Tornadoes · United States · Oklahoma · 2008

EF0 tornado, Osage, Oklahoma, November 5, 2008

Name: EF0 tornado, Osage, Oklahoma, November 5, 2008
Start: 2008-11-06T02:12:00.000Z
Location: Osage, Oklahoma

This EF0 tornado ran 0.5 miles across Osage County on November 5, 2008, touching down at 8:12 PM CST and reaching 75 yards wide. It killed nobody and injured 2, and did $50,000 of property damage.

The rating scale

Tracks are drawn in the color of the rating. The Enhanced Fujita scale rates the damage rather than measuring the wind: the speeds are what that damage is taken to imply.

EF065 to 85 mphthis tornado
Light damage. Surface peeled off some roofs, gutters and siding damaged, branches broken, shallow-rooted trees pushed over.
EF186 to 110 mph
Moderate damage. Roofs badly stripped, mobile homes overturned or badly damaged, exterior doors lost, windows broken.
EF2111 to 135 mph
Considerable damage. Roofs torn off well-built houses, frame homes shifted on their foundations, mobile homes destroyed, large trees snapped or uprooted, cars lifted off the ground.
EF3136 to 165 mph
Severe damage. Whole stories of well-built houses destroyed, large buildings badly damaged, trains overturned, trees debarked, heavy cars lifted and thrown.
EF4166 to 200 mph
Devastating damage. Well-built houses leveled, structures with weak foundations moved some distance, cars thrown and large missiles generated.
EF5over 200 mph
Incredible damage. Strong frame houses swept off their foundations, car-sized missiles thrown more than 100 meters, steel-reinforced concrete badly damaged, high-rise buildings deformed.
Unrated
The survey recorded a tornado but could not put a number on it, most often because it crossed open country and damaged nothing a rating can be read from.

The record

Rating: EF0
Date: November 5, 2008
Touchdown: 8:12 PM CST (02:12 UTC)
Path length: 0.5 miles (0.8 km)
Path width: 75 yards (69 m)
Deaths: 0
Injuries: 2
Property damage: $50,000
County: Osage County
Touchdown point: 36.274, -96.388
Lift-off point: 36.274, -96.388
Record number: 0811052012-01

What the Weather Service recorded

Severe thunderstorms with large hail and damaging winds affected northeast Oklahoma from the late afternoon hours of the 5th to the early morning hours of the 6th.

A tornado destroyed a mobile home, damaged another mobile home, damaged the roof of a house, blew the roof off of a storage building, and damaged a number of trees. Maximum estimated wind based on the damage observed during a storm survey was between 75 and 85 mph. Two people in the mobile home that was destroyed were injured.

From NOAA NCEI's Storm Events Database, the narrative the local forecast office wrote for Storm Data.

The warnings

No tornado warning for this county appears in the archive as in force at the moment the tornado touched down. One was issued for the county at another hour that day.

The county was under a tornado watch, issued at 20:20 UTC and running to 06:00 UTC.

Issued (UTC)	Expired	Product	Office
20:20 UTC	06:00 UTC	Tornado Watch	TSA
21:28 UTC	22:30 UTC	Severe Thunderstorm Warning	TSA
22:03 UTC	22:30 UTC	Tornado Warning	TSA
22:26 UTC	22:50 UTC	Severe Thunderstorm Warning	TSA
22:55 UTC	00:00 UTC	Severe Thunderstorm Warning	TSA
23:54 UTC	00:35 UTC	Severe Thunderstorm Warning	TSA
01:31 UTC	02:30 UTC	Severe Thunderstorm Warning	TSA
02:15 UTC	02:50 UTC	Tornado Warning	TSA
02:36 UTC	03:30 UTC	Severe Thunderstorm Warning	TSA
02:43 UTC	03:30 UTC	Severe Thunderstorm Warning	TSA
03:10 UTC	03:40 UTC	Severe Thunderstorm Warning	TSA
03:38 UTC	05:30 UTC	Flood Advisory	TSA

Every warning and watch covering the touchdown point that day, from the Iowa Environmental Mesonet's archive of National Weather Service products. Lead time is measured from the issue of the warning in force to the touchdown time in the database, both of which were recorded to the minute by different people.

