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A large storm system moved through the southern and central Plains during the morning and afternoon of the May 19th. Thunderstorms, some of them severe, had developed over the Texas panhandle and moved east into northwest and north central Oklahoma during the early morning hours. Additional development, aided by the low-level jet, occurred into parts of central Oklahoma, north of a warm front that was slowly moving north to near Interstate 40. Rainfall amounts with the morning thunderstorms ranged from 0.75 to 1.50 inches. The precipitation finally ended by late morning, with the warm front continuing to slowly lift north.
By mid afternoon, the well-defined front was located from parts of west-central into central Oklahoma, just north of the Oklahoma City metro areas. Afternoon heating along and south of the boundary allowed for temperatures to rise into the upper 70s and lower 80s. Dew point temperatures also rose into the middle and upper 60s. The atmosphere was primed for thunderstorm development with up to 3000 J/kg of CAPE present and little convective inhibition remaining. Strong wind shear was in place, more than sufficient for rotating thunderstorms, and the presence of the warm front only added to the strong turning of the winds in the lower levels. A PDS Tornado Watch was issued by the Storm Prediction Center for a large part of central and western Oklahoma, as visible satellite imagery showed rapidly developing towering cumulus clouds near the warm front.
Two main thunderstorms developed near and along the front, one over Roger Mills and Dewey counties, and the other over northern Blaine County. The storms quickly took on tornadic characteristics, with the first tornado of the day occurring north of Leedey in Dewey County. Another tornado, and probably the most photographed and videoed tornado of the day, occurred just north of Hennessey. Tornadoes and large hail continued to be reported across western and central Kingfisher County, and across northern Logan, southeast Garfield, and Payne counties (see graphic below). Another thunderstorm developed further east along the dry line later in the afternoon, and the storm eventually produced a tornado west of Prague in Lincoln County. Finally, two other supercell thunderstorms developed further south along the dry line that moved into central Oklahoma. Although both showed significant rotation on radar, only the supercell that moved from Stephens through Murray counties produced tornadoes. Two tornadoes were reported, one just southeast of Wynnewood and another north of Sulphur.
Additional severe thunderstorms developed across southern Oklahoma, but the main impacts had shifted from tornadoes to large hail and very heavy rainfall. By the time it was all said and done, five main supercells had occurred over parts of western and central Oklahoma, producing at least nine tornadoes. Thankfully, widespread significant damage did not occur due to the location/short duration of the tornadoes, and only three minor injuries were reported.
| Tornado Event Number |
Date | Time (CST) |
Length of Path (miles) |
Width of Path (yards) |
F-Scale | Killed | Injured | County | Location |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 05/19/2010 | 1424-1430 | 6 | 40 | EF0 | 0 | 0 | Dewey | 4 NNW Leedey - 4.5 SSW Camargo |
| 2 | 05/19/2010 | 1541-1548 | 0.1 | 50 | EF0 | 0 | 0 | Kingfisher | 1 NW Hennessey |
| 3 | 05/19/2010 | 1608 | 0.1 | 10 | EF0 | 0 | 0 | Kingfisher | 10 E Hennessey |
| 4 | 05/19/2010 | 1624-1627 | 1.6 | 20 | EF0 | 0 | 0 | Logan | 4 SSE - 4 SE Marshall |
| 5 | 05/19/2010 | 1633-1700 | 14 | 75 | EF1 | 0 | 1 | Kingfisher | 1 W Loyal - 5 NNE Kingfisher |
| 6 | 05/19/2010 | 1703-1736 | 11 | 200 | EF1 | 0 | 0 | Payne | 15 W - 5 WNW Stillwater |
| 7 | 05/19/2010 | 1704-1705 | 0.1 | 10 | EF0 | 0 | 0 | Logan | 2 SE Orlando |
| 8 | 05/19/2010 | 1809 | 0.1 | 50 | EF0 | 0 | 0 | Creek | 2 ESE Depew |
| 9 | 05/19/2010 | 1837-1853 | 5 | 600 | EF1 | 0 | 0 | Creek | 3.5 ENE Bristow - 3.9 SSW Kellyville |
| 10 | 05/19/2010 | 1912-1917 | 1.4 | 25 | EF1 | 0 | 0 | Lincoln | 5.5 WNW - 4.1 WNW Prague |
| 11 | 05/19/2010 | 1931-1953 | 18 | 375 | EF1 | 0 | 0 | Garvin/ Murray | 7 WSW Wynnewood - Joy - 8 N Sulphur |
| 12 | 05/19/2010 | 1946-1956 | 8 | 500 | EF1 | 0 | 0 | Okfuskee | 3 SSW Micawbar - 1.3 SSE Welty |
| 13 | 05/19/2010 | 2005-2017 | 10 | 500 | EF1 | 0 | 0 | Okfuskee | 2.7 ENE Bearden - 1.4 NNE Clearview |
PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE NORMAN OK
405 PM CDT THU MAY 20 2010
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0328 PM TORNADO 4 N LEEDEY 35.93N 99.35W
05/19/2010 DEWEY OK STORM CHASER
NO DAMAGE WAS REPORTED WITH THIS TORNADO.
