areal Flood Advisory	TWC	Pinal	90 min
Jul 8, 9:36 PM MST	Areal Flood Advisory	TWC	Pinal	114 min
Jul 8, 10:56 PM MST	Special Weather Statement	TWC	Pinal	49 min
Jul 8, 11:45 PM MST	Areal Flood Advisory	TWC	Cochise, Santa Cruz	3 hr
Jul 9, 2:02 AM MST	Areal Flood Advisory	TWC	Pima	118 min
Jul 9, 2:26 AM MST	Special Weather Statement	TWC		49 min
Jul 9, 2:56 AM MST	Areal Flood Advisory	TWC	Pima	3 hr
Jul 9, 3:59 AM MST	Special Weather Statement	TWC		46 min
Jul 9, 4:57 AM MST	Areal Flood Advisory	TWC	Pima	3 hr
Jul 9, 4:23 PM MST	Areal Flood Advisory	TWC	Cochise, Pima, Santa Cruz	112 min
Jul 9, 4:25 PM MST	Areal Flood Advisory	TWC	Pima	110 min

Nearby

Flash Flood Warnings in Arizona, 2014 Every flash flood warning in 2014

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.