12 May 2023 — The U.S. National Ice Center (USNIC) has confirmed that icebergs A-76E, A76-F, A76-G, A76-H, and A76-I calved from iceberg A-76A in the northern Weddell Sea. The calving event was first spotted on MODIS imagery as early as May 08. A-76 first calved from the Ronne Ice Shelf in May 2021. A-76 calved into A-76A, A-76B, and A-76C later that month. A-76D calved on or about 28 April 2023.
Go to Article29 April 2023 — The U.S. National Ice Center (USNIC) has confirmed that iceberg A-76D calved from iceberg A-76A in the northern Weddell Sea. As of April 28, A-76D was centered at 56°46' South and 42°10' West and measured 19 nautical miles on its longest axis and 5 nautical miles on its widest axis. A-76 first calved from the Ronne Ice Shelf in May 2021 and subsequently calved into A-76A, A-76B and A-76C later that month.
Go to Article28 April 2023 — Commander R. D. Travis Wendt, USN relieved Commander Casey J. Gon, USN as Commanding Officer of NAVICECEN during a change of command ceremony held at the NOAA Satellite Operations Facility in Suitland, MD on April 28, 2023 at 1000.
Go to Article24 April 2023 — The U.S. National Ice Center (USNIC) has confirmed that iceberg C-40 calved from the Vanderford Glacier in the Wilkes Land Region of Antarctica. As of April 23, C-40 was centered at 66°32' South and 110°17' East and measured 7 nautical miles on its longest axis and 4 nautical miles on its widest axis..
Go to Article03 March 2023 — The U.S. National Ice Center (USNIC) has determined the Great Lakes experienced maximum ice coverage for the 2022-2023 ice season on February 04, 2023 at approximately 23.35% coverage. This maximum is significantly lower than the average maximum of 53%¹ and occurred approximately one month earlier than normal.
Go to Article24 February 2023 — The U.S. National Ice Center (USNIC) has confirmed that iceberg A-80D (figure 1, below) calved from iceberg A-80A in the Weddell Sea. As of February 24, A-80A was centered at 72°02' South and 59°17' West and measured 12 nautical miles on its longest axis and 8 nautical miles on its widest axis. A-80D was centered at 72°11' South and 59°20' West and measured 7 nautical miles on its longest axis and 5 nautical miles on its widest axis. The initial break was seen in satellite imagery on 24 February. A-80A first calved from the Larsen-D Ice Shelf in November 2022 along with A-80B and A-80C. A-80B and A-80C are no longer large enough to track.
Go to Article24 January 2023 — The U.S. National Ice Center (USNIC) has confirmed that iceberg A-81 calved from the Brunt Ice Shelf in the Weddell Sea. As of January 24, A-81 was centered at 75°39' South and 26°47' West and measured 28 nautical miles on its longest axis and 25 nautical miles on its widest axis. The initial break was seen in satellite imagery on 24 January.
Go to Article29 November 2022 — The U.S. National Ice Center (USNIC) has confirmed that the three new A-80 icebergs calved at the same time from a larger calving event of the Larsen-D Ice Shelf in the Weddell Sea. As of November 29, A-80A was centered at 71°49' South and 60°13' West and measured 19 nautical miles on its longest axis and 9 nautical miles on its widest axis, A-80B was centered at 71°28' South and 60°20' West and measured 14 nautical miles on its longest axis and 5 nautical miles on its widest axis, A-80C was centered at 71°35' South and 60°29' West and measured 10 nautical miles on its longest axis and 2 nautical miles on its widest axis. The initial break was seen in satellite imagery on 27 November..
Go to Article19 October 2022 — The U.S. National Ice Center (USNIC) has confirmed that iceberg D-32 has calved from the Amery Ice Shelf in the Amery Region of Antarctica. As of October 19, D-32 was centered at 68° 25' South and 70° 35' East and measured 10 nautical miles on its longest axis and 9 nautical miles on its widest axis. D-32 likely calved on or around October 14, and has drifted 14 nautical miles away from the shelf since then.
Go to Article26 Septemper 2022 — The U.S. National Ice Center (USNIC) has determined the 2022 minimum Arctic sea ice extent occurred in mid-September 2022 with an area of 4.72 million square kilometers based on analysis from the USNIC’s Interactive Multisensor Snow and Ice Mapping System (IMS), used in the Multisensor Analyzed Sea Ice Extent (MASIE) product, jointly created with the National Snow and Ice Data Center (NSIDC).
