Alert archive / Tennessee / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 64, NWS Nashville, TN

June 8, 2007Maury County, Tennessee

NWS Nashville, TN issued this severe thunderstorm warning at Jun 8, 2007, 1:31 PM CDT for Maury County, Tennessee. It was in force for 44 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jun 8, 2007, 1:31 PM CDT (18:31 UTC)
Expired: Jun 8, 2007, 2:15 PM CDT
In force: 44 min
Issued by: NWS Nashville, TN
Area: Counties, with a storm outline in the text

County Maury County, TN

The radar

The Nashville radar (KOHX), 80 km from the middle of the area, began a volume at 18:33 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.

What was reported inside it

Time	Report	Where	Remark
Jun 8, 1:45 PM CDT	TSTM WND DMG	Columbia, TN	TREE DOWN ON MCCLANAHAN RD.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched one storm report to this severe thunderstorm warning; the first came 14 minutes after it went out.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 8, 9:03 AM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 6.5 hours before the alert went out and 67 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: 2466 J/kg
Mixed-layer CIN: -32 J/kg
Mixed-layer LCL: 715 m above ground
0-6 km bulk shear: 12 kt
0-1 km storm-relative helicity: 35 m²/s²
0-3 km storm-relative helicity: 46 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.

000 
WUUS54 KOHX 081832
SVROHX
TNC119-081915-
/O.NEW.KOHX.SV.W.0064.070608T1831Z-070608T1915Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NASHVILLE TN
131 PM CDT FRI JUN 8 2007

THE NATIONAL WEATHER SERVICE IN NASHVILLE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  MAURY COUNTY IN TENNESSEE...
  THIS INCLUDES THE CITY OF COLUMBIA...

* UNTIL 215 PM CDT

* AT 122 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING NICKEL SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED 10
  MILES NORTHWEST OF COLUMBIA...AND MOVING SOUTHEAST AT 25 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  COLUMBIA BY 140 PM CDT...

  MOVE INDOORS WHEN THUNDERSTORMS APPROACH. STAY AWAY FROM WINDOWS.

LAT...LON 3582 8715 3563 8732 3544 8698 3564 8684

$$
BOYD/KNIGHT

1 follow-up statement

000 
WWUS54 KOHX 081843
SVSOHX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NASHVILLE TN
143 PM CDT FRI JUN 8 2007

TNC119-081915-
/O.CON.KOHX.SV.W.0064.000000T0000Z-070608T1915Z/
MAURY TN-
143 PM CDT FRI JUN 8 2007

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 215 PM CDT
FOR MAURY COUNTY...

AT 141 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR MOUNT PLEASANT...OR
ABOUT 11 MILES WEST OF COLUMBIA...MOVING EAST AT 20 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  COLUMBIA BY 210 PM CDT...

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE 
IMMEDIATELY FOR DAMAGING WINDS AND DEADLY CLOUD TO GROUND LIGHTNING. 
PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...PREFERABLY INSIDE A STRONG 
BUILDING BUT AWAY FROM WINDOWS.

LAT...LON 3580 8717 3559 8729 3548 8716 3545 8698
      3554 8686 3572 8678 3578 8699

$$
STEIGERWALDT

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 8, 1:07 PM CDT, 24 minutes earlier.

Area forecast discussion, Jun 8, 1:07 PM CDT, 24 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NASHVILLE TN
107 PM CDT FRI JUN 8 2007

.DISCUSSION...LINE OF STORMS CURRENTLY WORKING ITS WAY THROUGH
MIDDLE TENNESSEE APPEARS TO BE RE-INTENSIFYING, HENCE THE INCREASE
IN SEVERE THUNDERSTORM WARNINGS. A HAND-DRAWN SURFACE ANALYSIS
BASED ON 17Z DATA SHOWS A TROUGH MOVING THROUGH MIDDLE TENNESSEE
RIGHT ALONG THE LINE OF CONVECTION. THE ACTUAL FRONT IS STILL WEST
OF THE OHIO AND MISSISSIPPI RIVERS, WITH DEW POINTS IN THE UPPER
60S AHEAD OF THE FRONT. IT IS STILL POSSIBLE THAT ADDITIONAL
WEATHER MAY FORM AHEAD OF OR ALONG THE FRONT BEFORE IS PASSES
THROUGH MIDDLE TENNESSEE, SO THERE ARE NO PLANS TO START CANCELING
THE SEVERE THUNDERSTORM WATCH IN AREAS BEHIND THIS INITIAL LINE OF
STORMS.

WILL ISSUE A MORE COMPLETE DISCUSSION CLOSER TO FORECAST ISSUANCE
TIME.

.PRELIMINARY POINT TEMPS/POPS...
NASHVILLE      68  85  62  85 /  10  10  10  10
CLARKSVILLE    64  85  58  85 /  10  10  10  10
CROSSVILLE     65  83  59  85 /  20  10  10  10
COLUMBIA       69  87  63  85 /  10  10  10  10
LAWRENCEBURG   69  89  64  87 /  10  10  10  10
WAVERLY        66  86  60  86 /  10  10  10  10
&&

.OHX WATCHES/WARNINGS/ADVISORIES...SEVERE THUNDERSTORM WATCH FOR
WESTERN MIDDLE TENNESSEE UNTIL 21Z...EASTERN MIDDLE TENNESSEE
UNTIL 01Z.
&&

ROSE

Hazardous weather outlook, Jun 8, 5:30 AM CDT, 8 hours 1 minute before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NASHVILLE TN
530 AM CDT FRI JUN 8 2007

TNZ005>011-022>034-056>066-075-077>080-093>095-091030-
BEDFORD-BENTON-CANNON-CHEATHAM-CLAY-COFFEE-CUMBERLAND-DAVIDSON-
DEKALB-DICKSON-FENTRESS-GILES-GRUNDY-HICKMAN-HOUSTON-HUMPHREYS-
JACKSON-LAWRENCE-LEWIS-MACON-MARSHALL-MAURY-MONTGOMERY-OVERTON-PERRY-
PICKETT-PUTNAM-ROBERTSON-RUTHERFORD-SMITH-STEWART-SUMNER-TROUSDALE-
VAN BUREN-WARREN-WAYNE-WHITE-WILLIAMSON-WILSON-
530 AM CDT FRI JUN 8 2007

THIS HAZARDOUS WEATHER OUTLOOK IS FOR MIDDLE TENNESSEE.

