Alert archive / Arizona / Special Weather Statements in 2012

Special Weather Statement, NWS Phoenix, AZ

August 15, 2012

NWS Phoenix, AZ issued this special weather statement at Aug 15, 2012, 2:46 PM MST. It was in force for 44 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: Aug 15, 2012, 2:46 PM MST (21:46 UTC)
Expired: Aug 15, 2012, 3:30 PM MST
In force: 44 min
Issued by: NWS Phoenix, AZ

The nearest sounding before it

Phoenix, AZ (KPSR), launched 12:00Z, 9.8 hours before the alert went out and 70 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: 1009 J/kg
Mixed-layer CIN: -305 J/kg
Mixed-layer LCL: 1950 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: -83 m²/s²
0-3 km storm-relative helicity: -8 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.

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What forecasters said that day

The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Phoenix, AZ wrote its last area forecast discussion before this special weather statement went out at Aug 15, 2:15 PM MST, 31 minutes earlier.

Area forecast discussion, Aug 15, 2:15 PM MST, 31 minutes before

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Hazardous weather outlook, Aug 15, 5:15 AM MST, 9 hours 31 minutes before

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In the hours before

Local storm report, Aug 15, 8:50 AM MST, 5 hours 56 minutes before

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Special weather statement, Aug 15, 2:46 PM MST, 0 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 14, 9:41 PM MST	Blowing Dust Advisory	PSR		79 min
Aug 14, 10:32 PM MST	Special Weather Statement	PSR	Maricopa	43 min
Aug 14, 10:37 PM MST	Areal Flood Advisory	PSR	Maricopa, Pinal	113 min
Aug 14, 10:53 PM MST	Areal Flood Advisory	PSR	Maricopa	112 min
Aug 14, 11:16 PM MST	Blowing Dust Advisory	PSR		104 min
Aug 14, 11:28 PM MST	Areal Flood Advisory	PSR	Pinal	2 hr
Aug 15, 12:00 AM MST	Special Weather Statement	PSR	Maricopa	45 min
Aug 15, 12:18 AM MST	Areal Flood Advisory	PSR	Maricopa, Pinal	117 min
Aug 15, 12:39 AM MST	Special Weather Statement	PSR		51 min
Aug 15, 3:22 PM MST	Areal Flood Advisory	PSR	Gila	3 hr
Aug 15, 3:24 PM MST	Special Weather Statement	PSR	Gila	51 min
Aug 15, 4:30 PM MST	Special Weather Statement	PSR	Gila	30 min
Aug 14, 5:02 PM MST	Blowing Dust Advisory	PSR		58 min
Aug 14, 5:15 PM MST	Special Weather Statement	PSR	Imperial	45 min

Nearby

Special Weather Statements in Arizona, 2012 Every special weather statement 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.