Alert archive / Tennessee / Special Weather Statements in 2017

Special Weather Statement, NWS Nashville, TN

April 17, 2017Cumberland County, Tennessee

NWS Nashville, TN issued this special weather statement at Apr 17, 2017, 5:27 PM CDT for Cumberland County, Tennessee. It was in force for 18 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 17, 2017, 5:27 PM CDT (22:27 UTC)
Expired: Apr 17, 2017, 5:45 PM CDT
In force: 18 min
Issued by: NWS Nashville, TN

County Cumberland County, TN

The radar

The Knoxville radar (KMRX), 127 km from the middle of the area, began a volume at 22:26 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, 10.5 hours before the alert went out and 167 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: 110 J/kg
Mixed-layer CIN: -66 J/kg
Mixed-layer LCL: 867 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 81 m²/s²
0-3 km storm-relative helicity: 87 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 17, 3:51 PM CDT, 1 hour 36 minutes earlier.

Area forecast discussion, Apr 17, 3:51 PM CDT, 1 hour 36 minutes before

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Hazardous weather outlook, Apr 17, 3:57 PM CDT, 1 hour 30 minutes before

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In the hours before

Special weather statement, Apr 17, 1:11 PM CDT, 4 hours 16 minutes before

Special Weather Statement
National Weather Service Nashville TN
111 PM CDT MON APR 17 2017

TNZ025-171845-
Dickson TN-
111 PM CDT MON APR 17 2017

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN DICKSON COUNTY UNTIL
145 PM CDT...

At 111 PM CDT, Doppler radar was tracking a strong thunderstorm near
Tennessee City, moving east at 10 mph.

Pea size hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
Dickson, Burns and Charlotte.

LAT...LON 3600 8753 3617 8755 3618 8726 3597 8727
TIME...MOT...LOC 1811Z 279DEG 7KT 3608 8749

Shamburger

Special weather statement, Apr 17, 1:56 PM CDT, 3 hours 31 minutes before

Special Weather Statement
National Weather Service Nashville TN
156 PM CDT MON APR 17 2017

TNZ064-171930-
De Kalb TN-
156 PM CDT MON APR 17 2017

...SIGNIFICANT WEATHER ADVISORY FOR EAST CENTRAL DE KALB COUNTY UNTIL
230 PM CDT...

At 156 PM CDT, Doppler radar was tracking a strong thunderstorm over
Smithville, moving east at 5 mph.

Pea size hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
Smithville.

LAT...LON 3602 8566 3601 8565 3601 8564 3597 8566
      3592 8566 3590 8565 3592 8588 3603 8587
TIME...MOT...LOC 1856Z 278DEG 5KT 3597 8579

Shamburger

Special weather statement, Apr 17, 2:21 PM CDT, 3 hours 6 minutes before

Special Weather Statement
National Weather Service Nashville TN
221 PM CDT MON APR 17 2017

TNZ032-064-171945-
Putnam TN-De Kalb TN-
221 PM CDT MON APR 17 2017

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN DE KALB AND
SOUTHWESTERN PUTNAM COUNTIES UNTIL 245 PM CDT...

At 221 PM CDT, Doppler radar was tracking a strong thunderstorm 7
miles north of Smithville, or over Center Hill Lake, moving east at
20 mph.

Half inch hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
Smithville, Baxter, Center Hill Lake and Edgar Evans State Park.

LAT...LON 3614 8560 3590 8569 3602 8592 3610 8589
      3609 8587 3611 8585 3612 8585 3612 8584
      3613 8584 3612 8583 3613 8581 3616 8580
TIME...MOT...LOC 1921Z 285DEG 16KT 3607 8581

Shamburger

Special weather statement, Apr 17, 3:24 PM CDT, 2 hours 3 minutes before

Special Weather Statement
National Weather Service Nashville TN
324 PM CDT MON APR 17 2017

TNZ057-172100-
Hickman TN-
324 PM CDT MON APR 17 2017

...SIGNIFICANT WEATHER ADVISORY FOR EASTERN HICKMAN COUNTY UNTIL 400
PM CDT...

At 323 PM CDT, Doppler radar was tracking a strong thunderstorm near
Centerville, moving east at 10 mph. Another strong thunderstorm was
located near Bon Aqua, moving east at 10 mph.

Half inch hail and winds in excess of 40 mph will be possible with
these storms

Locations impacted include...
Centerville, Primm Springs, Lyles and Nunnelly.

LAT...LON 3594 8747 3596 8721 3573 8723 3572 8727
      3570 8730 3566 8733 3566 8747
TIME...MOT...LOC 2023Z 268DEG 9KT 3579 8737

Shamburger

Special weather statement, Apr 17, 3:49 PM CDT, 1 hour 38 minutes before

Special Weather Statement
National Weather Service Nashville TN
349 PM CDT MON APR 17 2017

TNZ025-026-057-059-172115-
Hickman TN-Williamson TN-Dickson TN-Cheatham TN-
349 PM CDT MON APR 17 2017

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN DICKSON...
NORTHWESTERN WILLIAMSON...SOUTH CENTRAL CHEATHAM AND NORTHEASTERN
HICKMAN COUNTIES UNTIL 415 PM CDT...

At 348 PM CDT, Doppler radar was tracking a strong thunderstorm 7
miles southeast of Burns, or 11 miles southeast of Dickson, moving
east at 10 mph.

Pea size hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
Dickson, Kingston Springs, Pegram, Burns, Fairview and Bon Aqua.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

&&

LAT...LON 3588 8706 3589 8732 3603 8734 3611 8705
TIME...MOT...LOC 2048Z 249DEG 9KT 3598 8721

Shamburger

Special weather statement, Apr 17, 5:27 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 17, 12:38 PM CDT	Special Weather Statement	OHX	Rutherford	37 min
Apr 17, 12:48 PM CDT	Special Weather Statement	OHX	Van Buren	27 min
Apr 17, 1:11 PM CDT	Special Weather Statement	OHX	Dickson	34 min
Apr 17, 1:56 PM CDT	Special Weather Statement	OHX	DeKalb	34 min
Apr 17, 2:21 PM CDT	Special Weather Statement	OHX	DeKalb	24 min
Apr 17, 3:24 PM CDT	Special Weather Statement	OHX	Hickman	36 min
Apr 17, 3:49 PM CDT	Special Weather Statement	OHX	Dickson	26 min
Apr 17, 3:58 PM CDT	Areal Flood Advisory	OHX	Hickman	2 hr
Apr 17, 4:34 PM CDT	Flash Flood Warning	OHX	Dickson, Hickman, Williamson	116 min
Apr 17, 6:01 PM CDT	Flash Flood Warning	OHX	Williamson	89 min
Apr 17, 6:21 PM CDT	Areal Flood Advisory	OHX	Rutherford	54 min
Apr 17, 6:29 PM CDT	Special Weather Statement	OHX	Cannon	31 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.