They're saying we may shall get some rain.

source: 
Mishoe
Entry: 
30
Example: 
They're saying we may shall get some rain.
Modal 1: 
may
Modal 2: 
shall
Gender: 
Female
Race/Ethnicity: 
White
Age: 
60s
Level of Education: 
Unknown
Home Community, Town, or State: 
Unknown
Location Collected: 
SC/ NC (Unknown)
Year: 
c1990
Relation to Addressee: 
older woman to younger woman
Medium: 
Spoken
Sentence Structure: 
1.4
Status: 
Naturalistic