Alert archive / Oklahoma / River Flood Advisories in 2021

River Flood Advisory 18, NWS Tulsa, OK

May 27, 2021Adair County, Cherokee County, Delaware County, Oklahoma

NWS Tulsa, OK issued this river flood advisory at May 27, 2021, 2:54 PM CDT for Adair County, Cherokee County, Delaware County, Oklahoma. It was in force for 35 hr.

The area

The outline as issued.

The facts

Issued: May 27, 2021, 2:54 PM CDT (19:54 UTC)
Expired: May 29, 2021, 2:21 AM CDT
In force: 35 hr
Issued by: NWS Tulsa, OK
Area: Storm-based polygon

Counties Adair County, OK, Cherokee County, OK, Delaware County, OK

The radar

The Tulsa radar (KINX), 72 km from the middle of the area, began a volume at 19:55 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The river

Written for the forecast point Illinois River (AR OK) at Chewey (CWYO2). The gauge peaked at 9.34 ft at May 28, 2021, 7:00 PM CDT.

Action stage: 9 ft
Minor stage: 12 ft
Moderate stage: 15 ft
Major stage: 20 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 07196090, one reading an hour, from a day before the product to a day after it ended. Flood stages are today's.

The text

As transmitted.

546 
WGUS84 KTSA 271954
FLSTSA

Flood Advisory
National Weather Service Tulsa OK
254 PM CDT Thu May 27 2021

...The Flood Advisory is cancelled for the following rivers in 
Oklahoma...

  Illinois River near Tahlequah affecting Cherokee County.

...The National Weather Service in Tulsa has issued a Flood Advisory 
for the following rivers in Oklahoma...

  Illinois River at Chewey affecting Adair, Cherokee and Delaware 
  Counties.

  Flint Creek near Kansas affecting Cherokee and Delaware Counties.


OKC021-272100-
/O.CAN.KTSA.FL.Y.0016.000000T0000Z-210527T1954Z/
/TALO2.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
254 PM CDT Thu May 27 2021

...The Flood Advisory for the Illinois River near Tahlequah has been 
cancelled...

The Flood Advisory is cancelled for
  the Illinois River near Tahlequah.
* At 2:30 PM CDT Thursday the stage was 6.8 feet.
* Flood stage is 11.0 feet.
* Forecast...The river is expected to rise above flood stage early 
  Saturday morning to a crest of 11.6 feet early Saturday afternoon. 
  It will then fall below flood stage Saturday evening. Please see 
  the Flood Warning for further information.


&&

LAT...LON 3611 9487 3606 9481 3576 9487 3576 9496
      3603 9496

$$

OKC001-021-041-280800-
/O.NEW.KTSA.FL.Y.0018.210527T1954Z-210530T0600Z/
/CWYO2.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
254 PM CDT Thu May 27 2021

The National Weather Service in Tulsa has issued a

* Flood Advisory for
  the Illinois River at Chewey.
* From this afternoon to early Sunday morning.
* At 2:15 PM CDT Thursday the stage was 5.8 feet.
* Action stage is 9.0 feet.
* Flood stage is 12.0 feet.
* Forecast...The river is expected to rise to a crest of 10.6 feet 
  early Saturday morning, which is above action stage but below 
  flood stage.
* Impact...At 9.0 feet, no flooding occurs but all recreational 
  floating along the Illinois River ceases due to strong turbulence.


&&

LAT...LON 3619 9472 3611 9471 3606 9481 3611 9487

$$

OKC021-041-280800-
/O.NEW.KTSA.FL.Y.0017.210527T1954Z-210528T1800Z/
/KNSO2.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
254 PM CDT Thu May 27 2021

The National Weather Service in Tulsa has issued a

* Flood Advisory for
  the Flint Creek near Kansas.
* From this afternoon to early tomorrow afternoon.
* At 2:30 PM CDT Thursday the stage was 6.6 feet.
* Action stage is 8.0 feet.
* Flood stage is 11.0 feet.
* Forecast...The river is expected to rise to a crest of 8.8 feet 
  just after midnight tonight, which is above action stage but below 
  flood stage.
* Impact...At 8.0 feet, Flint Creek threatens individual campsites 
  and becomes dangerous for recreational floating.


&&

LAT...LON 3629 9461 3620 9456 3607 9482 3619 9483

$$

Lacy

6 follow-up statements

824 
WGUS84 KTSA 280109
FLSTSA

Flood Advisory
National Weather Service Tulsa OK
809 PM CDT Thu May 27 2021

...The Flood Advisory continues for the following rivers in 
Oklahoma...

