Question: In which month of 1964 was Middleton Island raised 12 ft above sea level?

Context articles: Middleton Island
Gulf Coastal Lowlands
Lake Whittlesey
Māhukona
Alocasia robusta
Sebago Lake
1964 Alaska earthquake
Elliott Key
Tidal flooding
Base level

Middleton Island is a small, uninhabited island in the U.S. state of Alaska, located in the Pacific Ocean approximately 80 mi southwest of Cordova.
 The island was briefly home to Middleton Island Air Force Station, an early warning radar station, from 1958 until the station's closure in 1963.
 During the 1964 Alaska earthquake the island was raised an additional 12 ft above sea level.
 The island now hosts the unattended Middleton Island Airport and a NEXRAD weather radar.
The Gulf Coastal Lowlands is a geomorphological province in Florida.
 The province extends along the coast of the Gulf of Mexico from the western end of the Florida Panhandle to near Ft. Myers in southern Florida.
 The average width of the province is 40 km.
 While much of the province is less than 15 m above mean sea level (msl), it rises to about 100 ft above msl along its inland side.
 It is the largest geomorphological province in Florida.
 Due to its low elevation, the province was at sea level during warmer periods of the Pliocene and Pleistocene, and features such as ancient dunes and sand bars are found far inland.
 Marine terraces found in the Gulf Coastal Lowlands include the Silver Bluff [1 ft to 10 ft above mean sea level (msl)], Pamlico [8 ft to 25 ft above msl], Talbot [25 ft to 42 ft above msl], Penholoway [42 ft to 72 ft above msl] and Wicomico [70 ft to 100 ft above msl] terraces.
Lake Whittlesey was a proglacial lake that was an ancestor of present-day Lake Erie.
 It formed about 14,000 years ago.
 As the Erie Lobe of the Wisconsin Glacier retreated at the end of the last ice age, it left melt-water in a previously-existing depression area that was the valley of an eastward-flowing river known as the Erigan River that probably emptied into the Atlantic Ocean following the route of today's Saint Lawrence River.
 The lake stood at 735 ft to 740 ft above sea level.
 The remanent beach is not horizontal as there is a ‘hinge line’ southwest of a line from Ashtabula, Ohio, through the middle part of Lake St. Clair.
 The hinge line is where the horizontal beaches of the lake have been warped upwards towards the north by the isostatic rebound as the weight of the ice sheet was removed from the land.
 The rise is 60 ft north into Michigan and the Ubly outlet.
 The current altitude of the outlet is 800 ft above sea level.
 Where the outlet entered the Second Lake Saginaw at Cass City the elevation is 740 ft above sea level.
Māhukona is a submerged shield volcano on the northwestern flank of the Island of Hawaiʻ i.
 A drowned coral reef at about 3,770 feet (-1,150 m) below sea level and a major break in slope at about 4,400 feet (-1,340 m) below sea level represent old shorelines.
 The summit of the shield volcano was once 800 feet (250 m) above sea level.
 It has now subsided below sea level.
 A roughly circular caldera marks the summit of Māhukona.
 A prominent rift zone extends to the west.
 A second rift zone probably extended to the east but has been buried by younger volcanoes.
 The main shield-building stage of volcanism ended about 470,000 years ago.
 The summit of the shield volcano subsided below sea level between 435,000 and 365,000 years ago.
Alocasia robusta is a gigantic herb of the aroid family (Araceae) which is endemic to the island of Borneo.
 The plant is a rosette herb consisting of several leaves with a sagitate (arrowhead shaped) lamina or blade up to 12 ft long by 8 ft wide, borne on very stout petioles or stalks up to 12 ft in length.
 This species was unknown to science prior to 1967.
 The plant is usually trunkless.
Sebago Lake is the deepest and second largest lake in the U.S. state of Maine.
