The search function is your friend VT:
WI: Tunguska Event called Moscow Event:
https://www.alternatehistory.com/discussion/showthread.php?t=200647
Tunguska Event Hits Paris?:
https://www.alternatehistory.com/discussion/showthread.php?t=210015
London Event 1908, meteor fall and burn capital of UK, instead of Tunguska (Russia):
https://www.alternatehistory.com/discussion/showthread.php?t=167865
What is at various points around the earth at the 61st parallel north?
Starting at the Prime Meridian and heading eastwards, the parallel 61° north passes through:
Co-ordinates Country, territory or sea Notes
61°0′N 0°0′E Atlantic Ocean Defines the border between North Sea and Norwegian Sea
61°0′N 4°40′E Norway Islands of Ytre Sula and Hiserøyna, and the mainland
61°0′N 12°14′E Sweden
61°0′N 17°13′E Baltic Sea Gulf of Bothnia
61°0′N 21°17′E Finland
61°0′N 28°41′E Russia Passing through Lake Ladoga, Lake Onega and by the approximate hypocentre of the 1908 Tunguska event
61°0′N 156°5′E Sea of Okhotsk Gizhigin Bay
61°0′N 159°53′E Russia
61°0′N 161°10′E Sea of Okhotsk Penzhin Bay
61°0′N 163°30′E Russia Kamchatka Peninsula
61°0′N 172°11′E Bering Sea
61°0′N 165°10′W United States Alaska
61°0′N 151°30′W Cook Inlet
61°0′N 150°31′W United States Alaska - Kenai Peninsula
61°0′N 150°19′W Cook Inlet Turnagain Arm
61°0′N 149°39′W United States Alaska
61°0′N 141°0′W Canada Yukon and Northwest Territories - passing through the Great Slave Lake Nunavut
61°0′N 94°10′W Hudson Bay
61°0′N 77°59′W Canada Quebec - Ungava Peninsula Nunavut - Diana Island
61°0′N 69°55′W Diana Bay
61°0′N 69°40′W Canada Quebec - Ungava Peninsula
61°0′N 69°28′W Hudson Strait
61°0′N 64°43′W Davis Strait
61°0′N 48°24′W Greenland
61°0′N 42°41′W Atlantic Ocean Passing just north of Out Stack, Muckle Flugga and Unst, Shetland Islands, Scotland, United Kingdom
From - http://en.wikipedia.org/wiki/61st_parallel_north