Alert archive / Arizona / Flash Flood Warnings in 2017

Flash Flood Warning 40, NWS Tucson, AZ

July 28, 2017Pima County, Arizona

NWS Tucson, AZ issued this flash flood warning at Jul 28, 2017, 9:09 PM MST for Pima 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 28, 2017, 9:09 PM MST (04:09 UTC)
Expired: Jul 28, 2017, 11:15 PM MST
In force: 2 hr
Issued by: NWS Tucson, AZ
Area: Storm-based polygon
Flood severity: None

County Pima County, AZ

The radar

The Tucson radar (KEMX), 45 km from the middle of the area, began a volume at 04:09 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, 4.2 hours before the alert went out and 29 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.

433 
WGUS55 KTWC 290409
FFWTWC
AZC019-290615-
/O.NEW.KTWC.FF.W.0040.170729T0409Z-170729T0615Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

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

The National Weather Service in Tucson has issued a

* Flash Flood Warning for...
  Eastern Pima County in southeastern Arizona...

* Until 1115 PM MST

* At 908 PM MST, Doppler radar indicated thunderstorms producing 
  heavy rain across the Redington Pass area. One inch of rain has 
  occurred in the past 15 minutes at Park Tank in the Rincon 
  Mountains. Flash flooding is expected to begin shortly.

* Some locations that will experience flooding include...
  Tanque Verde and Redington. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Be especially cautious at night when it is harder to recognize the
dangers of flooding.

A Flash Flood Warning means that flooding is imminent or occurring.
If you are in the warned area move to higher ground immediately.
Residents living along streams and creeks should take immediate
precautions to protect life and property.

&&

LAT...LON 3222 11076 3241 11071 3245 11046 3219 11046

$$

GL

1 follow-up statement

720 
WGUS75 KTWC 290434
FFSTWC

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

AZC019-290615-
/O.CON.KTWC.FF.W.0040.000000T0000Z-170729T0615Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Pima-
934 PM MST FRI JUL 28 2017

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1115 PM MST FOR
EASTERN PIMA COUNTY...

At 933 PM MST, Doppler radar indicated thunderstorms producing heavy 
rain across the warned area. An automated rain gauge at Park Tank in 
the Rincon Mountains is up to 2.17 inches in the past hour. Flash 
flooding is expected to begin shortly in the area including on 
Tanque Verde creek. 

Normally dry washes and low water crossings may be inundated in the
following locations...
Tanque Verde and Redington. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Be especially cautious at night when it is harder to recognize the
dangers of flooding.

A Flash Flood Warning means that flooding is imminent or occurring.
If you are in the warned area move to higher ground immediately.
Residents living along streams and creeks should take immediate
precautions to protect life and property.

&&

LAT...LON 3222 11076 3241 11071 3245 11046 3219 11046

$$

GL

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, 6:23 PM MST	Flash Flood Warning	TWC	Cochise	112 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, 9:19 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.