0342 PM HAIL 4 SSW CAMARGO 35.96N 99.32W
05/19/2010 M2.00 INCH DEWEY OK TRAINED SPOTTER
0342 PM HAIL 7 NNE LEEDEY 35.96N 99.30W
05/19/2010 E2.50 INCH DEWEY OK PUBLIC
0350 PM HAIL 3 S CAMARGO 35.97N 99.29W
05/19/2010 E1.75 INCH DEWEY OK TRAINED SPOTTER
REPORT FROM VORTEX2
0441 PM TORNADO 1 NW HENNESSEY 36.12N 97.91W
05/19/2010 KINGFISHER OK BROADCAST MEDIA
0450 PM HAIL 7 W CANTON 36.06N 98.71W
05/19/2010 E1.00 INCH DEWEY OK TRAINED SPOTTER
REPORTED BY VORTEX2. HAIL COVERING THE GROUND
0503 PM HAIL 4 N EAGLE CITY 35.99N 98.58W
05/19/2010 E3.25 INCH BLAINE OK STORM CHASER
0504 PM HAIL 2 S CANTON 36.03N 98.59W
05/19/2010 E1.25 INCH BLAINE OK PUBLIC
0508 PM TORNADO 5 SSW DOUGLAS 36.19N 97.70W
05/19/2010 GARFIELD OK EMERGENCY MNGR
0513 PM TORNADO 4 SW MARSHALL 36.11N 97.68W
05/19/2010 LOGAN OK STORM CHASER
0527 PM TORNADO 3 SE MARSHALL 36.12N 97.59W
05/19/2010 LOGAN OK STORM CHASER
LARGE CONE TORNADO BECAME RAIN WRAPPED.
0530 PM TSTM WND GST 4 SSE MARSHALL 36.10N 97.60W
05/19/2010 M61.00 MPH LOGAN OK MESONET
0539 PM TORNADO 3 E LOYAL 35.97N 98.06W
05/19/2010 KINGFISHER OK TRAINED SPOTTER
0540 PM TORNADO W LOYAL 35.97N 98.12W
05/19/2010 KINGFISHER OK NWS STORM SURVEY
AN UNANCHORED TRAILER HOME WAS DESTROYED JUST WEST OF
LOYAL. A LARGE TREE AND POWER POLE WERE SNAPPED IN LOYAL.
0553 PM TORNADO 3 WSW DOVER 35.97N 97.97W
05/19/2010 KINGFISHER OK STORM CHASER
RAIN WRAPPED CONE TORNADO.
0601 PM TORNADO 5 N KINGFISHER 35.93N 97.93W
05/19/2010 KINGFISHER OK STORM CHASER
A TRACTOR TRAILER WAS BLOWN OFF THE ROAD... INJURING THE
DRIVER. ALSO... THE DEPARTMENT OF TRANSPORTATION SALT
BARN WAS DESTROYED NEAR THIS LOCATION... AND A DOT FENCE
WAS BLOWN OVER 1 MILE SOUTHEAST OF THIS LOCATION.
0606 PM TORNADO 2 SE ORLANDO 36.13N 97.35W
05/19/2010 PAYNE OK BROADCAST MEDIA
LOCATION ESTIMATED.
0635 PM TORNADO 4 WNW STILLWATER 36.13N 97.12W
05/19/2010 PAYNE OK EMERGENCY MNGR
1 MOBILE HOME WAS DESTROYED NEAR THE INTERSECTION OF
RANGE RD AND MCELROY RD. TWO BARNS IN THE GENERAL
VICINITY WERE ALSO DESTROYED. TIME ESTIMATED FROM RADAR.
