Alert archive / Tennessee / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 228, NWS Nashville, TN

June 17, 2009Montgomery County, Stewart County, Tennessee

NWS Nashville, TN issued this severe thunderstorm warning at Jun 17, 2009, 11:13 PM CDT for Montgomery County, Stewart County, Tennessee. It was in force for 32 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 17, 2009, 11:13 PM CDT (04:13 UTC)
Expired: Jun 17, 2009, 11:45 PM CDT
In force: 32 min
Issued by: NWS Nashville, TN
Area: Storm-based polygon

Counties Montgomery County, TN, Stewart County, TN

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 00:00Z, 4.2 hours before the alert went out and 99 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: 3707 J/kg
Mixed-layer CIN: -23 J/kg
Mixed-layer LCL: 1041 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 37 m²/s²
0-3 km storm-relative helicity: 81 m²/s²
Significant tornado parameter: 1.1
Supercell composite: 5.8

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 17, 9:30 PM CDT, 1 hour 43 minutes earlier.

Area forecast discussion, Jun 17, 9:30 PM CDT, 1 hour 43 minutes before

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Hazardous weather outlook, Jun 17, 5:27 AM CDT, 17 hours 46 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NASHVILLE TN
527 AM CDT WED JUN 17 2009

TNZ005>011-022>034-056>066-075-077>080-093>095-181030-
STEWART-MONTGOMERY-ROBERTSON-SUMNER-MACON-CLAY-PICKETT-BENTON-
HOUSTON-HUMPHREYS-DICKSON-CHEATHAM-DAVIDSON-WILSON-TROUSDALE-
SMITH-JACKSON-PUTNAM-OVERTON-FENTRESS-PERRY-HICKMAN-LEWIS-
WILLIAMSON-MAURY-MARSHALL-RUTHERFORD-CANNON-DEKALB-WHITE-
CUMBERLAND-BEDFORD-COFFEE-WARREN-GRUNDY-VAN BUREN-WAYNE-LAWRENCE-
GILES-
527 AM CDT WED JUN 17 2009

THIS HAZARDOUS WEATHER OUTLOOK IS FOR MIDDLE TENNESSEE.

.DAY ONE...TODAY AND TONIGHT

YET ANOTHER THUNDERSTORM COMPLEX COULD POSSIBLY MOVE SOUTHEAST INTO
MIDDLE TENNESSEE TODAY. IF SO...A FEW STORMS WILL PRODUCE DAMAGING
WINDS AND HAIL.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

DUE TO THE BRIEF AND ISOLATED NATURE OF POSSIBLE SEVERE WEATHER...
SPOTTER ACTIVATION IS NOT ANTICIPATED.

17/MAG

In the hours before

Local storm report, Jun 17, 7:10 PM CDT, 4 hours 3 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE TN
710 PM CDT WED JUN 17 2009

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

0709 PM     FUNNEL CLOUD     6 SW SPRINGFIELD        36.44N 86.96W
06/17/2009                   ROBERTSON          TN   TRAINED SPOTTER

            AT COOPERTOWN

&&

SHERRON

Local storm report, Jun 17, 7:31 PM CDT, 3 hours 42 minutes before

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Local storm report, Jun 17, 7:35 PM CDT, 3 hours 38 minutes before

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Local storm report, Jun 17, 8:19 PM CDT, 2 hours 54 minutes before

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Local storm report, Jun 17, 8:28 PM CDT, 2 hours 45 minutes before

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Local storm report, Jun 17, 10:00 PM CDT, 1 hour 13 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 17, 7:12 PM CDT	Tornado Warning	OHX	Davidson, Robertson, Sumner	33 min
Jun 17, 7:19 PM CDT	Tornado Warning	OHX	Montgomery, Robertson	26 min
Jun 17, 7:46 PM CDT	Tornado Warning	OHX	Cheatham, Montgomery, Robertson	29 min
Jun 17, 8:09 PM CDT	Severe Thunderstorm Warning	OHX	Montgomery	36 min
Jun 17, 8:17 PM CDT	Severe Thunderstorm Warning	OHX	Cheatham, Davidson, Dickson, Montgomery, Williamson	28 min
Jun 17, 8:46 PM CDT	Severe Thunderstorm Warning	OHX	Cheatham, Dickson, Montgomery	12 min
Jun 17, 10:11 PM CDT	Severe Thunderstorm Warning	OHX	Stewart	34 min
Jun 18, 12:00 AM CDT	Areal Flood Advisory	OHX	Stewart	3 hr
Jun 18, 12:01 PM CDT	Severe Thunderstorm Warning	OHX	Fentress, Pickett	29 min
Jun 18, 12:15 PM CDT	Severe Thunderstorm Warning	OHX	Clay, Fentress, Overton, Pickett	30 min

Nearby

Severe Thunderstorm Warnings in Tennessee, 2009 Every severe thunderstorm warning in 2009

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.