Area Forecast Discussion
Issued by NWS Knoxville/Tri Cities, TN

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
000
FXUS64 KMRX 230715
AFDMRX

Area Forecast Discussion
National Weather Service Morristown TN
315 AM EDT Sun Jul 23 2017

.SHORT TERM...(Today and tonight)...The frontal boundary across the
ohio valley will sag a bit closer during the period.  Some weak
short wave energy will be moving across the region later
today/tonight, and remnants of outflow boundaries from northern
convection will likely be in our vicinity as well. This combined
with considerable convective energy should provide a more active day
with scattered to numerous showers and thunderstorms, especially
this afternoon and the first part of tonight.  Some of the storms
this afternoon/evening may become strong to severe, so will mention
this threat in the HWO. It will be hot and humid again today, but
heat index values should top out below heat advisory criteria.

.LONG TERM...(Monday through Saturday)...An upper trough will
mercifully press gradually east across the northeastern corner of
the nation, helping to push a cool frontal boundary through the
Southern Appalachian Region. The boundary will not entirely drift
south of the forecast area and may become stationary over Southeast
Tennessee and Southwest North Carolina. Thus, the probability of
convection will gradually decrease from north to south Monday into
Wednesday as the front hangs up near the Georgia border. Another
upper trough will build southeast out of Canada through the Eastern
U.S. late in the week. The probability of cooling showers and
thunderstorms will increase again later Thursday through Friday
night as an associated cool front presses south across the forecast
area. The heat will briefly return mid week along with the
decreasing chance for convection however, some temperature relief
can be expected again Friday into Saturday with the front,
precipitation, and week northerly flow behind the boundary.


&&

.PRELIMINARY POINT TEMPS/POPS...
Chattanooga Airport, TN             94  76  89  74 /  30  50  50  30
Knoxville McGhee Tyson Airport, TN  94  73  88  72 /  40  60  40  30
Oak Ridge, TN                       93  74  89  72 /  40  60  30  30
Tri Cities Airport, TN              91  69  88  68 /  60  60  20  30

&&

.MRX WATCHES/WARNINGS/ADVISORIES...
NC...None.
TN...None.
VA...None.
&&

$$





USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.