ILN issues Area Forecast Discussion (AFD) at Aug 9, 3:04 AM EDT414
FXUS61 KILN 090704
AFDILN
AREA FORECAST DISCUSSION
National Weather Service Wilmington OH
304 AM EDT Fri Aug 9 2024
.SYNOPSIS...
A surface trough will pivot into the area offering a chance for
showers and thunderstorms today. A cold front will move east
across the area on Friday offering a lingering threat for
precipitation. High pressure returns for the weekend into early
next week providing cooler and drier conditions.
&&
.NEAR TERM /THROUGH TONIGHT/...
An inverted trough/cold front northwest of Debby progresses east of
the Ohio Valley tonight as the tropical system undergoes
extratropical transition with the front being absorbed into the
system. Any showers ahead of the front end after midnight when the
best moisture moves east. Northwesterly winds persist through the
overnight behind the front as drier air works in from the north.
Forecast lows drop into the lower 60s west of I-75 to the lower 70s
in the Scioto River Valley. Some upper and mid level clouds should
persist east of I-75 overnight with Debby to the southeast.
&&
.SHORT TERM /SATURDAY THROUGH 6 AM SATURDAY/...
By Friday morning, the shortwave trough will have accelerated
the remnants of Debby into Pennsylvania, keeping the moisture
associated with the system well east of the area. The low
pressure passing to the east will help increase the pressure
gradient over the area, so northwesterly winds of 10 to 15 mph
is expected along with dry conditions. Even with the
northwesterly flow, negative theta-e advection struggles to
penetrate the local area until later in the evening. This will
allow for afternoon temperatures to still warm into the mid 80s
along and southeast of I-71.
A cooler and drier air mass associated with surface high
pressure nosing in from the west finally supplies a change in
the pattern for all locations. Low temperatures in the 50s by
Saturday morning will feel quite different from the recent
pattern. These temperatures will be 5 to 15 degrees below normal
for this time of the year.
&&
.LONG TERM /SATURDAY THROUGH THURSDAY/...
Broad, low amplitude long wave trough will be persistent
through the period although it will slowly translate eastward
towards the middle of next week. At the surface, high pressure
will prevail. There is a low potential of getting some showers
with any impulses moving through the trough, particularly late
in the period, but overall a dry pattern. Below normal
temperatures through the weekend into early next week will rise
to closer to normal by midweek.
&&
.AVIATION /06Z FRIDAY THROUGH TUESDAY/...
Isolated showers continue across the Scioto River Valley
associated with an inverted trof. Can not rule out a stray
shower affecting KCMH/KLCK early but coverage continues to
diminish.
Otherwise, some middle and upper level clouds will persist
this morning. Some VFR diurnal cumulus is forecast this
afternoon in the wake of a cold frontal passage.
Northerly winds around 10 knots early this morning back to the
northwest after sunrise and increase to 10-15 knots. Gusts up to
22 kts will be possible this afternoon.
OUTLOOK...No significant weather expected.
&&
.ILN WATCHES/WARNINGS/ADVISORIES...
OH...None.
KY...None.
IN...None.
&&
$$
SYNOPSIS...AR
NEAR TERM...Campbell
SHORT TERM...McGinnis
LONG TERM...
AVIATION...AR
Source:
ILN issues Area Forecast Discussion (AFD) at Aug 9, 3:04 AM EDT---------------
If I'm using your data in a way that is against your terms please email the team at "threatweb@pupswoof117.com"! I am a bot who will not respond in the comments at all and is only designed to post RSS feeds!
