Alert archive / Oklahoma / Tornado Warnings in 2017

Tornado Warning 38, NWS Tulsa, OK

May 27, 2017Creek County, Okfuskee County, Oklahoma

NWS Tulsa, OK issued this tornado warning at May 27, 2017, 8:26 PM CDT for Creek County, Okfuskee County, Oklahoma. It was in force for 49 min. 6 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 27, 2017, 8:26 PM CDT (01:26 UTC)
Expired: May 27, 2017, 9:15 PM CDT
In force: 49 min
Issued by: NWS Tulsa, OK
Area: Storm-based polygon
Tornado: Observed
Hail: 1.75 in

Counties Creek County, OK, Okfuskee County, OK

The radar

The Tulsa radar (KINX), 90 km from the middle of the area, began a volume at 01:30 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 27, 8:26 PM CDT	TORNADO	5 W Welty, OK	SEVERAL STORM CHASERS REPORTED A TORNADO. NWS STORM SURVEY COULD NOT ACCESS THE AREA WHERE THIS TORNADO LIKELY OCCURRED.
May 27, 8:39 PM CDT	HAIL 2	1 Ne Welty, OK	SPOTTER IS ON HIGHWAY 48 AT THE OKFUSKEE AND CREEK COUNTY LINE REPORTING HEAVY HAIL UP TO 2 INCHES IN DIAMETER.
May 27, 8:44 PM CDT	HAIL 1	1 E Welty, OK	BROKEN WINDSHIELD ON VEHICLE.
May 27, 8:53 PM CDT	HAIL 3	3 Nw Mason, OK
May 27, 8:53 PM CDT	HAIL 4.25	2 Sse Welty, OK	HAIL MEASURED 4.5 INCHES IN DIAMETER
May 27, 8:54 PM CDT	HAIL 2.75	1 W Okfuskee, 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
May 27, 4:01 PM CDT	Tornado Watch	SPC	10 hr

The nearest sounding before it

Norman, OK (KOUN), launched 00:00Z, 1.4 hours before the alert went out and 110 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: 5174 J/kg
Mixed-layer CIN: -10 J/kg
Mixed-layer LCL: 1475 m above ground
0-6 km bulk shear: 56 kt
0-1 km storm-relative helicity: 91 m²/s²
0-3 km storm-relative helicity: 119 m²/s²
Significant tornado parameter: 1.2
Supercell composite: 8.1

Open this sounding in Storm Lab

The text

As transmitted.

241 
WFUS54 KTSA 280126
TORTSA
OKC037-107-280215-
/O.NEW.KTSA.TO.W.0038.170528T0126Z-170528T0215Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Tulsa OK
826 PM CDT SAT MAY 27 2017

The National Weather Service in Tulsa has issued a

* Tornado Warning for...
  Southwestern Creek County in northeastern Oklahoma...
  Northwestern Okfuskee County in east central Oklahoma...

* Until 915 PM CDT

* At 826 PM CDT, a confirmed tornado was located 5 miles west of
  Welty, moving east at 25 mph.

  HAZARD...Damaging tornado and golf ball size hail. 

  SOURCE...Weather spotters confirmed tornado. 

  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...
  Okfuskee...                       Welty...
  Mason...                          

PRECAUTIONARY/PREPAREDNESS ACTIONS...

To repeat, a tornado is on the ground. 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 3576 9619 3556 9619 3555 9618 3546 9618
      3558 9655 3570 9656
TIME...MOT...LOC 0126Z 282DEG 22KT 3561 9649 

TORNADO...OBSERVED
HAIL...1.75IN

$$

2 follow-up statements

658 
WWUS54 KTSA 280139
SVSTSA

Severe Weather Statement
National Weather Service Tulsa OK
839 PM CDT SAT MAY 27 2017

OKC037-107-280215-
/O.CON.KTSA.TO.W.0038.000000T0000Z-170528T0215Z/
Creek OK-Okfuskee OK-
839 PM CDT SAT MAY 27 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 915 PM CDT FOR SOUTH
CENTRAL CREEK AND NORTHWESTERN OKFUSKEE COUNTIES...
    
At 839 PM CDT, a severe thunderstorm capable of producing a tornado
was located 4 miles southwest of Welty, moving southeast at 20 mph.

HAZARD...Tornado and golf 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...
Okfuskee...                       Welty...
Mason...                          

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 3576 9619 3556 9619 3555 9618 3546 9618
      3558 9655 3571 9649
TIME...MOT...LOC 0139Z 299DEG 16KT 3558 9645 

TORNADO...RADAR INDICATED
HAIL...1.75IN

$$

362 
WWUS54 KTSA 280141
SVSTSA

Severe Weather Statement
National Weather Service Tulsa OK
841 PM CDT SAT MAY 27 2017

OKC037-107-280215-
/O.CON.KTSA.TO.W.0038.000000T0000Z-170528T0215Z/
Creek OK-Okfuskee OK-
841 PM CDT SAT MAY 27 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 915 PM CDT FOR SOUTH
CENTRAL CREEK AND NORTHWESTERN OKFUSKEE COUNTIES...
    
At 841 PM CDT, a severe thunderstorm capable of producing a tornado
was located 3 miles southwest of Welty, moving east at 25 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...
Okfuskee...                       Welty...
Mason...                          

