Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 7, NWS Tulsa, OK

March 1, 2017Haskell County, Latimer County, LeFlore County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at Mar 1, 2017, 12:52 AM CST for Haskell County, Latimer County, LeFlore County, Oklahoma. It was in force for 38 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: Mar 1, 2017, 12:52 AM CST (06:52 UTC)
Expired: Mar 1, 2017, 1:30 AM CST
In force: 38 min
Issued by: NWS Tulsa, OK
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Haskell County, OK, Latimer County, OK, LeFlore County, OK

The radar

The Western Arkansas radar (KSRX), 36 km from the middle of the area, began a volume at 06:51 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
Mar 1, 1:00 AM CST	TSTM WND DMG	Panama, OK	POWER POLE SNAPPED AND POWER LINES DOWN IN TOWN. POWER OUT TO ENTIRE TOWN.

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
Feb 28, 11:35 PM CST	Tornado Watch	SPC	5 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 6.9 hours before the alert went out and 207 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: 1117 J/kg
Mixed-layer CIN: -52 J/kg
Mixed-layer LCL: 931 m above ground
0-6 km bulk shear: 65 kt
0-1 km storm-relative helicity: 341 m²/s²
0-3 km storm-relative helicity: 315 m²/s²
Significant tornado parameter: 2.3
Supercell composite: 8.2

Open this sounding in Storm Lab

The text

As transmitted.

357 
WUUS54 KTSA 010652
SVRTSA
OKC061-077-079-010730-
/O.NEW.KTSA.SV.W.0007.170301T0652Z-170301T0730Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Tulsa OK
1252 AM CST WED MAR 1 2017

The National Weather Service in Tulsa has issued a

* Severe Thunderstorm Warning for...
  Southeastern Haskell County in southeastern Oklahoma...
  Northeastern Latimer County in southeastern Oklahoma...
  Northern Le Flore County in southeastern Oklahoma...

* Until 130 AM CST

* At 1252 AM CST, severe thunderstorms were located along a line
  extending from 4 miles northwest of McCurtain to 4 miles south of
  Lequire to 3 miles east of Wilburton, moving east at 65 mph.

  HAZARD...60 mph wind gusts and penny size hail. 

  SOURCE...Radar indicated. 

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

* Locations in or near the path include...
  Poteau...                         Wilburton...
  Spiro...                          Panama...
  Wister...                         Howe...
  Keota...                          Red Oak...
  McCurtain...                      Bokoshe...
  Fanshawe...                       Cameron...
  Mc Curtain...                     Lake Wister State Park...
  Lequire...                        Shady Point...
  Scullyville...                    Panola...
  Summerfield...                    Milton...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

A tornado watch remains in effect until 600 AM CST for southeastern
and east central Oklahoma.

LAT...LON 3512 9454 3489 9464 3488 9537 3505 9524
      3522 9518 3532 9468 3530 9468 3529 9466
      3529 9463 3533 9460 3533 9457 3530 9454
      3531 9452
TIME...MOT...LOC 0652Z 252DEG 58KT 3519 9503 3504 9512 3490 9524 

HAIL...0.75IN
WIND...60MPH
 
$$

Lacy

2 follow-up statements

697 
WWUS54 KTSA 010713
SVSTSA

Severe Weather Statement
National Weather Service Tulsa OK
113 AM CST WED MAR 1 2017

OKC061-010723-
/O.CAN.KTSA.SV.W.0007.000000T0000Z-170301T0730Z/
Haskell OK-
113 AM CST WED MAR 1 2017

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN 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 600 AM CST for southeastern
and east central Oklahoma.

LAT...LON 3512 9454 3489 9464 3488 9531 3501 9511
      3506 9513 3506 9493 3520 9493 3520 9482
      3529 9481 3532 9468 3530 9468 3529 9463
      3533 9460 3533 9457 3530 9454 3531 9452
TIME...MOT...LOC 0713Z 256DEG 61KT 3523 9464 3508 9473 3501 9491 

$$

OKC077-079-010730-
/O.CON.KTSA.SV.W.0007.000000T0000Z-170301T0730Z/
Latimer OK-Le Flore OK-
113 AM CST WED MAR 1 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 130 AM CST
FOR NORTHEASTERN LATIMER AND NORTHERN LE FLORE COUNTIES...

