Storm Events Database

Event Details

Event Hail
Magnitude 1.00 in.
State OKLAHOMA
County/Area MCCLAIN
WFO OUN
Report Source Public
NCDC Data Source CSV
Begin Date 2012-04-13 14:41:00.0 CST-6
Begin Location 0N NEWCASTLE
Begin Lat/Lon 35.25/-97.6
End Date 2012-04-13 14:41:00.0 CST-6
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 event began during the early afternoon hours of Friday, April 13, 2012, and lasted through the early morning hours of Saturday, April 14, 2012. Around a dozen tornadoes, as well as large hail, and strong wind gusts were produced by the numerous thunderstorms that occurred during this event. Much of the severe weather occurred in parts of southwestern and central Oklahoma. However, thunderstorms did develop in other portions of Oklahoma as well during the event.
A moist airmass had been in place over much of the region for several days prior to April 13th, and several rounds of showers and thunderstorms had occurred during this period. On Friday, April 13th, a dryline and weak frontal boundary moved into the area extending from near southwestern and west central Oklahoma then northeast into north central Oklahoma by the early afternoon hours. The first storms developed in parts of southwestern Oklahoma and west Texas. However, it was several hours before the first tornado occurred. In fact, the potential for tornadoes increased during the early evening hours of April 13th as the low level jet (strong winds just above the surface) became stronger.
The first tornadic activity of the day occurred in central Oklahoma as a tornado touched down just southwest of Norman at 3:59 pm CDT, and then moved east-northeast through the heart of that city shortly after 4:00 pm CDT. This tornado was eventually rated an EF-1 as it damaged many businesses and homes, and numerous trees and power lines were also downed. No fatalities were reported with this rush hour tornado, but 20 injuries were reported. The same parent supercell thunderstorm that produced the Norman tornado also spawned a brief, weak tornado in Pottawatomie County 6 miles northwest of Shawnee, OK.
Meanwhile, supercell thunderstorms continued to develop in southwestern Oklahoma. Nine tornadoes occurred in this area with 3, and possibly 4 tornadoes occurring at one time with a storm near Cooperton, OK in Kiowa County during the evening of April 13th. Two tornadoes were also reported near Blair, OK in Jackson County, and 3 tornadoes were observed near Carnegie, OK in Caddo County. Large hail and strong wind gusts was also reported with these severe thunderstorms. The largest hail reported was 3 inches in diameter and fell in an area 12 miles south of Sayre, OK. Several wind gusts to 70 mph were also reported.
