Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 70, NWS Tulsa, OK

May 3, 2021Haskell County, LeFlore County, Sequoyah County, Oklahoma; Crawford County, Sebastian County, Arkansas

NWS Tulsa, OK issued this severe thunderstorm warning at May 3, 2021, 9:18 PM CDT for Haskell County, LeFlore County, Sequoyah County, Oklahoma; Crawford County, Sebastian County, Arkansas. It was in force for 57 min. 17 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 3, 2021, 9:18 PM CDT (02:18 UTC)
Expired: May 3, 2021, 10:15 PM CDT
In force: 57 min
Issued by: NWS Tulsa, OK
Area: Storm-based polygon
Hail: 1.0 in
Wind: 70.0 mph

Counties Crawford County, AR, Sebastian County, AR, Haskell County, OK, LeFlore County, OK, Sequoyah County, OK

The radar

The Western Arkansas radar (KSRX), 15 km from the middle of the area, began a volume at 02:21 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 3, 9:21 PM CDT	TSTM WND DMG	Bokoshe, OK	REPORT OF TREE DOWN AND POWER LINES DOWN ON TWILIGHT ROAD NEAR BOKOSHE.
May 3, 9:24 PM CDT	HAIL 0.75	Poteau, OK
May 3, 9:33 PM CDT	TORNADO 1	Van Buren, AR	NWS STORM SURVEY CONFIRMS AN EF1 TORNADO WITH WINDS OF 100 TO 110MPH THAT TOUCHED DOWN 4 MILES SE OF MULDROW. THIS TORNADO MOVED NE INTO PARTS OF FT. SMITH AND VAN BUREN. THE TORNADO CONTINUED EAST OF VAN BUREN. THE ENDING POINT OF THE TORNADO HAS YET TO BE DE
May 3, 9:36 PM CDT	TORNADO 1	Roland, OK	NWS STORM SURVEY FINDS EF1 TORNADO DAMAGE FROM 1 E OF MULDROW, OK TO 3.5 W OF RENA, AR. THE TORNADO TOUCHED DOWN AT 9:36PM AND LIFTED AT 9:47PM. THE TORNADO UPROOTED TREES, SNAPPED LARGE TREE LIMBS, SNAPPED POWER POLES, DESTROYED OUTBUILDINGS, AND SEVERAL HOME
May 3, 9:39 PM CDT	TSTM WND DMG	Roland, OK	DAMAGE IN THE ROLAND AND MULDROW AREA CONSISTED OF MULTIPLE TREES DOWN. ONE TREE FELL ONTO A HOME, TRAPPING ONE PERSON INSIDE.
May 3, 9:39 PM CDT	NON-TSTM WND DMG	Roland, OK	DAMAGE IN THE ROLAND AND MULDROW AREA CONSISTED OF MULTIPLE TREES DOWN. ONE TREE FELL ONTO A HOME, TRAPPING ONE PERSON INSIDE.
May 3, 9:41 PM CDT	TSTM WND DMG	2 Wsw Van Buren, AR	EM REPORTS SEVERAL HOMES RECEIVING DAMAGE WITH MULTIPLE HOMES SUSTAINING MAJOR DAMAGE. A SCHOOL AND A CHURCH ALSO RECEIVED DAMAGE. POSSIBLE TORNADO. SURVEY TEAM WILL BE SURVEYING THE AREA. TIME IS ESTIMATED FROM RADAR.
May 3, 9:42 PM CDT	TSTM WND GST 62	Fort Smith Regional Air, AR	THUNDERSTORM WINDS OF 62 MPH MEASURED BY ASOS EQUIPMENT AS THE FORT SMITH REGIONAL AIRPORT.
May 3, 9:47 PM CDT	TSTM WND DMG	Van Buren, AR	MULTIPLE REPORTS OF TREES DAMAGED OR DOWNED BY THUNDERSTORM WINDS.
May 3, 9:47 PM CDT	TSTM WND GST 60	Van Buren, AR	THUNDERSTORM WIND GUST ESTIMATED TO 60 MPH.
May 3, 9:51 PM CDT	TSTM WND DMG	Arkoma, OK	REPORT OF MAJOR POWER OUTAGES IN THE AREA.
May 3, 9:52 PM CDT	TSTM WND DMG	Alma, AR	SEVERAL REPORTS OF TREES SNAPPED OR UPROOTED IN ALMA. PHOTOS POSTED ON SOCIAL MEDIA SHOW A LARGE TREE FALLEN ONTO A HOME. TIME ESTIMATED FROM RADAR.
May 3, 9:53 PM CDT	TSTM WND GST 74	Fort Smith Regional Air, AR	THUNDERSTORM WIND GUST OF 74 MPH MEASURED BY ASOS EQUIPMENT AS THE FORT SMITH REGIONAL AIRPORT.
May 3, 9:54 PM CDT	TSTM WND DMG	3 N Alma, AR	NUMEROUS TREES DOWN. TIME ESTIMATED FROM RADAR.
May 3, 9:55 PM CDT	TSTM WND DMG	Van Buren, AR	REPORT OF A TREE DOWNED ONTO A HOME.
May 3, 9:55 PM CDT	NON-TSTM WND DMG	Van Buren, AR	ROOF BLOWN OFF CRAWFORD COUNTY COURT HOUSE.
May 3, 10:00 PM CDT	TSTM WND DMG	Rudy, AR	POWER LINES DOWN.

