Alert archive / Tennessee / Special Weather Statements in 2016

Special Weather Statement, NWS Morristown, TN

August 21, 2016Washington County, Tennessee

NWS Morristown, TN issued this special weather statement at Aug 21, 2016, 11:49 AM EDT for Washington County, Tennessee. It was in force for 41 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 21, 2016, 11:49 AM EDT (15:49 UTC)
Expired: Aug 21, 2016, 12:30 PM EDT
In force: 41 min
Issued by: NWS Morristown, TN

County Washington County, TN

The radar

The Knoxville radar (KMRX), 91 km from the middle of the area, began a volume at 15:52 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

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 3.8 hours before the alert went out and 230 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: 418 J/kg
Mixed-layer CIN: -54 J/kg
Mixed-layer LCL: 852 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 16 m²/s²
0-3 km storm-relative helicity: 95 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

As transmitted.

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The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 20, 8:03 PM EDT	Special Weather Statement	MRX	Sullivan	42 min
Aug 20, 8:54 PM EDT	Special Weather Statement	MRX	Grainger, Hamblen	51 min
Aug 21, 12:37 PM EDT	Special Weather Statement	MRX	Johnson	38 min

Nearby

Special Weather Statements in Tennessee, 2016 Every special weather statement in 2016

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.