SEVERAL LARGE TREES THREE TO FOUR FEET DIAMETER WERE ALSO
BLOWN OVER.
0635 PM TSTM WND GST 4 SSE MARSHALL 36.10N 97.60W
05/19/2010 M58.00 MPH LOGAN OK MESONET
0649 PM HAIL 2 NW DUNCAN 34.52N 97.98W
05/19/2010 E1.00 INCH STEPHENS OK AMATEUR RADIO
0656 PM HAIL 4 W NORMAN 35.22N 97.51W
05/19/2010 E1.00 INCH CLEVELAND OK PUBLIC
0658 PM HAIL 1 NE DUNCAN 34.51N 97.94W
05/19/2010 E1.75 INCH STEPHENS OK AMATEUR RADIO
0700 PM HAIL 3 S BLANCHARD 35.10N 97.66W
05/19/2010 E1.75 INCH MCCLAIN OK PUBLIC
HALF DOLLAR TO GOLF BALL HAIL
0700 PM HAIL 1 NW NORMAN 35.23N 97.45W
05/19/2010 E1.00 INCH CLEVELAND OK AMATEUR RADIO
0701 PM TSTM WND GST 1 NW NORMAN 35.23N 97.45W
05/19/2010 M58.00 MPH CLEVELAND OK AMATEUR RADIO
0704 PM HAIL 2 SSW NORMAN 35.19N 97.45W
05/19/2010 E1.25 INCH CLEVELAND OK TRAINED SPOTTER
0704 PM HAIL 2 S CRESCENT 35.92N 97.59W
05/19/2010 E2.75 INCH LOGAN OK PUBLIC
0705 PM HAIL 4 N CRESCENT 36.01N 97.60W
05/19/2010 E3.50 INCH LOGAN OK EMERGENCY MNGR
THE LOGAN COUNTY EMERGENCY MANAGER REPORTED HAIL FROM
2.75 INCHES TO 3.50 INCHES... FROM 4 MILES NORTH OF
CRESCENT TO FIVE MILES SOUTH OF CRESCENT. WINDOWS WERE
BUSTED OUT OF HOMES LOCATED ON THE NORTH SIDE OF
CRESCENT... AND NUMEROUS CAR WINDOWS WERE BROKEN.
0722 PM HAIL 3 S GOLDSBY 35.10N 97.48W
05/19/2010 E2.75 INCH MCCLAIN OK STORM CHASER
0726 PM HAIL 3 S NORMAN 35.18N 97.45W
05/19/2010 E1.00 INCH CLEVELAND OK STORM CHASER
0726 PM HAIL NOBLE 35.14N 97.39W
05/19/2010 E1.75 INCH CLEVELAND OK LAW ENFORCEMENT
0728 PM HAIL 3 S NORMAN 35.18N 97.44W
05/19/2010 M1.25 INCH CLEVELAND OK NWS EMPLOYEE
AT THE NATIONAL WEATHER CENTER.
0728 PM HAIL SLAUGHTERVILLE 35.09N 97.33W
05/19/2010 E1.00 INCH CLEVELAND OK NWS EMPLOYEE
0729 PM HAIL NOBLE 35.14N 97.39W
05/19/2010 E1.75 INCH CLEVELAND OK PUBLIC
0730 PM HAIL 2 S NOBLE 35.11N 97.39W
05/19/2010 E2.75 INCH CLEVELAND OK PUBLIC
0734 PM HAIL 2 SSE NOBLE 35.11N 97.38W
05/19/2010 M3.00 INCH CLEVELAND OK AMATEUR RADIO
TIME ESTIMATED FROM RADAR.
0735 PM FLOOD STILLWATER 36.12N 97.06W
05/19/2010 PAYNE OK PUBLIC
STREET FLOODING REPORTED.
0737 PM HAIL 3 S NORMAN 35.18N 97.44W
05/19/2010 E1.75 INCH CLEVELAND OK PUBLIC
0737 PM HAIL 6 ESE NORMAN 35.19N 97.35W
05/19/2010 E1.25 INCH CLEVELAND OK NWS EMPLOYEE
0740 PM HAIL GOLDSBY 35.13N 97.47W
05/19/2010 E1.75 INCH MCCLAIN OK PUBLIC
0740 PM HAIL GOLDSBY 35.13N 97.47W
05/19/2010 E2.75 INCH MCCLAIN OK AMATEUR RADIO
MARTINDALE ESTATES
0743 PM HAIL 9 E NORMAN 35.22N 97.28W
05/19/2010 E1.25 INCH CLEVELAND OK AMATEUR RADIO
0745 PM HAIL 5 E NOBLE 35.14N 97.31W
05/19/2010 E1.00 INCH CLEVELAND OK PUBLIC
0745 PM HAIL SLAUGHTERVILLE 35.09N 97.33W
05/19/2010 E2.50 INCH CLEVELAND OK NWS EMPLOYEE
TIME ESTIMATED BY RADAR.
