Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 104, NWS Tulsa, OK

May 27, 2021Okfuskee County, Okmulgee County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at May 27, 2021, 6:35 PM CDT for Okfuskee County, Okmulgee County, Oklahoma. It was in force for 40 min. 5 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: May 27, 2021, 6:35 PM CDT (23:35 UTC)
Expired: May 27, 2021, 7:15 PM CDT
In force: 40 min
Issued by: NWS Tulsa, OK
Area: Storm-based polygon
Hail: 1.5 in
Wind: 70.0 mph

Counties Okfuskee County, OK, Okmulgee County, OK

The radar

The Norman radar (KTLX), 91 km from the middle of the area, began a volume at 23:35 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.

What was reported inside it

Time	Report	Where	Remark
May 27, 6:37 PM CDT	TSTM WND DMG	1 E Bearden, OK	STRONG THUNDERSTORM WIND BLEW DOWN TREES AND POWER POLES IN AND AROUND TOWN.
May 27, 6:45 PM CDT	TSTM WND DMG	7 Ese Bearden, OK	STRONG THUNDERSTORM WIND BLEW DOWN A TREE AND POWER POLES.
May 27, 6:46 PM CDT	HAIL 0.75	3 N Schulter, OK	REPORT FROM MPING: DIME (0.75 IN.).
May 27, 6:55 PM CDT	HAIL 1	Clearview, OK
May 27, 7:11 PM CDT	HAIL 0.75	Dewar, OK	REPORT FROM MPING: DIME (0.75 IN.).

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
May 27, 11:58 AM CDT	Tornado Watch	SPC	9 hr

The nearest sounding before it

Norman, OK (KOUN), launched 12:00Z, 11.6 hours before the alert went out and 105 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 2431 J/kg
Mixed-layer CIN: -121 J/kg
Mixed-layer LCL: 765 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 264 m²/s²
0-3 km storm-relative helicity: 360 m²/s²
Significant tornado parameter: 1.5
Supercell composite: 7.5

Open this sounding in Storm Lab

The text

As transmitted.

066 
WUUS54 KTSA 272335
SVRTSA
OKC107-111-280015-
/O.NEW.KTSA.SV.W.0104.210527T2335Z-210528T0015Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Tulsa OK
635 PM CDT Thu May 27 2021

The National Weather Service in Tulsa has issued a

* Severe Thunderstorm Warning for...
  Southern Okmulgee County in northeastern Oklahoma...
  Okfuskee County in east central Oklahoma...

* Until 715 PM CDT.

* At 635 PM CDT, severe thunderstorms were located along a line
  extending from 3 miles southeast of Welty to Castle to 3 miles
  north of Cromwell, moving east at 45 mph.

  HAZARD...70 mph wind gusts and ping pong ball size hail.

  SOURCE...Radar indicated.

  IMPACT...People and animals outdoors will be injured. Expect hail 
           damage to roofs, siding, windows, and vehicles. Expect 
           considerable tree damage. Wind damage is also likely to 
           mobile homes, roofs, and outbuildings.

* Locations in or near the path include...
  Okmulgee...                       Okemah...
  Okfuskee...                       Henryetta...
  Morris...                         Weleetka...
  Dewar...                          Schulter...
  Grayson...                        Bearden...
  Hoffman...                        Castle...
  Clearview...                      Okmulgee State Park...
  Welty...                          Pharoah...
  Bryant...                         Mason...

This includes Interstate 40 in Oklahoma between mile markers 212 and
243.
 
A Tornado Watch remains in effect until 900 PM CDT for southeastern,
northeastern and east central Oklahoma.

LAT...LON 3548 9646 3564 9647 3560 9581 3547 9582
      3546 9587 3538 9588 3537 9598 3529 9598
      3529 9644 3546 9644 3546 9647 3543 9649
      3543 9652 3541 9654 3539 9654 3540 9657
TIME...MOT...LOC 2335Z 280DEG 39KT 3558 9637 3547 9637 3539 9647 

HAIL...1.50IN
WIND...70MPH
 
$$

Lacy

1 follow-up statement

474 
WWUS54 KTSA 272355
SVSTSA

Severe Weather Statement
National Weather Service Tulsa OK
655 PM CDT Thu May 27 2021

OKC107-111-280015-
/O.CON.KTSA.SV.W.0104.000000T0000Z-210528T0015Z/
Okmulgee OK-Okfuskee OK-
655 PM CDT Thu May 27 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 715 PM CDT
FOR SOUTHWESTERN OKMULGEE AND SOUTHEASTERN OKFUSKEE COUNTIES...

At 655 PM CDT, severe thunderstorms were located along a line
extending from 7 miles southeast of Okfuskee to 2 miles southwest of
Pharoah to 3 miles southwest of Weleetka, moving east at 45 mph.

HAZARD...Golf ball size hail and 70 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...People and animals outdoors will be injured. Expect hail 
         damage to roofs, siding, windows, and vehicles. Expect 
         considerable tree damage. Wind damage is also likely to 
         mobile homes, roofs, and outbuildings.

Locations in or near the path include...
Henryetta...                      Weleetka...
Dewar...                          Schulter...
Grayson...                        Hoffman...
Clearview...                      Pharoah...
Bryant...                         

This includes Interstate 40 in Oklahoma between mile markers 225 and
243.
 
A Tornado Watch remains in effect until 900 PM CDT for southeastern,
northeastern and east central Oklahoma.

LAT...LON 3556 9620 3555 9581 3547 9582 3546 9587
      3538 9588 3537 9598 3529 9598 3529 9622
      3543 9621
TIME...MOT...LOC 2355Z 288DEG 39KT 3551 9614 3539 9614 3530 9618 

HAIL...1.75IN
WIND...70MPH
 
$$

Lacy

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, 2:54 PM CDT	River Flood Advisory	TSA	Adair, Cherokee, Delaware	35 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, 6:51 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

Severe Thunderstorm Warnings in Oklahoma, 2021 Every severe thunderstorm warning 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.