Alert archive / Oklahoma / Tornado Warnings in 2017

Tornado Warning 13, NWS Tulsa, OK

April 28, 2017LeFlore County, Sequoyah County, Oklahoma; Crawford County, Sebastian County, Arkansas

NWS Tulsa, OK issued this tornado warning at Apr 28, 2017, 10:58 PM CDT for LeFlore County, Sequoyah County, Oklahoma; Crawford County, Sebastian County, Arkansas. It was in force for 31 min. 3 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: Apr 28, 2017, 10:58 PM CDT (03:58 UTC)
Expired: Apr 28, 2017, 11:29 PM CDT
In force: 31 min
Issued by: NWS Tulsa, OK
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 2.5 in

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

The radar

The Western Arkansas radar (KSRX), 19 km from the middle of the area, began a volume at 03:59 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
Apr 28, 10:58 PM CDT	HAIL 1	Fort Smith, AR
Apr 28, 11:05 PM CDT	HAIL 0.75	Arkoma, OK
Apr 28, 11:15 PM CDT	HAIL 0.75	Moffett, OK

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 28, 10:01 PM CDT	Severe Thunderstorm Watch	SPC	9 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 4.0 hours before the alert went out and 170 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: 65 J/kg
Mixed-layer CIN: -331 J/kg
Mixed-layer LCL: 506 m above ground
0-6 km bulk shear: 74 kt
0-1 km storm-relative helicity: 55 m²/s²
0-3 km storm-relative helicity: 72 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

810 
WFUS54 KTSA 290358
TORTSA
ARC033-131-OKC079-135-290445-
/O.NEW.KTSA.TO.W.0013.170429T0358Z-170429T0445Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Tulsa OK
1058 PM CDT FRI APR 28 2017

The National Weather Service in Tulsa has issued a

* Tornado Warning for...
  Northwestern Sebastian County in west central Arkansas...
  Southwestern Crawford County in northwestern Arkansas...
  Southeastern Sequoyah County in east central Oklahoma...
  Northeastern Le Flore County in southeastern Oklahoma...

* Until 1145 PM CDT
    
* At 1057 PM CDT, a severe thunderstorm with strong low level
  rotation that could produce a tornado at any time was located over
  Bonanza, moving northeast at 35 mph.

  HAZARD...Tornado and tennis ball size hail. 

  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...
  Fort Smith...                     Van Buren...
  Cedarville...                     Mountainburg...
  Alma...                           Barling...
  Pocola...                         Lavaca...
  Spiro...                          Arkoma...
  Mulberry...                       Dyer...
  Hackett...                        Bonanza...
  Moffett...                        Rudy...
  Figure Five...                    Jenny Lind...
  Kibler...                         Central City...

This includes the following highways,
 Interstate 40 in Arkansas between mile markers 0 and 22.
 Interstate 40 in Oklahoma between mile markers 327 and 328.
 Interstate 540 between mile markers 1 and 14.
 Interstate 49 between mile markers 22 and 30.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 3530 9418 3517 9437 3524 9462 3564 9434
      3563 9409 3548 9405 3547 9406 3547 9405
TIME...MOT...LOC 0357Z 215DEG 31KT 3525 9441 

TORNADO...RADAR INDICATED
HAIL...2.50IN

$$

69

2 follow-up statements

427 
WWUS54 KTSA 290420
SVSTSA

Severe Weather Statement
National Weather Service Tulsa OK
1120 PM CDT FRI APR 28 2017

OKC079-290429-
/O.CAN.KTSA.TO.W.0013.000000T0000Z-170429T0445Z/
Le Flore OK-
1120 PM CDT FRI APR 28 2017

...THE TORNADO WARNING FOR NORTHEASTERN LE FLORE COUNTY IS
CANCELLED...
    
The tornadic thunderstorm which prompted the warning has moved out 
of the warned area. therefore the warning has been cancelled.

A severe thunderstorm watch remains in effect until 500 AM CDT for
northwestern and west central Arkansas...and southeastern and east
central Oklahoma.

