The link between low pressure changes or just pressure changes in general has never been proven. Most non headache suffering health care providers state it does not exist. Most of us who experience CH or migraines know that it does. Predicting frequency and intensity knowing the pressure is going to rapidly change is not really reproducible. In the end I don't think changing locales will help that much because you might eliminate a trigger but the condition still exists and hits will occur. When I researched this myself the migraine community had a list of "best places" to live
20 Major U.S. Cities with the Least Barometric Variation (days per year of >= .20 changes)
Honolulu (0 days per year) Miami (4) San Diego (7) Los Angeles (7) Tampa (11) San Jose (14) Sacramento (18) San Francisco (18) Phoenix (22) New Orleans (22) Jacksonville (22) Birmingham (29) Houston (29) Atlanta (37) San Antonio (37) Austin (37) Memphis (44) Las Vegas (47) Little Rock (48) Charleston, SC (48)
Not surprisingly, it is the southern cities which have the fewest days of variation. The “worst†list reinforces this theme:
20 U.S. Cities with the Most Barometric Variation (days per year of >= .20 changes)
Augusta, Maine (128 days per year) Rapid City, SD (127) Montpelier, VT (117) Bismarck, ND (117) Boston (116) Colorado Springs (113) Denver (110) Billings, MT (109) Providence (109) New Haven (105) Cheyenne (105) Anchorage (104) Detroit (102) New York City (99) Buffalo (98) Minneapolis (98) Omaha (94) Chicago (91) Philadelphia (90) Baltimore (87)
At the U.S. State Level, here is the complete list:
Hawaii (0) Florida (14) California (18) Alabama (27) Louisiana (27) Mississippi (28) Arizona (33) Georgia (35) Texas (45) Tennessee (46) Arkansas (46) South Carolina (48) Nevada (59) North Carolina (60) Oregon (61) Kentucky (62) Missouri (68) New Mexico (72) West Virginia (73) Oklahoma (73) Washington (75) Illinois (78) Virginia (78) Indiana (80) Utah (81) Ohio (82) Kansas (84) Maryland (85) Iowa (85) Idaho (86) Pennsylvania (89) Delaware (89) Wisconsin (92) New Jersey (96) Colorado (99) Michigan (101) Minnesota (101) Alaska (101) New York (102) Nebraska (103) Connecticut (106) Rhode Island (107) Wyoming (107) Montana (108) Massachusetts (111) Vermont (112) New Hampshire (115) South Dakota (119) North Dakota (120) Maine (127)
Source:https://www.securevideo.com/blog/2013/10/07/avoiding-migraines-resulting-from-changes-in-barometric-pressure/