Alert archive / Arizona / Special Weather Statements in 2015

Special Weather Statement, NWS Phoenix, AZ

October 16, 2015

NWS Phoenix, AZ issued this special weather statement at Oct 16, 2015, 5:48 PM MST. It was in force for 42 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: Oct 16, 2015, 5:48 PM MST (00:48 UTC)
Expired: Oct 16, 2015, 6:30 PM MST
In force: 42 min
Issued by: NWS Phoenix, AZ

The radar

The Yuma radar (KYUX), 106 km from the middle of the area, began a volume at 00:48 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

San Diego, CA (KNKX), launched 00:00Z, 0.8 hours before the alert went out and 229 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: 408 J/kg
Mixed-layer CIN: -78 J/kg
Mixed-layer LCL: 528 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 24 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.

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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 Oct 16, 5:20 PM MST, 28 minutes earlier.

Area forecast discussion, Oct 16, 5:20 PM MST, 28 minutes before

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In the hours before

Local storm report, Oct 16, 2:20 PM MST, 3 hours 28 minutes before

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Local storm report, Oct 16, 2:27 PM MST, 3 hours 21 minutes before

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Local storm report, Oct 16, 2:38 PM MST, 3 hours 10 minutes before

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Local storm report, Oct 16, 2:40 PM MST, 3 hours 8 minutes before

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Special weather statement, Oct 16, 3:33 PM MST, 2 hours 15 minutes before

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Special weather statement, Oct 16, 5:48 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
Oct 16, 8:01 PM MST	Special Weather Statement	PSR	La Paz	44 min
Oct 16, 8:14 PM MST	Special Weather Statement	PSR	Yuma	46 min
Oct 16, 8:59 PM MST	Special Weather Statement	PSR	Riverside	31 min

Nearby

Special Weather Statements in Arizona, 2015 Every special weather statement in 2015

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.