Severe Thunderstorm Warning 36, NWS Nashville, TN

000 
WWUS54 KOHX 190812
SVSOHX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NASHVILLE TN
311 AM CDT WED MAR 19 2008

TNC005-083-161-190821-
/O.EXP.KOHX.SV.W.0036.000000T0000Z-080319T0815Z/
HOUSTON TN-STEWART TN-BENTON TN-
311 AM CDT WED MAR 19 2008

...THE SEVERE THUNDERSTORM WARNING FOR BENTON...STEWART AND WESTERN
HOUSTON COUNTIES WILL EXPIRE AT 315 AM CDT...

THE LINE OF SEVERE THUNDERSTOMS HAS BECOME MORE LINEAR DURING THE
LAST 15 MINUTES...INDICATIVE OF SOME WEAKENING. CROSS SECTIONS DONE
NORMAL TO THE LINE ALSO HAVE SHOWN A GENERAL LOWERING OF TOPS.

LAT...LON 3666 8768 3624 8780 3624 8794 3614 8791
      3603 8801 3595 8801 3594 8792 3585 8794
      3583 8796 3587 8824 3612 8823 3627 8810
      3635 8811 3638 8801 3643 8807 3668 8809
TIME...MOT...LOC 0811Z 000DEG 0KT 3594 8814

$$
BOBBY BOYD

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NASHVILLE TN
835 PM CDT TUE MAR 18 2008

.UPDATE...FORECAST CONTENT LOOKS GOOD AT THIS TIME. THE ONLY
EXPECTED UPDATES THIS EVENING WILL BE MINOR WORDING TWEAKS IN THE
ZONE PRODUCT.

AT 01Z...A FEW SHOWERS WERE STARTING TO DRIFT OVER OUR WEST
COUNTIES. MAIN SHOWERS/STORM ACTIVITY WAS BACK OVER WEST KY...MO
BOOTHEEL AND NORTHEAST AR. STORMS IN NORTHEAST AR HAD PRODUCED
SOME WIND DAMAGE AND A COUPLE OF FUNNEL CLOUD REPORTS. THESE
STORMS WEER OCCURRING IN A NARROW BAND IMMEDIATELY ALONG THE
FRONT...WHICH EXTENDED BACK TO A LOW PRESSURE IN NORTHEAST TX.
THIS FRONT AND ASSOCIATED CONVECTION WAS MAKING ONLY SLOW EASTWARD
PROGRESS THIS EVENING.

CONVECTIVE ACTIVITY HAS BEEN LIMITED OUT AHEAD OF THE FRONT. THE
EVENING OHX SOUNDING SHOWED STRONG WINDS WITH GOOD SHEAR FOR
SEVERE POTENTIAL. HOWEVER...PROFILE WAS RATHER DRY AND STABLE WITH
SOME CAPPING. SO...WE WILL ONLY SEE SCATTERED SHOWERS UNTIL THE
FRONT GETS CLOSER TO OUR AREA...AFTER MIDNIGHT. LATE NIGHT FORECAST
SOUNDINGS SHOW UNIMPRESSIVE THERMODYNAMICS...BUT WITH SLIGHT
LOW LEVEL INSTABILITY AND CONTINUED STRONG WIND FIELDS...WE WILL
HOLD ONTO THE SLIGHT CHANCE OF DAMAGING WINDS. THIS SLIGHT RISK
FOR SEVERE WEATHER WILL BE OVER OUR FAR WEST COUNTIES LATE
TONIGHT...AND ACROSS THE AREA WEDNESDAY MORNING.

MOST OF THE RAIN AND THUNDER WILL BE ALONG THE FRONT AND POST
FRONTAL. CONTINUED STRONG UVVS WILL MAKE DOWNPOURS HEAVY AT
TIMES. A WIND ADVISORY WILL REMAIN IN EFFECT THROUGH THE
NIGHT...WITH GRADIENT WIND GUSTS TO 40 MPH.

&&

.PREV DISCUSSION... /ISSUED 322 PM CDT TUE MAR 18 2008/

DISCUSSION...
THE SHOWER AND TSTM COVERAGE FROM TX THROUGH MO AND IL IS QUITE
EXTENSIVE THIS AFTERNOON. IT IS ALL IN ASSOCIATION WITH THE NEXT
STORM SYSTEM WHICH WILL BE THE NEXT WEATHER MAKER FOR THE MID
STATE.

IN ADVANCE OF THIS SYSTEM...PRESSURE GRADIENTS ARE STRENGTHENING AND
WIND SPEEDS ARE ELEVATED. SHOULD CONTINUE TO SEE WIND SPEEDS IN THE
20-30 MPH RANGE TONIGHT. ADDITIONALLY...HIGHER GUSTS TO 40 MPH CAN
BE EXPECTED AND THUS THE WIND ADVISORY WILL CONTINUE TONIGHT
THROUGH 12Z.

