Alert archive / Tennessee / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 120, NWS Nashville, TN

June 21, 2020Fentress County, Pickett County, Tennessee

NWS Nashville, TN issued this severe thunderstorm warning at Jun 21, 2020, 12:46 PM CDT for Fentress County, Pickett County, Tennessee. It was in force for 14 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jun 21, 2020, 12:46 PM CDT (17:46 UTC)
Expired: Jun 21, 2020, 1:00 PM CDT
In force: 14 min
Issued by: NWS Nashville, TN
Area: Storm-based polygon
Tornado: Possible
Hail: 0.75 in
Wind: 50.0 mph

Counties Fentress County, TN, Pickett County, TN

The radar

The Nashville radar (KOHX), 142 km from the middle of the area, began a volume at 17:50 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

Cncnati-Daytn, OH (KILN), launched 12:00Z, 5.8 hours before the alert went out and 346 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: 26 J/kg
Mixed-layer CIN: -76 J/kg
Mixed-layer LCL: 1659 m above ground
0-6 km bulk shear: 13 kt
0-1 km storm-relative helicity: 14 m²/s²
0-3 km storm-relative helicity: 27 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning 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 severe thunderstorm warning went out at Jun 21, 11:33 AM CDT, 1 hour 13 minutes earlier.

Area forecast discussion, Jun 21, 11:33 AM CDT, 1 hour 13 minutes before

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Hazardous weather outlook, Jun 21, 10:36 AM CDT, 2 hours 10 minutes before

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In the hours before

Special weather statement, Jun 21, 10:41 AM CDT, 2 hours 5 minutes before

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Special weather statement, Jun 21, 11:11 AM CDT, 1 hour 35 minutes before

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Special weather statement, Jun 21, 11:12 AM CDT, 1 hour 34 minutes before

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Special weather statement, Jun 21, 11:32 AM CDT, 1 hour 14 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 21, 10:41 AM CDT	Special Weather Statement	OHX	Fentress	19 min
Jun 21, 11:11 AM CDT	Special Weather Statement	OHX	Cumberland	19 min
Jun 21, 11:12 AM CDT	Special Weather Statement	OHX	Fentress, Pickett	18 min
Jun 21, 11:32 AM CDT	Special Weather Statement	OHX	Cumberland, Fentress, Pickett	43 min
Jun 21, 1:11 PM CDT	Special Weather Statement	OHX	Rutherford	34 min
Jun 21, 3:32 PM CDT	Areal Flood Advisory	OHX	Jackson, Putnam	3 hr
Jun 21, 3:53 PM CDT	Special Weather Statement	OHX	Bedford	37 min
Jun 21, 4:25 PM CDT	Special Weather Statement	OHX	Cumberland, Fentress, Pickett	50 min
Jun 21, 5:01 PM CDT	Areal Flood Advisory	OHX	Fentress, Overton, Pickett	3 hr

Nearby

Severe Thunderstorm Warnings in Tennessee, 2020 Every severe thunderstorm warning in 2020

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.