Alert archive / Oklahoma / Tornado Warnings in 2010

Tornado Warning 21, NWS Norman, OK

May 10, 20105 counties in Oklahoma

NWS Norman, OK issued this tornado warning at May 10, 2010, 6:37 PM CDT for 5 counties in Oklahoma. It was in force for 53 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: May 10, 2010, 6:37 PM CDT (23:37 UTC)
Expired: May 10, 2010, 7:30 PM CDT
In force: 53 min
Issued by: NWS Norman, OK
Area: Storm-based polygon

Counties Cleveland County, OK, McClain County, OK, Pontotoc County, OK, Pottawatomie County, OK, Seminole County, OK

The radar

The Norman radar (KTLX), 29 km from the middle of the area, began a volume at 23:40 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 10, 6:38 PM CDT	TORNADO	3 Sw Purcell, OK	NUMEROUS REPORTS OF STRUCTURAL DAMAGE ALONG A LINE FROM THE MID AMERICA TECHNOLOGY CENTER...TO SE OF LEXINGTON...TO ALONG HIGHWAY 39 IN S CLEVELAND CO...AND JUST INTO SOUTHWEST POTTAWATOMIE COUNTY. THE SPATIAL CONSISTENCY OF THE REPORTS SUGGESTS A POSSIBLE TOR
May 10, 7:20 PM CDT	TSTM WND DMG	Maud, OK	SHINGLES BLOWN OFF ROOF AND TREE LIMBS DOWN. ALSO QUARTER SIZE HAIL REPORTED. APPROXIMATE TIME.
May 10, 7:20 PM CDT	HAIL 1	Maud, OK	APPROXIMATE TIME. ALSO SHINGLES BLOWN OFF ROOF AND TREE LIMBS BLOWN DOWN.

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 10, 1:25 PM CDT	Tornado Watch PDS	SPC	9 hr
May 10, 5:00 PM CDT	Tornado Watch PDS	SPC	6 hr

The nearest sounding before it

Norman, OK (KOUN), launched 12:00Z, 11.6 hours before the alert went out and 32 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: 53 J/kg
Mixed-layer CIN: -331 J/kg
Mixed-layer LCL: 442 m above ground
0-6 km bulk shear: 55 kt
0-1 km storm-relative helicity: 640 m²/s²
0-3 km storm-relative helicity: 652 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 5.3

Open this sounding in Storm Lab

The text

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

069 
WFUS54 KOUN 102337
TOROUN
OKC027-087-123-125-133-110030-
/O.NEW.KOUN.TO.W.0021.100510T2337Z-100511T0030Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NORMAN OK
637 PM CDT MON MAY 10 2010

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHERN CLEVELAND COUNTY IN CENTRAL OKLAHOMA...
  CENTRAL MCCLAIN COUNTY IN CENTRAL OKLAHOMA...
  POTTAWATOMIE COUNTY IN CENTRAL OKLAHOMA...
  NORTHWESTERN PONTOTOC COUNTY IN EAST CENTRAL OKLAHOMA...
  WESTERN SEMINOLE COUNTY IN EAST CENTRAL OKLAHOMA...

* UNTIL 730 PM CDT

* AT 637 PM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE
  THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR PURCELL...MOVING
  EAST AT 60 MPH.

* LOCATIONS IN THE WARNING INCLUDE ASHER...BETHEL ACRES...BOWLEGS...
  BROOKSVILLE...CENTERVIEW...EARLSBORO...ETOWAH...GOLDSBY...HARJO...
  JOHNSON...KONAWA...LAKE THUNDERBIRD...LEXINGTON...LIMA...LITTLE...
  MACOMB...MAUD...NOBLE...PINK...PURCELL...ROSEDALE...SASAKWA...
  SEMINOLE...SHAWNEE...SLAUGHTERVILLE...SOUTHEASTERN NORMAN...ST.
  LOUIS...TECUMSEH...TRIBBEY...TROUSDALE...WANETTE...WASHINGTON AND
  WAYNE.

THIS INCLUDES INTERSTATE 35 BETWEEN MILE MARKERS 86 AND 107.

THIS INCLUDES INTERSTATE 40 BETWEEN MILE MARKERS 183 AND 202.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. LEAVE MOBILE HOMES AND VEHICLES. IF POSSIBLE...MOVE
TO A BASEMENT OR STORM SHELTER. OTHERWISE MOVE TO AN INTERIOR ROOM OR
HALLWAY ON THE LOWEST FLOOR. STAY AWAY FROM WINDOWS AND OUTSIDE
WALLS.