Go to ArticleU.S. National Ice Center (USNIC) requests all cryosphere professionals to consider submitting an abstract to the USNIC’s session, “Advances in Operational and Scientific Sea Ice Applications,” at the American Meteorological Society (AMS) 2023 annual meeting, January 8-12, 2023 in Denver (and online). All are encouraged to consider an oral presentation.
Go to Article15 August 2022 — U.S. Naval Meteorology and Oceanography (Naval Oceanography) representation from U.S. National Ice Center (USNIC) were part of personnel aboard the USCGC Healy (WAGB-20) to successfully deploy Sofar Ocean spotter-buoys during its patrol to the North Pole, this Summer.
Go to Article13 July 2022 — U.S. National Ice Center's(USNIC) Information Technology Department Head, Mr. George Wachira, accepted an Esri Special Achievement award in Geographic Information Systems(GIS) at the 2022 Esri User Conference on behalf of USNIC's workfore.
Go to Article10 Jun 2022 — Iceberg A-74 has calved into two icebergs A-74A and A-74B near Berkner Island in the Weddell Sea. As of June 07, A-74A was centered at 76° 55' South and 45° 54' West and measured 28 nautical miles on its longest axis and 18 nautical miles on its widest axis.
Go to Article25 April 2022 — Iceberg C-39 has calved from the Scott Glacier area of the Shackleton Ice Shelf in the Wilkes Land Region of Antarctica. As of April 22, C-39 was centered at 65° 40' South and 99° 44' East and measured 15 nautical miles on its longest axis and 8 nautical miles on its widest axis.
Go to Article21 March 2022 — Iceberg C-38 Has Calved into two new icebergs named C-38A and C-38B. C-38A was centered at 65° 16' South and 101° 47' East and measured 10 nautical miles on its longest axis and 8 nautical miles on its widest axis. C-38B was centered at 65° 07' South and 101° 43' East and measured 8 nautical miles on its longest axis and 7 nautical miles on its widest axis. In the five days since calving from the Conger Ice Shelf, these icebergs have drifted approximately 40 nautical miles to the west northwest.
Go to Article22 March 2022 — The U.S. National Ice Center (USNIC) has determined the 2022 maximum Arctic sea ice extent occurred at the end of February 2022 with an area of 15.04 million square kilometers based on analysis from the USNIC’s Interactive Multisensor Snow and Ice Mapping System (IMS), used in the Multisensor Analyzed Sea Ice Extent (MASIE) product, jointly created with the National Snow and Ice Data Center (NSIDC).
Go to Article17 March 2022 — Iceberg C-38 has calved from the Conger Ice Shelf in the Wilkes Land Region of Antarctica. As of March 17, C-38 was centered at 65° 40' South and 102° 46' East and measured 16 nautical miles on its longest axis and 10 nautical miles on its widest axis. C-38 comprised virtually all that remained of the Conger ice shelf, which was adjacent to the Glenzer Ice Shelf which calved last week as iceberg C-37.
Go to Article15 March 2022 — The U.S. National Ice Center has determined that the Great Lakes experienced maximum ice coverage for the 2021-2022 ice season of approximately 56% on February 26, 2022.
Go to Article08 March 2022 — Iceberg C-37 has calved from the remnants of the Glenzer Ice Shelf. As of March 7, C-37 was centered at 65° 35' South and 103° 23' East and measured 13 nautical miles on its longest axis and 3 nautical miles on its widest axis
Go to Article04 March 2022 — Iceberg A-79 has calved from the Larsen-D Ice Shelf in the Weddell Sea, continuing a years-long process of calving that has resulted in several named icebergs. As of March 4th, A-79 was centered at 71° 08' South and 60° 28' West and measured 9.5 nautical miles on its longest axis and 3 nautical miles on its widest axis.
Go to Article26 January 2022 — Iceberg, D-31 has calved from the Fimbul Ice Shelf on the Princess Martha Coast of Antarctica, located at at 69°54’ South, 2°20’ East. It measures 16 nautical miles on its longest axis and 2 nautical miles on its widest axis.
Go to Article28 October 2021 — Iceberg, A-69C. A-69C is located at at 66°51’ South, 59°39’ West, in the Weddell Sea. It measures 10 nautical miles on its longest axis and 3 nautical miles on its widest axis.
Go to Article22 September 2021 — U.S. National Ice Center determined the 2021 Arctic sea ice extent minimum was reached on September 12, 2021.
Go to Article26 August 2021 — Iceberg A-78 has calved from the Jelbart Ice Shelf on the Princess Martha Coast of Antarctica, located at 70° 21' South, 3° 58' West, measuring 18 nautical miles on its longest axis and 4 nautical miles on its widest axis.
