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Cool and Dry in the East; Turning Stormy in the Northwest

Much cooler temperatures behind a cold front will bring a feeling of fall to the East Coast today. In addition, an active fall storm pattern developing in the Pacific Northwest this week will bring areas of heavy rain and high elevation snow. Northern California will benefit from rainfall this week that will aid firefighters given the recent large wildfires. Read More >

Summary

 

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.

Preliminary Tornado Damage Paths for May 19, 2010 in Central Oklahoma
 

Tornado Table

 
Tornado
Event
Number
Date Time
(CST)
Length
of Path
(miles)
Width
of Path
(yards)
F-Scale Killed Injured County Location
1 05/19/2010 0022 0.5 50 EF0 0 0 Ellis 1 S Packsaddle (17 S Arnett)
2 05/19/2010 0215 0.5 30 EF1 0 0 Ellis 4 N Fargo
3 05/19/2010 1424-1430 6 40 EF0 0 0 Dewey 4 NNW Leedey - 4.5 SSW Camargo
4 05/19/2010 1541-1548 0.1 50 EF0 0 0 Kingfisher 1 NW Hennessey
5 05/19/2010 1608 0.1 10 EF0 0 0 Kingfisher 10 E Hennessey
6 05/19/2010 1624-1627 1.6 20 EF0 0 0 Logan 4 SSE - 4 SE Marshall
7 05/19/2010 1633-1700 14 75 EF1 0 1 Kingfisher 1 W Loyal - 5 NNE Kingfisher
8 05/19/2010 1703-1736 11 200 EF1 0 0 Payne 15 W - 5 WNW Stillwater
9 05/19/2010 1704-1705 0.1 10 EF0 0 0 Logan 2 SE Orlando
10 05/19/2010 1809 0.1 50 EF0 0 0 Creek 2 ESE Depew
11 05/19/2010 1837-1853 5 600 EF1 0 0 Creek 3.5 ENE Bristow - 3.9 SSW Kellyville
12 05/19/2010 1912-1917 1.4 25 EF1 0 0 Lincoln 5.5 WNW - 4.1 WNW Prague
13 05/19/2010 1931-1953 18 375 EF1 0 0 Garvin/ Murray 7 WSW Wynnewood - Joy - 8 N Sulphur
14 05/19/2010 1946-1956 8 500 EF1 0 0 Okfuskee 3 SSW Micawbar - 1.3 SSE Welty
15 05/19/2010 2005-2017 10 500 EF1 0 0 Okfuskee 2.7 ENE Bearden - 1.4 NNE Clearview
 

Preliminary Local Storm Reports for May 19, 2010
Compiled by the Storm Prediction Center

 
 

Preliminary Local Storm Reports for May 19, 2010
Compiled by the NWS Norman Forecast Office

 
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