Special Weather Statement, NWS Tulsa, OK

Area Forecast Discussion
National Weather Service Tulsa OK
246 AM CDT Sat Jun 26 2021

.DISCUSSION...
A period of unsettled weather is on tap for eastern
Oklahoma and western Arkansas through this forecast
period with numerous rounds of showers and storms
anticipated this weekend and into next week. While there
is the potential for strong to severe storms during this
time, heavy rain and the potential for flooding across
northeast Oklahoma will be more of a concern. A flash
flood watch will be issued this morning for portions of
northeast Oklahoma that will run through tonight. This
watch may end up be extended in time and in coverage as we
move into Sunday.

Storms are ongoing this morning across northeast Oklahoma as
an MCV moves across Osage County. Additional showers and
storms are expected to spread into the area from the west
later this morning. Locally heavy rains will be possible
with the storms this morning. These initial storms are expected
to diminish late morning/early afternoon as they push east
into Arkansas.

Additional thunderstorms are then expected to develop later
this afternoon and evening in the vicinity of remnant outflow
boundaries and in the vicinity of a slow moving cold front that
is forecast to stall to the west of the area this evening. The
showers and storms that develop near the stalling front
will then spread into eastern Oklahoma and eventually portions
of western Arkansas tonight. With precipitable water values
around two inches, heavy rain will be a concern with this
activity.

The shower and storm chances continue Sunday and into next week
as the upper level pattern becomes rather stagnant with a broad
trough over the region through mid-week. This trough and a
weakening surface front just to our west will interact with
the moist airmass in place across the region to produce the
daily rain chances. The highest chances will generally be
across northeast Oklahoma and lowest across southeast Oklahoma
and west-central Arkansas.

Late next week, there are indications that a significant
upper level trough will evolve across the eastern US that
will push a cold front into the area which will continue
the potential for showers and storms.

Have stayed close to the NBM guidance for much of the forecast
period.

&&

.PRELIMINARY POINT TEMPS/POPS...
TUL   88  72  85  71 /  90  90  90  70
FSM   93  75  90  72 /  30  30  70  50
MLC   89  72  86  70 /  30  50  70  60
BVO   85  70  83  68 / 100 100  70  60
FYV   89  70  86  68 /  60  60  80  60
BYV   89  71  86  69 /  60  60  80  60
MKO   88  72  85  70 /  60  80  80  70
MIO   85  70  84  68 / 100  90  90  70
F10   89  71  84  69 /  60  90  80  70
HHW   90  74  89  71 /  20  30  40  40

&&

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

LONG TERM....10

Hazardous Weather Outlook
National Weather Service Tulsa OK
458 AM CDT Sat Jun 26 2021

ARZ001-002-010-011-019-020-029-OKZ049-053>076-271000-
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-
458 AM CDT Sat Jun 26 2021

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

.DAY ONE...Today and Tonight.

SEVERE THUNDERSTORM.
	RISK...Limited.
	AREA...Northeast Oklahoma.
	ONSET...Ongoing.

FLASH FLOOD.
	RISK...Limited.
	AREA...Northeast Oklahoma.
	ONSET...Ongoing.

HEAVY RAIN.
	RISK...Significant.
	AREA...Northeast Oklahoma.
	ONSET...Ongoing.

DISCUSSION...
Widespread showers and storms are ongoing across northeast
Oklahoma this morning, mainly to the north of Interstate
44. The showers and storms are expected to continue through
most of the morning across northeast Oklahoma as additional
activity spreads into the region from the west. Heavy rain
will be possible with this activity with flash flooding also
possible. Some of the storms could also be strong to severe with
strong gusty winds the concern.

Additional showers and storms are expected later this afternoon
and into tonight with development in the vicinity of a
frontal boundary stalling across central Oklahoma and near
any left over outflow boundaries. The main concern with these storms
will be heavy rain. However, a strong to severe storm is not out
of the question.

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

.DAYS TWO THROUGH SEVEN...Sunday through Friday.
SUNDAY...Thunderstorm Potential...Heavy Rain Potential.
MONDAY THROUGH FRIDAY...Thunderstorm Potential.

EXTENDED DISCUSSION...
An active weather pattern will persist on Sunday and
into next week, leading to multiple periods of showers and
thunderstorms. Heavy rainfall will be the primary concern,
especially Sunday. Through the middle of next week, rainfall
totals in the 3 to 5 inch range are forecast in northeast
Oklahoma and far northwest Arkansas, with totals from 1 to 3
inches across the rest of the area. Both flash flooding and
mainstem river flooding may result. In addition, strong to severe
storms may occur, but the overall threat currently appears
secondary to the heavy rain and flooding concerns.

weather.gov/tulsa contains additional information.