The forecast that day

The Storm Prediction Center had this point in a Slight Risk, with a 0.05 chance of a tornado within 25 miles. The outlook in force was issued at 00:59 UTC.

SPC's Day 1 convective outlook as it stood when the tornado began, read at the touchdown point. The same archive is on the radar archive.

What forecasters said that day

The local office's own words before the tornado touched down, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Tulsa, OK wrote its last area forecast discussion before the tornado touched down at Nov 5, 7:45 PM CST, 27 minutes earlier.

Area forecast discussion, Nov 5, 7:45 PM CST, 27 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TULSA OK
745 PM CST WED NOV 5 2008

.MESOSCALE UPDATE...
SURFACE-BASED CAPE OF 500 TO 1000 J/KG REMAINED IN
PLACE AT 7PM/0100 UTC SOUTH AND WEST OF A PAWNEE...
CLAREMORE...BOSWELL LINE.  WITH STRONG SHEAR IN PLACE
OVER THE AREA THE EXISTING STORMS IN THE REGION DESCRIBED
ABOVE CONTINUE TO BE SURFACE-BASED OR AT LEAST VERY
NEARLY SURFACE-BASED WITH MESOCYCLONES.  THEREFORE
THE FULL RANGE OF SEVERE WEATHER POTENTIAL CONTINUES...
BUT WITH THE EMPHASIS ON HAIL AND WIND.  THE MID-LEVEL
COOLING DOES NOT LOOK LIKE IT WILL REACH THE EAST EDGE OF
THE CAP BEFORE 11PM/0500 UTC...SO CELLS REACHING A
VINITA...MUSKOGEE...BOSWELL LINE BEFORE THEN SHOULD
RAPIDLY BECOME ELEVATED.

&&

.TSA WATCHES/WARNINGS/ADVISORIES...
OK...NONE.
AR...NONE.
&&

SHORT TERM...08

Hazardous weather outlook, Nov 5, 4:50 PM CST, 3 hours 22 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TULSA OK
450 PM CST WED NOV 5 2008

ARZ001-002-010-011-019-020-029-OKZ049-053>076-061100-
ADAIR OK-BENTON AR-CARROLL AR-CHEROKEE OK-CHOCTAW OK-CRAIG OK-
CRAWFORD AR-CREEK OK-DELAWARE OK-FRANKLIN AR-HASKELL OK-LATIMER OK-
LE FLORE OK-MADISON AR-MAYES OK-MCINTOSH OK-MUSKOGEE OK-NOWATA OK-
OKFUSKEE OK-OKMULGEE OK-OSAGE OK-OTTAWA OK-PAWNEE OK-PITTSBURG OK-
PUSHMATAHA OK-ROGERS OK-SEBASTIAN AR-SEQUOYAH OK-TULSA OK-WAGONER OK-
WASHINGTON OK-WASHINGTON AR-
450 PM CST WED NOV 5 2008

THIS OUTLOOK IS FOR NORTHWEST AND WEST CENTRAL ARKANSAS AS WELL AS
MUCH OF EASTERN OKLAHOMA.

.DAY ONE...THIS EVENING AND TONIGHT.
TORNADO.
	RISK...ELEVATED.
	AREA...EASTERN OKLAHOMA.
	ONSET...ONGOING.

	AREA AT GREATEST RISK...NORTHEAST OKLAHOMA.

SEVERE THUNDERSTORM.
	RISK...SIGNIFICANT.
	AREA...EASTERN OKLAHOMA AND NORTHWEST ARKANSAS.
	ONSET...ONGOING.

	AREA AT GREATEST RISK...NORTHEAST OKLAHOMA.

FLASH FLOOD.
	RISK...LIMITED.
	AREA...NORTHEAST OKLAHOMA AND NORTHWEST ARKANSAS.
	ONSET...AFTER 8 PM.

HEAVY RAIN.
	RISK...LIMITED.
	AREA...NORTHEAST OKLAHOMA AND NORTHWEST ARKANSAS.
	ONSET...ONGOING.

