Alert archive / Arizona / Flash Flood Warnings in 2016

Flash Flood Warning 9, NWS Tucson, AZ

July 31, 2016Cochise County, Arizona

NWS Tucson, AZ issued this flash flood warning at Jul 31, 2016, 6:48 PM MST for Cochise County, Arizona. It was in force for 117 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 31, 2016, 6:48 PM MST (01:48 UTC)
Expired: Jul 31, 2016, 8:45 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), 111 km from the middle of the area, began a volume at 01:51 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, 1.8 hours before the alert went out and 149 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: 688 J/kg
Mixed-layer CIN: -31 J/kg
Mixed-layer LCL: 2117 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: -6 m²/s²
0-3 km storm-relative helicity: 86 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

612 
WGUS55 KTWC 010148
FFWTWC
AZC003-010345-
/O.NEW.KTWC.FF.W.0009.160801T0148Z-160801T0345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TUCSON AZ
648 PM MST SUN JUL 31 2016

THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTH CENTRAL COCHISE COUNTY IN SOUTHEASTERN ARIZONA...

* UNTIL 845 PM MST

* AT 645 PM MST...DOPPLER RADAR AND AUTOMATED RAIN GAUGES INDICATED
  THUNDERSTORMS PRODUCING HEAVY RAIN EXTENDING ALONG A LINE FROM
  DOUGLAS TO BISBEE. AN AUTOMATED RAIN GAGE AND TRAINED WEATHER
  SPOTTER IN DOUGLAS REPORTED AN INCH OF RAIN HAD FALLEN IN A HALF
  HOUR...WITH ADDITIONAL RAINFALL AMOUNTS UP TO A HALF INCH
  POSSIBLE. FLASH FLOODING IS EXPECTED TO BEGIN SHORTLY.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  DOUGLAS...BISBEE...BISBEE-DOUGLAS AIRPORT...PIRTLEVILLE AND NACO. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3147 10934 3134 10933 3134 10996 3154 10997

$$

1 follow-up statement

407 
WGUS75 KTWC 010352
FFSTWC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
852 PM MST SUN JUL 31 2016

AZC003-010401-
/O.EXP.KTWC.FF.W.0009.000000T0000Z-160801T0345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
COCHISE-
852 PM MST SUN JUL 31 2016

...THE FLASH FLOOD WARNING FOR SOUTH CENTRAL COCHISE COUNTY HAS
EXPIRED...

THE HEAVY RAIN HAS ENDED. FLOODING IS NO LONGER EXPECTED TO POSE A
THREAT. PLEASE CONTINUE TO HEED ANY REMAINING ROAD CLOSURES.

LAT...LON 3147 10934 3134 10933 3134 10996 3154 10997

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 31, 5:34 PM MST	Areal Flood Advisory	TWC	Cochise, Pima, Santa Cruz	116 min
Jul 31, 5:36 PM MST	Severe Thunderstorm Warning	TWC	Cochise	39 min
Jul 31, 6:09 PM MST	Special Weather Statement	TWC	Cochise	51 min
Jul 31, 6:12 PM MST	Severe Thunderstorm Warning	TWC	Cochise	48 min
Jul 31, 6:41 PM MST	Flash Flood Warning	TWC	Cochise	109 min
Jul 31, 7:55 PM MST	Areal Flood Advisory	TWC	Cochise, Graham, Pima, Santa Cruz	110 min
Jul 31, 8:10 PM MST	Flash Flood Warning	TWC	Cochise	110 min
Jul 31, 8:37 PM MST	Areal Flood Advisory	TWC	Pima	3 hr
Jul 31, 9:06 PM MST	Flash Flood Warning	TWC	Pima	114 min
Jul 31, 10:17 PM MST	Flash Flood Warning	TWC	Pima	3 hr
Jul 31, 10:42 PM MST	Areal Flood Advisory	TWC	Pima, Pinal	6 hr
Jul 31, 11:12 PM MST	Blowing Dust Advisory	TWC	Pima, Pinal	108 min
Aug 1, 2:35 PM MST	Areal Flood Advisory	TWC	Santa Cruz	55 min
Aug 1, 3:33 PM MST	Areal Flood Advisory	TWC	Cochise	57 min
Aug 1, 4:21 PM MST	Areal Flood Advisory	TWC	Pima, Pinal	54 min
Aug 1, 4:47 PM MST	Flash Flood Warning	TWC	Pima, Pinal	88 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.