LOOKS AS THOUGH THE COLD FRONT WILL FINALLY REACH THE AREA WED
AFTERNOON. PRIOR TO THIS...THE RAINFALL WILL TAKE ITS TIME IN TERMS
OF REACHING MIDDLE TN. UPPER LEVEL SYSTEM CURRENTLY OVER SOUTH TX
WILL WEAKEN AND MOVE ACROSS THE SOUTHEAST IN THE FORM OF AN OPEN
TROUGH. FORCING VALUES WILL DECREASE RELATIVE TO WHAT WE ARE
SEEING TO THE WEST CURRENTLY. THUS...QPF AMOUNTS FOR TN WONT BE AS
SIGNIFICANT AS AMOUNTS WE SEE TO THE WEST. NEVERTHELESS...LOOK FOR
THE PRECIPITATION TO MOVE IN AFTER MIDNIGHT TONIGHT AND CONTINUE
INTO WED MORNING AFTER SUNRISE.

POST FRONTAL SHOWERS MAY OCCUR WED AFTERNOON WITH THE ACTIVITY
LEAVING THE PLATEAU SOMETIME EARLY WED EVENING.

IN TERMS OF SVR POTENTIAL...WIND SHEER LOOKS PROMISING BUT
INSTABILITY VALUES ARE SOMEWHAT LIMITED. WILL MENTION THAT A FEW
STORMS COULD BE SEVERE ACROSS THE WEST FOR TONIGHT AND MUCH OF THE
SOUTH AND EAST FOR WED MORNING. MAIN THREAT WILL BE DAMAGING WINDS.

IN THE EXT PERIOD...PATTERN LOOKS RATHER TRANQUIL. A WEAK FRONTAL
BOUNDARY MAY BRING A FEW SHOWERS TO THE AREA FRI NIGHT.
OTHERWISE...LOOK FOR DAYTIME HIGHS TO RUN A FEW DEGREES BELOW NORMAL.

&&

.OHX WATCHES/WARNINGS/ADVISORIES...
WIND ADVISORY UNTIL 7 AM CDT WEDNESDAY FOR TNZ005>011-022>034-
056>066-075-077>080-093>095.

&&

13

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NASHVILLE TN
919 AM CDT TUE MAR 18 2008

TNZ010-011-031>034-065-066-078>080-191430-
CLAY-PICKETT-JACKSON-PUTNAM-OVERTON-FENTRESS-WHITE-CUMBERLAND-
WARREN-GRUNDY-VAN BUREN-
919 AM CDT TUE MAR 18 2008

...WIND ADVISORY IN EFFECT UNTIL 6 AM CDT WEDNESDAY...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR MIDDLE TENNESSEE.

.DAY ONE...TODAY AND TONIGHT

THE FOLLOWING WEATHER HAZARD(S) ARE IN EFFECT...

   WIND ADVISORY

MORE INFORMATION IS AVAILABLE ON THE INTERNET AT WEATHER.GOV OR
BY LISTENING TO NOAA WEATHER RADIO.

OTHERWISE...AN APPROACHING LOW PRESSURE SYSTEM AND COLD FRONT WILL
BRING THUNDERSTORMS TONIGHT INTO WEDNESDAY MORNING. SOME STRONG
TO SEVERE STORMS ARE POSSIBLE WITH HEAVY DOWNPOURS AND GUSTY
WINDS.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

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.

TNZ005>009-022>030-056>064-075-077-093>095-191430-
STEWART-MONTGOMERY-ROBERTSON-SUMNER-MACON-BENTON-HOUSTON-
HUMPHREYS-DICKSON-CHEATHAM-DAVIDSON-WILSON-TROUSDALE-SMITH-PERRY-
HICKMAN-LEWIS-WILLIAMSON-MAURY-MARSHALL-RUTHERFORD-CANNON-DEKALB-
BEDFORD-COFFEE-WAYNE-LAWRENCE-GILES-
919 AM CDT TUE MAR 18 2008

...WIND ADVISORY IN EFFECT UNTIL MIDNIGHT CDT TONIGHT...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR MIDDLE TENNESSEE.

.DAY ONE...TODAY AND TONIGHT

THE FOLLOWING WEATHER HAZARD(S) ARE IN EFFECT...

   WIND ADVISORY

MORE INFORMATION IS AVAILABLE ON THE INTERNET AT WEATHER.GOV OR
BY LISTENING TO NOAA WEATHER RADIO.

OTHERWISE...AN APPROACHING LOW PRESSURE SYSTEM AND COLD FRONT WILL
BRING THUNDERSTORMS TONIGHT INTO WEDNESDAY MORNING. SOME STRONG
TO SEVERE STORMS ARE POSSIBLE WITH HEAVY DOWNPOURS AND GUSTY WINDS.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

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.

21

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NASHVILLE TN
210 AM CDT WED MAR 19 2008

TNZ005-022-190815-
BENTON-STEWART-
210 AM CDT WED MAR 19 2008

...A LINE OF STRONG THUNDERSTORMS WAS AFFECTING BENTON AND STEWART
COUNTIES...

AT 206 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
LINE OF STRONG THUNDERSTORMS 20 MILES WEST OF TENNESSEE RIVER. AS
THE STORMS APPROACH BENTON AND STEWART COUNTIES...THEY COULD
DRAG...STRONG WINDS JUST ABOVE THE SURFACE DOWN TO THE GROUND.

WINDS 40 TO 50 MPH ARE EXPECTED WITH THIS LINE OF STORMS.

THESE STORMS ARE BEING MONITORED CLOSELY...BY THE NATIONAL WEATHER
SERVICE IN NASHVILLE.

BOYD