Scientific Forecaster Discussion
Area forecast discussion
National Weather Service Nashville Tennessee
408 am CDT Sat Sep 20 2014
Very little change to previous forecast. Today will be similar to
yesterday with temperatures warming into the middle to upper 80s for most of
the area...and around 80 for the Cumberland Plateau. Mostly clear
to partly cloudy skies expected as we continue to see a southerly
surface flow ahead of an approaching trough. Another mild night
Cloud cover and precipitation chances will increase for the northwest
counties Sunday morning...keeping temperatures a few degrees cooler for
the northwest. However, temperatures will be allowed to warm
across the southern and eastern counties again on Sunday as those
areas will likely not see the frontal passage until after noon.
Will see slightly more potential for thunderstorms south of the
Interstate 40 corridor on Sunday due to the afternoon frontal passage and
daytime heating. Still not expecting severe weather...just general
thunderstorms with gusty winds possible. Precipitation is expected to enter the
northwest counties around 8am and push the through the County Warning Area
throughout the day...exiting the southeastern portion of middle
Tennessee by midnight Sunday night.
Monday will be relatively cool...highs in the middle 70s...and dry as
a northwest flow sets in the for the day. As the upper trough
continues to slide east a ridge of high pressure will move
in...influencing dry weather for remainder of the extended forecast.
Temperatures are forecast to warm into the low 80s Tuesday through
Saturday...overnight lows gradually warming from around 50 on
Monday night to the middle to upper 50s Saturday morning.
Preliminary point temps/pops...
Nashville 86 66 85 55 / 05 10 40 10
Clarksville 85 66 84 52 / 05 10 40 10
Crossville 80 62 80 53 / 05 10 50 20
Columbia 86 65 87 56 / 05 10 50 10
Lawrenceburg 87 64 88 56 / 05 10 50 10
Waverly 86 65 84 53 / 05 10 40 10