Using the trigram bank at bottom, each phrase can be translated into a different phrase involving a state or country. That phrase is an anagram of a location in that place along with an extra letter:
Mediterranean land endured localized mire [5 9 4 3]
SPAIN TOLERATED AREA MUD - El Puerto de Santa Maria + D
Stylish alcohol in part of Indochina [4 3 3]
LAOS HIP GIN - Phongsali + I
Bouncer interested in online pics of model Kathy [7 4 5 7]
DOORMAN WILL CLICK IRELAND - Carrickwilliamodonnell + D
Midwest betters in possession of a dump [4 5 6 8]
OHIO ELITE HAVING LANDFILL - The Village of Indian Hill + O
An empty Middle East state of confusion [1 5 4 4]
A BLANK IRAN DAZE - Bandar-e Anzali + K
Extremely befuddled puzzle close to snarling insect shall keep going throughout Torchwood's locale [6 6 7 4 2 8 3 4 4 2 3 5 5]
HIGHLY GROGGY CRYPTIC DOWN BY GROWLING FLY WILL ROLL ON ALL ALONG WALES - Llanfairpwllgwyngyllgogerychwyrndrobwllllantysiliogogogoch + I
Nice place kept by flounder foes [4 7 4 6]
FISH ENEMIES HOLD FRANCE - Niederschaeffolsheim + N
Land in the Alps had the nerve to start a garden [7 5 5]
AUSTRIA DARED PLANT - Spittal an der Drau + A
Low country searches through fowl fan [11 5 5 5]
NETHERLANDS COMBS GEESE LOVER - Gasselterboerveenschemond + L
Asian nation and its currency [5, 4]
CHINA, YUAN - Yinchuan + A
Tiny Michener book tones [3 6 4]
WEE HAWAII HUES - Waihee-Waiehu + S
See the weird South American guy [4 2 3 4 3]
LOOK AT ODD PERU MAN - Puerto Maldonado + K
Mountain state walking [4 6]
UTAH PACING - Panguitch + A
In order, the extra letters spell DID OK IN ALASKA. Subtracting a letter and anagramming gives the regional answer KODIAK ISLAND.