At 113 AM CST, severe thunderstorms were located along a line
extending from near Spiro to 6 miles west of Poteau to 3 miles north
of Fanshawe, moving east at 70 mph.

HAZARD...60 mph wind gusts. 

SOURCE...Radar indicated. 

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

Locations in or near the path include...
Poteau...                         Spiro...
Panama...                         Wister...
Howe...                           Red Oak...
Bokoshe...                        Fanshawe...
Cameron...                        Lake Wister State Park...
Shady Point...                    Scullyville...
Panola...                         Summerfield...
Milton...                         

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

A tornado watch remains in effect until 600 AM CST for southeastern
and east central Oklahoma.

LAT...LON 3512 9454 3489 9464 3488 9531 3501 9511
      3506 9513 3506 9493 3520 9493 3520 9482
      3529 9481 3532 9468 3530 9468 3529 9463
      3533 9460 3533 9457 3530 9454 3531 9452
TIME...MOT...LOC 0713Z 256DEG 61KT 3523 9464 3508 9473 3501 9491 

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

Lacy

150 
WWUS54 KTSA 010728
SVSTSA

Severe Weather Statement
National Weather Service Tulsa OK
128 AM CST WED MAR 1 2017

OKC077-079-010738-
/O.EXP.KTSA.SV.W.0007.000000T0000Z-170301T0730Z/
Latimer OK-Le Flore OK-
128 AM CST WED MAR 1 2017

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN LATIMER AND
NORTHERN LE FLORE COUNTIES WILL EXPIRE AT 130 AM CST...
            
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore the warning will be allowed to expire.

A tornado watch remains in effect until 600 AM CST for southeastern
and east central Oklahoma.

LAT...LON 3512 9454 3489 9464 3488 9531 3501 9511
      3506 9513 3506 9493 3520 9493 3520 9482
      3529 9481 3532 9468 3530 9468 3529 9463
      3533 9460 3533 9457 3530 9454 3531 9452
TIME...MOT...LOC 0728Z 252DEG 58KT 3529 9440 3514 9449 3507 9467 

$$

Lacy

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 28, 10:29 PM CST	Severe Thunderstorm Warning	TSA	Osage	31 min
Feb 28, 10:42 PM CST	Special Weather Statement	TSA	Washington	33 min
Feb 28, 10:59 PM CST	Special Weather Statement	TSA	Washington	31 min
Feb 28, 11:06 PM CST	Special Weather Statement	TSA	Craig, Nowata, Washington	24 min
Feb 28, 11:10 PM CST	Severe Thunderstorm Warning	TSA	Nowata, Washington	50 min
Feb 28, 11:35 PM CST	Special Weather Statement	TSA	Craig, Nowata, Ottawa	55 min
Feb 28, 11:39 PM CST	Special Weather Statement	TSA	Haskell, Pittsburg	36 min
Feb 28, 11:50 PM CST	Severe Thunderstorm Warning	TSA	Pittsburg	40 min
Mar 1, 12:19 AM CST	Severe Thunderstorm Warning	TSA	Latimer, Pittsburg	56 min
Mar 1, 12:26 AM CST	Special Weather Statement	TSA	Haskell, Sequoyah	34 min
Mar 1, 12:40 AM CST	Special Weather Statement	TSA	Pushmataha	50 min
Mar 1, 12:47 AM CST	Severe Thunderstorm Warning	TSA	LeFlore, Sequoyah	43 min
Mar 1, 12:49 AM CST	Severe Thunderstorm Warning	TSA	Latimer, LeFlore, Pittsburg, Pushmataha	41 min
Mar 1, 1:09 AM CST	Special Weather Statement	TSA	Choctaw	51 min
Mar 1, 1:19 AM CST	Special Weather Statement	TSA	Adair, Cherokee	26 min
Mar 1, 1:27 AM CST	Special Weather Statement	TSA	LeFlore	33 min
Mar 1, 1:43 AM CST	Special Weather Statement	TSA	Adair, Cherokee	32 min
Mar 1, 2:07 AM CST	Special Weather Statement	TSA	Adair	38 min
Mar 1, 1:27 PM CST	Red Flag Warning	TSA	Adair, Cherokee, Choctaw, Creek, Haskell, Latimer and 13 more	6 hr

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2017 Every severe thunderstorm warning 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.