  Illinois River at Chewey affecting Adair, Cherokee and Delaware 
  Counties.


OKC001-021-041-281315-
/O.CON.KTSA.FL.Y.0018.000000T0000Z-210530T0600Z/
/CWYO2.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
809 PM CDT Thu May 27 2021

...The Flood Advisory remains in effect...

The Flood Advisory continues for
  the Illinois River at Chewey.
* Until early Sunday morning.
* At 2:15 PM CDT Thursday the stage was 5.8 feet.
* Action stage is 9.0 feet.
* Flood stage is 12.0 feet.
* Forecast...The river is expected to rise to a crest of 10.6 feet 
  early Saturday morning.
* Impact...At 9.0 feet, no flooding occurs but all recreational 
  floating along the Illinois River ceases due to strong turbulence.


&&

LAT...LON 3619 9472 3611 9471 3606 9481 3611 9487

$$

RJS

758 
WGUS84 KTSA 280652 RRA
FLSTSA

Flood Advisory
National Weather Service Tulsa OK
152 AM CDT Fri May 28 2021

...The Flood Advisory continues for the following rivers in 
Oklahoma...

  Illinois River at Chewey affecting Adair, Cherokee and Delaware 
  Counties.


OKC001-021-041-281900-
/O.CON.KTSA.FL.Y.0018.000000T0000Z-210530T0600Z/
/CWYO2.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
152 AM CDT Fri May 28 2021

...The Flood Advisory remains in effect...

The Flood Advisory continues for
  the Illinois River at Chewey.
* Until early Sunday morning.
* At 1:15 AM CDT Friday the stage was 6.3 feet.
* Action stage is 9.0 feet.
* Flood stage is 12.0 feet.
* Forecast...The river is expected to rise to a crest of 9.8 feet 
  just after midnight tonight.
* Impact...At 9.0 feet, no flooding occurs but all recreational 
  floating along the Illinois River ceases due to strong turbulence.


&&

LAT...LON 3619 9472 3611 9471 3606 9481 3611 9487

$$

623 
WGUS84 KTSA 281359 RRA
FLSTSA

Flood Advisory
National Weather Service Tulsa OK
859 AM CDT Fri May 28 2021

...The Flood Advisory is cancelled for the following rivers in 
Oklahoma...

  Flint Creek near Kansas affecting Cherokee and Delaware Counties.

...The Flood Advisory continues for the following rivers in 
Oklahoma...

  Illinois River near Tahlequah affecting Cherokee County.

  Illinois River at Chewey affecting Adair, Cherokee and Delaware 
  Counties.


OKC021-041-281500-
/O.CAN.KTSA.FL.Y.0017.000000T0000Z-210528T1359Z/
/KNSO2.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
859 AM CDT Fri May 28 2021

...The Flood Advisory for the Flint Creek near Kansas has been 
cancelled...

The Flood Advisory is cancelled for
  the Flint Creek near Kansas.
* At 8:30 AM CDT Friday the stage was 7.4 feet.
* Flood stage is 11.0 feet.
* Forecast...The river crested early this morning at 7.53 feet and 
  is falling. The river will remain below action stage.


&&

LAT...LON 3629 9461 3620 9456 3607 9482 3619 9483

$$

OKC021-290200-
/O.CON.KTSA.FL.Y.0019.000000T0000Z-210531T0600Z/
/TALO2.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
859 AM CDT Fri May 28 2021

...The Flood Advisory remains in effect...

The Flood Advisory continues for
  the Illinois River near Tahlequah.
* Until early Monday morning.
* At 8:30 AM CDT Friday the stage was 7.9 feet.
* Action stage is 9.0 feet.
* Flood stage is 11.0 feet.
* Forecast...The river is expected to rise to a crest of 10.9 feet 
  early tomorrow afternoon. This is above action stage but just 
  below flood stage. The river is then expected to drop below action 
  stage Sunday afternoon.
* Impact...At 9.0 feet, no flooding occurs but all recreational 
  floating along the Illinois River ceases at and above 9.5 feet.
* Impact...At 11.0 feet, minor flooding occurs from near Hanging 
  Rock downstream towards Tahlequah. Floating the river is too 
  hazardous due to strong turbulence.