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 3, 3:48 PM CDT	Tornado Watch	SPC	7 hr
May 3, 9:10 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 2.3 hours before the alert went out and 177 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: 1558 J/kg
Mixed-layer CIN: -63 J/kg
Mixed-layer LCL: 972 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 57 m²/s²
0-3 km storm-relative helicity: 150 m²/s²
Significant tornado parameter: 0.6
Supercell composite: 4.1

Open this sounding in Storm Lab

The text

As transmitted.

909 
WUUS54 KTSA 040218
SVRTSA
ARC033-131-OKC061-079-135-040315-
/O.NEW.KTSA.SV.W.0070.210504T0218Z-210504T0315Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Tulsa OK
918 PM CDT Mon May 3 2021

The National Weather Service in Tulsa has issued a

* Severe Thunderstorm Warning for...
  Western Crawford County in northwestern Arkansas...
  Sebastian County in west central Arkansas...
  Northeastern Haskell County in southeastern Oklahoma...
  Eastern Sequoyah County in east central Oklahoma...
  Northeastern Le Flore County in southeastern Oklahoma...

* Until 1015 PM CDT.

* At 917 PM CDT, severe thunderstorms were located along a line
  extending from 6 miles south of Sallisaw to 6 miles south of Gans
  to 3 miles southwest of Panama to 6 miles northwest of Wister,
  moving northeast at 45 mph.

  HAZARD...70 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect considerable 
           tree damage. Wind damage is also likely to mobile homes, 
           roofs, and outbuildings.

* Locations in or near the path include...
  Fort Smith...                     Van Buren...
  Sallisaw...                       Poteau...
  Cedarville...                     Natural Dam...
  Greenwood...                      Alma...
  Barling...                        Pocola...
  Muldrow...                        Roland...
  Lavaca...                         Spiro...
  Arkoma...                         Mulberry...
  Panama...                         Dyer...
  Hackett...                        Huntington...

This includes the following highways,
 Interstate 40 in Arkansas between mile markers 0 and 18.
 Interstate 40 in Oklahoma between mile markers 305 and 328.
 Interstate 540 between mile markers 1 and 14.
 Interstate 49 between mile markers 22 and 29.

A Tornado Watch remains in effect until 1100 PM CDT for southeastern,
northeastern and east central Oklahoma.

LAT...LON 3510 9418 3494 9492 3524 9482 3538 9497
      3564 9449 3564 9448 3565 9447 3573 9433
      3557 9413 3538 9409
TIME...MOT...LOC 0217Z 237DEG 39KT 3538 9482 3530 9470 3513 9473 3504
9480

HAIL...1.00IN
WIND...70MPH
 
$$

Lacy

1 follow-up statement

604 
WWUS54 KTSA 040236
SVSTSA

Severe Weather Statement
National Weather Service Tulsa OK
936 PM CDT Mon May 3 2021

OKC061-040246-
/O.CAN.KTSA.SV.W.0070.000000T0000Z-210504T0315Z/
Haskell OK-
936 PM CDT Mon May 3 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN HASKELL COUNTY IS
CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore the warning has been cancelled.