Approximately 12 tornadoes occurred during this severe weather event. Fortunately, no fatalities or major injuries were reported with these tornadoes.
Event Narrative


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All events for this episode:

Location County/Zone St. Date Time T.Z. Type Mag Dth Inj PrD CrD
Totals: 0 0 0.00K 0.00K
CYRIL CADDO CO. OK 04/13/2012 12:55 CST-6 Hail 0.75 in. 0 0 0.00K 0.00K
ANADARKO CADDO CO. OK 04/13/2012 13:04 CST-6 Hail 0.75 in. 0 0 0.00K 0.00K
ANADARKO CADDO CO. OK 04/13/2012 13:15 CST-6 Hail 1.00 in. 0 0 0.00K 0.00K
MARTHA JACKSON CO. OK 04/13/2012 13:16 CST-6 Hail 1.75 in. 0 0 0.00K 0.00K
ANADARKO CADDO CO. OK 04/13/2012 13:22 CST-6 Hail 0.75 in. 0 0 0.00K 0.00K
ROOSEVELT KIOWA CO. OK 04/13/2012 13:22 CST-6 Hail 0.88 in. 0 0 0.00K 0.00K
BLAIR JACKSON CO. OK 04/13/2012 13:26 CST-6 Hail 1.00 in. 0 0 0.00K 0.00K
ROOSEVELT KIOWA CO. OK 04/13/2012 13:49 CST-6 Hail 1.50 in. 0 0 0.00K 0.00K
LAWTON COMANCHE CO. OK 04/13/2012 13:50 CST-6 Hail 1.00 in. 0 0 0.00K 0.00K
LAWTON COMANCHE CO. OK 04/13/2012 14:00 CST-6 Hail 1.00 in. 0 0 0.00K 0.00K
AMBER GRADY CO. OK 04/13/2012 14:15 CST-6 Hail 1.25 in. 0 0 0.00K 0.00K
ROOSEVELT KIOWA CO. OK 04/13/2012 14:22 CST-6 Hail 1.00 in. 0 0 0.00K 0.00K
FT COBB CADDO CO. OK 04/13/2012 14:25 CST-6 Hail 1.75 in. 0 0 0.00K 0.00K
NEWCASTLE MCCLAIN CO. OK 04/13/2012 14:41 CST-6 Hail 1.00 in. 0 0 0.00K 0.00K
MEERS COMANCHE CO. OK 04/13/2012 14:42 CST-6 Hail 1.75 in. 0 0 0.00K 0.00K
COOPERTON KIOWA CO. OK 04/13/2012 14:44 CST-6 Hail 1.00 in. 0 0 0.00K 0.00K
NORMAN CLEVELAND CO. OK 04/13/2012 14:55 CST-6 Hail 1.00 in. 0 0 0.00K 0.00K
GOLDSBY MCCLAIN CO. OK 04/13/2012 14:59 CST-6 Tornado EF0 0 0 0.00K 0.00K
NORMAN CLEVELAND CO. OK 04/13/2012 15:00 CST-6 Tornado EF1 0 0 0.00K 0.00K
NORMAN CLEVELAND CO. OK 04/13/2012 15:05 CST-6 Hail 1.75 in. 0 0 0.00K 0.00K
APACHE CADDO CO. OK 04/13/2012 15:06 CST-6 Hail 2.50 in. 0 0 0.00K 0.00K
LONE WOLF KIOWA CO. OK 04/13/2012 15:28 CST-6 Hail 1.00 in. 0 0 0.00K 0.00K
CHOCTAW OKLAHOMA CO. OK 04/13/2012 15:30 CST-6 Hail 1.50 in. 0 0 0.00K 0.00K
NORMAN CLEVELAND CO. OK 04/13/2012 15:30 CST-6 Hail 1.75 in. 0 0 0.00K 0.00K
CHOCTAW OKLAHOMA CO. OK 04/13/2012 15:42 CST-6 Hail 1.50 in. 0 0 0.00K 0.00K
CHICKASHA ARPT GRADY CO. OK 04/13/2012 15:53 CST-6 Hail 0.88 in. 0 0 0.00K 0.00K
BLAIR JACKSON CO. OK 04/13/2012 16:05 CST-6 Hail 1.75 in. 0 0 0.00K 0.00K
HOLLIS HARMON CO. OK 04/13/2012 16:15 CST-6 Hail 2.50 in. 0 0 0.00K 0.00K
GRANITE GREER CO. OK 04/13/2012 16:18 CST-6 Hail 1.00 in. 0 0 0.00K 0.00K
DALE POTTAWATOMIE CO. OK 04/13/2012 16:24 CST-6 Tornado EF0 0 0 0.00K 0.00K
HOLLIS HARMON CO. OK 04/13/2012 16:29 CST-6 Hail 1.75 in. 0 0 0.00K 0.00K
