Alert archive / Oklahoma / Tornado Warnings in 2008

Tornado Warning 94, NWS Tulsa, OK

May 10, 2008LeFlore County, Oklahoma

NWS Tulsa, OK issued this tornado warning at May 10, 2008, 7:00 PM CDT for LeFlore County, Oklahoma. It was in force for 19 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, 2008, 7:00 PM CDT (00:00 UTC)
Expired: May 10, 2008, 7:19 PM CDT
In force: 19 min
Issued by: NWS Tulsa, OK
Area: Storm-based polygon

County LeFlore County, OK

The radar

The Western Arkansas radar (KSRX), 90 km from the middle of the area, began a volume at 00:04 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, 1:38 PM CDT	Tornado Watch	SPC	10 hr

The nearest sounding before it

Shreveport, LA (KSHV), launched 00:00Z, 0.0 hours before the alert went out and 246 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: 2721 J/kg
Mixed-layer CIN: -14 J/kg
Mixed-layer LCL: 833 m above ground
0-6 km bulk shear: 54 kt
0-1 km storm-relative helicity: 162 m²/s²
0-3 km storm-relative helicity: 199 m²/s²
Significant tornado parameter: 3.5
Supercell composite: 13.4

Open this sounding in Storm Lab

The text

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

000 
WFUS54 KTSA 110000
TORTSA
OKC079-110045-
/O.NEW.KTSA.TO.W.0094.080511T0000Z-080511T0045Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TULSA OK
700 PM CDT SAT MAY 10 2008

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHEASTERN LE FLORE COUNTY IN SOUTHEAST OKLAHOMA

* UNTIL 745 PM CDT

* AT 659 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR DETECTED A
  POTENTIALLY TORNADIC THUNDERSTORM WITH STRONG LOW LEVEL ROTATION 4
  MILES SOUTHWEST OF OCTAVIA...MOVING EAST AT 40 MPH. THIS IS A
  DANGEROUS STORM...A TORNADO IS OCCURRING OR COULD FORM AT ANY TIME.

* SOME LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...OCTAVIA AND
  BIG CEDAR.

IF YOU ARE NEAR THE PATH OF THIS STORM...TAKE COVER NOW IF NO
UNDERGROUND SHELTER IS AVAILABLE MOVE TO AN INTERIOR ROOM ON THE
LOWEST FLOOR. MOBILE HOMES AND VEHICLES SHOULD BE ABANDONED FOR MORE
SUBSTANTIAL SHELTER. AVOID WINDOWS

LAT...LON 3450 9494 3453 9494 3470 9477 3464 9444
      3452 9445 3450 9447 3450 9469 3449 9471
      3449 9491
TIME...MOT...LOC 0000Z 290DEG 36KT 3449 9475

$$

3 follow-up statements

000 
WWUS54 KTSA 110010
SVSTSA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
710 PM CDT SAT MAY 10 2008

OKC079-110045-
/O.CON.KTSA.TO.W.0094.000000T0000Z-080511T0045Z/
LE FLORE OK-
710 PM CDT SAT MAY 10 2008

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 745 PM CDT FOR
SOUTHEASTERN LE FLORE COUNTY...

AT 708 PM CDT...WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS STORM WAS
LOCATED NEAR OCTAVIA...MOVING EAST AT 40 MPH.

IF YOU ARE NEAR THE PATH OF THIS STORM...TAKE COVER NOW IF NO 
UNDERGROUND SHELTER IS AVAILABLE MOVE TO AN INTERIOR ROOM ON THE 
LOWEST FLOOR. MOBILE HOMES AND VEHICLES SHOULD BE ABANDONED FOR MORE 
SUBSTANTIAL SHELTER. AVOID WINDOWS

LAT...LON 3450 9489 3467 9466 3464 9444 3452 9445
      3450 9447 3450 9469 3449 9471
TIME...MOT...LOC 0010Z 290DEG 36KT 3445 9466

$$

000 
WWUS54 KTSA 110016
SVSTSA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
716 PM CDT SAT MAY 10 2008

OKC079-110045-
/O.CON.KTSA.TO.W.0094.000000T0000Z-080511T0045Z/
LE FLORE OK-
716 PM CDT SAT MAY 10 2008

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 745 PM CDT FOR
SOUTHEASTERN LE FLORE COUNTY...

AT 712 PM CDT...WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS STORM WAS
LOCATED OVER NORTHERN MCCURTAIN COUNTY...MOVING EAST AT 40 MPH.

IF YOU ARE NEAR THE PATH OF THIS STORM...TAKE COVER NOW IF NO
UNDERGROUND SHELTER IS AVAILABLE MOVE TO AN INTERIOR ROOM ON THE
LOWEST FLOOR. MOBILE HOMES AND VEHICLES SHOULD BE ABANDONED FOR MORE
SUBSTANTIAL SHELTER. AVOID WINDOWS

LAT...LON 3462 9460 3464 9445 3463 9444 3452 9445
      3450 9447 3450 9469 3451 9472
TIME...MOT...LOC 0016Z 290DEG 36KT 3443 9459

$$

000 
WWUS54 KTSA 110019 RRB
SVSTSA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
719 PM CDT SAT MAY 10 2008

OKC079-110029-
/O.CAN.KTSA.TO.W.0094.000000T0000Z-080511T0045Z/
LE FLORE OK-
719 PM CDT SAT MAY 10 2008

...THE TORNADO WARNING FOR SOUTHEASTERN LE FLORE COUNTY IS
CANCELLED...

THE THUNDERSTORM HAS MOVED OUT OF THE WARNED AREA...THEREFORE THE
TORNADO WARNING HAS BEEN CANCELLED.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 9 PM

LAT...LON 3462 9460 3464 9445 3463 9444 3452 9445
      3450 9447 3450 9469 3451 9472
TIME...MOT...LOC 0019Z 290DEG 36KT 3442 9456

$$

Nearby

Tornado Warnings in Oklahoma, 2008 Every tornado warning in 2008 Tornadoes in 2008

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.