&&

LAT...LON 3611 9487 3606 9481 3576 9487 3576 9496
      3603 9496

$$

OKC001-021-041-290200-
/O.CON.KTSA.FL.Y.0018.000000T0000Z-210530T0600Z/
/CWYO2.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
859 AM CDT Fri May 28 2021

...The Flood Advisory remains in effect...

The Flood Advisory continues for
  the Illinois River at Chewey.
* Until early Sunday morning.
* At 8:15 AM CDT Friday the stage was 7.0 feet.
* Action stage is 9.0 feet.
* Flood stage is 12.0 feet.
* Forecast...The river is expected to rise to a crest of 9.8 feet 
  just after midnight tonight. This is above action stage but below 
  flood stage. The river is then expected to drop below action stage 
  by midday Saturday.
* Impact...At 9.0 feet, no flooding occurs but all recreational 
  floating along the Illinois River ceases due to strong turbulence.


&&

LAT...LON 3619 9472 3611 9471 3606 9481 3611 9487

$$

Lacy

387 
WGUS84 KTSA 281947 RRA
FLSTSA

Flood Advisory
National Weather Service Tulsa OK
247 PM CDT Fri May 28 2021

...The Flood Advisory continues for the following rivers in 
Oklahoma...

  Illinois River near Tahlequah affecting Cherokee County.

  Illinois River at Chewey affecting Adair, Cherokee and Delaware 
  Counties.


OKC021-290800-
/O.EXT.KTSA.FL.Y.0019.000000T0000Z-210530T1800Z/
/TALO2.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
247 PM CDT Fri May 28 2021

...The Flood Advisory is now in effect until early Sunday 
afternoon...

The Flood Advisory continues for
  the Illinois River near Tahlequah.
* Until early Sunday afternoon.
* At 2:30 PM CDT Friday the stage was 8.0 feet.
* Action stage is 9.0 feet.
* Flood stage is 11.0 feet.
* Forecast...The river is expected to rise to a crest of 10.5 feet 
  tomorrow morning, which is in action stage but just below flood 
  stage. The river is then expected to fall below action stage by 
  early Sunday morning.
* Impact...At 9.0 feet, no flooding occurs but all recreational 
  floating along the Illinois River ceases at and above 9.5 feet.
* Impact...At 11.0 feet, minor flooding occurs from near Hanging 
  Rock downstream towards Tahlequah. Floating the river is too 
  hazardous due to strong turbulence.


&&

LAT...LON 3611 9487 3606 9481 3576 9487 3576 9496
      3603 9496

$$

OKC001-021-041-290800-
/O.EXT.KTSA.FL.Y.0018.000000T0000Z-210530T0000Z/
/CWYO2.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
247 PM CDT Fri May 28 2021

...The Flood Advisory is now in effect until tomorrow evening...

The Flood Advisory continues for
  the Illinois River at Chewey.
* Until tomorrow evening.
* At 2:15 PM CDT Friday the stage was 8.6 feet.
* Action stage is 9.0 feet.
* Flood stage is 12.0 feet.
* Forecast...The river is expected to rise to a crest of 9.6 feet 
  just after midnight tonight, which is in action stage but below 
  flood stage. The river is then expected to fall below action stage 
  by tomorrow morning.
* Impact...At 9.0 feet, no flooding occurs but all recreational 
  floating along the Illinois River ceases due to strong turbulence.


&&

LAT...LON 3619 9472 3611 9471 3606 9481 3611 9487

$$

Lacy

432 
WGUS84 KTSA 290109
FLSTSA

Flood Advisory
National Weather Service Tulsa OK
809 PM CDT Fri May 28 2021

...The Flood Advisory continues for the following rivers in 
Oklahoma...

  Illinois River near Tahlequah affecting Cherokee County.

  Illinois River at Chewey affecting Adair, Cherokee and Delaware 
  Counties.


OKC021-291315-
/O.EXT.KTSA.FL.Y.0019.000000T0000Z-210530T0600Z/
/TALO2.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
809 PM CDT Fri May 28 2021

...The Flood Advisory is now in effect until early Sunday morning...

The Flood Advisory continues for
  the Illinois River near Tahlequah.
* Until early Sunday morning.
* At 7:30 PM CDT Friday the stage was 8.7 feet.
* Action stage is 9.0 feet.
* Flood stage is 11.0 feet.
* Forecast...The river is expected to rise to a crest of 10.1 feet 
  tomorrow morning and fall below 9.0 feet tomorrow evening.
* Impact...At 11.0 feet, minor flooding occurs from near Hanging 
  Rock downstream towards Tahlequah. Floating the river is too 
  hazardous due to strong turbulence.