MANGUM GREER CO. OK 04/13/2012 16:37 CST-6 Hail 1.75 in. 0 0 0.00K 0.00K
BLAIR JACKSON CO. OK 04/13/2012 17:10 CST-6 Tornado EF0 0 0 0.00K 0.00K
BLAIR JACKSON CO. OK 04/13/2012 17:14 CST-6 Tornado EF0 0 0 0.00K 0.00K
BLAIR JACKSON CO. OK 04/13/2012 17:16 CST-6 Hail 1.75 in. 0 0 0.00K 0.00K
BLAIR JACKSON CO. OK 04/13/2012 17:21 CST-6 Thunderstorm Wind 61 kts. EG 0 0 0.00K 0.00K
BLAIR JACKSON CO. OK 04/13/2012 17:22 CST-6 Hail 1.75 in. 0 0 0.00K 0.00K
(LTS)ALTUS AFB JACKSON CO. OK 04/13/2012 17:30 CST-6 Thunderstorm Wind 61 kts. MG 0 0 0.00K 0.00K
BLAIR JACKSON CO. OK 04/13/2012 17:30 CST-6 Tornado EF0 0 0 0.00K 0.00K
BLAIR JACKSON CO. OK 04/13/2012 17:33 CST-6 Thunderstorm Wind 61 kts. MG 0 0 0.00K 0.00K
ROOSEVELT KIOWA CO. OK 04/13/2012 17:55 CST-6 Hail 1.75 in. 0 0 0.00K 0.00K
ROOSEVELT KIOWA CO. OK 04/13/2012 18:13 CST-6 Hail 2.50 in. 0 0 0.00K 0.00K
COOPERTON KIOWA CO. OK 04/13/2012 18:25 CST-6 Tornado EF0 0 0 0.00K 0.00K
COOPERTON KIOWA CO. OK 04/13/2012 18:27 CST-6 Tornado EF0 0 0 0.00K 0.00K
COOPERTON KIOWA CO. OK 04/13/2012 18:28 CST-6 Tornado EF1 0 0 0.00K 0.00K
COOPERTON KIOWA CO. OK 04/13/2012 18:35 CST-6 Thunderstorm Wind 61 kts. EG 0 0 0.00K 0.00K
LONE WOLF KIOWA CO. OK 04/13/2012 18:48 CST-6 Hail 1.00 in. 0 0 0.00K 0.00K
COOPERTON KIOWA CO. OK 04/13/2012 18:52 CST-6 Tornado EF0 0 0 0.00K 0.00K
CARNEGIE CADDO CO. OK 04/13/2012 19:36 CST-6 Tornado EF0 0 0 0.00K 0.00K
CARNEGIE CADDO CO. OK 04/13/2012 19:42 CST-6 Tornado EF0 0 0 0.00K 0.00K
CARNEGIE CADDO CO. OK 04/13/2012 19:50 CST-6 Tornado EF0 0 0 0.00K 0.00K
DELHI BECKHAM CO. OK 04/13/2012 20:40 CST-6 Hail 3.00 in. 0 0 0.00K 0.00K
CARTER BECKHAM CO. OK 04/13/2012 20:53 CST-6 Hail 2.75 in. 0 0 0.00K 0.00K
ANADARKO CADDO CO. OK 04/13/2012 21:08 CST-6 Hail 1.00 in. 0 0 0.00K 0.00K
ANADARKO CADDO CO. OK 04/13/2012 21:16 CST-6 Hail 1.00 in. 0 0 0.00K 0.00K
ANADARKO CADDO CO. OK 04/13/2012 21:28 CST-6 Hail 2.50 in. 0 0 0.00K 0.00K
ROCKY WASHITA CO. OK 04/13/2012 21:39 CST-6 Hail 2.50 in. 0 0 0.00K 0.00K
CHICKASHA ARPT GRADY CO. OK 04/13/2012 21:45 CST-6 Hail 1.00 in. 0 0 0.00K 0.00K
CLOUD CHIEF WASHITA CO. OK 04/13/2012 22:22 CST-6 Hail 1.75 in. 0 0 0.00K 0.00K
STAFFORD CUSTER CO. OK 04/13/2012 22:22 CST-6 Hail 1.75 in. 0 0 0.00K 0.00K
EAKLY CADDO CO. OK 04/13/2012 22:48 CST-6 Hail 2.50 in. 0 0 0.00K 0.00K
EAKLY CADDO CO. OK 04/13/2012 22:48 CST-6 Thunderstorm Wind 60 kts. MG 0 0 0.00K 0.00K
WEATHERFORD CUSTER CO. OK 04/13/2012 23:10 CST-6 Hail 2.00 in. 0 0 0.00K 0.00K
WEATHERFORD CUSTER CO. OK 04/13/2012 23:10 CST-6 Thunderstorm Wind 61 kts. MG 0 0 0.00K 0.00K
HINTON CADDO CO. OK 04/13/2012 23:42 CST-6 Hail 1.25 in. 0 0 0.00K 0.00K
MUSTANG CANADIAN CO. OK 04/13/2012 23:52 CST-6 Tornado EF1 0 0 0.00K 0.00K
Totals: 0 0 0.00K 0.00K