Gulf of Alaska sea surface temperatures – Here
Gulf of Mexico sea surface temperatures – Here
ENSO sea surface temperatures – Here
Texas and Oklahoma panhandle tornado data – Here
Texas and Oklahoma panhandle historical tornado data – Here
Other Texas and Oklahoma panhandle tornado data courtesy the National Weather Service in Amarillo, Texas and Alan Scruggs
Texas and Oklahoma precipitation data – Here
Research covering ENSO and its effect on Southern Plains tornado season – Here
Research covering Gulf of Alaska and Gulf of Mexico sea surface temperatures effect on Southern Plains tornadoes – Here
Research covering soil moisture and its effect on southern plains tornadoes – Here