DISCUSSION...
STRONG TO SEVERE THUNDERSTORMS HAVE DEVELOPED AHEAD OF A DRY LINE
LOCATED ACROSS CENTRAL OKLAHOMA THIS EVENING. THESE STORMS WILL
CONTINUE TO AFFECT MAINLY NORTHEAST OKLAHOMA THROUGH THIS EVENING
AS THEY MOVE NORTHEAST ACROSS THE AREA. MODERATE INSTABILITY AND
STRONG WIND SHEAR WILL SUPPORT SUPERCELL THUNDERSTORM STRUCTURES
WITH THE POTENTIAL FOR TORNADOES...VERY LARGE HAIL...AND DAMAGING
STRAIGHT LINE WIND. MEANWHILE...A COLD FRONT LOCATED ACROSS
CENTRAL KANSAS AND NORTHWEST OKLAHOMA AT 5 PM WILL MOVE EAST INTO
THE AREA LATE THIS EVENING. A LINE OF STRONG TO SEVERE
THUNDERSTORMS WILL ACCOMPANY THE FRONT. DAMAGING WIND WILL BE THE
MAIN THREAT WITH THE SQUALL LINE THAT WILL MOVE THROUGH THE AREA
OVERNIGHT. HAIL UP TO GOLFBALL SIZE IS ALSO POSSIBLE AND A LOW
TORNADO POTENTIAL WILL EXIST WITH THE LINE OF THUNDERSTORMS.

SPOTTER AND EMERGENCY MANAGEMENT ACTION STATEMENT...
SPOTTER ACTIVATION WILL BE NEEDED.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.
THURSDAY...THUNDERSTORM POTENTIAL.
FRIDAY AND SATURDAY...NO HAZARDS.
SUNDAY THROUGH TUESDAY...THUNDERSTORM POTENTIAL.

EXTENDED DISCUSSION...
A LINE OF THUNDERSTORMS IS EXPECTED TO EXIT NORTHWEST ARKANSAS
EARLY THURSDAY MORNING AS DRIER AIR SPREADS ACROSS THE REGION FROM
THE WEST BEHIND THE COLD FRONT.

FAIR WEATHER WILL PREVAIL ACROSS THE AREA FRIDAY AND SATURDAY.
ANOTHER STRONG STORM SYSTEM MOVING THROUGH THE SOUTHERN PLAINS
WILL BRING A CHANCE OF THUNDERSTORMS TO THE AREA SUNDAY NIGHT
THROUGH EARLY TUESDAY.

WWW.SRH.NOAA.GOV/TULSA CONTAINS ADDITIONAL TABULAR AND GRAPHICAL
INFORMATION.

69

In the hours before

Special weather statement, Nov 5, 7:25 PM CST, 47 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
725 PM CST WED NOV 5 2008

OKZ056-057-060200-
CRAIG OK-NOWATA OK-
725 PM CST WED NOV 5 2008

...SIGNIFICANT WEATHER ALERT...

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SIGNIFICANT WEATHER ALERT EFFECTIVE UNTIL 800 PM CST
FOR THE FOLLOWING COUNTIES...

IN NORTHEAST OKLAHOMA
     NORTHERN CRAIG AND EASTERN NOWATA

AT 725 PM CST...DOPPLER RADAR INDICATED STRONG THUNDERSTORMS ALONG A
LINE EXTENDING FROM 8 MILES WEST OF HOLLOW TO 3 MILES SOUTHWEST OF
CENTRALIA TO 3 MILES NORTH OF NEW ALLUWE...MOVING NORTHEAST AT 40
MPH. SOME LOCATIONS THAT WILL BE AFFECTED BY THESE STORMS INCLUDE...
NEW ALLUWE...CENTRALIA...HOLLOW...PYRAMID CORNERS...BLUEJACKET...
CENTRAILIA AND WELCH.

THESE STORMS WILL BE CAPABLE OF PRODUCING SMALL HAIL AND WIND GUSTS
TO 50 MPH. RESIDENTS IN THESE AREAS SHOULD REMAIN ALERT IN CASE THE
SIGNIFICANT WEATHER ALERT IS UPGRADED TO A WARNING.

