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The weather in Antarctica can be highly variable, and weather conditions will oftentimes change dramatically in a short period of time. Weather conditions on the continent are classified in a number of ways, and restrictions placed upon workers and other staff vary both by stations and by nations.cite-ref-1[1]

• McMurdo Station (USA)

• Scott Base (New Zealand)

• See also

• References

Below is the classification for weather conditions at McMurdo Station:cite-ref-2[2]cite-ref-3[3]cite-ref-4[4]

| Condition | Criteria | Example |

|---|---|---|

| Condition 3 / Normal Condition 3 [ 5 ] [ 6 ] | Must meet all of the following criteria: Visibility is either greater than 1 ⁄ 4 mile (400 m), or it falls to 1 ⁄ 4 mile or less for less than one minute at a time Windspeed is either below 48 knots (89 km/h; 55 mph), or it reaches 48 knots or above for less than one minute at a time Air temperature and wind chill are either above −75 °F (−59 °C), or falls to −75 °F or below for less than one minute at a time | |

| Condition 2 / Severe Condition 2 [ 5 ] [ 6 ] | Must meet all of the following criteria: Visibility is either greater than or equal to 100 feet (30 m), or it falls below 100 feet for less than one minute at a time Windspeed is either less than or equal to 55 knots (102 km/h; 63 mph), or it exceeds 55 knots for less than one minute at a time Air temperature and wind chill are either −100 °F (−73 °C) or above, or falls below −100 °F for less than one minute at a time And also must meet one or more of the following criteria: Visibility is less than or equal to 1 ⁄ 4 mile (400 m), sustained for one minute or longer Windspeed greater than 48 knots (89 km/h; 55 mph), sustained for one minute or longer Air temperature and/or wind chill of −75 °F (−59 °C) or below, sustained for one minute or longer | |

| Condition 1 / Severe Condition 1 [ 5 ] [ 6 ] | Must meet one or more of the following criteria: Visibility less than 100 feet (30 m), sustained for one minute or longer Windspeed over 55 knots (102 km/h; 63 mph), sustained for one minute or longer Air temperature and/or wind chill below −100 °F (−73 °C), sustained for one minute or longer | |

Below is the classification for weather conditions at Scott Base:cite-ref-7[7]

| Condition | Criteria |

|---|---|

| Weather Condition 3 | Must meet all of the following criteria: Severe weather is possible within 24 to 48 hours Visibility is greater than 300 metres (980 ft) Wind less than or equal to 45 knots (83 km/h; 52 mph) Air temperature and wind chill are above −60 °C (−76 °F) |

| Weather Condition 2 | Must meet all of the following criteria: Visibility is greater than 30 metres (98 ft) Windspeed is no greater than 55 knots (102 km/h; 63 mph) Air temperature and wind chill are no colder than −73 °C (−99 °F) And also must meet one or more of the following criteria: Visibility less than 300 metres (980 ft) Windspeed is greater than or equal to 48 knots (89 km/h; 55 mph) Air temperature and/or wind chill of −60 °C (−76 °F) or below |

| Weather Condition 1 | Must meet one or more of the following criteria: Visibility less than 30 metres (98 ft) Windspeed over 55 knots (102 km/h; 63 mph) Air temperature and/or wind chill are below −73 °C (−99 °F) |

• Climate of Antarctica

cite-note-11. ↑ "Antarctic weather – Australian Antarctic Program". www.antarctica.gov.au. 2019-02-18. Retrieved 2024-03-31.

cite-note-22. ↑ "Welcome To McMurdo Station" (PDF). U.S. National Science Program. Archived from the original (PDF) on 2014-09-10.

cite-note-33. ↑ "Field Manual for the U.S. Antarctic Program" (PDF). U.S. Antarctic Program. Archived from the original (PDF) on 2007-03-06.

cite-note-44. ↑ citerefhoward1997Howard, George (1997-10-18). "Winter Storm: Weathering the Conditions" (PDF). The Antarctic Sun. p. 8. Retrieved 2024-03-31.

cite-note-0-51. citerefferrierwalkerwebsterFerrier, Cara; Walker, Meghan; Webster, Kaija. Mastro, Jim (ed.). "Field Manual for the U.S. Antarctic Program" (PDF). United States Antarctic Program. Retrieved 2024-03-31.

cite-note-1-62. "Weather Condition Definitions". lambda.gsfc.nasa.gov. Retrieved 2024-03-31.

cite-note-77. ↑ Field Manual: 2011-2013 (PDF). New Zealand: Antarctica New Zealand. 2012. Archived from the original (PDF) on 2015-01-15.