NEW : Iowa governor declares state of emergency to protect residents . Atlantic , Iowa , breaks record low set in 1958 with minus 1 degree temperature . Homeless woman found frozen to death in Kansas City , Missouri . Ice storm warnings north , hard freeze warnings south .
NEW : Florida governor declares state of emergency to protect crops . Atlantic , Iowa , breaks record low set in 1958 with minus 29 degree temperature . Homeless man found frozen to death in Kansas City , Missouri . Winter storm warnings north , hard freeze warnings south .