St. Matthews, Kentucky 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

133
FXUS63 KLMK 071946
AFDLMK

Area Forecast Discussion
National Weather Service Louisville KY
346 PM EDT Sat Jun 7 2025

.KEY MESSAGES...

* Another round of strong to severe storms this evening.

* Heavy rainfall will be possible with showers and storms today
  through Monday. An additional 1 to 3 inches will be possible.

* Another round of showers and storms will move through on Monday.

&&

.SHORT TERM /THROUGH SUNDAY/...
Issued at 346 PM EDT Sat Jun 7 2025

Troughing aloft is beginning to move in from the west and the
surface stationary front is still draped over southern Indiana. A
few very light showers have popped up on radar as a dense Cu field
has developed over the region. Through the remainder of the
afternoon, an MCS will enter from the west into the Tennessee
Valley. This will mostly pass to the south of the region, however,
some stronger storms may pass along our southern border bringing
gusty to damaging winds, small hail, and frequent lightning. North
of this line, a few showers and storms will develop after 4PM ET and
quickly increase in coverage. Similar to yesterday, a deformation
band may set up over I-64 and north bringing heavy rain and a
potential for flooding.

Given the unprecedented cloud coverage today so far, temperatures
have not been able to warm into the widespread low 80s. For this
reason, instability may not be as strong this afternoon. Will still
see some SBCAPE just under 1000J/kg, however shear is very weak and
inhibiting storm organization. Storms will begin to weaken as the
sun sets and instability wanes. Showers and stratiform rain along
the deformation band will last into the first half of the night.
With PWATs between 1.8-2.1 inches, there is a very tropical airmass
over the over the region bringing ample moisture to little lift and
instability. This airmass may lead to flooding and flash flooding,
especially in regions that saw efficient rain yesterday. QPF through
tonight is 0.5-1.5 inches with locally higher amounts possible.

In the early morning on Sunday, clouds will lower and patchy dense
fog will be possible especially over the northern half of the
region.

On Sunday, a closed upper low will begin to sink south from central
Canada into the upper Midwest. This system will push the stalled
surface front out of southern Indiana and through the region as a
weak cold front. A few isolated showers and storms are possible in
the afternoon as this front pushes across the region.

&&

.LONG TERM /SUNDAY NIGHT THROUGH SATURDAY/...
Issued at 346 PM EDT Sat Jun 7 2025

Sunday Night through Monday Night...

The aforementioned closed upper low will swing through the Great
Lakes region, which will send a cold front southeast through the
lower Ohio Valley. This will bring another round of showers and
storms through the region Monday morning. The front and precip will
push southeast by late evening Monday. Another 0.5-1.0 inches of
rainfall is expected on Monday.

Tuesday through Thursday...

High pressure will build in behind the front allowing the region to
dry out and calm conditions to return. Ridging will build over the
region, which will increase temperatures to slightly above normal.

Thursday Night - Late Week...

Late week, an upper trough will develop over the southern Plains and
approach the Ohio Valley. This will bring another chance for
unsettled weather.

&&

.AVIATION /18Z TAFS THROUGH 00Z MONDAY/...
Issued at 116 PM EDT Sat Jun 7 2025

Currently, light winds are over the region and CIGs are lifting.
Light showers are expected towards the afternoon with thunderstorms
developing in the later afternoon. Thunderstorms will quickly
increase in coverage and lasting through evening. CIGs will drop in
the early morning around 7-8Z to IFR levels. Some fog development is
possible over the northern terminals.

&&

.LMK WATCHES/WARNINGS/ADVISORIES...
KY...None.
IN...None.

&&

$$

SHORT TERM...SRW
LONG TERM...SRW
AVIATION...SRW