&&

LAT...LON 3611 9487 3606 9481 3576 9487 3576 9496
      3603 9496

$$

OKC001-021-041-291315-
/O.EXT.KTSA.FL.Y.0018.000000T0000Z-210529T1800Z/
/CWYO2.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
809 PM CDT Fri May 28 2021

...The Flood Advisory is now in effect until early tomorrow 
afternoon...

The Flood Advisory continues for
  the Illinois River at Chewey.
* Until early tomorrow afternoon.
* At 7:15 PM CDT Friday the stage was 9.3 feet.
* Action stage is 9.0 feet.
* Flood stage is 12.0 feet.
* Forecast...The river is near crest and expected to fall to 8.0 
  feet around sunrise Saturday.
* Impact...At 9.0 feet, no flooding occurs but all recreational 
  floating along the Illinois River ceases due to strong turbulence.


&&

LAT...LON 3619 9472 3611 9471 3606 9481 3611 9487

$$

029 
WGUS84 KTSA 290721
FLSTSA

Flood Advisory
National Weather Service Tulsa OK
221 AM CDT Sat May 29 2021

...The Flood Advisory is cancelled for the following rivers in 
Oklahoma...

  Illinois River at Chewey affecting Adair, Cherokee and Delaware 
  Counties.

OKC001-021-041-290830-
/O.CAN.KTSA.FL.Y.0018.000000T0000Z-210529T0721Z/
221 AM CDT Sat May 29 2021

...The Flood Advisory for the Illinois River at Chewey has been 
cancelled...

The Flood Advisory is cancelled for
  the Illinois River at Chewey.
* At 1:15 AM CDT Saturday the stage was 8.0 feet.
* Flood stage is 12.0 feet.
* Forecast...The river has fallen below action stage, and will 
  continue to fall.


&&

LAT...LON 3619 9472 3611 9471 3606 9481 3611 9487

$$

What forecasters said that day

The local office's own words before this river flood advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Tulsa, OK wrote its last area forecast discussion before this river flood advisory went out at May 27, 2:14 PM CDT, 40 minutes earlier.

Area forecast discussion, May 27, 2:14 PM CDT, 40 minutes before

Area Forecast Discussion
National Weather Service Tulsa OK
214 PM CDT Thu May 27 2021

.DISCUSSION...
Widespread strong to severe thunderstorms ongoing are expected to
continue across eastern Oklahoma into the evening hours. It
appears there will be multiple rounds of storms for northeastern
Oklahoma over the next several hours with all hazards possible
including a few tornadoes and some very large hail possible as the
atmosphere becomes even more unstable this afternoon. An outflow
boundary is currently emanating from the convection north of I-44
and is propagating southward toward the I-44 corridor. Where this
boundary sets up later this afternoon will serve as a focus for an
enhanced tornado risk somewhere over northeastern Oklahoma.
Current low level wind fields aren't too supportive of a big
tornado threat, but some localized areas near the boundary will
become more supportive as low level winds back some toward this
evening. One of the driving factors will be storm mode by the
time, as the storms transition to a southeastward advancing MCS
this evening and into the overnight hours. If storms can remain
discrete enough later this afternoon, a localized tornado risk
will exist along and south of the outflow boundary through the
evening hours. Tornadoes will remain possible along the leading
edge of the line as it moves into western Arkansas and far
southeast Oklahoma later this evening and tonight. The flooding
risk will be of concern this afternoon and evening as well as
storms train over the same areas and more storms develop and move
through with the cold front currently moving into northwest
Oklahoma. Anomalously high PWAT values will favor very high
rainfall rates and locally 5-6 inches of rain will be possible
through this evening in some locations.

Past tonight, the front will largely push south of the forecast
area by Friday morning ushering in some cooler and drier
conditions for the holiday weekend. A few showers and storms will
remain possible across far southern Oklahoma throughout the day
Friday, but any severe risk looks like it will stay south of the
Red River Friday afternoon. Surface high pressure will settle into
the area Friday night and Saturday morning. That along with some
clearing skies will allow temperatures to drop into the 40s for
some locations in northeast Oklahoma and northwest Arkansas, with
possibly some mid to even lower 40s possible for some of the
normally cooler sites of northwest Arkansas. The unseasonably cool
airmass will remain in place through the weekend with highs
largely in the lower to mid 70s and dry weather through at least
Sunday across the region. Rain chances return by Monday as another
slow moving trough digs into the Desert Southwest. Most of the
rain should remain to our west on Monday, but better chances
arrive Monday night into Tuesday. Severe potential appears to be
pretty marginal for now for the first part of the week. Shower and
storm chances will continue through the rest of the week, with
some better severe potential returning by next Thursday or so as
better instability returns by then.