&&

LAT...LON 3491 9749 3517 9755 3547 9672 3547 9666
      3488 9649
TIME...MOT...LOC 2337Z 263DEG 50KT 3502 9737

$$



MAXWELL

2 follow-up statements

343 
WWUS54 KOUN 102345
SVSOUN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
645 PM CDT MON MAY 10 2010

OKC027-087-123-125-133-110030-
/O.CON.KOUN.TO.W.0021.000000T0000Z-100511T0030Z/
POTTAWATOMIE OK-SEMINOLE OK-CLEVELAND OK-MCCLAIN OK-PONTOTOC OK-
645 PM CDT MON MAY 10 2010

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 730 PM CDT FOR
NORTHWESTERN PONTOTOC...EASTERN MCCLAIN...SOUTHEASTERN CLEVELAND...
WESTERN SEMINOLE AND POTTAWATOMIE COUNTIES...

AT 645 PM CDT...NATIONAL WEATHER SERVICE RADAR DETECTED A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR PURCELL...MOVING
EAST AT 60 MPH.

* LOCATIONS IN THE WARNING INCLUDE ASHER...BETHEL ACRES...BOWLEGS...
  BROOKSVILLE...CENTERVIEW...EARLSBORO...ETOWAH...HARJO...JOHNSON...
  KONAWA...LAKE THUNDERBIRD...LEXINGTON...LIMA...LITTLE...MACOMB...
  MAUD...NOBLE...PINK...PURCELL...ROSEDALE...SASAKWA...SEMINOLE...
  SHAWNEE...SLAUGHTERVILLE...SOUTHEASTERN NORMAN...ST. LOUIS...
  TECUMSEH...TRIBBEY...TROUSDALE...WANETTE AND WAYNE.

THIS INCLUDES INTERSTATE 35 BETWEEN MILE MARKERS 86 AND 100.

THIS INCLUDES INTERSTATE 40 BETWEEN MILE MARKERS 184 AND 202.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO A TORNADO THREAT... THIS STORM LIKELY CONTAINS
DAMAGING HAIL TO THE SIZE OF BASEBALLS OR LARGER.

TAKE COVER NOW. LEAVE MOBILE HOMES AND VEHICLES. IF POSSIBLE...MOVE
TO A BASEMENT OR STORM SHELTER. OTHERWISE MOVE TO AN INTERIOR ROOM OR
HALLWAY ON THE LOWEST FLOOR. STAY AWAY FROM WINDOWS AND OUTSIDE
WALLS.

&&

LAT...LON 3491 9743 3521 9744 3547 9672 3547 9666
      3488 9649
TIME...MOT...LOC 2345Z 263DEG 52KT 3502 9727

$$

645 
WWUS54 KOUN 102357
SVSOUN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
657 PM CDT MON MAY 10 2010

OKC027-087-123-125-133-110030-
/O.CON.KOUN.TO.W.0021.000000T0000Z-100511T0030Z/
POTTAWATOMIE OK-SEMINOLE OK-CLEVELAND OK-MCCLAIN OK-PONTOTOC OK-
657 PM CDT MON MAY 10 2010

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 730 PM CDT FOR
NORTHWESTERN PONTOTOC...SOUTHEASTERN MCCLAIN...SOUTHEASTERN
CLEVELAND...WESTERN SEMINOLE AND POTTAWATOMIE COUNTIES...

AT 657 PM CDT...NATIONAL WEATHER SERVICE RADAR DETECTED A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 7 MILES NORTH OF
ROSEDALE...MOVING EAST AT 50 MPH.

* LOCATIONS IN THE WARNING INCLUDE ASHER...BETHEL ACRES...BOWLEGS...
  BROOKSVILLE...CENTERVIEW...EARLSBORO...ETOWAH...EXTREME EASTERN
  LAKE THUNDERBIRD...HARJO...JOHNSON...KONAWA...LIMA...LITTLE...
  MACOMB...MAUD...NORTHEASTERN NORMAN...PINK...ROSEDALE...SASAKWA...
  SEMINOLE...SHAWNEE...ST. LOUIS...TECUMSEH...TRIBBEY...TROUSDALE AND
  WANETTE.

THIS INCLUDES INTERSTATE 40 BETWEEN MILE MARKERS 184 AND 202.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO A TORNADO THREAT... THIS STORM LIKELY CONTAINS
DAMAGING HAIL TO THE SIZE OF BASEBALLS OR LARGER.

TAKE COVER NOW. LEAVE MOBILE HOMES AND VEHICLES. IF POSSIBLE...MOVE
TO A BASEMENT OR STORM SHELTER. OTHERWISE MOVE TO AN INTERIOR ROOM OR
HALLWAY ON THE LOWEST FLOOR. STAY AWAY FROM WINDOWS AND OUTSIDE
WALLS.