Go to Article18 August 2021 — The National Oceanic and Atmospheric (NOAA) team at the NSIDC (NOAA@NSIDC) and U.S. National Ice Center (USNIC) announced Interactive Multisensor Snow and Ice Mapping System (IMS) data is now available in NetCDF file format for 1km and 4km gridded data.
Go to Article15 August 2021 — Iceberg A-77 has calved from the Ekstrom Ice Shelf on the Princess Martha Coast of Antarctica, located at 70° 44' South, 10° 47' West, measuring 27 nautical miles on its longest axis and 4 nautical miles on its widest axis.
Go to Article12 July 2021 — CDR Casey J. Gon relieved CDR Heather H. Quilenderino as Commanding Officer of NAVICEN during a change of command ceremony held at the NOAA Satellite Operations Facility (NSOF) in Suitland, MD on 08 July 2021 at 1000.
Go to Article07 June 2021 — Iceberg D-28 collided with ice shelves in the Queen Maud Land Region of Antarctica creating 5 new icebergs.
Go to Article26 May 2021 — Iceberg A-76 has calved two large icebergs. A-76 is now known as A-76A. The icebergs which formed are named A-76B, and A-76C.
Go to Article14 May 2021 — Iceberg A-76 has calved from the Ronne Ice Shelf, located at 75° 17' South, 58° 54' West, measuring 89 nautical miles on its longest axis and 14 nautical miles on its widest axis. This makes A-76 the largest iceberg in the world.
Go to Article02 April 2021 — The U.S. National Ice Center has determined that the 2021 maximum Arctic sea ice extent occurred on 10 March 2021 with an area of 14.87 million square km.
Go to Article26 March 2021 — A-75 has calved from the Larsen-F Ice Shelf, just north of Larsen-G and the Ronne Ice Shelves. Iceberg A-75 was located at 74° 08' South, 60° 30' West and measures eight nautical miles on its longest axis and three nautical miles on its widest axis.
Go to Article01 March 2021 — A-74 has calved from the north facing side of the Brunt Ice Shelf. The new iceberg A-74 was located at 75° 13' South, 25° 41' West and measures 30 nautical miles on its longest axis and 18 nautical miles on its widest axis.
Go to Article01 March 2021 — The U.S. National Ice Center has determined that the Great Lakes experienced maximum ice coverage for the 2020-2021 ice season of approximately 46.5% on February 19, 2021.
Go to Article10 February 2021 — A-68P has calved from A-68J. As of February 10th, the new iceberg A-68P was located at 56° 22' South, 33° 13' West, and measures 15 nautical miles on its longest axis and two nautical miles on its widest axis.
Go to Article10 February 2021 — A-68G has broken again prompting the naming of A-68O. As of February 10th, the new iceberg A-68O was located at 56° 14' South, 35° 42' West, and measures 11 nautical miles on its longest axis and two nautical miles on its widest axis.
Go to Article08 February 2021 — A-68G has broken again prompting the naming of A-68N. As of February 6th, the new iceberg A-68N was located at 56° 54' South, 34° 53' West and measures 15 nautical miles on its longest axis and two nautical miles on its widest axis.
Go to Article31 January 2021 — A-68G has broken in half prompting the naming of A-68M in the continued rapid break-up of the A-68A family of icebergs.
Go to Article30 January 2021 — Three new icebergs (A-68J, A-68K, and A-68L) calved from A-68A in the South Atlantic Ocean. For the third consecutive day, large icebergs have calved from the main iceberg, A-68A.
Go to Article28 January 2021 — The U.S. National Ice Center (USNIC) has confirmed a new iceberg calved from iceberg A-68A in the South Atlantic Ocean. The new iceberg A-68G is located at 56° 29' South, 35° 48' West. A-68G measures 29 nautical miles on its longest axis and 10 nautical miles on its widest axis.
Go to Article19 January 2021 — The Larsen-D Ice Shelf calved two more icebergs which are large enough to be named. The breakup occurred in mid-December 2020 from the northern part of Larsen-D approximately 150 nautical miles north of the recently named A-70 and A-71 icebergs. Similar to the A-70 and A-71 calving, it had been difficult to confirm whether these were icebergs large enough to be named or extremely old sea ice that had fasted to the ice shelf. Recent imagery showing surface topography typical of icebergs has allowed us to confirm these are indeed icebergs. The new iceberg A-72 is located at 69° 39' South, 60° 53' West measures 11 nautical miles on its longest axis and 4 nautical miles on its widest axis. The new iceberg A-73 is located at 69° 47' South, 60° 38' West and measures 9 nautical miles on its longest axis and 5 nautical miles on its widest axis.