Bowlan

&&

.PRELIMINARY POINT TEMPS/POPS...
TUL   82  59  73  52 /  90  90  10  10
FSM   87  66  79  55 /  50 100  10  10
MLC   84  63  76  55 /  30 100  20  20
BVO   81  54  71  46 /  90  60   0   0
FYV   81  57  72  45 /  80 100  10   0
BYV   81  58  70  46 /  80 100  10   0
MKO   83  60  73  52 /  70 100  10  10
MIO   80  55  70  47 /  90  90   0   0
F10   82  60  73  52 /  70 100  10  10
HHW   84  67  80  59 /  10  90  30  20

&&

.TSA WATCHES/WARNINGS/ADVISORIES...
OK...Flash Flood Watch until 1 AM CDT Friday for OKZ054>072.

AR...Flash Flood Watch until 1 AM CDT Friday for ARZ001-002-010-011-
     019-020.

&&

LONG TERM....99

Hazardous weather outlook, May 27, 1:05 PM CDT, 1 hour 49 minutes before

Hazardous Weather Outlook
National Weather Service Tulsa OK
105 PM CDT Thu May 27 2021

ARZ001-002-010-011-019-020-029-OKZ049-053>076-281045-
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-
105 PM CDT Thu May 27 2021

...SEVERE STORMS LIKELY THRU TONIGHT...

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

.DAY ONE...This Afternoon and Tonight.
TORNADO.
	RISK...Elevated.
	AREA...East Central, Northeast Oklahoma.
	ONSET...After 2 PM.

SEVERE THUNDERSTORM.
	RISK...Significant.
	AREA...Eastern Oklahoma; Northwest Arkansas.
	ONSET...Ongoing.

 AREA AT GREATEST RISK...Areas along and west of highway 69 and
north of I-40.

FLASH FLOOD.
	RISK...Limited to Elevated.
 	AREA...Areas along north of I-40.
	ONSET...Ongoing.

HEAVY RAIN.
	RISK...Significant.
	AREA...Eastern Oklahoma; Western Arkansas.
	ONSET...Ongoing.

	AREA AT GREATEST RISK...Areas along and north of I-40.

DISCUSSION...

A significant risk of severe weather exists this afternoon into
the early evening across northeast and east central Oklahoma, with
an elevated threat across northwest Arkansas and southeast
Oklahoma tonight. Discrete storms this afternoon into the early
evening will be capable of producing tornadoes, very large hail to
2 inches or greater in diameter, and damaging winds. Any storm
that can interact with any lingering boundaries could potentially
produce a strong tornado. Storms will eventually congeal into a
line or complex and move into western Arkansas and southeast
Oklahoma tonight, with the threat transitioning to damaging winds
to around 70 mph over wider swaths. A low tornado threat would
exist on the leading edge of any bows that can surge east to
northeast. Storms should exit the region around or shortly after
midnight tonight.

Multiple rounds of heavy rain producing thunderstorms are possible
mainly along and north of I-40 thru early evening, and could lead
to some flash flooding. Locally heavy rainfall is also possible
with the storm complex south of I-40 tonight, but the system will
be more progressive by then, limiting the heavy rain potential.
Some main-stem rivers may experience flooding as well as runoff
from this event occurs.

SPOTTER AND EMERGENCY MANAGEMENT ACTION STATEMENT...
Activation of the Regional Spotter Network Expected.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.
FRIDAY...Thunderstorm Potential.
SATURDAY...No Hazards.
SUNDAY thru TUESDAY...Thunderstorm Potential.
WEDNESDAY...Thunderstorm Potential...Heavy Rain Potential.

EXTENDED DISCUSSION...

Limited thunderstorm potential will exist down near the Red River
on Friday, but the best severe weather potential will be south of
the river in Texas.

Storm chances will return next week, but the potential for
widespread organized severe weather appears low at this point. A
weak storm system could bring some locally heavy rain potential by
midweek next week.

weather.gov/tulsa contains additional information.