A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR THIS AREA.

LAT...LON 3699 9504 3679 9504 3661 9541 3660 9556
      3660 9557 3674 9547 3699 9547 3700 9544
TIME...MOT...LOC 0125Z 239DEG 35KT 3695 9537 3679 9537
          3667 9546

Special weather statement, Nov 5, 7:41 PM CST, 31 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
741 PM CST WED NOV 5 2008

OKZ060-064-066-060215-
CREEK OK-OKMULGEE OK-TULSA OK-
741 PM CST WED NOV 5 2008

...SIGNIFICANT WEATHER ALERT...

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SIGNIFICANT WEATHER ALERT EFFECTIVE UNTIL 815 PM CST
FOR THE FOLLOWING COUNTIES...

IN NORTHEAST OKLAHOMA
     NORTHWESTERN OKMULGEE...EASTERN CREEK AND TULSA

AT 741 PM CST...DOPPLER RADAR INDICATED A STRONG CLUSTER OF
THUNDERSTORMS CENTERED OVER KIEFER...MOVING NORTHEAST AT 50 MPH.
SOME LOCATIONS THAT WILL BE AFFECTED BY THIS STORM INCLUDE...TULSA
...LIBERTY...BIXBY...JENKS...GLENPOOL...BROKEN
ARROW...MOUNDS...KIEFER AND SAPULPA.

THIS CLUSTER OF STORMS MAY BE CAPABLE OF PRODUCING SMALL HAIL AND
WIND GUSTS TO 40 MPH. RESIDENTS IN THESE AREAS SHOULD REMAIN ALERT
IN CASE THE SIGNIFICANT WEATHER ALERT IS UPGRADED TO A WARNING.

A TORNADO WATCH IS IN EFFECT FOR THIS AREA UNTIL 10 PM CST.

LAT...LON 3606 9611 3625 9582 3623 9581 3622 9582
      3617 9582 3617 9580 3599 9576 3586 9596
      3578 9619
TIME...MOT...LOC 0141Z 224DEG 42KT 3597 9602

Local storm report, Nov 5, 7:52 PM CST, 20 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
752 PM CST WED NOV 05 2008

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0750 PM     HAIL             1 N HALLETT             36.25N 96.57W
11/05/2008  E1.75 INCH       PAWNEE             OK   BROADCAST MEDIA

&&

JDS

Special weather statement, Nov 5, 7:56 PM CST, 16 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
756 PM CST WED NOV 5 2008

OKZ065-060230-
OKFUSKEE OK-
756 PM CST WED NOV 5 2008

...SIGNIFICANT WEATHER ALERT...

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SIGNIFICANT WEATHER ALERT EFFECTIVE UNTIL 830 PM CST
FOR THE FOLLOWING COUNTY...

IN EAST CENTRAL OKLAHOMA
     OKFUSKEE

AT 756 PM CST...DOPPLER RADAR INDICATED A STRONG THUNDERSTORM 5 MILES
SOUTHWEST OF CASTLE...MOVING NORTHEAST AT 45 MPH. SOME LOCATIONS THAT
WILL BE AFFECTED BY THIS STORM INCLUDE...OKEMAH...BEARDEN...CASTLE...
BOLEY...MASON AND OKFUSKEE.

THIS STORM WILL BE CAPABLE OF PRODUCING SMALL HAIL AND WIND GUSTS TO
50 MPH. RESIDENTS IN THESE AREAS SHOULD REMAIN ALERT IN CASE THE
SIGNIFICANT WEATHER ALERT IS UPGRADED TO A WARNING.

LAT...LON 3565 9637 3565 9633 3559 9618 3556 9618
      3556 9610 3532 9641 3535 9644 3546 9645
      3545 9647 3542 9649 3544 9654 3542 9656
      3543 9657
TIME...MOT...LOC 0156Z 221DEG 40KT 3546 9640

Special weather statement, Nov 5, 8:05 PM CST, 7 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
805 PM CST WED NOV 5 2008

OKZ060-061-060230-
ROGERS OK-TULSA OK-
805 PM CST WED NOV 5 2008

...SIGNIFICANT WEATHER ALERT...