LAT...LON 3535 9414 3535 9429 3536 9443 3538 9443
      3537 9445 3538 9447 3537 9448 3537 9453
      3564 9434 3563 9409 3547 9405
TIME...MOT...LOC 0419Z 216DEG 38KT 3541 9446 

$$

ARC033-131-OKC135-290445-
/O.CON.KTSA.TO.W.0013.000000T0000Z-170429T0445Z/
Sebastian AR-Crawford AR-Sequoyah OK-
1120 PM CDT FRI APR 28 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1145 PM CDT FOR
NORTHWESTERN SEBASTIAN...SOUTHWESTERN CRAWFORD AND EAST CENTRAL
SEQUOYAH COUNTIES...
    
At 1119 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Moffett, moving northeast at 45 mph.

HAZARD...Tornado and quarter size hail. 

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...
Fort Smith...                     Van Buren...
Cedarville...                     Mountainburg...
Alma...                           Mulberry...
Dyer...                           Moffett...
Rudy...                           Figure Five...
Kibler...                         Concord...
Shibley...                        Dora...
Furry...                          

This includes the following highways,
 Interstate 40 in Arkansas between mile markers 0 and 21.
 Interstate 40 in Oklahoma between mile markers 326 and 328.
 Interstate 540 between mile markers 1 and 8.
 Interstate 49 between mile markers 22 and 30.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 3535 9414 3535 9429 3536 9443 3538 9443
      3537 9445 3538 9447 3537 9448 3537 9453
      3564 9434 3563 9409 3547 9405
TIME...MOT...LOC 0419Z 216DEG 38KT 3541 9446 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

69

425 
WWUS54 KTSA 290429 RRA
SVSTSA

Severe Weather Statement
National Weather Service Tulsa OK
1129 PM CDT FRI APR 28 2017

ARC033-131-OKC135-290439-
/O.CAN.KTSA.TO.W.0013.000000T0000Z-170429T0445Z/
Sebastian AR-Crawford AR-Sequoyah OK-
1129 PM CDT FRI APR 28 2017

...THE TORNADO WARNING FOR NORTHWESTERN SEBASTIAN...SOUTHWESTERN
CRAWFORD AND EAST CENTRAL SEQUOYAH COUNTIES IS CANCELLED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore the warning has been cancelled.  However gusty winds are
still possible with this thunderstorm.

A severe thunderstorm watch remains in effect until 500 AM CDT for
northwestern and west central Arkansas...and southeastern and east
central Oklahoma.

LAT...LON 3535 9414 3535 9429 3536 9443 3538 9443
      3537 9445 3538 9447 3537 9448 3537 9453
      3564 9434 3563 9409 3547 9405
TIME...MOT...LOC 0427Z 215DEG 31KT 3548 9440 