0747 PM HAIL 10 E NORMAN 35.22N 97.26W
05/19/2010 E1.00 INCH CLEVELAND OK AMATEUR RADIO
0750 PM HAIL 4 NE NOBLE 35.17N 97.34W
05/19/2010 E1.50 INCH CLEVELAND OK NWS EMPLOYEE
0750 PM HAIL FOSTER 34.62N 97.48W
05/19/2010 E1.00 INCH GARVIN OK AMATEUR RADIO
0800 PM HAIL FOSTER 34.62N 97.48W
05/19/2010 E1.75 INCH GARVIN OK AMATEUR RADIO
0810 PM HAIL 1 SW ELMORE CITY 34.61N 97.41W
05/19/2010 E1.50 INCH GARVIN OK PUBLIC
0810 PM HAIL 1 W ETOWAH 35.13N 97.18W
05/19/2010 E1.00 INCH CLEVELAND OK NWS EMPLOYEE
0815 PM TORNADO 5 W PRAGUE 35.49N 96.77W
05/19/2010 LINCOLN OK STORM CHASER
AN OUTBUILDING WAS DESTROYED APPROXIMATELY 5.5 MILES WEST
OF PRAGUE. ADDITIONAL DAMAGE TO A TIN BARN AND TREES WAS
REPORTED 4 MILES WEST NORTHWEST OF PRAGUE.
0831 PM TORNADO 6 NNE HENNEPIN 34.58N 97.30W
05/19/2010 GARVIN OK AMATEUR RADIO
0836 PM HAIL 1 S MACOMB 35.13N 97.01W
05/19/2010 E1.75 INCH POTTAWATOMIE OK STORM CHASER
0840 PM TORNADO 4 W WYNNEWOOD 34.64N 97.23W
05/19/2010 GARVIN OK STORM CHASER
MULTIVORTEX ON THE GROUND 7 TO 10 MINUTES WITH POWER
FLASHES AND SOME TREE DAMAGE OF UNKNOWN EXTENT.
0840 PM HAIL 4 W ST. LOUIS 35.07N 96.92W
05/19/2010 E1.75 INCH POTTAWATOMIE OK PUBLIC
0852 PM TORNADO 4 SSE WYNNEWOOD 34.59N 97.14W
05/19/2010 MURRAY OK BROADCAST MEDIA
DAMAGE TO BUILDINGS AND TREES ON EAST SIDE OF JOY. TIME
ESTIMATED BY RADAR.
0916 PM HAIL 7 WNW ROFF 34.65N 96.97W
05/19/2010 E1.75 INCH GARVIN OK TRAINED SPOTTER
0916 PM TORNADO 8 N SULPHUR 34.62N 96.98W
05/19/2010 MURRAY OK EMERGENCY MNGR
BARN ROOF BLOWN OFF. RELAYED FROM ADA/PONTOTOC EOC. TIME
ESTIMATED FROM RADAR.
0932 PM TSTM WND GST 2 W ROFF 34.63N 96.88W
05/19/2010 E70.00 MPH PONTOTOC OK AMATEUR RADIO
0937 PM HAIL ROFF 34.63N 96.84W
05/19/2010 E1.75 INCH PONTOTOC OK AMATEUR RADIO
1015 PM HAIL 9 SW ADA 34.68N 96.79W
05/19/2010 E1.75 INCH PONTOTOC OK EMERGENCY MNGR
1102 PM HAIL TUPELO 34.60N 96.42W
05/19/2010 E0.88 INCH COAL OK TRAINED SPOTTER
RELAYED BY COAL COUNTY EM.
&&
WE ARE CONTINUING TO LOOK INTO THE TORNADO INFORMATION FROM
YESTERDAY`S STORMS. WE WILL PROVIDE ADDITIONAL INFORMATION AS IT
BECOMES AVAILABLE.
$$
TJUDD
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