Alert archive / Oklahoma / Tornado Warnings in 2021

Tornado Warning 10, NWS Tulsa, OK

April 28, 2021Okfuskee County, Okmulgee County, Oklahoma

NWS Tulsa, OK issued this tornado warning at Apr 28, 2021, 2:20 AM CDT for Okfuskee County, Okmulgee County, Oklahoma. It was in force for 40 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Apr 28, 2021, 2:20 AM CDT (07:20 UTC)
Expired: Apr 28, 2021, 3:00 AM CDT
In force: 40 min
Issued by: NWS Tulsa, OK
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

Counties Okfuskee County, OK, Okmulgee County, OK

The radar

The Tulsa radar (KINX), 76 km from the middle of the area, began a volume at 07:22 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 nearest sounding before it

Norman, OK (KOUN), launched 00:00Z, 7.3 hours before the alert went out and 126 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: 661 J/kg
Mixed-layer CIN: -196 J/kg
Mixed-layer LCL: 1104 m above ground
0-6 km bulk shear: 50 kt
0-1 km storm-relative helicity: 228 m²/s²
0-3 km storm-relative helicity: 198 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.0

Open this sounding in Storm Lab

The text

As transmitted.

729 
WFUS54 KTSA 280720
TORTSA
OKC107-111-280800-
/O.NEW.KTSA.TO.W.0010.210428T0720Z-210428T0800Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Tulsa OK
220 AM CDT Wed Apr 28 2021

The National Weather Service in Tulsa has issued a

* Tornado Warning for...
  Western Okmulgee County in northeastern Oklahoma...
  Eastern Okfuskee County in east central Oklahoma...

* Until 300 AM CDT.
    
* At 219 AM CDT, a severe thunderstorm capable of producing a tornado
  was located near Clearview, moving north at 35 mph.

  HAZARD...Tornado.

  SOURCE...Radar indicated rotation.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely.

* Locations in or near the path include...
  Okmulgee...                       Okfuskee...
  Beggs...                          Weleetka...
  Clearview...                      Preston...
  Okmulgee State Park...            Pharoah...
  Liberty...                        Bryant...
  Hectorville...                    

This includes Interstate 40 in Oklahoma between mile markers 222 and
235.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!

&&

LAT...LON 3564 9622 3564 9619 3572 9619 3586 9616
      3586 9588 3584 9582 3532 9608 3537 9629
TIME...MOT...LOC 0719Z 197DEG 31KT 3542 9616 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

1 follow-up statement

460 
WWUS54 KTSA 280738
SVSTSA

Severe Weather Statement
National Weather Service Tulsa OK
238 AM CDT Wed Apr 28 2021

OKC107-280748-
/O.CAN.KTSA.TO.W.0010.000000T0000Z-210428T0800Z/
Okfuskee OK-
238 AM CDT Wed Apr 28 2021

...THE TORNADO WARNING FOR EASTERN OKFUSKEE COUNTY IS CANCELLED...
    
The tornadic thunderstorm which prompted the warning has moved out 
of the warned area. Therefore the warning has been cancelled.

LAT...LON 3585 9604 3577 9586 3547 9602 3550 9609
      3555 9609 3555 9617
TIME...MOT...LOC 0738Z 209DEG 30KT 3554 9607 

$$

OKC111-280800-
/O.CON.KTSA.TO.W.0010.000000T0000Z-210428T0800Z/
Okmulgee OK-
238 AM CDT Wed Apr 28 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 300 AM CDT FOR WESTERN
OKMULGEE COUNTY...
    
At 238 AM CDT, a severe thunderstorm capable of producing a tornado
was located 5 miles south of Okmulgee State Park, moving northeast at
35 mph.

HAZARD...Tornado.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

Locations in or near the path include...
Okmulgee...                       Beggs...
Preston...                        Okmulgee State Park...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!

