Alert archive / Arizona / Flash Flood Warnings in 2016

Flash Flood Warning 25, NWS Tucson, AZ

August 11, 2016Pinal County, Arizona

NWS Tucson, AZ issued this flash flood warning at Aug 11, 2016, 6:26 AM MST for Pinal County, Arizona. It was in force for 3 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: Aug 11, 2016, 6:26 AM MST (13:26 UTC)
Expired: Aug 11, 2016, 9:30 AM MST
In force: 3 hr
Issued by: NWS Tucson, AZ
Area: Storm-based polygon
Flood severity: None

County Pinal County, AZ

The radar

The Tucson radar (KEMX), 93 km from the middle of the area, began a volume at 13:26 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 12:00Z, 1.4 hours before the alert went out and 57 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: 1172 J/kg
Mixed-layer CIN: -6 J/kg
Mixed-layer LCL: 967 m above ground
0-6 km bulk shear: 13 kt
0-1 km storm-relative helicity: 31 m²/s²
0-3 km storm-relative helicity: 30 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

163 
WGUS55 KTWC 111326
FFWTWC
AZC021-111630-
/O.NEW.KTWC.FF.W.0025.160811T1326Z-160811T1630Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TUCSON AZ
626 AM MST THU AUG 11 2016

THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHEASTERN PINAL COUNTY IN SOUTHEASTERN ARIZONA...

* UNTIL 930 AM MST

* AT 623 AM MST...DOPPLER RADAR INDICATED THUNDERSTORMS WERE
  PRODUCING HEAVY RAIN ACROSS PORTIONS OF PINAL COUNTY FROM HIGHWAY
  79 TO ORACLE JUNCTION TO ORACLE AND FROM SAN MANUEL TO MAMMOTH.
  RADAR ESTIMATES OF 2.5 TO 3 INCHES ARE OCCURRING ALONG HIGHWAY 79
  AND WEST OF MAMMOTH. AUTOMATED GAUGES HAVE REPORTED ALMOST 1.7
  INCHES OF RAIN IN SOME LOCATIONS AS WELL. FLASH FLOODING IS
  EXPECTED TO BEGIN SHORTLY.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  MAMMOTH...SAN MANUEL...ORACLE...SADDLEBROOKE...
  ARAVAIPA CREEK PRESERVE...ORACLE JUNCTION...CAMPO BONITO...
  DUDLEYVILLE AND BIOSPHERE 2.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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 3252 11127 3280 11138 3304 11047 3252 11047

$$

MOLLERE

1 follow-up statement

494 
WGUS75 KTWC 111632
FFSTWC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
932 AM MST THU AUG 11 2016

AZC021-111639-
/O.EXP.KTWC.FF.W.0025.000000T0000Z-160811T1630Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
PINAL-
932 AM MST THU AUG 11 2016

...THE FLASH FLOOD WARNING FOR SOUTHEASTERN PINAL COUNTY WILL EXPIRE
AT 930 AM MST...

ALTHOUGH SOUTHEAST PINAL HAS RECEIVED SIGNIFICANT RAINFALL THIS
MORNING...THE THREAT OF FLASH FLOODING HAS SUBSIDED. HOWEVER...
RAINFALL RUNOFF WILL CONTINUE TO DRAIN INTO ROADWAY DIPS, NORMALLY
DRY WASHES AND OTHER LOW LYING AREAS. A SMALL STREAM FLOOD ADVISORY
REMAINS IN EFFECT UNTIL 1115 AM. 

LAT...LON 3252 11127 3280 11138 3304 11047 3252 11047

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 11, 12:23 AM MST	Areal Flood Advisory	TWC	Cochise	112 min
Aug 11, 2:15 AM MST	Areal Flood Advisory	TWC	Cochise, Graham	3 hr
Aug 11, 4:00 AM MST	Areal Flood Advisory	TWC	Pima, Pinal	3 hr
Aug 11, 4:59 AM MST	Areal Flood Advisory	TWC	Pinal	2 hr
Aug 11, 8:18 AM MST	Areal Flood Advisory	TWC	Pima, Pinal	3 hr
Aug 11, 9:42 AM MST	Areal Flood Warning	TWC	Pinal	3 hr
Aug 11, 10:47 AM MST	Areal Flood Warning	TWC	Pinal	6 hr
Aug 11, 11:15 AM MST	Areal Flood Advisory	TWC	Pima, Pinal	3 hr
Aug 11, 3:36 PM MST	Areal Flood Warning	TWC	Pinal	24 hr

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.