-- Discussion containing changed information from previous version are highlighted. --
411
FXUS64 KMRX 110740
AFDMRX

Area Forecast Discussion
National Weather Service Morristown TN
340 AM EDT Tue Jun 11 2024

...New SHORT TERM, LONG TERM...

.SHORT TERM...
-- Changed Discussion --
(Today and tonight)
Issued at 244 AM EDT Tue Jun 11 2024

Key Messages:

1. Early morning clouds southwest Virginia/northeast Tennessee,
otherwise mostly clear.

Discussion:

Satellite and area observations show broken areas of clouds for
southwest Virginia and northeast Tennessee early this morning as a
short-wave moves east. Otherwise, dry northwest flow aloft and
surface ridging will produce dry, clear, and warm days.
-- End Changed Discussion --

&&

.LONG TERM...
-- Changed Discussion --
(Wednesday through Monday)
Issued at 244 AM EDT Tue Jun 11 2024

Key Messages:

1. A hot pattern sets up through the weekend, with well above normal
temperatures expected, potentially near record highs.

2. Dry weather expected through the weekend, then rain chances may
return next week.

Discussion:

Wednesday will be the start of a warming trend that will continue
through the end of the week. A low level ridge will be over the area
to start the period, with a weak westerly flow aloft. Temperatures
on Wednesday will be close to normal. The flow will become more
amplified on Thursday as a large high pressure ridge builds to our
west, with troughing off the East Coast. This ridge will slowly
shift east and be over the TN Valley/southern Appalachian region
through the weekend. Dry and hot conditions can be expected with the
subsidence under the ridge. Highs will be in the 90s for most
locations outside the mountains on Saturday and Sunday. We could see
highs close to records at CHA, particularly on Friday as the record
that day is 97. Sunday will likely have the highest heat index as
the surface high shifts east of the Appalachians and a southerly
flow brings higher dewpoints. The heat index may exceed 100 for the
southern Valley on Sunday.

Forecast confidence decreases on Monday as the models show a
tropical wave spreading north from the Gulf. With the ridge expected
to be located near the Outer Banks, this moisture should stay west
of our area for the most part, affecting the MS Valley region, but
there may be enough low level moisture and instability for some
scattered showers and thunderstorms.
-- End Changed Discussion --

&&

.AVIATION...
(06Z TAFS)
Issued at 127 AM EDT Tue Jun 11 2024

Broken areas of 5-8kft clouds across TRI, otherwise mostly clear
at TYS and CHA. Short-wave is moving across the region early this
morning and will be east of the area for today. Clouds will
dissipate with VFR conditions anticipated throughout the forecast
period.

Winds will be mainly northerly 5 to 15 mph.

&&

.PRELIMINARY POINT TEMPS/POPS...
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Chattanooga Airport, TN             84  60  88  65 /   0   0   0   0
Knoxville McGhee Tyson Airport, TN  80  57  86  63 /   0   0   0   0
Oak Ridge, TN                       79  57  85  62 /   0   0   0   0
Tri Cities Airport, TN              76  52  84  60 /   0   0   0   0
-- End Changed Discussion --

&&

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

$$

SHORT TERM...DH
LONG TERM....DGS
AVIATION...DH