Alert archive / Oklahoma / Tornado Warnings in 2015

Tornado Warning 33, NWS Tulsa, OK

May 10, 2015Haskell County, Latimer County, LeFlore County, Oklahoma

NWS Tulsa, OK issued this tornado warning at May 10, 2015, 7:55 PM CDT for Haskell County, Latimer County, LeFlore County, Oklahoma. It was in force for 20 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: May 10, 2015, 7:55 PM CDT (00:55 UTC)
Expired: May 10, 2015, 8:15 PM CDT
In force: 20 min
Issued by: NWS Tulsa, OK
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.25 in

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

The radar

The Western Arkansas radar (KSRX), 57 km from the middle of the area, began a volume at 00:57 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.

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 10, 12:58 PM CDT	Tornado Watch	SPC	10 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 0.9 hours before the alert went out and 221 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: 66 J/kg
Mixed-layer CIN: -169 J/kg
Mixed-layer LCL: 1012 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 263 m²/s²
0-3 km storm-relative helicity: 260 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

165 
WFUS54 KTSA 110055
TORTSA
OKC061-077-079-110130-
/O.NEW.KTSA.TO.W.0033.150511T0055Z-150511T0130Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TULSA OK
755 PM CDT SUN MAY 10 2015

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* TORNADO WARNING FOR...
  EASTERN HASKELL COUNTY IN SOUTHEAST OKLAHOMA...
  NORTHEASTERN LATIMER COUNTY IN SOUTHEAST OKLAHOMA...
  NORTH CENTRAL LE FLORE COUNTY IN SOUTHEAST OKLAHOMA...

* UNTIL 830 PM CDT

* AT 754 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED NEAR RED OAK...AND MOVING NORTHEAST AT 40 MPH.

  HAZARD...TORNADO AND HALF DOLLAR 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...MCCURTAIN...MILTON...KEOTA
  AND BOKOSHE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. GO TO A DESIGNED SHELTER SUCH AS A SAFE ROOM OR STORM
CELLAR IF AVAILABLE. OTHERWISE...MOVE TO AN INTERIOR ROOM ON THE
LOWEST FLOOR OF A STURDY BUILDING. AVOID WINDOWS. IF SEEKING SHELTER
IN A BASEMENT...BE SURE TO GET BENEATH SOMETHING STURDY. IF IN A
MOBILE HOME...A VEHICLE OR OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL
SHELTER AND PROTECT YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 3534 9496 3514 9467 3491 9506 3501 9516
TIME...MOT...LOC 0056Z 226DEG 34KT 3502 9501

TORNADO...RADAR INDICATED
HAIL...1.25IN

$$

1 follow-up statement

512 
WWUS54 KTSA 110115
SVSTSA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
815 PM CDT SUN MAY 10 2015

OKC061-077-079-110125-
/O.CAN.KTSA.TO.W.0033.000000T0000Z-150511T0130Z/
HASKELL OK-LE FLORE OK-LATIMER OK-
815 PM CDT SUN MAY 10 2015

...THE TORNADO WARNING FOR NORTHEASTERN LATIMER...NORTH CENTRAL LE
FLORE AND EASTERN HASKELL COUNTIES IS CANCELLED...

THE TORNADO THREAT HAS DIMINISHED...THEREFORE THE TORNADO WARNING HAS
BEEN CANCELLED. HOWEVER...A SEVERE THUNDERSTORM WARNING REMAINS IN
EFFECT FOR THE AREA.

ADDITIONAL SEVERE THUNDERSTORMS ARE STILL POSSIBLE...AND A TORNADO 
WATCH REMAINS IN EFFECT UNTIL 9 PM.

LAT...LON 3534 9496 3514 9467 3491 9506 3501 9516
TIME...MOT...LOC 0115Z 226DEG 34KT 3514 9485

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
May 10, 7:01 PM CDT	Severe Thunderstorm Warning	TSA	LeFlore	44 min
May 10, 7:21 PM CDT	Tornado Warning	TSA	Haskell, Latimer	39 min
May 10, 7:30 PM CDT	Severe Thunderstorm Warning	TSA	LeFlore	45 min
May 10, 8:14 PM CDT	Severe Thunderstorm Warning	TSA	Haskell, Latimer, LeFlore, Sequoyah	46 min
May 10, 8:21 PM CDT	Tornado Warning	TSA	LeFlore	39 min
May 10, 8:28 PM CDT	Special Weather Statement	TSA	Pushmataha	47 min
May 10, 8:30 PM CDT	Flash Flood Warning	TSA	Haskell, LeFlore, Sequoyah	6 hr
May 10, 8:38 PM CDT	Severe Thunderstorm Warning	TSA	LeFlore, Sequoyah	52 min
May 10, 9:07 PM CDT	Special Weather Statement	TSA	Latimer	38 min
May 10, 11:55 PM CDT	Flash Flood Warning	TSA	Haskell, Latimer, LeFlore, Pittsburg, Pushmataha	3 hr
May 11, 2:28 AM CDT	Flash Flood Warning	TSA	Haskell, LeFlore, Sequoyah	3 hr
May 11, 4:20 AM CDT	River Flood Warning	TSA	Sequoyah	28 hr
May 11, 1:51 PM CDT	Areal Flood Warning	TSA	Adair, Cherokee, Haskell, Latimer, LeFlore, McIntosh and 6 more	24 hr

Nearby

Tornado Warnings in Oklahoma, 2015 Every tornado warning in 2015 Tornadoes in 2015

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.