Alert archive / Tennessee / Special Weather Statements in 2012

Special Weather Statement, NWS Nashville, TN

May 29, 2012Warren County, Tennessee

NWS Nashville, TN issued this special weather statement at May 29, 2012, 7:28 PM CDT for Warren 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 outline as issued.

The facts

Issued: May 29, 2012, 7:28 PM CDT (00:28 UTC)
Expired: May 29, 2012, 8:00 PM CDT
In force: 32 min
Issued by: NWS Nashville, TN

County Warren County, TN

The radar

The Northeast Alabama radar (KHTX), 88 km from the middle of the area, began a volume at 00:29 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, 0.5 hours before the alert went out and 94 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: 580 J/kg
Mixed-layer CIN: -52 J/kg
Mixed-layer LCL: 1358 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: -9 m²/s²
0-3 km storm-relative helicity: 53 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 May 29, 6:39 PM CDT, 49 minutes earlier.

Area forecast discussion, May 29, 6:39 PM CDT, 49 minutes before

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Hazardous weather outlook, May 29, 9:09 AM CDT, 10 hours 19 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NASHVILLE TN
909 AM CDT TUE MAY 29 2012

TNZ005>011-022>034-056>066-075-077>080-093>095-301415-
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-DE KALB-WHITE-
CUMBERLAND-BEDFORD-COFFEE-WARREN-GRUNDY-VAN BUREN-WAYNE-LAWRENCE-
GILES-
909 AM CDT TUE MAY 29 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR MIDDLE TENNESSEE.

.DAY ONE...TODAY AND TONIGHT

THUNDERSTORMS WILL DEVELOP ACROSS THE AREA TODAY AND TONIGHT AS A
COLD FRONT APPROACHES. SOME STRONG STORMS ARE EXPECTED...AND A FEW
MAY BECOME SEVERE. HEAVY DOWNPOURS...STRONG WIND GUSTS AND SMALL
HAIL WILL BE POSSIBLE. LOCALIZED FLOODING OF STREETS...SMALL
STREAMS AND LOW LYING AREAS MAY OCCUR.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY...

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS FOR MID TENNESSEE
THURSDAY AFTERNOON THROUGH THURSDAY NIGHT. AN USUALLY STRONG LOW
PRESSURE SYSTEM AND COLD FRONT WILL BRING THUNDERSTORMS WITH THE
POTENTIAL FOR DAMAGING WINDS...LARGE HAIL AND HEAVY DOWNPOURS.

.SPOTTER CALL TO ACTION STATEMENT...

REPORTS IF ISOLATED SEVERE STORMS MAY BE NEEDED TODAY THROUGH
THIS EVENING. ACTIVATION OF TRAINED SPOTTERS MAY BE NEEDED
THURSDAY AFTERNOON THROUGH THURSDAY NIGHT.

SPOTTER THUNDERSTORM REPORTING CRITERIA...
TORNADO
FUNNEL CLOUD
FLOODING
HAIL >= 1/2 INCH
WINDS > 50 MPH (MEASURED)
STRUCTURAL DAMAGE
TREES OR POWER LINES DOWN

13

In the hours before

Local storm report, May 29, 6:06 PM CDT, 1 hour 22 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE TN
606 PM CDT TUE MAY 29 2012

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

0525 PM     TSTM WND DMG     WAVERLY                 36.09N 87.79W
05/29/2012                   HUMPHREYS          TN   LAW ENFORCEMENT

            TRAIN TRACK GATE BLOWN DOWN IN WAVERLY. TREES DOWN
            THROUGHOUT WAVERLY.

&&

21

Local storm report, May 29, 6:09 PM CDT, 1 hour 19 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE TN
609 PM CDT TUE MAY 29 2012

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

0500 PM     TSTM WND DMG     7 NE CLARKSVILLE        36.63N 87.26W
05/29/2012                   MONTGOMERY         TN   TRAINED SPOTTER

            SEVERAL ONE FOOT TREES WERE DOWNED ALONG WITH SOME CORN
            FIELDS THAT WERE FLATTENED.

&&

31

Special weather statement, May 29, 6:17 PM CDT, 1 hour 11 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NASHVILLE TN
617 PM CDT TUE MAY 29 2012

TNZ059-292345-
WILLIAMSON-
617 PM CDT TUE MAY 29 2012

...SIGNIFICANT WEATHER ADVISORY FOR WILLIAMSON COUNTY...

AT 617 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM 7 MILES SOUTHEAST OF FAIRVIEW...OR 11 MILES WEST
OF FRANKLIN...MOVING SOUTHEAST AT 45 MPH.

SMALL HAIL...WINDS AROUND 50 MPH...AND BRIEF HEAVY DOWNPOURS ARE
EXPECTED WITH THIS STORM.

LAT...LON 3580 8662 3579 8666 3578 8666 3570 8675
      3577 8693 3578 8693 3577 8695 3578 8695
      3578 8696 3585 8717 3600 8702

31

Local storm report, May 29, 6:20 PM CDT, 1 hour 8 minutes before

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE NASHVILLE TN
620 PM CDT TUE MAY 29 2012

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

0500 PM     TSTM WND DMG     CLARKSVILLE             36.56N 87.35W
05/29/2012                   MONTGOMERY         TN   TRAINED SPOTTER

            TREES WERE DOWNED BEHIND THE TARGET SHOPPING CENTER OFF
            OF DUNLOP LANE.

0500 PM     TSTM WND DMG     7 NE CLARKSVILLE        36.63N 87.26W
05/29/2012                   MONTGOMERY         TN   TRAINED SPOTTER

            SEVERAL ONE FOOT TREES WERE DOWNED ALONG WITH SOME CORN
            FIELDS THAT WERE FLATTENED.

0505 PM     TSTM WND DMG     11 E CLARKSVILLE        36.56N 87.15W
05/29/2012                   MONTGOMERY         TN   LAW ENFORCEMENT

            ROOF BLOWN OFF A BUILDING IN PORT ROYAL.

0505 PM     TSTM WND DMG     10 E CLARKSVILLE        36.56N 87.17W
05/29/2012                   MONTGOMERY         TN   LAW ENFORCEMENT

            TREES BLOWN DOWN EAST OF CLARKSVILLE.

0506 PM     TSTM WND DMG     3 NW ADAMS              36.61N 87.10W
05/29/2012                   ROBERTSON          TN   TRAINED SPOTTER

            TREES SNAPPED AND SMALL HAIL REPORTED 3 MILES NW ADAMS.

0510 PM     TSTM WND DMG     10 W SPRINGFIELD        36.50N 87.06W
05/29/2012                   ROBERTSON          TN   LAW ENFORCEMENT

            TREES DWON ACROSS WESTERN PORTIONS OF COUNTY.

0525 PM     TSTM WND DMG     WAVERLY                 36.09N 87.79W
05/29/2012                   HUMPHREYS          TN   LAW ENFORCEMENT

            TRAIN TRACK GATE BLOWN DOWN IN WAVERLY. TREES DOWN
            THROUGHOUT WAVERLY.

&&

31

Special weather statement, May 29, 6:48 PM CDT, 40 minutes before

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Local storm report, May 29, 6:55 PM CDT, 33 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
May 29, 7:51 PM CDT	Special Weather Statement	OHX	Wayne	24 min
May 30, 4:09 AM CDT	Dense Fog Advisory	OHX	Bedford, Benton, Cannon, Cheatham, Clay, Coffee and 33 more	4 hr

Nearby

Special Weather Statements in Tennessee, 2012 Every special weather statement in 2012

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.