Severe Thunderstorm Warning 188, NWS Nashville, TN

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NASHVILLE TN
215  PM CDT THU JUN 24 1999

LOW PRES AREA MOVING SLOWLY EASTWARD ACROSS OHIO RIVER VALLEY
CONTINUES TO PRODUCE SCATTERED SHOWERS OVER NORTHERN MIDDLE TN.
EXPECT THIS TREND TO CONTINUE, AS LOW PRES SYSTEM MAINTAINS ITS
SLOW EWD TRACK OVERNIGHT. BELIEVE MAIN RAIN AREA TO MIGRATE THROUGH
NASHVILLE AREA THIS EVENING AND INTO NORTHEASTERN MIDDLE TN BY LATE
TONIGHT. EXPECT SOME CLEARING TO TAKE PLACE OVER SOME PARTS OF
WESTERN PARTS OF THE MID-STATE AFTER MIDNIGHT, AS DRIER AIR WORKS IN
ON THE BACKSIDE OF LOW PRES AREA. WITH WINDS NEAR CALM AND WET
GROUND, BELIEVE FOG COULD BECOME A LATE-NIGHT PROBLEM WHERE SKIES
CLEAR AND WILL PROBABLY MENTION THAT POTENTIAL IN ZFP.

EXPECT A GENERAL DRYING TREND (WITH LOWER POPS) FOR THE 2ND THROUGH
4TH PERIODS, WITH A DECREASE IN CLOUDINESS. THERE IS A SMALL
POSSIBILITY, HOWEVER, THAT WIDELY SCATTERED OR SCATTERED
SHOWERS COULD WORK THEIR WAY BACK INTO SOUTHWESTERN MIDDLE TN
AS EARLY AS FRIDAY NIGHT, IN ADVANCE OF ANOTHER LOW PRESSURE
AREA AND UPPER LEVEL VORTICITY LOBE OUT OF THE SOUTHERN PLAINS AND
LOWER MISSISSIPPI VALLEY. AVN 1000-500MB MEAN RH PROGS SUGGEST
ANOTHER DOSE OF PRECIPITATION SPREADING NORTHEASTWARD OVER ALL OF
MIDDLE TN SATURDAY AND SATURDAY NIGHT, AS CONTINUING INTO SUNDAY.

FWC/FAN TEMPERATURE FORECASTS LOOK REASONABLE, AND WILL PROBABLY STAY
CLOSE TO THOSE VALUES.

BNA BB 70/88/70/88 74 19411
CSV BB 66/80/63/81 70 19831