 The lake is 316 ft deep at its deepest point, with a mean depth of 101 ft , covers about 45 sqmi in surface area, has a length of 12 mi and a shoreline length of 105 mi .
 The surface is around 270 ft above sea level, so the deep bottom is below the present sea level.
 It is located in Cumberland County, Maine, and bordered by the towns of Casco, Naples, Raymond, Sebago, Standish and Windham.
 The seasonally occupied town of Frye Island is on an island in the lake.
The 1964 Alaskan earthquake, also known as the Great Alaskan earthquake and Good Friday earthquake, occurred at 5:36 PM AST on Good Friday, March 27.
 Across south-central Alaska, ground fissures, collapsing structures, and tsunamis resulting from the earthquake caused about 139 deaths.
Elliott Key is the northernmost of the true Florida Keys (those 'keys' which are ancient coral reefs lifted above the present sea level), and the largest key north of Key Largo.
 It is located entirely within Biscayne National Park, in Miami-Dade County, Florida, east of Homestead, Florida.
 It is bordered by the Atlantic Ocean to the east, Biscayne Bay to the west, Sands Key (across Sands Cut) to the north and Old Rhodes Key (across Caesar Creek) to the south.
 Adams Key is just west of the southern end of Elliott Key.
 Elliott Key is about seven miles (11 km) long.
 Its maximum width is about 2500 ft near the north end and its average width is less than 2000 ft .
 The higher elevations on the island range from 6 to 8 ft above sea level and occur generally along an unimproved road that runs longitudinally through the center of the island.
 The average elevation is about 3 ft above sea level.
 The key is accessible only by boat.
 Elliot Key has a National Park Service campground, but is otherwise uninhabited.
Tidal flooding, also known as sunny day flooding or nuisance flooding, is the temporary inundation of low-lying areas, especially streets, during exceptionally high tide events, such as at full and new moons.
 The highest tides of the year may be known as the king tide, with the month varying by location.
 In Florida, controversy was created when state-level government mandated that the term "nuisance flooding" and other terms be used in place of terms such as sea level rise, climate change and global warming, prompting allegations of climate change denial, specifically against Governor Rick Scott.
 This amid Florida, specifically South Florida and the Miami metropolitan area being one of the most at risk areas in the world for the potential effects of sea level rise, and where the frequency and severity of tidal flooding events increased in the 21st century.
 The issue is more bipartisan in South Florida, particularly in places like Miami Beach, where a several hundred million dollar project is underway to install more than 50 pumps and physically raise roads to combat the flooding, mainly along the west side of South Beach, formerly a mangrove wetland where the average elevation is less than one meter (3.3 feet).
 In the Miami area, where the vast majority of the land is below 10 ft , even a one-foot increase over the average high tide can cause widespread flooding.
 The 2015 and 2016 king tide event levels reached about 4 ft MLLW, 3 ft above mean sea level, or about 2 ft NAVD88, and nearly the same above MHHW.
 While the tide range is very small in Miami, averaging about 2 ft , with the greatest range being less than 2 m , the area is very acute to minute differences down to single inches due to the vast area at low elevation.
 NOAA tide gauge data for most stations shows current water level graphs relative to a fixed datum, as well as mean sea level trends for some stations.
 During the king tides, the local Miami area tide gauge at Virginia Key shows levels running at times 1 ft or more over datum.
The base level of a river or stream is the lowest point to which it can flow, often referred to as the 'mouth of the river'.
 For large rivers, sea level is usually the base level, but a large river or lake is likewise the base level for tributary streams.
 All rivers and streams erode toward sea level, which is also known as the "ultimate base level."
 A rather rare exception can be seen in the Jordan River, for which the base level is the Dead Sea, 417 m below modern sea level.
 If a river is dammed, a new base level (the level of the reservoir) replaces the ultimate base level.
 As a result, the stream’s base level is raised.
 Consequently, this reduces the stream’s velocity, leads to deposition, and a reduction of the gradient upstream from the reservoir.