Alert archive / Arizona / Flash Flood Warnings in 2017

Flash Flood Warning 39, NWS Tucson, AZ

July 28, 2017Cochise County, Arizona

NWS Tucson, AZ issued this flash flood warning at Jul 28, 2017, 6:23 PM MST for Cochise County, Arizona. It was in force for 112 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 28, 2017, 6:23 PM MST (01:23 UTC)
Expired: Jul 28, 2017, 8:15 PM MST
In force: 112 min
Issued by: NWS Tucson, AZ
Area: Storm-based polygon
Flood severity: None

County Cochise County, AZ

The radar

The Tucson radar (KEMX), 52 km from the middle of the area, began a volume at 01:26 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, 1.4 hours before the alert went out and 88 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: 601 J/kg
Mixed-layer CIN: -159 J/kg
Mixed-layer LCL: 1509 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: -22 m²/s²
0-3 km storm-relative helicity: 17 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

136 
WGUS55 KTWC 290123
FFWTWC
AZC003-290315-
/O.NEW.KTWC.FF.W.0039.170729T0123Z-170729T0315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Tucson AZ
623 PM MST FRI JUL 28 2017

The National Weather Service in Tucson has issued a

* Flash Flood Warning for...
  West central Cochise County in southeastern Arizona...

* Until 815 PM MST

* At 621 PM MST, Doppler radar indicated thunderstorms producing 
  heavy rain near Tombstone. Doppler radar estimated that up to two 
  inches of rain may have fallen near Tombstone.

* Some locations that will experience flooding include...
  Tombstone and Fairbank. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

Excessive runoff from heavy rainfall will cause flooding of washes
and streams, country roads, farmland, and other low lying spots.

&&

LAT...LON 3183 11002 3165 11003 3165 11024 3184 11023

$$

1 follow-up statement

602 
WGUS75 KTWC 290312
FFSTWC

Flash Flood Statement
National Weather Service Tucson AZ
812 PM MST FRI JUL 28 2017

AZC003-290322-
/O.EXP.KTWC.FF.W.0039.000000T0000Z-170729T0315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Cochise-
812 PM MST FRI JUL 28 2017

...THE FLASH FLOOD WARNING FOR WEST CENTRAL COCHISE COUNTY WILL
EXPIRE AT 815 PM MST...

The heavy rain has ended. Flooding is no longer expected to pose a 
threat. Please continue to heed any remaining road closures as light 
rain continues through 9 pm.

LAT...LON 3183 11002 3165 11003 3165 11024 3184 11023

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 28, 5:08 PM MST	Areal Flood Advisory	TWC	Cochise	2 hr
Jul 28, 5:22 PM MST	Areal Flood Advisory	TWC	Pima, Pinal	3 hr
Jul 28, 5:29 PM MST	Areal Flood Advisory	TWC	Cochise	3 hr
Jul 28, 5:36 PM MST	Areal Flood Advisory	TWC	Pima	3 hr
Jul 28, 5:40 PM MST	Special Weather Statement	TWC	Cochise	35 min
Jul 28, 5:55 PM MST	Severe Thunderstorm Warning	TWC	Cochise	35 min
Jul 28, 6:55 PM MST	Special Weather Statement	TWC	Cochise	35 min
Jul 28, 7:04 PM MST	Areal Flood Advisory	TWC	Cochise	3 hr
Jul 28, 7:31 PM MST	Areal Flood Advisory	TWC	Graham	3 hr
Jul 28, 8:48 PM MST	Areal Flood Advisory	TWC	Graham	117 min
Jul 28, 9:09 PM MST	Flash Flood Warning	TWC	Pima	2 hr
Jul 28, 9:19 PM MST	Areal Flood Advisory	TWC	Pima	116 min
Jul 28, 10:48 PM MST	Flash Flood Warning	TWC	Pima	3 hr
Jul 28, 11:16 PM MST	Flash Flood Warning	TWC	Pima	119 min
Jul 29, 11:22 AM MST	Areal Flood Advisory	TWC	Pima	113 min
Jul 29, 11:29 AM MST	Areal Flood Advisory	TWC	Pima	2 hr
Jul 29, 12:26 PM MST	Areal Flood Advisory	TWC	Cochise, Pima, Santa Cruz	3 hr
Jul 29, 1:09 PM MST	Flash Flood Warning	TWC	Santa Cruz	3 hr
Jul 29, 1:45 PM MST	Areal Flood Advisory	TWC	Pima	3 hr
Jul 29, 1:50 PM MST	Areal Flood Advisory	TWC	Pima	3 hr
Jul 29, 2:19 PM MST	Flash Flood Warning	TWC	Pima	116 min
Jul 29, 2:41 PM MST	Flash Flood Warning	TWC	Pima	3 hr
Jul 29, 3:15 PM MST	Special Weather Statement	TWC	Cochise	45 min
Jul 29, 3:24 PM MST	Special Weather Statement	TWC	Cochise	36 min
Jul 29, 3:37 PM MST	Areal Flood Advisory	TWC	Cochise	3 hr
Jul 29, 3:57 PM MST	Special Weather Statement	TWC	Cochise	33 min
Jul 29, 4:30 PM MST	Special Weather Statement	TWC		45 min

Nearby

Flash Flood Warnings in Arizona, 2017 Every flash flood warning in 2017

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.