A Tornado Watch remains in effect until 1100 PM CDT for southeastern,
northeastern and east central Oklahoma.

A Severe Thunderstorm Watch remains in effect until 400 AM CDT for
northwestern and west central Arkansas.

LAT...LON 3510 9418 3500 9465 3525 9481 3543 9481
      3564 9449 3564 9448 3565 9447 3573 9433
      3557 9413 3538 9409
TIME...MOT...LOC 0236Z 242DEG 41KT 3545 9465 3537 9449 3523 9445 3516
9446

$$

ARC033-131-OKC079-135-040315-
/O.CON.KTSA.SV.W.0070.000000T0000Z-210504T0315Z/
Crawford AR-Sebastian AR-Sequoyah OK-Le Flore OK-
936 PM CDT Mon May 3 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1015 PM CDT
FOR WESTERN CRAWFORD...SEBASTIAN...EASTERN SEQUOYAH AND NORTHEASTERN
LE FLORE COUNTIES...

At 936 PM CDT, severe thunderstorms were located along a line
extending from 3 miles northwest of Muldrow to 2 miles southwest of
Moffett to near Bonanza to 3 miles southwest of Hackett, moving
northeast at 45 mph.

HAZARD...70 mph wind gusts and penny size hail.

SOURCE...Radar indicated.

IMPACT...Expect considerable tree damage. Damage is likely to mobile 
         homes, roofs, and outbuildings.

Locations in or near the path include...
Fort Smith...                     Van Buren...
Sallisaw...                       Poteau...
Cedarville...                     Natural Dam...
Greenwood...                      Alma...
Barling...                        Pocola...
Muldrow...                        Roland...
Lavaca...                         Spiro...
Arkoma...                         Mulberry...
Panama...                         Dyer...
Hackett...                        Huntington...

This includes the following highways,
 Interstate 40 in Arkansas between mile markers 0 and 18.
 Interstate 40 in Oklahoma between mile markers 308 and 328.
 Interstate 540 between mile markers 1 and 14.
 Interstate 49 between mile markers 22 and 29.

A Tornado Watch remains in effect until 1100 PM CDT for southeastern,
northeastern and east central Oklahoma.

LAT...LON 3510 9418 3500 9465 3525 9481 3543 9481
      3564 9449 3564 9448 3565 9447 3573 9433
      3557 9413 3538 9409
TIME...MOT...LOC 0236Z 242DEG 41KT 3545 9465 3537 9449 3523 9445 3516
9446