Lacy

In the hours before

Special weather statement, May 27, 12:30 PM CDT, 2 hours 24 minutes before

Special Weather Statement
National Weather Service Tulsa OK
1230 PM CDT Thu May 27 2021

OKZ054>056-271815-
Osage OK-Nowata OK-Washington OK-
1230 PM CDT Thu May 27 2021

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN OSAGE...NORTHERN
WASHINGTON AND NORTHWESTERN NOWATA COUNTIES UNTIL 115 PM CDT...

At 1229 PM CDT, a strong thunderstorm was located 4 miles southeast
of Chautauqua, moving east at 40 mph.

Penny size hail and wind gusts up to 50 mph will be possible with
this storm.

Locations in or near the path include...
Copan...                          Wann...
Hulah...                          Wah Sha She State Park...

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

A Tornado Watch remains in effect until 700 PM CDT for northeastern
Oklahoma.

LAT...LON 3700 9564 3682 9566 3689 9622 3700 9621
TIME...MOT...LOC 1729Z 273DEG 34KT 3698 9611

69

Special weather statement, May 27, 12:41 PM CDT, 2 hours 13 minutes before

Special Weather Statement
National Weather Service Tulsa OK
1241 PM CDT Thu May 27 2021

OKZ057-058-063-271815-
Craig OK-Delaware OK-Ottawa OK-
1241 PM CDT Thu May 27 2021

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN CRAIG...NORTHWESTERN
DELAWARE AND SOUTHWESTERN OTTAWA COUNTIES UNTIL 115 PM CDT...

At 1241 PM CDT, a strong thunderstorm was located over Vinita, moving
northeast at 30 mph.

Penny size hail and wind gusts up to 50 mph will be possible with
this storm.

Locations in or near the path include...
Miami...                          Vinita...
Grove...                          Fairland...
Afton...                          Bernice...
Narcissa...                       Bernice State Park...
Ottawa...                         Twin Bridges State Park...

This includes Interstate 44 between mile markers 278 and 307.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

A Tornado Watch remains in effect until 700 PM CDT for northeastern
Oklahoma.

LAT...LON 3688 9479 3664 9466 3658 9500 3658 9501
      3657 9501 3654 9519 3667 9528
TIME...MOT...LOC 1741Z 247DEG 25KT 3662 9515

69

Special weather statement, May 27, 1:12 PM CDT, 1 hour 42 minutes before

Special Weather Statement
National Weather Service Tulsa OK
112 PM CDT Thu May 27 2021

OKZ055>057-271915-
Craig OK-Nowata OK-Washington OK-
112 PM CDT Thu May 27 2021

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN CRAIG...NORTHEASTERN
WASHINGTON AND NOWATA COUNTIES UNTIL 215 PM CDT...

At 111 PM CDT, a strong thunderstorm was located 6 miles east of
Dewey, moving east at 30 mph.

Penny size hail and wind gusts up to 50 mph will be possible with
this storm.

Locations in or near the path include...
Bartlesville...                   Nowata...
South Coffeyville...              Delaware...
Lenapah...                        Wann...
Hollow...                         Centralia...
Centrailia...

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

A Tornado Watch remains in effect until 700 PM CDT for northeastern
Oklahoma.

LAT...LON 3665 9591 3700 9591 3700 9524 3665 9524
TIME...MOT...LOC 1811Z 264DEG 28KT 3676 9583

69

Special weather statement, May 27, 1:26 PM CDT, 1 hour 28 minutes before

Special Weather Statement
National Weather Service Tulsa OK
126 PM CDT Thu May 27 2021

OKZ054-059-271900-
Osage OK-Pawnee OK-
126 PM CDT Thu May 27 2021

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL OSAGE AND NORTH CENTRAL
PAWNEE COUNTIES UNTIL 200 PM CDT...

At 126 PM CDT, a strong thunderstorm was located over Fairfax, moving
east at 35 mph.

Wind gusts up to 50 mph will be possible with this storm.

Locations in or near the path include...
Pawhuska...                       Fairfax...
Shidler...                        Wynona...
Ralston...                        Burbank...
Pearsonia...                      Eastern Kaw Lake...
Webb City...                      Pershing...
Nelagoney...                      Apperson...

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

A Tornado Watch remains in effect until 700 PM CDT for northeastern
Oklahoma.