$$

69

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 28, 9:54 PM CDT	Special Weather Statement	TSA	LeFlore	36 min
Apr 28, 10:00 PM CDT	Severe Thunderstorm Warning	TSA	LeFlore, Sequoyah	45 min
Apr 28, 10:25 PM CDT	Tornado Warning	TSA	LeFlore, Sequoyah	35 min
Apr 28, 10:45 PM CDT	Special Weather Statement	TSA	McIntosh	30 min
Apr 28, 10:48 PM CDT	Severe Thunderstorm Warning	TSA	Adair, Sequoyah	27 min
Apr 28, 11:01 PM CDT	Special Weather Statement	TSA	Tulsa	29 min
Apr 28, 11:07 PM CDT	Special Weather Statement	TSA	Osage	23 min
Apr 28, 11:10 PM CDT	Severe Thunderstorm Warning	TSA	McIntosh, Muskogee, Pittsburg	65 min
Apr 28, 11:15 PM CDT	Severe Thunderstorm Warning	TSA	Osage	30 min
Apr 28, 11:18 PM CDT	Severe Thunderstorm Warning	TSA	Rogers, Tulsa	27 min
Apr 28, 11:25 PM CDT	Special Weather Statement	TSA	Creek	35 min
Apr 28, 11:40 PM CDT	Severe Thunderstorm Warning	TSA	Creek, Osage, Pawnee, Tulsa	35 min
Apr 28, 11:48 PM CDT	Severe Thunderstorm Warning	TSA	Adair	27 min
Apr 28, 11:53 PM CDT	Special Weather Statement	TSA	Washington	37 min
Apr 29, 12:03 AM CDT	Areal Flood Advisory	TSA	Adair, Cherokee, Delaware, McIntosh, Mayes, Muskogee and 3 more	4 hr
Apr 29, 12:11 AM CDT	Special Weather Statement	TSA	Delaware	34 min
Apr 29, 12:13 AM CDT	Severe Thunderstorm Warning	TSA	Cherokee, Muskogee, Wagoner	32 min
Apr 29, 12:18 AM CDT	Special Weather Statement	TSA	Mayes	27 min
Apr 29, 12:26 AM CDT	Special Weather Statement	TSA	Muskogee, Wagoner	34 min
Apr 29, 12:27 AM CDT	Special Weather Statement	TSA	Nowata	18 min
Apr 29, 12:43 AM CDT	Severe Thunderstorm Warning	TSA	Adair, Cherokee	32 min
Apr 29, 12:46 AM CDT	Special Weather Statement	TSA	Mayes	29 min
Apr 29, 12:49 AM CDT	Special Weather Statement	TSA	Osage	26 min
Apr 29, 12:54 AM CDT	Flash Flood Warning	TSA	Adair, Cherokee, Muskogee, Wagoner	4 hr
Apr 29, 12:54 AM CDT	Special Weather Statement	TSA	Muskogee	36 min
Apr 29, 1:00 AM CDT	Severe Thunderstorm Warning	TSA	Cherokee, Muskogee, Wagoner	30 min
Apr 29, 1:15 AM CDT	Special Weather Statement	TSA	Adair	30 min
Apr 29, 1:26 AM CDT	Severe Thunderstorm Warning	TSA	Adair, Delaware	34 min
Apr 29, 1:28 AM CDT	Severe Thunderstorm Warning	TSA	Adair, Cherokee	47 min
Apr 29, 1:36 AM CDT	Special Weather Statement	TSA	Washington	24 min
Apr 29, 1:54 AM CDT	Special Weather Statement	TSA	Cherokee	36 min
Apr 29, 2:01 AM CDT	Severe Thunderstorm Warning	TSA	Adair, Delaware	29 min
Apr 29, 2:04 AM CDT	Special Weather Statement	TSA	Nowata	26 min
Apr 29, 2:07 AM CDT	Special Weather Statement	TSA	Pawnee	38 min
Apr 29, 2:21 AM CDT	Areal Flood Advisory	TSA	Craig, Delaware, Mayes, Ottawa	3 hr
Apr 29, 2:41 AM CDT	Special Weather Statement	TSA	Osage, Pawnee	34 min
Apr 29, 2:46 AM CDT	Special Weather Statement	TSA	Delaware, Ottawa	44 min
Apr 29, 3:03 AM CDT	Special Weather Statement	TSA	Pawnee	57 min
Apr 29, 3:34 AM CDT	Severe Thunderstorm Warning	TSA	Creek, Pawnee	56 min
Apr 29, 3:39 AM CDT	Special Weather Statement	TSA	Osage	36 min
Apr 29, 4:15 AM CDT	Severe Thunderstorm Warning	TSA	Creek, Osage, Pawnee, Tulsa	30 min
Apr 29, 4:40 AM CDT	Severe Thunderstorm Warning	TSA	Nowata, Osage, Rogers, Tulsa, Washington	35 min
