-- Discussion containing changed information from previous version are highlighted. --
828
FXUS61 KRLX 220709
AFDRLX

AREA FORECAST DISCUSSION
National Weather Service Charleston WV
309 AM EDT Wed May 22 2024

.SYNOPSIS...
High pressure provides unseasonably warm and dry weather through
tonight. Cold front brings showers and thunderstorms Wednesday
afternoon and Thursday. Rain chances through the weekend.

&&

.NEAR TERM /THROUGH TONIGHT/...
As of 333 PM Tuesday...

Sent an update to add PoPs and thunder to NE KY and western WV per
latest radar imagery showing convection firing up over these
areas. Additional convection is noted over OH moving northeast,
expect this activity to move over the Mid OH valley and portions
of WV for the rest of this afternoon. Any convection will
quickly subside around sunset.

As of 117 PM Tuesday...

Summerlike weather will continue in the near-term forecast
period with plenty of sunshine and highs expected to reach the
upper 80s to near 90 degrees in some lowland spots both
afternoons.

A ridge bringing a push of warm, southerly air will control the
pattern today and again on Wednesday. A cold front will begin to
approach from the northwest Wednesday, but it will likely slow
down or stall out over central Ohio Wednesday afternoon and
evening. Showers and thunderstorms, some strong to severe, are
possible late on Wednesday. The best chance of severe weather
will likely be over our southeast Ohio counties. Just outside of
our CWA in central Ohio, daytime heating and a southwesterly
low- level jet will support MLCAPE values of 1,000-1,800 J/kg
and 30-40 kts of bulk shear Wednesday afternoon. The ingredients
for severe thunderstorms over southeast Ohio, northeast Kentucky
and West Virginia will be marginal, with high resolution models
showing a timing of 00Z to 03Z Thursday.

&&

.SHORT TERM /THURSDAY THROUGH SATURDAY NIGHT/...
-- Changed Discussion --
As of 300 AM Wednesday...

A cold front will push into the area on Thursday. An upper
level short wave will then cause a wave along the front,
enhancing showers and thunderstorms for Thursday into Thursday
night.

The cold front will stall just south of the area late Thursday
night/Friday morning. An upper level short wave will then
interact with the front and cause a wave to move along the
front Friday afternoon into Saturday. Models continue to
struggle with the strength of the short wave, and hence how far
north the moisture gets and how strong the dynamics are with
this system. The Canadian actually keeps this system completely
south of the area.

A weak cold front will move into the area on Saturday. With the
parent low in southern Canada, very little push and energy is
available for the front in our area, thus not really providing
much cool air.
-- End Changed Discussion --

&&

.LONG TERM /SUNDAY THROUGH TUESDAY/...
-- Changed Discussion --
As of 300 AM Wednesday...

Models show a system lifting from the midwest on Sunday into
the Great Lakes region on Monday. This will push a warm front
across the area on Sunday, followed by a cold front on Monday.
With systems nearly every day from later today into Monday, am
getting increasingly concerned with the threat for flash
flooding to occur for Sunday and Monday. This will be followed
by an upper level wave on Tuesday in the significantly cooler
air. Models still have differences during the Sunday through
Tuesday time period, but generally agree on the overall
features for the first time in numerous nighttime runs.
-- End Changed Discussion --

&&

.AVIATION /07Z WEDNESDAY THROUGH SUNDAY/...
-- Changed Discussion --
As of 100 AM Wednesday...

Maintaining VFR conditions through the morning, as high
pressure starts to slide east. Winds will be light and
variable farther west and across the higher elevations; going
calm across the mountain and river valleys.

Patchy river valley fog may develop in KEKN and the sheltered
river valleys this morning. Confidence is not strong though as
winds and cloud cover could keep it from forming altogether,
models are not confidence with coverage or timing either. IFR
restrictions could be possible at EKN if it does form.

Clouds will increase and thicken this morning as a cold front
approaches from the west. CIGs will gradually lower as well, but
VFR CIGs will last through much of the day, unless showers or
thunderstorms are around. Winds will pickup out of the SW by
mid-morning, gradually increasing in speed through the day, but
remaining light to breezy at times.

Afternoon showers and storms may develop today as the cold
front nears, but this is mostly of concern for the western
lowlands of WV and SE Ohio until the evening. Allowed VCSH at
CRW, HTS and PKB to cover the chances for showers at these
locations in the afternoon. IFR conditions possible under any
showers and thunderstorms.

FORECAST CONFIDENCE AND ALTERNATE SCENARIOS THROUGH 06Z THURSDAY...


FORECAST CONFIDENCE: Medium for fog, otherwise High.

ALTERNATE SCENARIOS: Fog may not develop at KEKN. Timing of
showers and thunderstorms this afternoon and tonight could vary
from the forecast.

EXPERIMENTAL TABLE OF FLIGHT CATEGORY OBJECTIVELY SHOWS
CONSISTENCY OF WFO FORECAST TO AVAILABLE MODEL INFORMATION:
H = HIGH:   TAF CONSISTENT WITH ALL MODELS OR ALL BUT ONE MODEL.
M = MEDIUM: TAF HAS VARYING LEVEL OF CONSISTENCY WITH MODELS.
L = LOW:    TAF INCONSISTENT WITH ALL MODELS OR ALL BUT ONE MODEL.

DATE                              WED 05/22/24
UTC 1HRLY       06   07   08   09   10   11   12   13   14   15   16   17
EDT 1HRLY       02   03   04   05   06   07   08   09   10   11   12   13
CRW CONSISTENCY  H    H    H    H    H    H    H    H    H    H    H    H
HTS CONSISTENCY  H    H    H    H    H    H    H    H    H    H    H    H
BKW CONSISTENCY  H    H    H    H    H    H    H    H    H    H    H    H
EKN CONSISTENCY  H    H    H    H    H    H    H    H    H    H    H    H
PKB CONSISTENCY  H    H    H    H    H    H    H    H    H    H    H    H
CKB CONSISTENCY  H    H    H    H    H    H    H    H    H    H    H    H

AFTER 06Z THURSDAY...
IFR conditions possible with showers and thunderstorms
into Thursday with a cold front. IFR possible in showers and
thunderstorms Friday afternoon into Friday night and again on
Sunday.
-- End Changed Discussion --

&&

.RLX WATCHES/WARNINGS/ADVISORIES...
WV...None.
OH...None.
KY...None.
VA...None.

&&

$$

SYNOPSIS...RPY/JMC
NEAR TERM...ARJ/JMC
SHORT TERM...RPY
LONG TERM...RPY
AVIATION...LTC