Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 56, NWS Tulsa, OK

April 30, 2019Haskell County, LeFlore County, Sequoyah County, Oklahoma; Crawford County, Sebastian County, Arkansas

NWS Tulsa, OK issued this severe thunderstorm warning at Apr 30, 2019, 11:47 PM CDT for Haskell County, LeFlore County, Sequoyah County, Oklahoma; Crawford County, Sebastian County, Arkansas. It was in force for 43 min. 1 report 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: Apr 30, 2019, 11:47 PM CDT (04:47 UTC)
Expired: May 1, 2019, 12:30 AM CDT
In force: 43 min
Issued by: NWS Tulsa, OK
Area: Storm-based polygon
Tornado: Possible
Hail: 0.75 in
Wind: 60.0 mph

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

The radar

The Western Arkansas radar (KSRX), 14 km from the middle of the area, began a volume at 04:50 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 1, 12:35 AM CDT	TSTM WND DMG	Huntington, AR	EMERGENCY MANAGEMENT REPORTED TREE DAMAGE IN THE HUNTINGTON AREA WITH ONE TREE FALLING ON A ROOF AND CAUSING STRUCTURAL DAMAGE TO A HOUSE. NO INJURIES. CORRECTED TIME VIA RADAR ESTIMATE.

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
Apr 30, 12:02 PM CDT	Tornado Watch	SPC	13 hr
Apr 30, 10:58 PM CDT	Tornado Watch	SPC	4 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 4.8 hours before the alert went out and 200 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: 390 J/kg
Mixed-layer CIN: -76 J/kg
Mixed-layer LCL: 893 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 158 m²/s²
0-3 km storm-relative helicity: 312 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 4.0

Open this sounding in Storm Lab

The text

As transmitted.

837 
WUUS54 KTSA 010447
SVRTSA
ARC033-131-OKC061-079-135-010530-
/O.NEW.KTSA.SV.W.0056.190501T0447Z-190501T0530Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Tulsa OK
1147 PM CDT Tue Apr 30 2019

The National Weather Service in Tulsa has issued a

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

* Until 1230 AM CDT.

* At 1147 PM CDT, severe thunderstorms were located along a line
  extending from 3 miles southeast of Tamaha to 4 miles east of Keota
  to 8 miles southeast of Mc Curtain, moving east at 60 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs, siding, and trees.

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

This includes the following highways,
 Interstate 40 in Arkansas between mile markers 0 and 17.
 Interstate 40 in Oklahoma between mile markers 310 and 328.
 Interstate 540 between mile markers 1 and 14.
 Interstate 49 between mile markers 22 and 23.

A Tornado Watch remains in effect until 100 AM CDT for northwestern
and west central Arkansas...and southeastern and east central
Oklahoma. A Tornado Watch also remains in effect until 500 AM CDT for
northwestern and west central Arkansas...and southeastern and east
central Oklahoma.

LAT...LON 3514 9409 3514 9414 3510 9414 3509 9419
      3508 9420 3508 9422 3506 9425 3505 9493
      3506 9493 3506 9497 3522 9491 3540 9502
      3554 9415 3538 9408 3521 9408
TIME...MOT...LOC 0447Z 257DEG 51KT 3536 9494 3524 9484 3507 9486 

TORNADO...POSSIBLE
HAIL...<.75IN
WIND...60MPH
 
$$

Lacy

1 follow-up statement

759 
WWUS54 KTSA 010507
SVSTSA

Severe Weather Statement
National Weather Service Tulsa OK
1207 AM CDT Wed May 1 2019

OKC061-010517-
/O.CAN.KTSA.SV.W.0056.000000T0000Z-190501T0530Z/
Haskell OK-
1207 AM CDT Wed May 1 2019

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN 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 100 AM CDT for northwestern
and west central Arkansas...and southeastern and east central
Oklahoma. A Tornado Watch also remains in effect until 500 AM CDT for
northwestern and west central Arkansas...and southeastern and east
central Oklahoma.

