Alert archive / Tennessee / Special Weather Statements in 2017

Special Weather Statement, NWS Nashville, TN

June 23, 2017Overton County, Pickett County, Tennessee

NWS Nashville, TN issued this special weather statement at Jun 23, 2017, 4:44 PM CDT for Overton County, Pickett County, Tennessee. It was in force for 46 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: Jun 23, 2017, 4:44 PM CDT (21:44 UTC)
Expired: Jun 23, 2017, 5:30 PM CDT
In force: 46 min
Issued by: NWS Nashville, TN

Counties Overton County, TN, Pickett County, TN

The radar

The Nashville radar (KOHX), 141 km from the middle of the area, began a volume at 21:46 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, 9.7 hours before the alert went out and 147 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: 449 J/kg
Mixed-layer CIN: -4 J/kg
Mixed-layer LCL: 660 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 232 m²/s²
0-3 km storm-relative helicity: 224 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 3.1

Open this sounding in Storm Lab

The text

As transmitted.

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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 Jun 23, 4:10 PM CDT, 34 minutes earlier.

Area forecast discussion, Jun 23, 4:10 PM CDT, 34 minutes before

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Hazardous weather outlook, Jun 23, 4:57 AM CDT, 11 hours 47 minutes before

Hazardous Weather Outlook
National Weather Service Nashville TN
457 AM CDT Fri Jun 23 2017

TNZ005>011-023>034-056>066-075-077>080-093>095-241000-
Stewart-Montgomery-Robertson-Sumner-Macon-Clay-Pickett-Houston-
Humphreys-Dickson-Cheatham-Davidson-Wilson-Trousdale-Smith-
Jackson-Putnam-Overton-Fentress-Perry-Hickman-Lewis-Williamson-
Maury-Marshall-Rutherford-Cannon-De Kalb-White-Cumberland-Bedford-
Coffee-Warren-Grundy-Van Buren-Wayne-Lawrence-Giles-
457 AM CDT Fri Jun 23 2017

This Hazardous Weather Outlook is for portions of Middle
Tennessee.

.DAY ONE...Today and Tonight.

The remnants of Tropical Storm Cindy will bring heavy rainfall to
the mid-state today. A Flash Flood Watch is in effect until 7 am
Saturday morning for areas generally along and north of I-40,
including all of the Nashville Metro area. 1.5 to 2.5 inches of
rainfall is expected, but locally higher amounts are possible.

In addition to the heavy rainfall, severe weather is also a
possibility for all of Middle Tennessee today. While damaging
straight line winds will be the main threat, isolated tornadoes
cannot be ruled out this afternoon and this evening.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

Rises on area rivers and creeks will be possible Sunday and Monday
as rains from the remnants of Tropical Storm Cindy run off. Minor
flooding will be possible.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is requested for this afternoon and this
evening.

Spotter Thunderstorm Reporting Criteria
Tornado
Funnel Cloud
Flooding
Hail >= 1/2 inch
Winds > 50 MPH (Measured)
Structural Damage
Trees or Power Lines Down

27

In the hours before

Special weather statement, Jun 23, 2:18 PM CDT, 2 hours 26 minutes before

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Special weather statement, Jun 23, 2:46 PM CDT, 1 hour 58 minutes before

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Special weather statement, Jun 23, 3:08 PM CDT, 1 hour 36 minutes before

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Special weather statement, Jun 23, 3:15 PM CDT, 1 hour 29 minutes before

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Special weather statement, Jun 23, 4:12 PM CDT, 32 minutes before

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Special weather statement, Jun 23, 4:44 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
Jun 23, 1:47 PM CDT	Special Weather Statement	OHX	Williamson	28 min
Jun 23, 2:18 PM CDT	Special Weather Statement	OHX	Bedford	27 min
Jun 23, 2:46 PM CDT	Special Weather Statement	OHX	Bedford, Cannon	29 min
Jun 23, 3:08 PM CDT	Special Weather Statement	OHX	Coffee	52 min
Jun 23, 3:15 PM CDT	Special Weather Statement	OHX	Cannon, DeKalb	30 min
Jun 23, 4:12 PM CDT	Special Weather Statement	OHX	Putnam	48 min

Nearby

Special Weather Statements in Tennessee, 2017 Every special weather statement in 2017

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.