LAT...LON 3691 9626 3644 9620 3640 9685 3675 9688
      3674 9683 3676 9682 3677 9682 3677 9679
      3678 9679 3678 9675 3682 9675
TIME...MOT...LOC 1826Z 256DEG 30KT 3659 9670

69

Special weather statement, May 27, 1:29 PM CDT, 1 hour 25 minutes before

Special Weather Statement
National Weather Service Tulsa OK
129 PM CDT Thu May 27 2021

OKZ057-058-063-271915-
Craig OK-Delaware OK-Ottawa OK-
129 PM CDT Thu May 27 2021

...SIGNIFICANT WEATHER ADVISORY FOR EAST CENTRAL CRAIG...NORTHWESTERN
DELAWARE AND OTTAWA COUNTIES UNTIL 215 PM CDT...

At 129 PM CDT, a strong thunderstorm was located 4 miles north of
Bernice State Park, moving northeast at 30 mph.

Wind gusts up to 50 mph will be possible with this storm.

Locations in or near the path include...
Miami...                          Grove...
Fairland...                       Afton...
Bernice...                        Wyandotte...
Narcissa...                       Bernice State Park...
Ottawa...                         Cayuga...
Peoria...                         Twin Bridges State Park...

This includes Interstate 44 between mile markers 291 and 321.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

A Tornado Watch remains in effect until 700 PM CDT for northeastern
Oklahoma.

LAT...LON 3662 9462 3661 9505 3682 9504 3698 9462
TIME...MOT...LOC 1829Z 236DEG 25KT 3669 9489

69

Special weather statement, May 27, 1:55 PM CDT, 59 minutes before

Special Weather Statement
National Weather Service Tulsa OK
155 PM CDT Thu May 27 2021

OKZ054-059-272000-
Osage OK-Pawnee OK-
155 PM CDT Thu May 27 2021

...SIGNIFICANT WEATHER ADVISORY FOR OSAGE AND NORTHWESTERN PAWNEE
COUNTIES UNTIL 300 PM CDT...

At 154 PM CDT, a strong thunderstorm was located 4 miles west of
Pawhuska, moving east at 25 mph.

Penny size hail and wind gusts up to 50 mph will be possible with
this storm.

Locations in or near the path include...
Bartlesville...                   Pawhuska...
Fairfax...                        Barnsdall...
Shidler...                        Wynona...
Ralston...                        Avant...
Burbank...                        Foraker...
Bigheart...                       Bartlesville Municipal Airport...
Osage Hills State Park...         Pearsonia...
Hulah...                          Sunset Lake...
Okesa...                          Sooner Lake...
Southern Kaw Lake...              Webb City...

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

A Tornado Watch remains in effect until 700 PM CDT for northeastern
Oklahoma.

LAT...LON 3670 9703 3668 9694 3675 9689 3674 9683
      3677 9682 3678 9675 3687 9675 3697 9600
      3650 9600 3634 9703 3651 9703 3651 9701
      3653 9698 3655 9690 3658 9689 3660 9692
      3658 9698 3659 9705 3660 9704 3669 9707
TIME...MOT...LOC 1854Z 250DEG 22KT 3666 9642

