Alert archive / Tennessee / Special Weather Statements in 2020

Special Weather Statement, NWS Nashville, TN

April 8, 20204 counties in Tennessee

NWS Nashville, TN issued this special weather statement at Apr 8, 2020, 11:09 PM CDT for 4 counties in Tennessee. It was in force for 51 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: Apr 8, 2020, 11:09 PM CDT (04:09 UTC)
Expired: Apr 9, 2020, 12:00 AM CDT
In force: 51 min
Issued by: NWS Nashville, TN

Counties Cannon County, TN, Van Buren County, TN, Warren County, TN, White County, TN

The radar

The Northeast Alabama radar (KHTX), 116 km from the middle of the area, began a volume at 04:10 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 00:00Z, 4.2 hours before the alert went out and 120 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: 990 J/kg
Mixed-layer CIN: -46 J/kg
Mixed-layer LCL: 1332 m above ground
0-6 km bulk shear: 57 kt
0-1 km storm-relative helicity: 75 m²/s²
0-3 km storm-relative helicity: 124 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.2

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 Apr 8, 10:59 PM CDT, 10 minutes earlier.

Area forecast discussion, Apr 8, 10:59 PM CDT, 10 minutes before

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Hazardous weather outlook, Apr 8, 5:03 AM CDT, 18 hours 6 minutes before

Hazardous Weather Outlook
National Weather Service Nashville TN
503 AM CDT Wed Apr 8 2020

TNZ005>011-023>034-056>066-075-077>080-093>095-091015-
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-
503 AM CDT Wed Apr 8 2020

This Hazardous Weather Outlook is for portions of Middle Tennessee.

.DAY ONE...Today and Tonight.

Severe thunderstorms are likely for all of Middle TN between 9 pm
and 3 am tonight. All modes of severe weather are possible, including
damaging winds of 60-75 mph, golf ball sized hail or larger, and
even an isolated tornado. Please remain weather aware tonight.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will likely be needed. Please relay any
information about observed severe weather to the NWS while following
all local, state, and CDC guidelines.

27

In the hours before

Local storm report, Apr 8, 10:43 PM CDT, 26 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE TN
1043 PM CDT WED APR 08 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1006 PM     TSTM WND DMG     2 ESE GALLATIN          36.37N  86.42W
04/08/2020                   SUMNER             TN   SOCIAL MEDIA

            REPORT OF POWER POLE SNAPPED IN HALF AND A COUPLE OF
            TREES DOWN AROUND COLES FERRY ROAD, DRIVERS LANE. TIME
            ESTIMATED VIA RADAR.

&&

EVENT NUMBER OHX2000297

FB

Special weather statement, Apr 8, 10:45 PM CDT, 24 minutes before

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Local storm report, Apr 8, 10:52 PM CDT, 17 minutes before

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Special weather statement, Apr 8, 10:56 PM CDT, 13 minutes before

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Local storm report, Apr 8, 11:03 PM CDT, 6 minutes before

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Special weather statement, Apr 8, 11:09 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
Apr 8, 8:13 PM CDT	Severe Thunderstorm Warning	OHX	Houston, Montgomery, Stewart	47 min
Apr 8, 8:57 PM CDT	Severe Thunderstorm Warning	OHX	Dickson, Houston, Montgomery, Robertson, Stewart	33 min
Apr 8, 9:11 PM CDT	Severe Thunderstorm Warning	OHX	Houston, Humphreys, Stewart	34 min
Apr 8, 9:17 PM CDT	Severe Thunderstorm Warning	OHX	Cheatham, Davidson, Dickson, Montgomery, Robertson	28 min
Apr 8, 9:36 PM CDT	Severe Thunderstorm Warning	OHX	Davidson, Macon, Robertson, Sumner, Wilson	39 min
Apr 8, 9:41 PM CDT	Severe Thunderstorm Warning	OHX	Cheatham, Davidson, Dickson, Williamson, Wilson	34 min
Apr 8, 9:46 PM CDT	Special Weather Statement	OHX	Humphreys	44 min
Apr 8, 10:09 PM CDT	Severe Thunderstorm Warning	OHX	DeKalb, Jackson, Macon, Smith, Sumner, Trousdale and 1 more	36 min
Apr 8, 10:14 PM CDT	Severe Thunderstorm Warning	OHX	Davidson, Rutherford, Wilson	46 min
Apr 8, 10:17 PM CDT	Special Weather Statement	OHX	Hickman, Williamson	43 min
Apr 8, 10:43 PM CDT	Severe Thunderstorm Warning	OHX	Cannon, DeKalb, Rutherford, Smith, Warren, Wilson	47 min
Apr 8, 10:45 PM CDT	Special Weather Statement	OHX	Jackson, Overton, Putnam, White	45 min
Apr 8, 10:56 PM CDT	Special Weather Statement	OHX	Williamson	49 min
Apr 8, 11:16 PM CDT	Special Weather Statement	OHX	Bedford, Coffee	44 min
Apr 8, 11:52 PM CDT	Special Weather Statement	OHX	Bedford, Coffee, Grundy, Warren	38 min
Apr 8, 11:54 PM CDT	Special Weather Statement	OHX	Cumberland	21 min
Apr 9, 2:07 PM CDT	Freeze Watch	OHX	Clay, Cumberland, DeKalb, Fentress, Grundy, Jackson and 6 more	20 hr

Nearby

Special Weather Statements in Tennessee, 2020 Every special weather statement 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.