Alert archive / Arizona / Flash Flood Warnings in 2016

Flash Flood Warning 4, NWS Tucson, AZ

July 7, 2016Cochise County, Arizona

NWS Tucson, AZ issued this flash flood warning at Jul 7, 2016, 1:20 PM MST for Cochise County, Arizona. It was in force for 85 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 7, 2016, 1:20 PM MST (20:20 UTC)
Expired: Jul 7, 2016, 2:45 PM MST
In force: 85 min
Issued by: NWS Tucson, AZ
Area: Storm-based polygon
Flood severity: None

County Cochise County, AZ

The radar

The Tucson radar (KEMX), 44 km from the middle of the area, began a volume at 20:22 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 12:00Z, 8.3 hours before the alert went out and 83 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: 559 J/kg
Mixed-layer CIN: -179 J/kg
Mixed-layer LCL: 1608 m above ground
0-6 km bulk shear: 5 kt
0-1 km storm-relative helicity: 3 m²/s²
0-3 km storm-relative helicity: -18 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

363 
WGUS55 KTWC 072020
FFWTWC
AZC003-072145-
/O.NEW.KTWC.FF.W.0004.160707T2020Z-160707T2145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TUCSON AZ
120 PM MST THU JUL 7 2016

THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A

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

* UNTIL 245 PM MST

* AT 118 PM MST...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCED
  HEAVY RAIN FROM WHETSTONE TO HUACHUCA CITY. 

* NORMALLY DRY WASHES AND LOW WATER CROSSINGS MAY BE INUNDATED IN
  THE FOLLOWING LOCATIONS...
  HUACHUCA CITY...WHETSTONE AND RESIDENTIAL AREAS NEAR WHETSTONE
  AIRPORT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3172 11020 3154 11012 3161 11037 3170 11039

$$

KD

2 follow-up statements

067 
WGUS75 KTWC 072105
FFSTWC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
205 PM MST THU JUL 7 2016

AZC003-072145-
/O.CON.KTWC.FF.W.0004.000000T0000Z-160707T2145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
COCHISE-
205 PM MST THU JUL 7 2016

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 245 PM MST FOR
SOUTHWESTERN COCHISE COUNTY...

AT 158 PM MST...DOPPLER RADAR INDICATED HEAVY RAIN WAS ENDING IN THE
HUACHUCA CITY AND WHETSTONE AREAS BUT HEAVY RUNOFF WILL CONTINUE
INTO THE BABOCOMARI RIVER NORTHEAST OF HUACHUCA CITY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3172 11020 3154 11012 3161 11037 3170 11039

$$

KD

303 
WGUS75 KTWC 072137
FFSTWC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
237 PM MST THU JUL 7 2016

AZC003-072145-
/O.EXP.KTWC.FF.W.0004.000000T0000Z-160707T2145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
COCHISE-
237 PM MST THU JUL 7 2016

...THE FLASH FLOOD WARNING FOR SOUTHWESTERN COCHISE COUNTY WILL
EXPIRE AT 245 PM MST...

THE HEAVY RAIN HAS ENDED. FLOODING IS NO LONGER EXPECTED TO POSE A
THREAT. PLEASE CONTINUE TO HEED ANY ROAD CLOSURES THAT MAY BE IN 
EFFECT AND REMEMBER...TURN AROUND DON'T DROWN!

REPORT FLASH FLOODING TO YOUR LOCAL LAW ENFORCEMENT OR TO THE
NATIONAL WEATHER SERVICE.

LAT...LON 3172 11020 3154 11012 3161 11037 3170 11039

$$

KD

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 6, 5:20 PM MST	Flash Flood Warning	TWC	Santa Cruz	115 min
Jul 6, 5:30 PM MST	Areal Flood Advisory	TWC	Pima, Santa Cruz	2 hr
Jul 6, 6:18 PM MST	Areal Flood Advisory	TWC	Pima	117 min
Jul 7, 12:30 PM MST	Areal Flood Advisory	TWC	Cochise	2 hr
Jul 7, 12:39 PM MST	Flash Flood Warning	TWC	Cochise	66 min

Nearby

Flash Flood Warnings in Arizona, 2016 Every flash flood warning in 2016

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.