.DAY ONE...TODAY AND TONIGHT

THERE IS A SLIGHT RISK OF SEVERE STORMS...MAINLY IN THE AFTERNOON
HOURS. THE GREATEST THREAT FROM THE STRONGEST STORMS WILL BE DAMAGING
WINDS.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

BECAUSE OF THE ISOLATED NATURE OF SEVERE WEATHER TODAY...SPOTTER
ACTIVATION IS UNLIKELY.

MAG

In the hours before

Special weather statement, Jun 8, 10:05 AM CDT, 3 hours 26 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NASHVILLE TN
1005 AM CDT FRI JUN 8 2007

TNZ005-022>024-081600-
BENTON-HOUSTON-HUMPHREYS-STEWART-
1005 AM CDT FRI JUN 8 2007

...SEVERE THUNDERSTORM WATCH 368 IN EFFECT UNTIL 4 PM CDT...

A LINE OF SEVERE THUNDERSTORMS IS APPROACHING THE TENNESSEE
RIVER ABOUT 25 MILES WEST OF DOVER. THE LINE OF STORMS
WILL MOVE INTO THE STEWART...BENTON AND HOUSTON COUNTIES
AROUND 1030 AM. DAMAGING WINDS ARE POSSIBLE WITH THIS
LINE OF STORMS.

THE LINE OF STORMS WILL CONTINUE TO MOVE EAST THROUGH
WESTERN MIDDLE TENNESSEE THIS MORNING. RESIDENTS IN MIDDLE
TENNESSEE SHOULD STAY ABREAST OF THE WEATHER...AND TAKE
SHELTER INDOORS WHEN THUNDERSTORMS APPROACH.

BOYD

Special weather statement, Jun 8, 11:23 AM CDT, 2 hours 8 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NASHVILLE TN
1123 AM CDT FRI JUN 8 2007

TNZ007-008-025>028-059-062-081745-
CHEATHAM-DAVIDSON-DICKSON-ROBERTSON-RUTHERFORD-SUMNER-WILLIAMSON-
WILSON-
1123 AM CDT FRI JUN 8 2007

AN AREA OF STRONG THUNDERSTORMS WILL BE MOVING THROUGH DICKSON AND
CHEATHAM COUNTIES BETWEEN 11:30 AM AND NOON...AND THROUGH
ROBERTSON...DAVIDSON...WESTERN SUMNER...WESTERN WILSON...AND
NORTHERN WILLIAMSON COUNTY BETWEEN NOON AND 1 PM CDT. EXPECT GUSTY
WINDS OF ABOUT 40 MPH...PEA SIZE HAIL AND LOCALLY HEAVY RAINS.
THE THUNDERSTORMS WERE MOVING TO THE EAST-SOUTHEAST AT 35 MPH.
STAY TUNED TO NOAA WEATHER RADIO OR COMMERCIAL BROADCASTS FOR FURTHER
WEATHER UPDATES IF WEATHER WARNINGS ARE NECESSARY.

ORCHANIAN

Local storm report, Jun 8, 1:11 PM CDT, 20 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE TN
111 PM CDT FRI JUN 08 2007

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

0109 PM     TSTM WND DMG     HENDERSONVILLE          36.29N 86.60W
06/08/2007                   SUMNER             TN   LAW ENFORCEMENT

            HENDERSONVILLE POLICE DEPT.REPORTED A LARGE TREE LIMB AND
            POWER LINES DOWN.

&&

ORCHANIAN

The office that day

Everything else NWS Nashville, TN issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 8, 10:13 AM CDT	Severe Thunderstorm Warning	OHX	Stewart	47 min
Jun 8, 10:51 AM CDT	Severe Thunderstorm Warning	OHX	Montgomery	39 min
Jun 8, 11:37 AM CDT	Severe Thunderstorm Warning	OHX	Benton	38 min
Jun 8, 11:46 AM CDT	Severe Thunderstorm Warning	OHX	Robertson	59 min
Jun 8, 12:30 PM CDT	Severe Thunderstorm Warning	OHX	Davidson	30 min
Jun 8, 12:40 PM CDT	Severe Thunderstorm Warning	OHX	Cheatham, Davidson, Williamson	65 min
Jun 8, 12:55 PM CDT	Severe Thunderstorm Warning	OHX	Sumner, Wilson	65 min
Jun 8, 12:59 PM CDT	Severe Thunderstorm Warning	OHX	Hickman, Perry	46 min
Jun 8, 1:11 PM CDT	Severe Thunderstorm Warning	OHX	Lewis	49 min
Jun 8, 1:22 PM CDT	Severe Thunderstorm Warning	OHX	Macon, Smith	8 min
Jun 8, 1:27 PM CDT	Severe Thunderstorm Warning	OHX	Jackson	48 min
Jun 8, 2:35 PM CDT	Severe Thunderstorm Warning	OHX	Lawrence	25 min

Nearby

Severe Thunderstorm Warnings in Tennessee, 2007 Every severe thunderstorm warning in 2007

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.