&&

LAT...LON 3491 9729 3529 9722 3547 9672 3547 9666
      3488 9649
TIME...MOT...LOC 2357Z 263DEG 43KT 3502 9712

$$



MAXWELL

The office that day

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

Issued	Product	Office	Counties	Lasted
May 9, 8:19 PM CDT	High Wind Watch	OUN	Alfalfa, Beckham, Blaine, Custer, Dewey, Ellis and 6 more	14 hr
May 10, 4:16 AM CDT	High Wind Warning	OUN	Beckham, Ellis, Harper, Roger Mills, Woods, Woodward	16 hr
May 10, 4:16 AM CDT	Wind Advisory	OUN	Alfalfa, Blaine, Custer, Dewey, Greer, Harmon and 5 more	16 hr
May 10, 2:11 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Major, Woods, Woodward	64 min
May 10, 2:22 PM CDT	Tornado Warning	OUN	Alfalfa, Major, Woods, Woodward	53 min
May 10, 3:13 PM CDT	Tornado Warning	OUN	Alfalfa, Grant	47 min
May 10, 3:41 PM CDT	Severe Thunderstorm Warning	OUN	Blaine, Garfield, Grant, Kingfisher, Major, Noble	64 min
May 10, 3:52 PM CDT	Tornado Warning	OUN	Grant, Kay	38 min
May 10, 4:16 PM CDT	Severe Thunderstorm Warning	OUN	Caddo, Canadian, Cleveland, Grady, Kingfisher, Logan and 2 more	59 min
May 10, 4:16 PM CDT	Tornado Warning	OUN	Garfield, Kay, Noble	44 min
May 10, 4:25 PM CDT	Tornado Warning	OUN	Kay	35 min
May 10, 4:47 PM CDT	Tornado Warning	OUN	Canadian, Cleveland, Grady, Oklahoma	58 min
May 10, 4:51 PM CDT	Severe Thunderstorm Warning	OUN	Cotton, Jefferson, Stephens	54 min
May 10, 4:57 PM CDT	Tornado Warning	OUN	Noble	33 min
May 10, 5:05 PM CDT	Severe Thunderstorm Warning	OUN	Cleveland, Grady, Lincoln, McClain, Oklahoma, Pottawatomie	55 min
May 10, 5:07 PM CDT	Severe Thunderstorm Warning	OUN	Lincoln, Logan, Noble, Payne	38 min
May 10, 5:15 PM CDT	Severe Thunderstorm Warning	OUN	Carter, Garvin, Murray, Stephens	45 min
May 10, 5:19 PM CDT	Tornado Warning	OUN	Lincoln, Logan	37 min
May 10, 5:25 PM CDT	Tornado Warning	OUN	Garvin, Grady, Stephens	20 min
May 10, 5:26 PM CDT	Tornado Warning	OUN	Cleveland, Lincoln, Oklahoma, Pottawatomie	49 min
May 10, 5:40 PM CDT	Severe Thunderstorm Warning	OUN	Jefferson, Stephens	35 min
May 10, 5:49 PM CDT	Tornado Warning	OUN	Carter, Jefferson, Stephens	26 min
May 10, 5:56 PM CDT	Tornado Warning	OUN	Carter, Jefferson, Love	49 min
May 10, 5:59 PM CDT	Severe Thunderstorm Warning	OUN	Cleveland, Garvin, McClain, Pontotoc, Pottawatomie, Seminole	46 min
May 10, 6:02 PM CDT	Severe Thunderstorm Warning	OUN	Kay	31 min
May 10, 6:04 PM CDT	Tornado Warning	OUN	Carter, Johnston, Murray	41 min
May 10, 6:04 PM CDT	Tornado Warning	OUN	Kay	27 min
May 10, 6:08 PM CDT	Tornado Warning	OUN	Hughes, Lincoln, Pottawatomie, Seminole	67 min
May 10, 6:08 PM CDT	Tornado Warning	OUN	Kay	24 min
May 10, 6:11 PM CDT	Tornado Warning	OUN	Noble	15 min
May 10, 6:12 PM CDT	Severe Thunderstorm Warning	OUN	Cleveland, Grady, McClain, Pottawatomie	48 min
May 10, 6:18 PM CDT	Severe Thunderstorm Warning	OUN	Garvin, Grady, McClain, Stephens	42 min
May 10, 6:35 PM CDT	Tornado Warning	OUN	Carter, Johnston, Marshall, Murray	40 min
May 10, 6:39 PM CDT	Tornado Warning	OUN	Carter, Love, Marshall	51 min
May 10, 6:40 PM CDT	Severe Thunderstorm Warning	OUN	Cleveland, Lincoln, Oklahoma, Pottawatomie	50 min
May 10, 6:51 PM CDT	Tornado Warning	OUN	Lincoln, Pottawatomie, Seminole	39 min

Nearby

Tornado Warnings in Oklahoma, 2010 Every tornado warning in 2010 Tornadoes in 2010

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.