Alert archive / Tennessee / Special Weather Statements in 2011

Special Weather Statement, NWS Nashville, TN

October 18, 20117 counties in Tennessee

NWS Nashville, TN issued this special weather statement at Oct 18, 2011, 6:23 PM CDT for 7 counties in Tennessee. It was in force for 52 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: Oct 18, 2011, 6:23 PM CDT (23:23 UTC)
Expired: Oct 18, 2011, 7:15 PM CDT
In force: 52 min
Issued by: NWS Nashville, TN

Counties Cannon County, TN, Coffee County, TN, DeKalb County, TN, Grundy County, TN, Van Buren County, TN, Warren County, TN, White County, TN

The radar

The Northeast Alabama radar (KHTX), 77 km from the middle of the area, began a volume at 23:23 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, 11.4 hours before the alert went out and 105 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: 142 J/kg
Mixed-layer CIN: -151 J/kg
Mixed-layer LCL: 1391 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 100 m²/s²
0-3 km storm-relative helicity: 109 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

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 Oct 18, 3:49 PM CDT, 2 hours 34 minutes earlier.

Area forecast discussion, Oct 18, 3:49 PM CDT, 2 hours 34 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NASHVILLE TN
349 PM CDT TUE OCT 18 2011

.DISCUSSION...STRONG COLD FRONT CURRENTLY WORKING ITS WAY ACROSS
EASTERN MIDDLE TENNESSEE THIS AFTERNOON, WITH SCATTERED
THUNDERSTORMS POPPING UP ALONG AND AHEAD OF THE FRONT. LARGE
TEMPERATURE AND DEW POINT DISCONTINUITY ACROSS THE FRONT, WITH
LIGHTER, NON-CONVECTIVE PRECIPITATION MOVING INTO PARTS OF THE
MID STATE BEHIND THE FRONT. LOOK FOR ARCTIC AIR MASS TO BLANKET
THE MID STATE OVERNIGHT, WITH ADDITIONAL, MAINLY LIGHT RAIN
LASTING OVERNIGHT AND INTO TOMORROW AS DEEPER MOISTURE WRAPS
AROUND THE SURFACE AND UPPER LOW. GFS SHOWS CONTINUED CYCLOGENESIS
DURING THE NEXT 48 HRS AS THE LOW TRACKS NORTHEASTWARD TOWARD THE
EASTERN GREAT LAKES. EXPECT LOW CEILINGS TO LAST INTO THURSDAY
MORNING BEFORE DRIER AIR FINALLY WORKS ITS WAY INTO MIDDLE
TENNESSEE. LOOK FOR MUCH COOLER WEATHER THIS UPCOMING WEEK, WITH
SOME READINGS DROPPING INTO THE 30'S WEDNESDAY NIGHT THROUGH
SATURDAY NIGHT BEFORE TEMPERATURES START TO WARM UP. DON'T
EXPECT ANY FREEZING TEMPERATURES DURING THAT STRETCH, BUT FROST IS
POSSIBLE.
&&

.PRELIMINARY POINT TEMPS/POPS...
NASHVILLE      43  52  42  55 /  90  60  30  20
CLARKSVILLE    40  51  40  57 /  90  50  40  20
CROSSVILLE     45  49  36  51 /  90  70  30  20
COLUMBIA       43  53  40  57 /  80  50  20   0
LAWRENCEBURG   42  53  38  58 /  70  40  20   0
WAVERLY        41  52  40  57 /  80  40  30  05
&&

.OHX WATCHES/WARNINGS/ADVISORIES...
NONE.
&&

ROSE

Hazardous weather outlook, Oct 18, 6:05 PM CDT, 18 minutes before

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In the hours before

Local storm report, Oct 18, 5:08 PM CDT, 1 hour 15 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE TN
508 PM CDT TUE OCT 18 2011

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

0455 PM     HAIL             9 ESE LEWISBURG         35.41N 86.63W
10/18/2011  E0.75 INCH       BEDFORD            TN   TRAINED SPOTTER

&&

SHAMBURGER

Local storm report, Oct 18, 5:13 PM CDT, 1 hour 10 minutes before

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE NASHVILLE TN
513 PM CDT TUE OCT 18 2011

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

0225 PM     HAIL             8 NE NASHVILLE          36.25N 86.68W
10/18/2011  E0.75 INCH       DAVIDSON           TN   TRAINED SPOTTER

            REPORTED IN MADISON

0236 PM     HAIL             HENDERSONVILLE          36.29N 86.60W
10/18/2011  E0.75 INCH       SUMNER             TN   TRAINED SPOTTER

0239 PM     HAIL             HENDERSONVILLE          36.29N 86.60W
10/18/2011  E0.75 INCH       SUMNER             TN   TRAINED SPOTTER

0300 PM     HAIL             TULLAHOMA               35.37N 86.22W
10/18/2011  E2.75 INCH       COFFEE             TN   TRAINED SPOTTER

            THE HAIL PRODUCED LOTS OF DAMAGE TO CARS AND ROOFS

0305 PM     HAIL             TULLAHOMA               35.37N 86.22W
10/18/2011  E1.00 INCH       COFFEE             TN   TRAINED SPOTTER

0306 PM     HAIL             4 NE WESTMORELAND       36.60N 86.20W
10/18/2011  E1.00 INCH       MACON              TN   TRAINED SPOTTER

            REPORTED IN ROCKY MOUNT

0310 PM     HAIL             4 SW MURFREESBORO       35.81N 86.45W
10/18/2011  E2.50 INCH       RUTHERFORD         TN   TRAINED SPOTTER

            REPORTED AT BARFIELD. ALSO...LOCAL TV STATION HAS
            PICTURES OF TENNIS BALL SIZED HAIL IN RUTHERFORD COUNTY
            AREA.