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SIGNIFICANT WEATHER ALERT EFFECTIVE UNTIL 830 PM CST
FOR THE FOLLOWING COUNTIES...

IN NORTHEAST OKLAHOMA
     WESTERN ROGERS AND TULSA

AT 805 PM CST...DOPPLER RADAR INDICATED STRONG THUNDERSTORMS OVER
TULSA...MOVING NORTHEAST AT 50 MPH. SOME LOCATIONS THAT WILL BE
AFFECTED BY THESE STORMS INCLUDE...TULSA...CATOOSA...OWASSO AND
COLLINSVILLE.

THESE STORMS WILL BE CAPABLE OF PRODUCING SMALL HAIL AND WIND GUSTS
TO 50 MPH. RESIDENTS IN THESE AREAS SHOULD REMAIN ALERT IN CASE THE
SIGNIFICANT WEATHER ALERT IS UPGRADED TO A WARNING.

A TORNADO WATCH IS IN EFFECT UNTIL 10 PM CST.

LAT...LON 3640 9556 3606 9585 3606 9603 3608 9603
      3643 9589
TIME...MOT...LOC 0205Z 214DEG 47KT 3614 9595 3614 9584

Local storm report, Nov 5, 8:07 PM CST, 5 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
807 PM CST WED NOV 05 2008

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0804 PM     HAIL             5 W CLEVELAND           36.31N 96.55W
11/05/2008  E1.00 INCH       OSAGE              OK   TRAINED SPOTTER

&&

JDS

The air that afternoon

The radiosonde launches on either side of the tornado, from the nearest station that was launching then, drawn and analyzed the way Storm Lab does: the same diagram, the same parcel and shear definitions SPC's mesoanalysis uses.

Lamont, OK (KLMN), 00:00Z

2.2 hours before the tornado, 105 km from the path. November 6, 2008.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed. The warm shading is its CAPE, the cool shading the inhibition it has to break through.

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. RM and LM are the right and left moving storms Bunkers' method gives; the shaded area is the 0 to 1 km storm-relative helicity.

Mixed-layer CAPE: 1022 J/kg
Mixed-layer CIN: -34 J/kg
Surface CAPE: 978 J/kg
Mixed-layer LCL: 1347 m above ground
0-6 km bulk shear: 62 kt
0-1 km bulk shear: 12 kt
0-1 km storm-relative helicity: -61 m²/s²
0-3 km storm-relative helicity: -80 m²/s²
Significant tornado parameter: -0.4
Supercell composite: -2.1
0-3 km lapse rate: 8.0 K/km

Open this sounding in Storm Lab

Lamont, OK (KLMN), 12:00Z

9.8 hours after it, 105 km from the path. November 6, 2008.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed. The warm shading is its CAPE, the cool shading the inhibition it has to break through.

Hodograph

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: -1266 J/kg
Surface CAPE: 0 J/kg
Mixed-layer LCL: 1638 m above ground
0-6 km bulk shear: 69 kt
0-1 km bulk shear: 18 kt
0-1 km storm-relative helicity: -138 m²/s²
0-3 km storm-relative helicity: -107 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0
0-3 km lapse rate: 5.1 K/km

Open this sounding in Storm Lab

The surface observations

Tulsa/Lloyd Jones (RVS), 45 km from the path, in the two hours either side.

Time (UTC)	Temp (°F)	Dew point (°F)	Wind	Gust (kt)	Pressure (mb)	Weather
00:53 UTC	72	59	170° 8 kt		1004.4
01:13 UTC	71.6	59	190° 8 kt		1004.4	VCTS
01:25 UTC	71.6	60.8	180° 9 kt	16	1003.7	VCTS -RA
01:53 UTC	68	62	170° 11 kt		1003.4	+TSRA
01:57 UTC	66.2	62.6	170° 13 kt		1003.4	+TSRA
02:05 UTC	66.2	62.6	220° 10 kt		1003.4	-TSRA
02:13 UTC	69.8	60.8	150° 11 kt		1002.7	-TSRA
02:21 UTC	69.8	60.8	170° 10 kt		1002.4
02:53 UTC	71	60	180° 11 kt		1002.4
03:27 UTC	71.6	60.8	170° 16 kt	21	1001.7	VCTS
03:40 UTC	71.6	60.8	170° 9 kt	21	1002	VCTS
03:53 UTC	73	60	190° 10 kt	18	1001.7	VCTS

From the Iowa Environmental Mesonet's archive of airport observations.