Go to Article08 January 2021 — The Larsen-D Ice Shelf calved several icebergs in a calving event, two of which are large enough to be named. The breakup occurred in early November 2020, but until now it had been impossible to confirm whether these were icebergs large enough to be named or extremely old sea ice that had fasted to the ice shelf. Recent imagery showing surface topography typical of icebergs has allowed us to confirm these are indeed icebergs. The new iceberg A-70 is located at 72° 21' South, 59° 39' West and measures 8 nautical miles on its longest axis and 5 nautical miles on its widest axis. The new iceberg A-71 is located at 72° 31' South, 59° 31' West and measures 8 nautical miles on its longest axis and 3 nautical miles on its widest axis.
Go to Article22 December 2020 — Two new icebergs calved from A-68A in the South Atlantic Ocean. These new icebergs come just three days after A-68D was calved. The new iceberg named A-68E is located at 56° 45' South and 36° 34' West. A-68E measures 33 nautical miles on its longest axis and 8 nautical miles on its widest axis. The new iceberg A-68F is located at 56° 32' South and 36° 51' West. A-68F measures 14 nautical miles on its longest axis and 7 nautical miles on its widest axis.
Go to Article18 December 2020 — A new iceberg has calved from the A-68A iceberg in the South Atlantic Ocean. This iceberg, named A-68D, is located at 55°5’ South, 37°23’ West. The iceberg measures 10 nautical miles on its longest axis and 5 nautical miles on its widest axis.
Go to Article24 September 2020 — U.S. National Ice Center determined the 2020 Arctic sea ice extent minimum was reached on September 15, 2020.
Go to Article31 July 2020 — Senior Ice Analyst Michael Lowe, U.S. National Ice Center, was tasked with deploying on U.S. Coast Guard’s Cutter Polar Star in support of Operation Deep Freeze season 2019-2020. Mr. Lowe provided ice and environmental support for its Antarctic transit to support the resupply of McMurdo Station.
Go to Article09 July 2020 — The newly named iceberg A-69 has broken into two nameable icebergs. A-69A is located at 69°01’ South, 60°34’ West, in the Weddell Sea, it measures 10 nautical miles on its longest axis and 9 nautical miles on its widest axis. Iceberg A-69B is located at 68°52’ South, 60°41’ West, in the Weddell Sea, it measures 10 nautical miles on its longest axis and 7 nautical miles on its widest axis.
Go to Article26 June 2020 — A new iceberg has calved from the Larsen-D Ice Shelf in the Weddell Sea. A-69 is located at 68°59’ South, 60°38’ West in the Weddell Sea. The iceberg measures 19 nautical miles on its longest axis and 10 nautical miles on its widest axis with an area of approximately 135 square nautical miles.
Go to Article24 April 2020 — Iceberg B-50 calved from the eastern edge of the Getz Ice Shelf in the Amundsen Sea. B-50 is located at 73°44' South, 128°41' West and measures 15 nautical miles on its longest axis and 6 nautical miles on its widest axis with an area of approximately 62 square nautical miles.
Go to Article24 April 2020 — The U.S. National Ice Center has confirmed that a new iceberg calved from parent iceberg A-68A, currently the world’s largest iceberg. The new iceberg A-68C is the second to calve from origin iceberg A-68.
Go to Article10 February 2020 - The National Ice Center named a new iceberg that meets the criteria for tracking by the USNIC. This iceberg from Pine Island Glacier is part of a larger calving event that mostly broke apart into smaller pieces.
Go to Article06 February 2020 - The U.S. National Ice Center named a new iceberg that meets the criteria for tracking by the USNIC. This particular iceberg calved from the Dotson Ice Shelf in the Amundsen Sea just west of Thwaites Glacier.
Go to Article27 January 2020 - Over the last two months Antarctica's largest iceberg, A-68A, has been moving off the northern tip of the Antarctic Peninsula. This feature product shows the movement over the last 2 months in an animated graphic.
Go to Article04 October 2019 - The U.S. National Ice Center named a new iceberg when it calved from the western half of the Amery Ice Shelf
Go to Article04 October 2019 - U.S. National Ice Center determined the 2019 Arctic sea ice extent minimum was reached on September 17, 2019. This year’s analysis indicated a minimum 3-day average of 3.916 million square kilometers.
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