Apr 29, 5:07 AM CDT	Areal Flood Warning	TSA	Adair, Cherokee, Muskogee, Wagoner	6 hr
Apr 29, 5:13 AM CDT	Severe Thunderstorm Warning	TSA	Craig, Mayes, Nowata, Rogers, Tulsa, Washington	32 min
Apr 29, 5:17 AM CDT	Special Weather Statement	TSA	Pawnee	28 min
Apr 29, 5:40 AM CDT	Severe Thunderstorm Warning	TSA	Osage, Pawnee	35 min
Apr 29, 5:42 AM CDT	Severe Thunderstorm Warning	TSA	Craig, Delaware, Mayes, Nowata, Ottawa, Rogers	33 min
Apr 29, 6:14 AM CDT	Severe Thunderstorm Warning	TSA	Craig, Delaware, Ottawa	31 min
Apr 29, 6:16 AM CDT	Special Weather Statement	TSA	Washington	44 min
Apr 29, 6:19 AM CDT	Special Weather Statement	TSA	Osage	41 min
Apr 29, 6:36 AM CDT	Special Weather Statement	TSA	Creek, Pawnee	39 min
Apr 29, 6:42 AM CDT	Flash Flood Warning	TSA	Osage, Pawnee	4 hr
Apr 29, 6:45 AM CDT	Severe Thunderstorm Warning	TSA	Delaware, Ottawa	24 min
Apr 29, 8:17 AM CDT	River Flood Warning	TSA	Osage	30 hr
Apr 29, 8:33 AM CDT	Areal Flood Advisory	TSA	Creek, Muskogee, Okfuskee, Okmulgee, Osage, Pawnee and 3 more	3 hr
Apr 29, 8:38 AM CDT	Flash Flood Warning	TSA	Adair, Cherokee, Delaware	10 hr
Apr 29, 10:35 AM CDT	Flash Flood Warning	TSA	Cherokee, Delaware, McIntosh, Mayes, Muskogee, Sequoyah and 1 more	8 hr
Apr 29, 10:36 AM CDT	Flash Flood Warning	TSA	Craig, Delaware, Ottawa	8 hr
Apr 29, 10:37 AM CDT	Special Weather Statement	TSA	Delaware	23 min
Apr 29, 12:36 PM CDT	Flash Flood Warning	TSA	Adair, Cherokee, Haskell, LeFlore, Sequoyah	6 hr
Apr 29, 12:55 PM CDT	Special Weather Statement	TSA	Sequoyah	35 min
Apr 29, 1:16 PM CDT	Special Weather Statement	TSA	Rogers, Tulsa	29 min
Apr 29, 1:24 PM CDT	Special Weather Statement	TSA	Okmulgee	36 min
Apr 29, 2:23 PM CDT	River Flood Warning	TSA	Pawnee	32 hr
Apr 29, 2:39 PM CDT	Flash Flood Warning	TSA	Craig, Mayes, Muskogee, Nowata, Rogers, Wagoner	4 hr
Apr 29, 3:05 PM CDT	Special Weather Statement	TSA	McIntosh	25 min
Apr 29, 3:13 PM CDT	Areal Flood Warning	TSA	Creek, McIntosh, Okmulgee, Osage, Pawnee, Rogers and 2 more	6 hr
Apr 29, 3:46 PM CDT	Special Weather Statement	TSA	Latimer	29 min
Apr 29, 4:12 PM CDT	Severe Thunderstorm Warning	TSA	Haskell, Latimer, Pittsburg	33 min
Apr 29, 4:15 PM CDT	Severe Thunderstorm Warning	TSA	Haskell, Muskogee	30 min
Apr 29, 4:19 PM CDT	Tornado Warning	TSA	Adair, Sequoyah	26 min
Apr 29, 4:42 PM CDT	Tornado Warning	TSA	Haskell	33 min
Apr 29, 4:43 PM CDT	Severe Thunderstorm Warning	TSA	Adair, Sequoyah	32 min
Apr 29, 4:49 PM CDT	Severe Thunderstorm Warning	TSA	Haskell, Latimer, McIntosh, Muskogee, Pittsburg	26 min
Apr 29, 4:54 PM CDT	Special Weather Statement	TSA	Pittsburg	36 min
Apr 29, 4:58 PM CDT	Tornado Warning	TSA	Adair	14 min
Apr 29, 5:01 PM CDT	Severe Thunderstorm Warning	TSA	Adair, Cherokee, Sequoyah	29 min
Apr 29, 5:03 PM CDT	Special Weather Statement	TSA	McIntosh	42 min
Apr 29, 5:09 PM CDT	Severe Thunderstorm Warning	TSA	Haskell, Muskogee, Sequoyah	36 min
Apr 29, 5:16 PM CDT	Severe Thunderstorm Warning	TSA	Haskell, Muskogee	29 min

Nearby

Tornado Warnings in Oklahoma, 2017 Tornado Warnings in Arkansas, 2017 Every tornado warning in 2017 Tornadoes in 2017

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.