69

The office that day

Everything else NWS Tulsa, OK issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 27, 9:08 AM CDT	River Flood Warning	TSA	Ottawa	29 hr
May 27, 9:58 AM CDT	River Flood Advisory	TSA	Cherokee	4 days
May 27, 10:46 AM CDT	Flash Flood Watch	TSA	Adair, Cherokee, Craig, Creek, Delaware, McIntosh and 11 more	11 hr
May 27, 11:31 AM CDT	Areal Flood Advisory	TSA	Ottawa	3 hr
May 27, 12:30 PM CDT	Special Weather Statement	TSA	Washington	45 min
May 27, 12:41 PM CDT	Special Weather Statement	TSA	Ottawa	34 min
May 27, 12:46 PM CDT	Severe Thunderstorm Warning	TSA	Craig, Delaware, Ottawa	44 min
May 27, 12:57 PM CDT	Severe Thunderstorm Warning	TSA	Osage	27 min
May 27, 1:12 PM CDT	Special Weather Statement	TSA	Nowata, Washington	63 min
May 27, 1:26 PM CDT	Special Weather Statement	TSA	Osage	34 min
May 27, 1:29 PM CDT	Special Weather Statement	TSA	Ottawa	46 min
May 27, 1:30 PM CDT	Flash Flood Warning	TSA	Ottawa	6 hr
May 27, 1:35 PM CDT	Areal Flood Advisory	TSA	Craig, Nowata	2 hr
May 27, 1:40 PM CDT	Areal Flood Advisory	TSA	Osage, Pawnee	3 hr
May 27, 1:55 PM CDT	Special Weather Statement	TSA	Osage	65 min
May 27, 2:36 PM CDT	Areal Flood Advisory	TSA	Osage, Washington	92 min
May 27, 2:37 PM CDT	Severe Thunderstorm Warning	TSA	Nowata, Osage, Rogers, Washington	53 min
May 27, 2:54 PM CDT	River Flood Warning	TSA	Cherokee	5 hr
May 27, 2:54 PM CDT	River Flood Advisory	TSA	Cherokee, Delaware	22 hr
May 27, 3:08 PM CDT	Severe Thunderstorm Warning	TSA	Rogers, Tulsa, Washington	52 min
May 27, 3:15 PM CDT	Special Weather Statement	TSA	Osage	45 min
May 27, 3:18 PM CDT	Severe Thunderstorm Warning	TSA	Creek	57 min
May 27, 3:23 PM CDT	Severe Thunderstorm Warning	TSA	Osage	37 min
May 27, 3:27 PM CDT	Severe Thunderstorm Warning	TSA	Craig, Mayes, Nowata, Rogers	63 min
May 27, 3:42 PM CDT	Severe Thunderstorm Warning	TSA	Creek, Okfuskee	48 min
May 27, 3:49 PM CDT	Severe Thunderstorm Warning	TSA	Craig, Mayes, Nowata, Osage, Pawnee, Rogers and 2 more	56 min
May 27, 3:51 PM CDT	Flash Flood Warning	TSA	Craig, Nowata	3 hr
May 27, 4:08 PM CDT	Flash Flood Warning	TSA	Osage, Washington	3 hr
May 27, 4:15 PM CDT	Special Weather Statement	TSA	Okmulgee	30 min
May 27, 4:18 PM CDT	Flash Flood Warning	TSA	Osage, Pawnee, Rogers, Tulsa, Washington	3 hr
May 27, 4:26 PM CDT	Special Weather Statement	TSA	Tulsa, Wagoner	34 min
May 27, 4:34 PM CDT	Severe Thunderstorm Warning	TSA	Craig, Delaware, Mayes, Ottawa	56 min
May 27, 4:42 PM CDT	Areal Flood Advisory	TSA	Creek, Okmulgee, Rogers, Tulsa, Wagoner	3 hr
May 27, 4:46 PM CDT	Special Weather Statement	TSA	Delaware, Mayes	59 min
May 27, 4:51 PM CDT	Severe Thunderstorm Warning	TSA	Creek, Okfuskee	39 min
May 27, 4:59 PM CDT	Flash Flood Warning	TSA	Craig, Delaware, Mayes, Rogers	3 hr
May 27, 5:07 PM CDT	Special Weather Statement	TSA	Wagoner	38 min
May 27, 5:26 PM CDT	Special Weather Statement	TSA	Delaware	34 min
May 27, 5:26 PM CDT	Severe Thunderstorm Warning	TSA	Creek, Okfuskee	64 min
May 27, 5:39 PM CDT	Severe Thunderstorm Warning	TSA	Cherokee, Muskogee, Wagoner	51 min
May 27, 5:47 PM CDT	Special Weather Statement	TSA	Okmulgee	43 min
May 27, 6:06 PM CDT	Severe Thunderstorm Warning	TSA	Okfuskee	39 min
May 27, 6:07 PM CDT	Flash Flood Warning	TSA	Creek, Okfuskee, Okmulgee	3 hr
May 27, 6:10 PM CDT	Severe Thunderstorm Warning	TSA	Okfuskee, Okmulgee	50 min
May 27, 6:26 PM CDT	Flash Flood Warning	TSA	Adair, Cherokee, Muskogee, Okmulgee, Wagoner	2 hr
May 27, 6:34 PM CDT	Special Weather Statement	TSA	Cherokee	41 min
May 27, 6:35 PM CDT	Areal Flood Warning	TSA	Craig, Nowata	12 hr
May 27, 6:35 PM CDT	Severe Thunderstorm Warning	TSA	Okfuskee, Okmulgee	40 min
May 27, 6:51 PM CDT	Areal Flood Warning	TSA	Osage, Washington	12 hr
May 27, 6:51 PM CDT	Severe Thunderstorm Warning	TSA	McIntosh, Muskogee, Okmulgee	39 min
May 27, 6:59 PM CDT	Severe Thunderstorm Warning	TSA	McIntosh, Okfuskee, Okmulgee, Pittsburg	46 min

Nearby

River Flood Advisories in Oklahoma, 2021 Every river flood advisory in 2021

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive; the gauge from the NWS water service and the USGS.