&&

LAT...LON 3585 9604 3577 9586 3547 9602 3550 9609
      3555 9609 3555 9617
TIME...MOT...LOC 0738Z 209DEG 30KT 3554 9607 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 28, 1:54 AM CDT	Special Weather Statement	TSA	Craig, Osage, Rogers, Washington	21 min
Apr 28, 2:16 AM CDT	Special Weather Statement	TSA	Craig	29 min
Apr 28, 2:57 AM CDT	Tornado Warning	TSA	Muskogee, Okmulgee	15 min
Apr 28, 5:12 AM CDT	Special Weather Statement	TSA	Adair	33 min
Apr 28, 5:19 AM CDT	Special Weather Statement	TSA	Okmulgee	26 min
Apr 28, 5:22 AM CDT	Special Weather Statement	TSA	Sequoyah	23 min
Apr 28, 5:44 AM CDT	Special Weather Statement	TSA	Okmulgee	16 min
Apr 28, 5:48 AM CDT	Special Weather Statement	TSA	Adair	27 min
Apr 28, 5:52 AM CDT	Tornado Warning	TSA	Adair	38 min
Apr 28, 5:54 AM CDT	Special Weather Statement	TSA	McIntosh	36 min
Apr 28, 6:03 AM CDT	Special Weather Statement	TSA	Sequoyah	27 min
Apr 28, 6:23 AM CDT	Special Weather Statement	TSA	McIntosh	37 min
Apr 28, 6:26 AM CDT	Tornado Warning	TSA	Adair	18 min
Apr 28, 6:45 AM CDT	Areal Flood Advisory	TSA	Adair, Cherokee, Muskogee, Sequoyah	5 hr
Apr 28, 6:53 AM CDT	Special Weather Statement	TSA	Muskogee	52 min
Apr 28, 7:43 AM CDT	Special Weather Statement	TSA	Adair, Sequoyah	47 min
Apr 28, 7:52 AM CDT	Flash Flood Warning	TSA	Adair, Cherokee	5 hr
Apr 28, 8:29 AM CDT	Flash Flood Warning	TSA	Adair	4 hr
Apr 28, 9:15 AM CDT	River Flood Warning	TSA	Adair, Cherokee, Delaware	47 hr
Apr 28, 9:15 AM CDT	River Flood Warning	TSA	Cherokee	64 hr
Apr 28, 9:15 AM CDT	River Flood Warning	TSA	Cherokee	11 hr
Apr 28, 9:15 AM CDT	River Flood Warning	TSA	Adair, Delaware	41 hr
Apr 28, 9:18 AM CDT	River Flood Advisory	TSA	Cherokee, Delaware	23 hr
Apr 28, 9:22 AM CDT	River Flood Warning	TSA	Creek	7 hr
Apr 28, 9:35 AM CDT	Special Weather Statement	TSA	Pittsburg	40 min
Apr 28, 9:58 AM CDT	River Flood Warning	TSA	Sequoyah	41 hr
Apr 28, 10:01 AM CDT	River Flood Warning	TSA	Okmulgee	16 hr
Apr 28, 10:14 AM CDT	Special Weather Statement	TSA	McIntosh, Pittsburg	46 min
Apr 28, 10:38 AM CDT	Areal Flood Advisory	TSA	McIntosh, Pittsburg	3 hr
Apr 28, 10:40 AM CDT	Tornado Warning	TSA	McIntosh, Pittsburg	35 min
Apr 28, 10:49 AM CDT	Flash Flood Warning	TSA	Haskell, McIntosh, Muskogee, Pittsburg, Sequoyah	4 hr
Apr 28, 11:09 AM CDT	Tornado Warning	TSA	Haskell, McIntosh, Pittsburg	31 min
Apr 28, 11:42 AM CDT	Special Weather Statement	TSA	Haskell	33 min
Apr 28, 12:32 PM CDT	Areal Flood Warning	TSA	Adair, Cherokee, Delaware, Haskell, Latimer, McIntosh and 3 more	9 hr
Apr 28, 4:36 PM CDT	River Flood Warning	TSA	LeFlore	3 days

Nearby

Tornado Warnings in Oklahoma, 2021 Every tornado warning in 2021 Tornadoes 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.