Special Weather Statement, NWS Tulsa, OK

Area Forecast Discussion
National Weather Service Tulsa OK
1227 AM CDT Wed Apr 14 2021

.AVIATION...
CONCERNING TAF SITES KTUL/KRVS/KBVO/KMLC/KXNA/KFYV/KFSM/KROG.
Widespread rain with embedded thunderstorms will influence
terminals through much of the early morning hours. A gradual shift
east and southward is expected later tonight before rains ends
from west to east by mid Wed morning. Flight conditions remain low
VFR within much of the precip w/ periodic MVFR levels. Fcst will
retain this trend as confidence remains low with guidance
suggesting lower ceilings developing later tonight. Expect VFR
ceilings to continue Wed afternoon into evening w/ scattered light
showers again possible during the latter portion of the fcst
period.

&&

.PREV DISCUSSION... /Issued 936 PM CDT Tue Apr 13 2021/

..UPDATE...

DISCUSSION...
At mid evening...widespread rain showers along with scattered
thunderstorms were ongoing from the Texas Panhandle through
Northeast Oklahoma...moving northeast within the mid/upper level
mean layer flow. This activity was continuing to develop along a
mid level frontogenetic forcing axis within an expanding area of
mid level warm advection. Marginal instability remained elevated
which was allowing for reports of pea size hail within the areas
of convection. Across Southeast Oklahoma and Northwest
Arkansas...mostly cloudy with temps in the upper 50s and 60s were
still common.

Overnight tonight...the mid level forcing axis should shift
eastward into Northwest Arkansas before sliding southeast late
tonight and early Wednesday morning. In response...rain showers
with isolated to scattered thunder will remain possible over
Northeast Oklahoma...while expanding in coverage across Northwest
Arkansas and also Southeast Oklahoma late this evening/overnight
tonight. Elevated instability overnight looks to remain meager at
best and severe weather is not anticipated tonight. Have adjusted
pop/wx grids based on latest trends and the mentioned above for
the overnight hours. Also...have shifted overnight QPF slightly
northward as well with the ongoing/expected precip.

Temps overnight look to fall into the lower 50s with the rainfall
and then should slowly fall through tonight into the mid 40s to
near 50 deg across Northeast Oklahoma and far Northwest Arkansas.
South of Interstate 40...slightly higher dewpoints combined with
the cloud cover should hold temps in the low to mid 50s from north
to south. Thus...for the evening update...have added minor
adjustments to lows tonight and hourly temp trends based on latest
thinking and observations. The rest of the forecast seems to be
handling well at this time.

&&

.PRELIMINARY POINT TEMPS/POPS...
TUL   44  63  47  57 /  20  10  60  70
FSM   46  68  49  59 /  20   0  50  80
MLC   48  67  50  58 /  30  10  60  80
BVO   40  62  45  54 /  10  10  60  70
FYV   40  65  43  57 /  20   0  50  80
BYV   41  63  44  56 /  10   0  40  70
MKO   45  65  48  56 /  20  10  60  80
MIO   40  62  44  55 /  10   0  50  80
F10   46  65  49  58 /  20  10  60  70
HHW   51  68  51  58 /  30  10  60  90

&&

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

AVIATION.....07

Hazardous Weather Outlook
National Weather Service Tulsa OK
944 PM CDT Tue Apr 13 2021

ARZ001-002-010-011-019-020-029-OKZ049-053>076-141015-
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-
944 PM CDT Tue Apr 13 2021

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

.DAY ONE...Tonight.

HEAVY RAIN.
	RISK...Limited.
	AREA...Along and South of Interstate 44 and also Northwest
		   Arkansas.
	ONSET...Ongoing.

THUNDERSTORMS WITH DANGEROUS LIGHTNING.
	RISK...Elevated.
	AREA...Majority of Eastern Oklahoma and also Northwest
		   Arkansas.
	ONSET...Ongoing.

DISCUSSION...
Rain showers with isolated to scattered thunderstorms will
continue to spread across eastern Oklahoma and northwest Arkansas
overnight tonight. Severe weather is not anticipated. Locally
heavy rainfall with amounts greater than a half inch will however
remain possible across much of the region through tonight.

SPOTTER AND EMERGENCY MANAGEMENT ACTION STATEMENT...
Spotter Activation Not Expected.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.
WEDNESDAY...Thunderstorm Potential.
THURSDAY...No Hazards.
FRIDAY...Thunderstorm Potential.
SATURDAY THROUGH MONDAY...No Hazards.

EXTENDED DISCUSSION...
Showers and isolated storms will linger into Wednesday morning
across southeast Oklahoma and northwest Arkansas. Severe weather
is not expected with these storms. Showers will again be possible
across much of the region Wednesday night as a weak disturbance
moves through the region. Isolated thunder may be possible near
the Red River late Wednesday night.

Additional rain chances are forecast Thursday night through Friday
night as a more defined upper level system and cold front
approach and move through the region. A few thunderstorms will be
possible Friday into Friday evening mainly across eastern
Oklahoma. Rain showers look to taper off from west to east during
the overnight hours Friday night.

Much colder than normal temperatures are expected Sunday and
Monday mornings with Monday being the colder of the two. There is
a non zero chance that a frost or light freeze could occur across
parts of northeast Oklahoma and far northwest Arkansas. If you
have sensitive vegetation continue to monitor the latest forecasts
and be prepared to protect those plants from the cold.

weather.gov/tulsa contains additional information.

Special Weather Statement
National Weather Service Tulsa OK
140 AM CDT Wed Apr 14 2021

OKZ053-140715-
Choctaw OK-
140 AM CDT Wed Apr 14 2021

...SIGNIFICANT WEATHER ADVISORY FOR EASTERN CHOCTAW COUNTY UNTIL 215
AM CDT...

At 140 AM CDT, a strong thunderstorm was located 7 miles southeast of
Goodland, moving northeast at 35 mph.

Penny size hail will be possible with this storm.

Locations in or near the path include...
Fort Towson...                    Sawyer...
Hugo Lake State Park...           Raymond Gary State Park...
Grant...                          Ord...
Fallon...                         Huskey...
Swink...                          Frogville...

LAT...LON 3387 9546 3389 9546 3387 9550 3389 9551
      3388 9554 3393 9556 3393 9560 3392 9563
      3416 9520 3416 9516 3394 9516 3396 9523
      3394 9525 3389 9526 3391 9527 3387 9529
      3389 9533 3387 9534
TIME...MOT...LOC 0640Z 236DEG 30KT 3389 9550

Special Weather Statement
National Weather Service Tulsa OK
251 AM CDT Wed Apr 14 2021

OKZ076-140830-
Le Flore OK-
251 AM CDT Wed Apr 14 2021

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN LE FLORE COUNTY
UNTIL 330 AM CDT...

At 251 AM CDT, a strong thunderstorm was located over Octavia, moving
northeast at 40 mph.

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

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

LAT...LON 3451 9487 3488 9445 3459 9446 3451 9461
TIME...MOT...LOC 0751Z 228DEG 39KT 3452 9473