Alert archive / Tennessee / Special Weather Statements in 2012

Special Weather Statement, NWS Nashville, TN

July 17, 2012Wayne County, Tennessee

NWS Nashville, TN issued this special weather statement at Jul 17, 2012, 5:49 PM CDT for Wayne County, Tennessee. It was in force for 26 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 17, 2012, 5:49 PM CDT (22:49 UTC)
Expired: Jul 17, 2012, 6:15 PM CDT
In force: 26 min
Issued by: NWS Nashville, TN

County Wayne County, TN

The radar

The Columbus AFB radar (KGWX), 139 km from the middle of the area, began a volume at 22:50 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

Nashville Metro, TN (KBNA), launched 12:00Z, 10.8 hours before the alert went out and 160 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: 1991 J/kg
Mixed-layer CIN: -52 J/kg
Mixed-layer LCL: 905 m above ground
0-6 km bulk shear: 5 kt
0-1 km storm-relative helicity: -41 m²/s²
0-3 km storm-relative helicity: -27 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.3

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 Nashville, TN wrote its last area forecast discussion before this special weather statement went out at Jul 17, 3:37 PM CDT, 2 hours 12 minutes earlier.

Area forecast discussion, Jul 17, 3:37 PM CDT, 2 hours 12 minutes before

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Hazardous weather outlook, Jul 17, 5:38 AM CDT, 12 hours 11 minutes before

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In the hours before

Special weather statement, Jul 17, 3:48 PM CDT, 2 hours 1 minute before

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Special weather statement, Jul 17, 5:49 PM CDT, 0 minutes before

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The office that day

Everything else NWS Nashville, TN issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 16, 7:13 PM CDT	Severe Thunderstorm Warning	OHX	Giles	21 min
Jul 16, 7:21 PM CDT	Special Weather Statement	OHX	Cannon	39 min
Jul 16, 8:59 PM CDT	Special Weather Statement	OHX	Cannon	2 hr
Jul 16, 9:01 PM CDT	Severe Thunderstorm Warning	OHX	DeKalb	29 min
Jul 16, 9:12 PM CDT	Areal Flood Advisory	OHX	Cannon, Warren	63 min

Nearby

Special Weather Statements in Tennessee, 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; radar from the NEXRAD Level II archive.