Special Weather Statement, NWS Tulsa, OK

Area Forecast Discussion
National Weather Service Tulsa OK
215 PM CST Sat Feb 27 2021

.DISCUSSION...
A warm front continues to lift slowly north this afternoon, and
was currently analyzed along the AR/LA border into northern TX.
Surface dewpoints continue to slowly rise, and we'll eventually
see dewpoints into upper 50s/lower 60s across southeast OK.
Scattered convection has developed in the moistening airmass
across portions of southeast OK over the past 1-2 hours, and this
activity will lift northeast and expand in coverage as isentropic
lift persists through the evening. Decent layered shear and
MUCAPES at or above 1000 J/KG will support a limited hail
potential with some of the stronger storms.

May see a temporary lull in the scattered storms after midnight,
with additional convection developing along the southward
advancing cold front late tonight into Sunday morning. Could see a
few strong/marginally severe storms with this activity as well.

Precipitation looks to spread back north across the area later
Monday (and especially Monday night) as a compact upper low moves
across the southern Plains. Will continue to favor the slightly
slower ECMWF/UKMET solution over the faster GFS, although the 12Z
GFS is trending a touch slower. Thermal profiles/surface temps
continue to suggest a small chance of a wintry mix late Monday
night into early Tuesday across parts of northeast OK into
northwest AR, although confidence remains rather low.

Yet another upper low will impact the region during the
Thursday/Friday time-frame with increasing chances of showers and
a few storms.

&&

.PRELIMINARY POINT TEMPS/POPS...
TUL   47  57  33  58 /  60  10   0   0
FSM   55  64  38  60 /  90  70  20  10
MLC   54  62  37  56 /  70  60  10  20
BVO   43  55  29  57 /  50   0   0   0
FYV   51  59  32  56 /  90  60  10   0
BYV   52  59  33  55 /  90  60  10   0
MKO   51  58  33  56 /  80  40   0  10
MIO   46  54  29  56 /  70  20   0   0
F10   50  59  33  57 /  60  30   0  10
HHW   58  65  41  55 /  50  80  30  30

&&

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

LONG TERM....18

Hazardous Weather Outlook
National Weather Service Tulsa OK
1141 AM CST Sat Feb 27 2021

ARZ001-002-010-011-019-020-029-OKZ049-053>076-281115-
Adair OK-Benton AR-Carroll AR-Cherokee OK-Choctaw OK-Craig OK-
Crawford AR-Creek OK-Delaware OK-Franklin AR-Haskell OK-Latimer OK-
Le Flore OK-Madison AR-Mayes OK-McIntosh OK-Muskogee OK-Nowata OK-
Okfuskee OK-Okmulgee OK-Osage OK-Ottawa OK-Pawnee OK-Pittsburg OK-
Pushmataha OK-Rogers OK-Sebastian AR-Sequoyah OK-Tulsa OK-Wagoner OK-
Washington OK-Washington AR-
1141 AM CST Sat Feb 27 2021

This Outlook is for Northwest and West Central Arkansas as well as
much of Eastern Oklahoma.

.DAY ONE...This Afternoon and Tonight.

SEVERE THUNDERSTORM.
	RISK...Limited.
	AREA...Southeast of I-44.
	ONSET...Late Afternoon through Evening.

FLASH FLOOD.
	RISK...Limited.
	AREA...Southeast Oklahoma and Northwest Arkansas.
	ONSET...Late Afternoon through Evening.

HEAVY RAIN.
	RISK...Limited.
	AREA...Southeast Oklahoma and Northwest Arkansas.
	ONSET...Late Afternoon through Evening.

SIGNIFICANT WINDS.
	RISK...Limited.
	AREA...Eastern Oklahoma and Northwest Arkansas.
	ONSET...Afternoon.

FIRE WEATHER DANGER.
	RISK...Limited.
	AREA...Northwest of I-44.
	ONSET...Afternoon.

DISCUSSION...
Thunderstorm chances will begin to increase over southeast
Oklahoma later this afternoon and expand north during the evening,
impacting many areas across east central Oklahoma and northwest
Arkansas. There will be a limited threat of large hail with mainly
elevated storms, as well as potential for heavy rainfall. A more
conditional threat of damaging winds could develop tonight as a
warm front lifts north into southeast Oklahoma and west central
Arkansas. Additional storms are likely overnight as a cold front
pushes through northeast Oklahoma, though the severe weather
potential with the overnight storms appears low.