0310 PM     HAIL             MURFREESBORO            35.85N 86.39W
10/18/2011  E1.75 INCH       RUTHERFORD         TN   TRAINED SPOTTER

0315 PM     HAIL             MURFREESBORO            35.85N 86.39W
10/18/2011  E1.75 INCH       RUTHERFORD         TN   TRAINED SPOTTER

0320 PM     TSTM WND GST     3 N MURFREESBORO        35.90N 86.39W
10/18/2011  E65.00 MPH       RUTHERFORD         TN   TRAINED SPOTTER

0320 PM     TSTM WND DMG     3 N MURFREESBORO        35.90N 86.39W
10/18/2011                   RUTHERFORD         TN   TRAINED SPOTTER

            TWO TREES BLOWN DOWN AND WINDOWS BROKEN OUT IN HOMES...
            WITH ALARMS GOING OFF.

0320 PM     HAIL             MANCHESTER              35.47N 86.08W
10/18/2011  E1.25 INCH       COFFEE             TN   TRAINED SPOTTER

0320 PM     HAIL             MURFREESBORO            35.85N 86.39W
10/18/2011  E1.75 INCH       RUTHERFORD         TN   TRAINED SPOTTER

            HAIL COVERED THE GROUND

0325 PM     HAIL             MANCHESTER              35.47N 86.08W
10/18/2011  E1.75 INCH       COFFEE             TN   TRAINED SPOTTER

0325 PM     HAIL             MURFREESBORO            35.85N 86.39W
10/18/2011  E1.75 INCH       RUTHERFORD         TN   TRAINED SPOTTER

0339 PM     HAIL             10 S LEBANON            36.07N 86.32W
10/18/2011  E1.00 INCH       WILSON             TN   TRAINED SPOTTER

0455 PM     HAIL             9 ESE LEWISBURG         35.41N 86.63W
10/18/2011  E0.75 INCH       BEDFORD            TN   TRAINED SPOTTER

&&

SHAMBURGER

Local storm report, Oct 18, 5:47 PM CDT, 36 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE TN
547 PM CDT TUE OCT 18 2011

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

0450 PM     TSTM WND DMG     2 N PULASKI             35.22N 87.03W
10/18/2011                   GILES              TN   BROADCAST MEDIA

            REPORT OF TREES DOWN ON NORTH SIDE OF PULASKI WITH POWER
            OUTAGES. TIME ESTIMATED BASED ON RADAR.

&&

SHAMBURGER

Special weather statement, Oct 18, 6:02 PM CDT, 21 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NASHVILLE TN
602 PM CDT TUE OCT 18 2011

TNZ062-063-077-182330-
CANNON-COFFEE-RUTHERFORD-
602 PM CDT TUE OCT 18 2011

...SIGNIFICANT WEATHER ADVISORY FOR CANNON...EXTREME NORTHWESTERN
COFFEE AND SOUTHEASTERN RUTHERFORD COUNTIES...

AT 600 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM 14 MILES SOUTHWEST OF WOODBURY...MOVING NORTHEAST
AT 30 MPH.

THIS STORM WILL BE NEAR...
  WOODBURY BY 625 PM CDT.

HALF INCH SIZE HAIL...AND WINDS 40 TO 50 MPH ARE EXPECTED WITH THIS
STORM.

LAT...LON 3592 8610 3584 8590 3573 8600 3567 8600
      3564 8624 3567 8631

55

Local storm report, Oct 18, 6:16 PM CDT, 7 minutes before

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Special weather statement, Oct 18, 6:23 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
Oct 18, 2:32 PM CDT	Special Weather Statement	OHX	Bedford, Cannon, Clay, Coffee, Cumberland, DeKalb and 19 more	58 min
Oct 18, 2:47 PM CDT	Severe Thunderstorm Warning	OHX	Bedford	48 min
Oct 18, 2:56 PM CDT	Severe Thunderstorm Warning	OHX	Bedford, Rutherford	64 min
Oct 18, 3:01 PM CDT	Severe Thunderstorm Warning	OHX	Macon	14 min
Oct 18, 3:04 PM CDT	Severe Thunderstorm Warning	OHX	Coffee	41 min
Oct 18, 3:21 PM CDT	Special Weather Statement	OHX	Bedford, Cannon, Clay, Coffee, Cumberland, DeKalb and 18 more	54 min
Oct 18, 3:27 PM CDT	Severe Thunderstorm Warning	OHX	Rutherford, Smith, Wilson	43 min
Oct 18, 3:33 PM CDT	Severe Thunderstorm Warning	OHX	Coffee, Warren	57 min
Oct 18, 3:40 PM CDT	Severe Thunderstorm Warning	OHX	Macon	20 min
Oct 18, 3:43 PM CDT	Tornado Warning	OHX	Grundy, Warren	32 min
Oct 18, 3:48 PM CDT	Severe Thunderstorm Warning	OHX	Macon, Sumner, Trousdale	27 min
Oct 18, 4:01 PM CDT	Severe Thunderstorm Warning	OHX	Macon, Smith, Trousdale, Wilson	37 min
Oct 18, 4:26 PM CDT	Severe Thunderstorm Warning	OHX	Cumberland, Putnam, Van Buren, Warren, White	49 min
Oct 18, 4:36 PM CDT	Special Weather Statement	OHX	Giles, Marshall	24 min
Oct 18, 5:00 PM CDT	Special Weather Statement	OHX	Bedford	45 min
Oct 18, 5:34 PM CDT	Severe Thunderstorm Warning	OHX	Bedford, Rutherford	26 min
Oct 18, 6:02 PM CDT	Special Weather Statement	OHX	Cannon	28 min

Nearby

Special Weather Statements in Tennessee, 2011 Every special weather statement in 2011

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.