Alert archive / Tennessee / Special Weather Statements in 2015

Special Weather Statement, NWS Nashville, TN

September 9, 2015Macon County, Tennessee

NWS Nashville, TN issued this special weather statement at Sep 9, 2015, 2:49 PM CDT for Macon County, Tennessee. It was in force for 26 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: Sep 9, 2015, 2:49 PM CDT (19:49 UTC)
Expired: Sep 9, 2015, 3:15 PM CDT
In force: 26 min
Issued by: NWS Nashville, TN

County Macon County, TN

The radar

The Nashville radar (KOHX), 50 km from the middle of the area, began a volume at 19:52 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, 7.8 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: 358 J/kg
Mixed-layer CIN: -42 J/kg
Mixed-layer LCL: 916 m above ground
0-6 km bulk shear: 11 kt
0-1 km storm-relative helicity: 15 m²/s²
0-3 km storm-relative helicity: 40 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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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 Sep 9, 12:30 PM CDT, 2 hours 19 minutes earlier.

Area forecast discussion, Sep 9, 12:30 PM CDT, 2 hours 19 minutes before

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Hazardous weather outlook, Sep 9, 5:00 AM CDT, 9 hours 49 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NASHVILLE TN
500 AM CDT WED SEP 9 2015

TNZ005>011-023>034-056>066-075-077>080-093>095-101000-
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-
500 AM CDT WED SEP 9 2015

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF MIDDLE
TENNESSEE.

.DAY ONE...TODAY AND TONIGHT

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED.

55

In the hours before

Special weather statement, Sep 9, 2:23 PM CDT, 26 minutes before

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Special weather statement, Sep 9, 2:35 PM CDT, 14 minutes before

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Special weather statement, Sep 9, 2:49 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
Sep 9, 1:48 PM CDT	Flash Flood Warning	OHX	Lawrence	3 hr
Sep 9, 2:23 PM CDT	Special Weather Statement	OHX	Williamson	37 min
Sep 9, 2:35 PM CDT	Special Weather Statement	OHX	Humphreys	25 min
Sep 9, 3:23 PM CDT	Special Weather Statement	OHX	Wilson	52 min
Sep 9, 3:32 PM CDT	Special Weather Statement	OHX	Davidson	43 min
Sep 9, 3:51 PM CDT	Special Weather Statement	OHX	Perry	24 min
Sep 9, 3:58 PM CDT	Special Weather Statement	OHX	Wayne	47 min
Sep 9, 4:11 PM CDT	Areal Flood Advisory	OHX	Macon, Sumner, Trousdale	2 hr
Sep 9, 4:36 PM CDT	Special Weather Statement	OHX	Wilson	24 min
Sep 9, 4:43 PM CDT	Special Weather Statement	OHX	Cheatham, Davidson, Dickson, Hickman, Lewis, Maury and 3 more	62 min
Sep 9, 4:50 PM CDT	Flash Flood Warning	OHX	Lawrence, Lewis, Maury	115 min
Sep 9, 4:55 PM CDT	Special Weather Statement	OHX	Cheatham, Davidson, Dickson, Hickman, Lewis, Maury and 3 more	50 min
Sep 9, 5:17 PM CDT	Areal Flood Advisory	OHX	Montgomery, Robertson	58 min
Sep 9, 6:10 PM CDT	Areal Flood Advisory	OHX	Davidson, Williamson	50 min

Nearby

Special Weather Statements in Tennessee, 2015 Every special weather statement in 2015

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.