Increasing south wind and above normal temperatures will lead to
a limited threat of grassland fire spread, mainly north of I-44
through the afternoon.

SPOTTER AND EMERGENCY MANAGEMENT ACTION STATEMENT...
Local Spotter Activation May Be Needed.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.
SUNDAY...Thunderstorm Potential.
MONDAY through FRIDAY...No Hazards.

EXTENDED DISCUSSION...
Thunderstorm potential will continue into Sunday, mainly for
southeast Oklahoma and west central Arkansas, as the cold front
continues to push south. There will be a limited hail and damaging
wind threat with storms across far southeast Oklahoma Sunday
morning, before precipitation tapers off Sunday afternoon.

Additional ran chances arrive late Monday into Tuesday, and again
Thursday. Fire weather danger may be present during the week in
areas that miss out on significant rainfall.

weather.gov/tulsa contains additional information.

Special Weather Statement
National Weather Service Tulsa OK
219 PM CST Sat Feb 27 2021

OKZ076-272045-
Le Flore OK-
219 PM CST Sat Feb 27 2021

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN LE FLORE COUNTY
UNTIL 245 PM CST...

At 218 PM CST, a strong thunderstorm was located near Octavia, moving
northeast at 40 mph.

Penny size hail will be possible with this storm.

Locations in or near the path include...
Octavia...                        Big Cedar...

LAT...LON 3452 9488 3473 9461 3468 9445 3466 9446
      3451 9461 3451 9486
TIME...MOT...LOC 2018Z 221DEG 34KT 3453 9474

Special Weather Statement
National Weather Service Tulsa OK
415 PM CST Sat Feb 27 2021

OKZ068>070-072-074-272245-
Haskell OK-Adair OK-Muskogee OK-Sequoyah OK-Cherokee OK-
415 PM CST Sat Feb 27 2021

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN HASKELL...
NORTHWESTERN SEQUOYAH...SOUTHERN ADAIR...SOUTHEASTERN CHEROKEE AND
SOUTHEASTERN MUSKOGEE COUNTIES UNTIL 445 PM CST...

At 415 PM CST, a strong thunderstorm was located over Tamaha, moving
northeast at 65 mph.

Nickel size hail and winds in excess of 40 mph will be possible with
this storm.

Locations in or near the path include...
Sallisaw...                       Vian...
Gore...                           Webbers Falls...
Marble City...                    Tamaha...
Brushy...                         Cookson...
Brushy Lake State Park...         Cherokee Landing State Park...
Bunch...                          Lake Tenkiller State Park...
Box...                            Mc Key...

This includes Interstate 40 in Oklahoma between mile markers 285 and
310.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

&&

LAT...LON 3530 9492 3537 9524 3584 9493 3564 9448
TIME...MOT...LOC 2215Z 221DEG 55KT 3538 9496

Special Weather Statement
National Weather Service Tulsa OK
445 PM CST Sat Feb 27 2021

ARZ001-010-019-OKZ068-069-272315-
Benton AR-Washington AR-Crawford AR-Adair OK-Cherokee OK-
445 PM CST Sat Feb 27 2021

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN BENTON...
NORTHWESTERN CRAWFORD...WASHINGTON...ADAIR AND SOUTHEASTERN CHEROKEE
COUNTIES UNTIL 515 PM CST...

At 443 PM CST, a strong thunderstorm was located 7 miles south of
Stilwell, moving northeast at 60 mph.

Penny size hail will be possible with this storm.

Locations in or near the path include...
Fayetteville...                   Springdale...
Siloam Springs...                 Stilwell...
Farmington...                     Prairie Grove...
Elkins...                         Tontitown...
West Fork...                      Lincoln...
Westville...                      Greenland...
West Siloam Springs...            Watts...
Adair State Park...               Christie...
Cincinnati...                     Maryetta...
Bunch...                          Baron...

This includes Interstate 49 between mile markers 51 and 71.

LAT...LON 3563 9447 3564 9448 3564 9493 3616 9458
      3616 9456 3618 9457 3616 9392
TIME...MOT...LOC 2243Z 224DEG 62KT 3572 9459