Alert archive / Arizona / Flash Flood Warnings in 2012

Flash Flood Warning 3, NWS Phoenix, AZ

July 13, 2012La Paz County, Arizona

NWS Phoenix, AZ issued this flash flood warning at Jul 13, 2012, 12:16 PM MST for La Paz County, Arizona. It was in force for 119 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 13, 2012, 12:16 PM MST (19:16 UTC)
Expired: Jul 13, 2012, 2:15 PM MST
In force: 119 min
Issued by: NWS Phoenix, AZ
Area: Storm-based polygon
Flood severity: None

County La Paz County, AZ

The radar

The Yuma radar (KYUX), 148 km from the middle of the area, began a volume at 19:16 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

Phoenix, AZ (KPSR), launched 12:00Z, 7.3 hours before the alert went out and 189 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: 611 J/kg
Mixed-layer CIN: -110 J/kg
Mixed-layer LCL: 1506 m above ground
0-6 km bulk shear: 9 kt
0-1 km storm-relative helicity: 7 m²/s²
0-3 km storm-relative helicity: 72 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

468 
WGUS55 KPSR 131916
FFWPSR
AZC012-132115-
/O.NEW.KPSR.FF.W.0003.120713T1916Z-120713T2115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PHOENIX AZ
1216 PM MST FRI JUL 13 2012

THE NATIONAL WEATHER SERVICE IN PHOENIX HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CENTRAL LA PAZ COUNTY IN WEST CENTRAL ARIZONA...

* UNTIL 215 PM MST

* AT 1210 PM MST...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED
  FLASH FLOODING FROM A THUNDERSTORM NEAR BRENDA...OR 39 MILES
  SOUTHEAST OF PARKER...MOVING NORTH AT 10 MPH.

* THE STORM PRODUCING FLASH FLOODING WILL OTHERWISE REMAIN OVER
  MAINLY RURAL AREAS OF THE INDICATED COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLASH FLOOD WARNING MEANS THAT PEOPLE ALONG THE BANKS OF WASHES AND
CREEKS SHOULD MOVE TO HIGHER GROUND IMMEDIATELY. NORMALLY DRY WASHES
AND STREAMS WILL SUDDENLY HAVE RUNNING WATER AND MAKE UNBRIDGED
CROSSINGS IMPASSABLE. STREETS...UNDERPASSES...AND LOW SPOTS WILL
BECOME INUNDATED MAKING DRIVING HAZARDOUS IN THE WARNED AREA.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. REMEMBER TURN AROUND DONT DROWN.

&&

LAT...LON 3382 11405 3380 11383 3352 11387 3354 11413

$$

KUHLMAN

1 follow-up statement

676 
WGUS75 KPSR 132008
FFSPSR

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE PHOENIX AZ
108 PM MST FRI JUL 13 2012

AZC012-132115-
/O.CON.KPSR.FF.W.0003.000000T0000Z-120713T2115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
LA PAZ AZ-
108 PM MST FRI JUL 13 2012

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 215 PM MST FOR
CENTRAL LA PAZ COUNTY...

AT 103 PM MST...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A 
THUNDERSTORM WITH HEAVY RAIN NEAR BRENDA...OR 39 MILES SOUTHEAST OF 
PARKER...MOVING NORTH AT 10 MPH.

RADAR ESTIMATES THAT 1 TO 2 INCHES OF RAIN HAS FALLEN IN THE BRENDA 
AREA. RUNOFF AND FLOODING WILL BE A THREAT ALONG THE INTERSTATE 10 
AND U.S. HIGHWAY 60 CORRIDORS NEAR AND EAST OF BRENDA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FLOODING IS OCCURRING OR IS IMMINENT. MOST FLOOD RELATED DEATHS OCCUR
IN AUTOMOBILES. DO NOT ATTEMPT TO CROSS WATER COVERED BRIDGES...
DIPS...OR LOW WATER CROSSINGS. NEVER TRY TO CROSS A FLOWING STREAM...
EVEN A SMALL ONE...ON FOOT. TO ESCAPE RISING WATER MOVE UP TO HIGHER 
GROUND. REMEMBER...TURN AROUND...DONT DROWN.

&&

LAT...LON 3382 11405 3380 11383 3352 11387 3354 11413

$$

WOODALL

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 12, 5:58 PM MST	Severe Thunderstorm Warning	PSR	Maricopa	62 min
Jul 12, 6:39 PM MST	Areal Flood Advisory	PSR	Maricopa	111 min
Jul 12, 7:40 PM MST	Special Weather Statement	PSR	Maricopa	65 min
Jul 13, 8:34 AM MST	Areal Flood Advisory	PSR	Maricopa, Pinal	116 min
Jul 13, 10:37 AM MST	Areal Flood Advisory	PSR	La Paz	113 min
Jul 13, 11:17 AM MST	Flash Flood Warning	PSR	La Paz	3 hr
Jul 13, 11:24 AM MST	Areal Flood Advisory	PSR	Gila	111 min
Jul 13, 11:56 AM MST	Areal Flood Advisory	PSR	La Paz	2 hr
Jul 13, 12:20 PM MST	Special Weather Statement	PSR	Gila	40 min
Jul 13, 12:25 PM MST	Areal Flood Advisory	PSR	Gila, Maricopa	110 min
Jul 13, 12:48 PM MST	Flash Flood Warning	PSR	Gila	117 min
Jul 13, 1:18 PM MST	Flash Flood Watch	PSR		11 hr
Jul 13, 2:18 PM MST	Areal Flood Advisory	PSR	La Paz	117 min
Jul 13, 2:57 PM MST	Special Weather Statement	PSR		33 min
Jul 13, 3:05 PM MST	Areal Flood Advisory	PSR	Maricopa	115 min
Jul 13, 3:59 PM MST	Special Weather Statement	PSR		46 min
Jul 13, 4:21 PM MST	Areal Flood Advisory	PSR	Gila	114 min
Jul 13, 4:46 PM MST	Special Weather Statement	PSR		44 min

Nearby

Flash Flood Warnings in Arizona, 2012 Every flash flood warning in 2012

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.