LAT...LON 3514 9409 3514 9414 3510 9414 3509 9419
      3508 9420 3508 9422 3506 9425 3511 9474
      3515 9479 3520 9478 3531 9479 3536 9477
      3554 9415 3538 9408 3521 9408
TIME...MOT...LOC 0507Z 260DEG 45KT 3539 9462 3525 9458 3514 9466 

$$

ARC033-131-OKC079-135-010530-
/O.CON.KTSA.SV.W.0056.000000T0000Z-190501T0530Z/
Crawford AR-Sebastian AR-Sequoyah OK-Le Flore OK-
1207 AM CDT Wed May 1 2019

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1230 AM CDT
FOR SOUTHWESTERN CRAWFORD...SEBASTIAN...SOUTHEASTERN SEQUOYAH AND
NORTHEASTERN LE FLORE COUNTIES...

At 1207 AM CDT, severe thunderstorms were located along a line
extending from near Muldrow to 2 miles northeast of Spiro to near
Panama, moving east at 50 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

Locations in or near the path include...
Fort Smith...                     Van Buren...
Greenwood...                      Alma...
Barling...                        Pocola...
Muldrow...                        Roland...
Lavaca...                         Spiro...
Arkoma...                         Panama...
Mansfield...                      Dyer...
Hackett...                        Huntington...
Bonanza...                        Midland...
Cameron...                        Moffett...

This includes the following highways,
 Interstate 40 in Arkansas between mile markers 1 and 17.
 Interstate 40 in Oklahoma between mile markers 316 and 328.
 Interstate 540 between mile markers 1 and 14.
 Interstate 49 near mile marker 22.

A Tornado Watch remains in effect until 100 AM CDT for northwestern
and west central Arkansas...and southeastern and east central
Oklahoma. A Tornado Watch also remains in effect until 500 AM CDT for
northwestern and west central Arkansas...and southeastern and east
central Oklahoma.

LAT...LON 3514 9409 3514 9414 3510 9414 3509 9419
      3508 9420 3508 9422 3506 9425 3511 9474
      3515 9479 3520 9478 3531 9479 3536 9477
      3554 9415 3538 9408 3521 9408
TIME...MOT...LOC 0507Z 260DEG 45KT 3539 9462 3525 9458 3514 9466 