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 3576 9619 3556 9619 3555 9618 3546 9618
      3558 9655 3571 9649
TIME...MOT...LOC 0141Z 282DEG 22KT 3558 9643 

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

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
May 27, 7:15 PM CDT	Severe Thunderstorm Warning	TSA	Ottawa	20 min
May 27, 7:27 PM CDT	Severe Thunderstorm Warning	TSA	Craig, Mayes, Nowata, Rogers	63 min
May 27, 7:43 PM CDT	Special Weather Statement	TSA	Creek	47 min
May 27, 7:50 PM CDT	Severe Thunderstorm Warning	TSA	Creek, Okfuskee	55 min
May 27, 8:10 PM CDT	Severe Thunderstorm Warning	TSA	Craig, Delaware, Mayes	50 min
May 27, 8:33 PM CDT	Severe Thunderstorm Warning	TSA	Creek	30 min
May 27, 8:39 PM CDT	Special Weather Statement	TSA	Mayes	51 min
May 27, 8:48 PM CDT	Special Weather Statement	TSA	Tulsa	42 min
May 27, 8:52 PM CDT	Severe Thunderstorm Warning	TSA	Craig, Delaware, Mayes	53 min
May 27, 8:55 PM CDT	Severe Thunderstorm Warning	TSA	Creek, Tulsa	35 min
May 27, 8:58 PM CDT	Tornado Warning	TSA	Okfuskee	47 min
May 27, 9:09 PM CDT	Areal Flood Advisory	TSA	Creek, Okfuskee, Okmulgee	3 hr
May 27, 9:11 PM CDT	Tornado Warning	TSA	Okfuskee	34 min
May 27, 9:14 PM CDT	Severe Thunderstorm Warning	TSA	Creek, Okfuskee, Okmulgee	46 min
May 27, 9:16 PM CDT	Special Weather Statement	TSA	Rogers	29 min
May 27, 9:21 PM CDT	Severe Thunderstorm Warning	TSA	Mayes, Rogers, Wagoner	39 min
May 27, 9:26 PM CDT	Special Weather Statement	TSA	Tulsa	34 min
May 27, 9:39 PM CDT	Flash Flood Warning	TSA	Creek, Okfuskee	4 hr
May 27, 9:42 PM CDT	Severe Thunderstorm Warning	TSA	Adair, Cherokee, Delaware, Mayes, Wagoner	63 min
May 27, 9:43 PM CDT	Severe Thunderstorm Warning	TSA	Okfuskee	47 min
May 27, 9:46 PM CDT	Areal Flood Advisory	TSA	Delaware, Mayes	3 hr
May 27, 9:46 PM CDT	Severe Thunderstorm Warning	TSA	Creek, Muskogee, Okfuskee, Okmulgee, Wagoner	44 min
May 27, 10:14 PM CDT	Special Weather Statement	TSA	Adair	46 min
May 27, 10:17 PM CDT	Special Weather Statement	TSA	Delaware	43 min
May 27, 10:23 PM CDT	Severe Thunderstorm Warning	TSA	McIntosh, Muskogee, Okmulgee	37 min
May 27, 10:25 PM CDT	Severe Thunderstorm Warning	TSA	Pittsburg, Pushmataha	35 min
May 27, 10:32 PM CDT	Severe Thunderstorm Warning	TSA	Okfuskee	43 min
May 27, 10:44 PM CDT	Severe Thunderstorm Warning	TSA	Craig, Delaware, Mayes, Nowata, Ottawa, Rogers	61 min
May 27, 10:45 PM CDT	Areal Flood Advisory	TSA	Adair	3 hr
May 27, 10:48 PM CDT	Severe Thunderstorm Warning	TSA	Haskell, McIntosh, Muskogee, Sequoyah	42 min
May 27, 11:09 PM CDT	Severe Thunderstorm Warning	TSA	Craig, Ottawa	51 min
May 27, 11:10 PM CDT	Severe Thunderstorm Warning	TSA	Pittsburg, Pushmataha	65 min
May 27, 11:19 PM CDT	Severe Thunderstorm Warning	TSA	Adair, Cherokee, Haskell, LeFlore, Sequoyah	41 min
May 27, 11:40 PM CDT	Severe Thunderstorm Warning	TSA	Sequoyah	35 min
May 27, 11:53 PM CDT	Severe Thunderstorm Warning	TSA	Ottawa	37 min
May 28, 12:05 AM CDT	Severe Thunderstorm Warning	TSA	Latimer, LeFlore, Pittsburg, Pushmataha	40 min
May 28, 12:37 AM CDT	Severe Thunderstorm Warning	TSA	Latimer, LeFlore, Pushmataha	38 min
May 28, 12:58 AM CDT	Severe Thunderstorm Warning	TSA	LeFlore	32 min
May 28, 1:15 AM CDT	Special Weather Statement	TSA	Osage	30 min
May 28, 1:27 AM CDT	Special Weather Statement	TSA	Creek	33 min
May 28, 1:34 AM CDT	Severe Thunderstorm Warning	TSA	Creek	41 min
May 28, 1:44 AM CDT	Special Weather Statement	TSA	Okfuskee	31 min
May 28, 2:01 AM CDT	Severe Thunderstorm Warning	TSA	Creek, Okmulgee	26 min
May 28, 2:23 AM CDT	Special Weather Statement	TSA	Choctaw	37 min

Nearby

Tornado Warnings in Oklahoma, 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.