NEW YORK — Mayor Adams’ administration began relocating nearly 2,000 migrants Tuesday from shelters at Floyd Bennett Field to a southern Brooklyn high school due to extreme weather forecasts. The migrants will stay overnight at James Madison High School in Midwood, according to a city official. “We are currently overseeing the relocation of 1,900 guests from the humanitarian emergency response and relief center at Floyd Bennett Field due to an updated forecast with increased wind speeds estimated to be at over 70 MPH tonight,” said Adams’ spokeswoman Kayla Mamelak. “This relocation is a proact…