Special Weather Statement
National Weather Service Tulsa OK
1215 AM CDT Sat Jun 26 2021

OKZ054-055-059-060-064-260600-
Tulsa OK-Osage OK-Pawnee OK-Washington OK-Creek OK-
1215 AM CDT Sat Jun 26 2021

...SIGNIFICANT WEATHER ADVISORY FOR OSAGE...NORTHERN CREEK...WESTERN
WASHINGTON...SOUTHEASTERN PAWNEE AND NORTHWESTERN TULSA COUNTIES
UNTIL 100 AM CDT...

At 1214 AM CDT, strong thunderstorms and an associated outflow
boundary were located along a line extending from 7 miles south of
Cedar Vale to 3 miles south of Osage to 2 miles northeast of
Drumright. Movement was east at 40 mph.

Winds in excess of 40 mph will be possible with these storms and
outflow boundary.

Locations in or near the path include...
Tulsa...                          Bartlesville...
Sand Springs...                   Pawhuska...
Skiatook...                       Hominy...
Cleveland...                      Mannford...
Barnsdall...                      Sperry...
Oilton...                         Wynona...
Ochelata...                       Jennings...
Avant...                          Westport...
Osage...                          Hallett...
Blackburn...                      Terlton...

This includes Interstate 44 between mile markers 211 and 218.

LAT...LON 3700 9596 3622 9599 3601 9605 3599 9662
      3616 9662 3616 9672 3700 9657
TIME...MOT...LOC 0514Z 267DEG 36KT 3700 9649 3624 9640 3602 9656

Special Weather Statement
National Weather Service Tulsa OK
453 AM CDT Sat Jun 26 2021

OKZ054-059-060-064>066-261100-
Tulsa OK-Okmulgee OK-Osage OK-Okfuskee OK-Pawnee OK-Creek OK-
453 AM CDT Sat Jun 26 2021

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN OSAGE...CREEK...
SOUTHEASTERN PAWNEE...NORTHWESTERN OKMULGEE...WEST CENTRAL TULSA AND
OKFUSKEE COUNTIES UNTIL 600 AM CDT...

At 453 AM CDT, strong thunderstorms were located along a line
extending from near Yale to 5 miles south of Stroud to 4 miles south
of Prague. Movement was northeast at 35 mph.

Wind gusts up to 50 mph will be possible with these storms.

Locations in or near the path include...
Sand Springs...                   Bristow...
Okemah...                         Sapulpa...
Okfuskee...                       Cleveland...
Mannford...                       Drumright...
Boley...                          Kellyville...
Oilton...                         Depew...
Paden...                          Jennings...
Westport...                       Osage...
Slick...                          Hallett...
Terlton...                        Castle...

This includes the following highways,
 Interstate 40 in Oklahoma between mile markers 212 and 229.
 Interstate 44 between mile markers 178 and 212.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3641 9612 3592 9609 3539 9613 3536 9644
      3546 9644 3546 9647 3543 9650 3543 9652
      3546 9654 3544 9657 3541 9654 3539 9654
      3541 9658 3540 9662 3616 9662 3616 9674
      3623 9675
TIME...MOT...LOC 0953Z 240DEG 30KT 3613 9669 3567 9665 3542 9672

Special Weather Statement
National Weather Service Tulsa OK
542 AM CDT Sat Jun 26 2021

OKZ060-061-064>067-070-071-261130-
Tulsa OK-Muskogee OK-Okmulgee OK-Rogers OK-Okfuskee OK-Creek OK-
Wagoner OK-McIntosh OK-
542 AM CDT Sat Jun 26 2021

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN ROGERS...EASTERN
CREEK...NORTHWESTERN MCINTOSH...WESTERN WAGONER...NORTHWESTERN
MUSKOGEE...OKMULGEE...TULSA AND EASTERN OKFUSKEE COUNTIES UNTIL 630
AM CDT...

At 541 AM CDT, strong thunderstorms were located along a line
extending from 4 miles southwest of Sand Springs to 5 miles west of
Beggs to 3 miles east of Okemah. Movement was east at 30 mph.

Winds in excess of 40 mph will be possible with these storms.

Locations in or near the path include...
Tulsa...                          Broken Arrow...
Sand Springs...                   Okmulgee...
Bixby...                          Sapulpa...
Jenks...                          Okfuskee...
Glenpool...                       Coweta...
Catoosa...                        Henryetta...
Verdigris...                      Haskell...
Kiefer...                         Morris...
Beggs...                          Mounds...
Dewar...                          Schulter...

This includes the following highways,
 Interstate 40 in Oklahoma between mile markers 221 and 254.
 Interstate 44 between mile markers 206 and 246.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3574 9622 3613 9620 3616 9607 3616 9600
      3618 9600 3628 9561 3586 9560 3543 9569
      3536 9630
TIME...MOT...LOC 1041Z 251DEG 27KT 3608 9615 3576 9616 3543 9625