TORNADO...POSSIBLE
HAIL...<.75IN
WIND...60MPH
 
$$

Lacy

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 30, 7:07 PM CDT	Areal Flood Advisory	TSA	Creek, Tulsa	3 hr
Apr 30, 7:45 PM CDT	Flash Flood Warning	TSA	Craig, Creek, Mayes, Okmulgee, Osage, Rogers and 3 more	6 hr
Apr 30, 8:48 PM CDT	Flash Flood Warning	TSA	Cherokee, Delaware, Mayes, Ottawa	6 hr
Apr 30, 8:57 PM CDT	Special Weather Statement	TSA	McIntosh, Muskogee	48 min
Apr 30, 9:01 PM CDT	Special Weather Statement	TSA	Cherokee	29 min
Apr 30, 9:14 PM CDT	Special Weather Statement	TSA	Delaware	31 min
Apr 30, 9:17 PM CDT	Special Weather Statement	TSA	Adair, Cherokee, Muskogee	28 min
Apr 30, 9:43 PM CDT	Areal Flood Warning	TSA	Craig, Nowata, Osage, Rogers, Washington	21 hr
Apr 30, 9:49 PM CDT	Tornado Warning	TSA	Pittsburg	41 min
Apr 30, 9:54 PM CDT	Special Weather Statement	TSA	Adair	51 min
Apr 30, 10:22 PM CDT	Tornado Warning	TSA	Pittsburg	23 min
Apr 30, 10:36 PM CDT	Tornado Warning	TSA	Pittsburg	24 min
Apr 30, 10:42 PM CDT	Severe Thunderstorm Warning	TSA	Latimer, Pittsburg, Pushmataha	48 min
Apr 30, 10:47 PM CDT	Tornado Warning Tornado observed	TSA	Haskell, Latimer, Pittsburg	43 min
Apr 30, 11:18 PM CDT	Severe Thunderstorm Warning	TSA	Haskell, Latimer, LeFlore, Muskogee, Sequoyah	42 min
Apr 30, 11:21 PM CDT	Severe Thunderstorm Warning	TSA	Haskell, Latimer, LeFlore, Pushmataha	39 min
Apr 30, 11:44 PM CDT	Severe Thunderstorm Warning	TSA	Latimer, LeFlore	46 min
Apr 30, 11:53 PM CDT	Tornado Warning	TSA	LeFlore	24 min
May 1, 12:14 AM CDT	Areal Flood Warning	TSA	Craig, Delaware, Mayes, Ottawa	18 hr
May 1, 12:41 AM CDT	River Flood Warning	TSA	Ottawa	61 hr
May 1, 1:15 AM CDT	Areal Flood Advisory	TSA	Pittsburg	3 hr
May 1, 1:16 AM CDT	Areal Flood Warning	TSA	Delaware, Mayes, Ottawa	18 hr
May 1, 1:33 AM CDT	Special Weather Statement	TSA	Hughes	42 min
May 1, 1:37 AM CDT	Areal Flood Advisory	TSA	Choctaw, Latimer, LeFlore, Pittsburg, Pushmataha	3 hr
May 1, 2:36 AM CDT	Special Weather Statement	TSA	Okfuskee, Okmulgee	24 min
May 1, 2:49 AM CDT	Special Weather Statement	TSA	Okfuskee	41 min
May 1, 2:54 AM CDT	River Flood Warning	TSA	Creek	17 hr
May 1, 3:05 AM CDT	Areal Flood Advisory	TSA	Haskell, McIntosh, Okfuskee, Okmulgee, Pittsburg	3 hr
May 1, 3:17 AM CDT	Special Weather Statement	TSA	McIntosh, Muskogee, Okfuskee, Okmulgee	43 min
May 1, 3:47 AM CDT	Flash Flood Warning	TSA	McIntosh, Okfuskee, Okmulgee	6 hr
May 1, 3:54 AM CDT	Flash Flood Warning	TSA	Haskell, Latimer, McIntosh, Muskogee, Pittsburg	6 hr
May 1, 4:04 AM CDT	Special Weather Statement	TSA	Pittsburg	26 min
May 1, 4:20 AM CDT	Special Weather Statement	TSA	Haskell	25 min
May 1, 4:33 AM CDT	Special Weather Statement	TSA	Latimer, Pushmataha	42 min
May 1, 4:38 AM CDT	Special Weather Statement	TSA	LeFlore	52 min
May 1, 5:15 AM CDT	Flash Flood Warning	TSA	Haskell, Latimer, LeFlore, Pittsburg, Pushmataha	3 hr
May 1, 7:35 AM CDT	Areal Flood Warning	TSA	Haskell, Latimer, LeFlore, McIntosh, Muskogee, Okfuskee and 3 more	9 hr
May 1, 8:50 AM CDT	River Flood Warning	TSA	Adair, Cherokee, Delaware	30 hr
May 1, 2:51 PM CDT	River Flood Warning	TSA	LeFlore	11 hr
May 1, 3:18 PM CDT	Flash Flood Watch	TSA	Adair, Cherokee, McIntosh, Muskogee, Okfuskee, Okmulgee and 1 more	13 hr
May 1, 6:52 PM CDT	Special Weather Statement	TSA	Pittsburg	38 min
Apr 30, 7:26 PM CDT	Special Weather Statement	TSA	Carroll	49 min
Apr 30, 9:42 PM CDT	Special Weather Statement	TSA	Benton	48 min
Apr 30, 10:03 PM CDT	Areal Flood Advisory	TSA	Benton, Washington	3 hr
Apr 30, 10:10 PM CDT	Special Weather Statement	TSA	Carroll, Madison, Washington	50 min
Apr 30, 11:08 PM CDT	Special Weather Statement	TSA	Crawford	37 min
May 1, 12:29 AM CDT	Special Weather Statement	TSA	Franklin, Sebastian	31 min
May 1, 12:44 AM CDT	Severe Thunderstorm Warning	TSA	Sebastian	16 min
May 1, 1:02 AM CDT	Areal Flood Advisory	TSA	Crawford, Sebastian	3 hr
May 1, 1:04 AM CDT	Areal Flood Advisory	TSA	Benton, Washington	3 hr
May 1, 11:49 AM CDT	River Flood Advisory	TSA	Crawford, Franklin	3 hr

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2019 Severe Thunderstorm Warnings in Arkansas, 2019 Every severe thunderstorm warning in 2019

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.