HAIL...0.75IN
WIND...70MPH
 
$$

Lacy

The office that day

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

Issued	Product	Office	Counties	Lasted
May 3, 7:04 PM CDT	Severe Thunderstorm Warning	TSA	Pittsburg	41 min
May 3, 7:15 PM CDT	Severe Thunderstorm Warning	TSA	Pittsburg	45 min
May 3, 7:19 PM CDT	Special Weather Statement	TSA	McIntosh	26 min
May 3, 7:27 PM CDT	Tornado Warning	TSA	Pittsburg	33 min
May 3, 7:37 PM CDT	Special Weather Statement	TSA	Muskogee	23 min
May 3, 7:39 PM CDT	Flash Flood Warning	TSA	Pittsburg	3 hr
May 3, 7:42 PM CDT	Severe Thunderstorm Warning	TSA	Latimer, Pittsburg	48 min
May 3, 7:45 PM CDT	Tornado Warning	TSA	Pittsburg	27 min
May 3, 7:49 PM CDT	River Flood Advisory	TSA	Cherokee	12 hr
May 3, 8:01 PM CDT	Special Weather Statement	TSA	Muskogee	29 min
May 3, 8:05 PM CDT	Tornado Warning	TSA	Latimer	25 min
May 3, 8:07 PM CDT	Severe Thunderstorm Warning	TSA	Pittsburg	34 min
May 3, 8:12 PM CDT	Severe Thunderstorm Warning	TSA	Creek, Okfuskee	36 min
May 3, 8:18 PM CDT	Severe Thunderstorm Warning	TSA	Haskell, Latimer, Pittsburg	42 min
May 3, 8:28 PM CDT	Special Weather Statement	TSA	Sequoyah	32 min
May 3, 8:44 PM CDT	Special Weather Statement	TSA	Okfuskee	31 min
May 3, 8:47 PM CDT	Special Weather Statement	TSA	Pushmataha	28 min
May 3, 8:52 PM CDT	Severe Thunderstorm Warning	TSA	Haskell, Latimer, LeFlore, Sequoyah	53 min
May 3, 8:53 PM CDT	Special Weather Statement	TSA	Adair, Cherokee	37 min
May 3, 8:55 PM CDT	Severe Thunderstorm Warning	TSA	Latimer, Pittsburg, Pushmataha	32 min
May 3, 9:02 PM CDT	Special Weather Statement	TSA	Creek	28 min
May 3, 9:02 PM CDT	Tornado Warning	TSA	Pushmataha	28 min
May 3, 9:04 PM CDT	Special Weather Statement	TSA	Choctaw	26 min
May 3, 9:33 PM CDT	Flash Flood Warning	TSA	Haskell, Latimer, LeFlore, Pittsburg	3 hr
May 3, 9:38 PM CDT	Tornado Warning	TSA	Sequoyah	37 min
May 3, 9:42 PM CDT	Areal Flood Advisory	TSA	Creek, Tulsa	3 hr
May 3, 9:57 PM CDT	Special Weather Statement	TSA	LeFlore	33 min
May 3, 9:59 PM CDT	Special Weather Statement	TSA	LeFlore	31 min
May 3, 10:12 PM CDT	Flash Flood Warning	TSA	LeFlore, Sequoyah	3 hr
May 3, 10:15 PM CDT	Severe Thunderstorm Warning	TSA	LeFlore	45 min
May 3, 10:19 PM CDT	Flash Flood Warning	TSA	Adair	3 hr
May 3, 10:21 PM CDT	Severe Thunderstorm Warning	TSA	LeFlore	39 min
May 3, 11:26 PM CDT	Severe Thunderstorm Warning	TSA	Pawnee	49 min
May 4, 1:41 AM CDT	Special Weather Statement	TSA	Okmulgee	34 min
May 4, 2:27 AM CDT	Special Weather Statement	TSA	Pittsburg	33 min
May 4, 2:28 AM CDT	Special Weather Statement	TSA	McIntosh	32 min
May 4, 2:50 AM CDT	Special Weather Statement	TSA	McIntosh, Pittsburg	25 min
May 4, 8:08 AM CDT	River Flood Warning	TSA	Cherokee	29 hr
May 4, 8:15 AM CDT	River Flood Warning	TSA	Adair, Delaware	13 hr
May 4, 8:15 AM CDT	River Flood Advisory	TSA	Adair, Cherokee, Delaware	24 hr
May 3, 9:51 PM CDT	Severe Thunderstorm Warning	TSA	Crawford, Franklin, Madison, Sebastian, Washington	39 min
May 3, 10:02 PM CDT	Tornado Warning	TSA	Crawford, Franklin	15 min
May 3, 10:12 PM CDT	Special Weather Statement	TSA	Carroll	33 min
May 3, 10:12 PM CDT	Severe Thunderstorm Warning	TSA	Franklin, Madison	48 min
May 3, 10:21 PM CDT	Severe Thunderstorm Warning	TSA	Madison, Washington	39 min
May 3, 10:31 PM CDT	Severe Thunderstorm Warning	TSA	Carroll, Madison, Washington	44 min
May 3, 10:52 PM CDT	Special Weather Statement	TSA	Sebastian	23 min
May 3, 11:08 PM CDT	Severe Thunderstorm Warning	TSA	Carroll	52 min
May 3, 11:14 PM CDT	Severe Thunderstorm Warning	TSA	Madison	13 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2021 Severe Thunderstorm Warnings in Arkansas, 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.