Storm Events Database

Event Details

Event Tornado
-- Scale EF0
-- Length 0.82 Miles
-- Width 25 Yards
State OKLAHOMA
County/Area BEAVER
WFO AMA
Begin Date 05/28/2013 14:08:00 CST-6
Begin Range 9
Begin Azimuth NNW
Begin Location CLEAR LAKE
Begin Lat/Lon 36.8/-100.33
End Date 05/28/2013 14:11:00 CST-6
End Range 9
End Azimuth WSW
End Location KNOWLES
End Lat/Lon 36.81/-100.32
Deaths Direct/Indirect 0/0 (fatality details below, when available...)
Injuries Direct/Indirect 0/0
Property Damage 0.00K
Crop Damage 0.00K
Episode Narrative A severe weather outbreak brought hail, damaging winds, and tornadoes to portions of the Oklahoma Panhandle from the afternoon of the 28th into the early morning hours of the 29th. The morning upper air analysis on the 28th showed a mid-level shortwave trough rotating around the base of a longwave trough situated from Idaho to Arizona. At the surface, a dryline was situated from the northeastern Oklahoma Panhandle to the southwestern Texas Panhandle. The 6 AM CST upper air sounding from Amarillo showed a low level capping inversion with significant elevated instability. Also deep layer shear was primed for the development of discrete supercells. By noon, the northern portion of the dryline had moved into south central Kansas before stretching back into the southwestern Texas Panhandle, as instability values increased across the area. At this time, the combination of a residual cold frontal boundary and the dryline helped to form two landspout tornadoes as thunderstorms developed along the dryline across Beaver County. These tornadoes formed over undeveloped land and produced little damage.

During the late evening the dryline began to retreat westward as the nocturnal low level jet transported moisture from the Gulf of Mexico northwestward. This allowed the remnants of a supercell that brought severe weather to the Texas Panhandle to move into Beaver County. These storms produced isolated downbursts while decaying over the county.
Event Narrative A landspout tornado formed during the afternoon hours of the 28th. Eye-witness accounts described the landspout as a brief spin-up that started from the ground and connected with the base of a developing thunderstorm. Several pictures were taken by the eye-witnesses from U.S. Highway 83 approximately 4 miles south of Beaver (Beaver County). A National Weather Service survey team, using the eye-witness accounts, located the track of this landspout. Very little damage was evident given the landspout formed over grasslands and away from developed real estate. The max estimated wind speed was 60 mph. No injuries or fatalities were associated with this landspout tornado.


All events for this episode:

Location County/Zone St. Date Time T.Z. Type Mag Dth Inj PrD CrD
Totals: 0 0 800.00K 0.00K
CLEAR LAKE BEAVER CO. OK 05/28/2013 14:08 CST-6 Tornado EF0 0 0 0.00K 0.00K
FORGAN BEAVER CO. OK 05/28/2013 14:29 CST-6 Tornado EF0 0 0 0.00K 0.00K
FORGAN BEAVER CO. OK 05/28/2013 15:08 CST-6 Hail 1.50 in. 0 0 0.00K 0.00K
FLORIS BEAVER CO. OK 05/28/2013 15:43 CST-6 Hail 1.00 in. 0 0 0.00K 0.00K
ELMWOOD BEAVER CO. OK 05/28/2013 17:58 CST-6 Thunderstorm Wind 56 kts. EG 0 0 800.00K 0.00K
BEAVER BEAVER CO. OK 05/28/2013 18:10 CST-6 Thunderstorm Wind 51 kts. MG 0 0 0.00K 0.00K
BEAVER BEAVER CO. OK 05/28/2013 18:21 CST-6 Thunderstorm Wind 59 kts. MG 0 0 0.00K 0.00K
Totals: 0 0 800.00K 0.00K