Siloam Springs, Arkansas 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

821
FXUS64 KTSA 261118
AFDTSA

Area Forecast Discussion
National Weather Service Tulsa OK
618 AM CDT Tue May 26 2026

...New AVIATION...

.KEY MESSAGES...
Updated at 615 AM CDT Tue May 26 2026

 - Low to medium chances of showers and thunderstorms this
   afternoon areawide. Severe weather is not expected, but heavy
   rainfall and localized flash flooding will be possible.

 - Daily rain and storm chances continue through the end of the
   week. Locally heavy rainfall will remain the primary concern,
   which could lead to isolated flash flooding.

 - Temperatures remain near or slightly below average over the
   next several days.

&&

.SHORT TERM...
(Through Tuesday)
Issued at 1142 PM CDT Mon May 25 2026

Patchy valley fog may once again develop overnight and early
Tuesday morning, but should not be as widespread or locally dense
as previous nights. An upper low currently located over northeast
Texas will move north over E OK and NW AR during the day Tuesday.
Moisture advection will continue as this occurs and results in
widespread shower and thunderstorm chances Tuesday afternoon and
evening. Slow storm motions and potential for training storms may
lead to heavy rainfall and localized flash flooding, especially
across NW AR. Poor wind shear will keep severe weather potential
very low, but locally gusty winds may develop under the stronger
showers/storms. Temperatures will likely be a few degrees cooler
than Monday, but still near average in the lower 80s.

&&

.LONG TERM...
(Tuesday Night through Monday)
Issued at 1142 PM CDT Mon May 25 2026

As the aforementioned upper low drifts north, elongated upper
level troughing will expand across the desert southwest and pivot
into the southern high plains. The trough moves northeastward late
Tuesday into Wednesday and aids in the development of
thunderstorms over N TX/W OK. This activity will gradually move
toward the FA and rain chances increase from SW to NE late Tuesday
night and during the day Wednesday. Guidance then suggests a low
level cyclone will remain in the vicinity for several days with
daily rain/storm chances persisting into this weekend. The exact
progression of thunderstorm activity and focus for heaviest rains
will likely be driven by subtle mesoscale features through late
week. A pattern change featuring increased ridging may allow for
drier conditions as we move into early June, but model solutions
vary at this range, with generally weak flow remaining in place.
The NBM maintains at least low rain and thunder chances through
next Monday, which seems appropriate for now.

While organized severe weather is unlikely through the extended
period, excessive rainfall will be a concern as PWATs climb to
near climatological maximums. Flash flood potential is likely to
be maximized during the Wednesday-Friday timeframe. For the most
part, temperatures stay within a few degrees of 80 through the
forecast period, but Thursday and Friday may tend to be relatively
cooler due to increased cloud cover and precipitation.

&&

.AVIATION...
(12Z TAFS)
Issued at 615 AM CDT Tue May 26 2026

Expanding mid cloud ceilings will overspread much of the region
today. Showers and a few thunderstorms may spread into western AR
this morning with scattered showers and storms across the entire
local area this afternoon through early evening. Overall expect
VFR conditions to prevail away from the influence of heavier
rains. Precip coverage decreases for much of the night before
additional showers and storms move into SE OK before sunrise
Wednesday.

&&

.PRELIMINARY POINT TEMPS/POPS...
TUL   83  65  81  66 /  30  10  80  80
FSM   83  66  84  67 /  50  10  80  80
MLC   84  66  81  66 /  40  30  90  70
BVO   83  61  82  64 /  20  10  60  70
FYV   80  62  83  66 /  60  10  60  80
BYV   78  61  82  64 /  60  20  40  60
MKO   82  64  81  65 /  30  10  80  80
MIO   82  62  83  65 /  20  10  40  60
F10   83  64  80  64 /  30  20  90  80
HHW   83  67  79  66 /  30  40  80  60

&&

.TSA WATCHES/WARNINGS/ADVISORIES...
OK...None.
AR...None.
&&

$$

SHORT TERM...43
LONG TERM....43
AVIATION...07