Alert archive / Tennessee / Special Weather Statements in 2016

Special Weather Statement, NWS Nashville, TN

July 4, 2016Macon County, Trousdale County, Tennessee

NWS Nashville, TN issued this special weather statement at Jul 4, 2016, 5:00 PM CDT for Macon County, Trousdale County, Tennessee. It was in force for 45 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: Jul 4, 2016, 5:00 PM CDT (22:00 UTC)
Expired: Jul 4, 2016, 5:45 PM CDT
In force: 45 min
Issued by: NWS Nashville, TN

Counties Macon County, TN, Trousdale County, TN

The radar

The Nashville radar (KOHX), 53 km from the middle of the area, began a volume at 22:00 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, 10.0 hours before the alert went out and 63 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: 797 J/kg
Mixed-layer CIN: -50 J/kg
Mixed-layer LCL: 1101 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 115 m²/s²
0-3 km storm-relative helicity: 105 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 1.5

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 Jul 4, 4:32 PM CDT, 28 minutes earlier.

Area forecast discussion, Jul 4, 4:32 PM CDT, 28 minutes before

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Hazardous weather outlook, Jul 4, 5:04 AM CDT, 11 hours 56 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NASHVILLE TN
504 AM CDT MON JUL 4 2016

TNZ005>011-051030-
STEWART-MONTGOMERY-ROBERTSON-SUMNER-MACON-CLAY-PICKETT-
504 AM CDT MON JUL 4 2016

...FLASH FLOOD WATCH FOR EXTREME NORTHERN MIDDLE TENNESSEE THROUGH
7 AM CDT TUESDAY...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF MIDDLE
TENNESSEE.

.DAY ONE...TODAY AND TONIGHT

THUNDERSTORMS BECOMING WIDESPREAD ACROSS THE EXTREME NORTH...
ESPECIALLY THIS AFTERNOON AND EVENING. A FEW STORMS MAY BE SEVERE
WITH DAMAGING WINDS AND LARGE HAIL. IN ADDITION...HEAVY DOWNPOURS
MAY PRODUCE FLASH FLOODING OF LOW LYING AND POORLY DRAINED AREAS.
A FLASH FLOOD WATCH IS POSTED FOR ALL OF EXTREME NORTHERN MIDDLE
TENNESSEE UNTIL 7 AM TUESDAY... INCLUDING ALL COUNTIES THAT BORDER
KENTUCKY.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

THE PROBABILITY OF WIDESPREAD HAZARDOUS WEATHER IS LOW.

.SPOTTER INFORMATION STATEMENT...SPOTTERS ARE ENCOURAGED TO PASS
ALONG ANY REPORTS OF FLASH FLOODING, WIND DAMAGE OR LARGE HAIL TO
THE NATIONAL WEATHER SERVICE.

TNZ023>034-056>066-075-077>080-093>095-051030-
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-
504 AM CDT MON JUL 4 2016

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF MIDDLE
TENNESSEE.

.DAY ONE...TODAY AND TONIGHT

THUNDERSTORMS DEVELOPING AND INCREASING IN COVERAGE...ESPECIALLY
THIS AFTERNOON AND EVENING. A FEW STORMS MAY BE SEVERE WITH
DAMAGING WINDS AND LARGE HAIL. IN ADDITION...HEAVY DOWNPOURS MAY
PRODUCE BRIEF PONDING OF WATER IN LOW LYING AND POORLY DRAINED
AREAS.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

THE PROBABILITY OF WIDESPREAD HAZARDOUS WEATHER IS LOW.

.SPOTTER INFORMATION STATEMENT...SPOTTERS ARE ENCOURAGED TO PASS
ALONG ANY REPORTS OF FLASH FLOODING, WIND DAMAGE OR LARGE HAIL TO
THE NATIONAL WEATHER SERVICE.

19

In the hours before

Special weather statement, Jul 4, 4:41 PM CDT, 19 minutes before

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Local storm report, Jul 4, 4:43 PM CDT, 17 minutes before

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Special weather statement, Jul 4, 4:56 PM CDT, 4 minutes before

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Local storm report, Jul 4, 4:57 PM CDT, 3 minutes before

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Local storm report, Jul 4, 5:00 PM CDT, 0 minutes before

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Special weather statement, Jul 4, 5:00 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
Jul 3, 7:04 PM CDT	Special Weather Statement	OHX	Stewart	41 min
Jul 3, 7:10 PM CDT	Severe Thunderstorm Warning	OHX	Stewart	32 min
Jul 3, 11:46 PM CDT	Areal Flood Advisory	OHX	Stewart	119 min
Jul 4, 3:15 AM CDT	Flash Flood Watch	OHX	Clay, Macon, Montgomery, Pickett, Robertson, Stewart and 1 more	23 hr
Jul 4, 2:20 PM CDT	Special Weather Statement	OHX	Davidson	25 min
Jul 4, 2:42 PM CDT	Severe Thunderstorm Warning	OHX	Macon, Smith, Sumner, Trousdale, Wilson	33 min
Jul 4, 3:08 PM CDT	Severe Thunderstorm Warning	OHX	Jackson, Macon, Smith, Wilson	37 min
Jul 4, 3:11 PM CDT	Severe Thunderstorm Warning	OHX	Clay, Macon, Smith, Sumner, Trousdale	34 min
Jul 4, 3:18 PM CDT	Special Weather Statement	OHX	Davidson, Sumner	42 min
Jul 4, 3:22 PM CDT	Severe Thunderstorm Warning	OHX	Clay, Jackson, Macon, Pickett	23 min
Jul 4, 3:40 PM CDT	Severe Thunderstorm Warning	OHX	Clay, Jackson, Macon, Pickett	35 min
Jul 4, 3:47 PM CDT	Severe Thunderstorm Warning	OHX	Clay, Jackson, Overton, Putnam	28 min
Jul 4, 4:01 PM CDT	Severe Thunderstorm Warning	OHX	Clay, Fentress, Overton, Pickett	59 min
Jul 4, 4:25 PM CDT	Special Weather Statement	OHX	Montgomery	50 min
Jul 4, 4:36 PM CDT	Special Weather Statement	OHX	Sumner	24 min
Jul 4, 4:41 PM CDT	Special Weather Statement	OHX	Williamson	34 min
Jul 4, 4:56 PM CDT	Special Weather Statement	OHX	Fentress	34 min
Jul 4, 5:11 PM CDT	Special Weather Statement	OHX	Rutherford	34 min
Jul 4, 6:16 PM CDT	Special Weather Statement	OHX	Davidson	44 min
Jul 4, 6:58 PM CDT	Special Weather Statement	OHX	Davidson	32 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.