The radar

The Tulsa radar (KINX), 75 km away, was scanning. The volume nearest the touchdown began at 02:13 UTC.

Open the radar archive at this moment, over the track

Reflectivity and velocity, decoded from the Level II archive in the browser. Volumes take a few seconds to open the first time.

What was reported nearby

Local storm reports within 60 km of the path, in the three hours either side.

Time (UTC)	Report	Where	County	Remark
23:20 UTC	TSTM WND GST 60	Oilton	Creek, OK	BLOWING DEBRIS/ITEMS ACROSS PARKING LOT
23:20 UTC	HAIL 0.75	Jennings	Pawnee, OK
23:20 UTC	HAIL 1	Oilton	Creek, OK
23:26 UTC	HAIL 1	Yale	Payne, OK
23:30 UTC	HAIL 0.75	Hallett	Pawnee, OK
23:41 UTC	HAIL 1	2 Wsw Westport	Pawnee, OK	ALSO DIME AND NICKEL HAIL OBSERVED
00:24 UTC	HAIL 1	Avant	Osage, OK
00:26 UTC	TSTM WND GST 60	3 Wsw Vera	Tulsa, OK
00:26 UTC	HAIL 1	3 Wsw Vera	Tulsa, OK
00:27 UTC	HAIL 1.75	2 Wsw Vera	Washington, OK
01:50 UTC	HAIL 1.75	1 N Hallett	Pawnee, OK
02:04 UTC	HAIL 1	5 W Cleveland	Osage, OK
02:12 UTC	TORNADO	2 Se Osage	Osage, OK	* 2 INJ * A SHORT-LIVED, WEAK TORNADO ROLLED ONE MOBILE HOME...DAMAGED ANOTHER MOBILE HOME...DAMAGED THE ROOF OF A HOUSE...DAMAGED THE ROOF OF A STORAGE BUILDING AND CAUSED TREE DAMAGE. THE TORNADO WAS ON THE GROUND
02:46 UTC	HAIL 0.88	5 N Skiatook	Washington, OK	ON HWY 11
03:28 UTC	HAIL 0.75	6 Sw Sperry	Osage, OK	40 TO 50 MPH WINDS
03:41 UTC	TSTM WND GST 60	5 W Collinsville	Tulsa, OK
03:42 UTC	TSTM WND GST 60	Skiatook	Tulsa, OK
03:42 UTC	HAIL 0.75	Skiatook	Tulsa, OK
03:45 UTC	HAIL 0.75	1 Ne Collinsville	Tulsa, OK
04:18 UTC	HAIL 0.75	Kiefer	Creek, OK
04:22 UTC	TSTM WND GST 60	3 Se Mounds	Okmulgee, OK
04:22 UTC	HAIL 0.75	3 Se Mounds	Okmulgee, OK
04:39 UTC	HAIL 0.88	1 Ne Broken Arrow	Tulsa, OK	PEA TO NICKEL HAIL

From the Iowa Environmental Mesonet's archive of National Weather Service local storm reports.

This ground now

The live radar over the track Every 2008 tornado in Oklahoma Every tornado in Oklahoma since 1950 Warnings in force in Oklahoma now The forecast where you are

What this means

Ratings are the survey's, read off the damage rather than measured; the rating scale is above. Tornado counts rise through the record as reporting improved, so a year in the 1950s is not comparable with one today except for the strongest tornadoes, which were always noticed.

Sources

NOAA Storm Prediction Center tornado database, 1950-2025, the official record kept by NOAA's Storm Prediction Center.