Alert archive / Arizona / Special Weather Statements in 2018

Special Weather Statement, NWS Tucson, AZ

October 13, 2018Pinal County, Arizona

NWS Tucson, AZ issued this special weather statement at Oct 13, 2018, 7:26 AM MST for Pinal County, Arizona. It was in force for 64 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 13, 2018, 7:26 AM MST (14:26 UTC)
Expired: Oct 13, 2018, 8:30 AM MST
In force: 64 min
Issued by: NWS Tucson, AZ

County Pinal County, AZ

The radar

The Phoenix radar (KIWA), 56 km from the middle of the area, began a volume at 14:28 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, 2.4 hours before the alert went out and 94 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: 8 J/kg
Mixed-layer CIN: -28 J/kg
Mixed-layer LCL: 900 m above ground
0-6 km bulk shear: 65 kt
0-1 km storm-relative helicity: 112 m²/s²
0-3 km storm-relative helicity: 107 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

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The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 13, 10:21 AM MST	Areal Flood Advisory	TWC	Pinal	3 hr
Oct 13, 2:31 PM MST	Areal Flood Advisory	TWC	Pima	3 hr
Oct 13, 3:58 PM MST	Areal Flood Advisory	TWC	Pinal	2 hr

Nearby

Special Weather Statements in Arizona, 2018 Every special weather statement in 2018

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.