River Flood Advisory 4, NWS Nashville, TN

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NASHVILLE TN
908 AM CDT FRI APR 4 2008

.DISCUSSION...
LARGE AREA OF RAIN AND ISOLATED THUNDERSTORMS ACROSS THE MID STATE
AT THIS HOUR. AREAS NW OF A WAVERLY THROUGH SPRINGFIELD LINE HAVE
SEEN THE ACTIVITY DECREASE SOME IN INTENSITY AND COVERAGE.
HOWEVER...LIGHT TO OCCASIONALLY MODERATE RAINFALL IS STILL EXPECTED
TO CONTINUE OVER THE NW ZONES.

CURRENT FRONTAL POSITION STRETCHES ROUGHLY FROM LOBELVILLE THROUGH
PORTLAND. IT IS TO THE SE OF THIS BOUNDARY WHERE THE CONTINUOUS
MODERATE TO OCCASIONALLY HEAVY RAINFALL IS OCCURRING.

THE LATEST MSAS 3HR PRESSURE CHANGE GRAPHIC IS INDICATING THAT
PRESSURE RISES ARE OCCURRING TO THE NW OF THE BOUNDARY. THUS WE
SHOULD CONTINUE TO SEE A SOUTHEASTWARD MOVEMENT OF THE FRONTAL
BOUNDARY. MODEL GRAPHICS ARE IN AGREEMENT WITH SOME DEGREE OF
PROGRESSIVENESS WITH THE SYSTEM. BY 00Z...THE BOUNDARY IS
EXPECTED TO BE ALONG THE EASTERN MOST EDGE OF OUR CWA. THIS MAY BE A
LITTLE FAST...BUT NEVERTHELESS...WE SHOULD SEE A SLOW DECREASE IN
COVERAGE AND INTENSITY FROM NW TO SE AS WE GO THROUGH THE DAY.

OTHERWISE...STILL LOOKING AT HEAVY RAINFALL AMOUNTS THROUGH
OOZ...PARTICULARLY ACROSS EASTERN AND SOUTHERN AREAS OF THE MID
STATE.

SEE NO REASON TO CHANGE MUCH OF ANYTHING AT THIS POINT IN TIME.
TEMPS APPEAR TO BE ON TRACK. A DOWNWARD TWEAK TO THE TEMPS MAY BE
NEEDED A LITTLE LATER ACROSS NW ZONES BUT WILL WAIT FOR NOW.

CATEGORICAL POPS STILL ON ORDER AS EVEN ACROSS THE NW...BROKEN LIGHT
TO MODERATE SHOWER ACTIVITY TO PERSIST.

&&

.OHX WATCHES/WARNINGS/ADVISORIES...
FLOOD WATCH THROUGH THIS EVENING FOR TNZ010-011-031>034-065-066-
077>080.

&&

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