characteristics of climate variability that may pertain to the climate hypothesis regarding the long-term population decline of Steller sea lions (Eumetopias jubatus). The Aleutian Islands experience oceanic climate with heavy rainfall and moderate temperatures. The storm track almost always leads from the west toward the east along the Aleutian chain. Summer temperatures are also moderated by the strong marine environment so that daytime highs seldom surpass 70 degrees F. Temperature extremes increase as one travels up the Alaska Peninsula, so that Cold Bay is slightly colder in winter and warmer in summer than Unimak Island. Since this area is in the zone of the westerly winds, moist air and relatively warm temperatures come into the area after having traveled over extensive ocean areas. The maximum Ice Extent in the Bering Sea is shown in the maps to the right. Another storm will race through the Intermountain West today with snow, arrive in the Southern U.S. on Sunday with snow, rain and thunderstorms and reach the East on Monday. The Aleutian Island area has the highest average wind speed of any area in the U.S. Average wind speeds are 15.6 MPH for Cold Bay, with the highest averages from September through May. The Aleutian Islands were no exception to the trend. This is because this area is in the storm track of the Aleutian low pressure cells that pass by from west to east with great frequency. An intense low-pressure storm system packing strong winds and massive waves is expected to move over the Bering Sea and through the Aleutian Islands of Alaska this weekend, weather … The chart below plots the average high and low temperature for each month of the year. Their color variations are probably due to differences in temperature and in the size of water droplets that make up the clouds. Power et al. The average annual temperature for the inhabited islands is about 38 °F in January and 52 °F in August. On average the month of December is affected by foggy conditions on 16 days. The region experienced record-breaking heat and record-dry conditions. For Aleutian Islands in the coming week the average daytime maximum temperature will be around 7°C, with a high for the week of 15°C expected on the afternoon of Thursday 29th. Early North American inhabitants are thought to have crossed the land bridge over the Bering Sea from Europe thousands of years ago. During such cold winters, the Bering Sea can be covered with ice as far as Isanotski Strait and cold Siberian air can drive the temperatures down to near zero. The Aleutian Low shifts position and changes in intensity with the seasons. An eruption of Cleveland Volcano in the Aleutians as seen from the International Space Station. The following charts show yearly weather trends with information on monthly weather averages and extremes. 1995). A combination of climate warming and loss of sea otters is harming the reefs that underpin Alaskan kelp forests in the Aleutian Islands. Travel by sea in the Unimak area with its many bays, channels, points and passages is only possible by fishermen when the wind direction and wind intensity are favorable. The Islands of the Four Mountains in Alaska’s central Aleutians are about as inhospitable an environment as a person can imagine. They extend in an arc southwest, then northwest, for about 1,100 miles (1,800 km) from the tip of the Alaska Peninsula to Attu Island, Alaska. In recent times the highest recorded temperature in December has been 12°C that's 54°F, with the lowest recorded temperature -17°C, about 1°F. The average annual rainfall is about 80 inches (2,000 mm), and Unalaska, with about 250 rainy days per … These cloud formations were seen over the western Aleutian Islands. The Aleutian Low's location and intensity is shown in the above three maps in relation to the stationary North Pacific High that lies to the south. King Cove City, Aleutian Islands weather conditions, average/minimum/maximum temperature, humidity variation graphs. The climate of the islands is oceanic, with moderate and fairly uniform temperatures and heavy rainfall. Shemya or Simiya (Aleut: Samiyax̂) is a small island in the Semichi Islands group of the Near Islands chain in the Aleutian Islands archipelago southwest of Alaska, at CoordinatesIt has a land area of 5.903 sq mi (15.29 km 2), and is about 1,200 miles (1,900 km) southwest of Anchorage, Alaska.It is 2.73 miles (4.39 km) wide and 4.32 miles (6.95 km) long. Walrus also hauled out on the sand bars on the north side of the lower Alaska Peninsula and were traditionally hunted by Aleuts (Unangan) and later by the Russians.5. The "Cradle of the Storms" is the colloquial name for the Aleutian Low area because this is the stormiest area in the north Pacific.2 These cyclonic storms generally travel eastward along the Aleutians in the zone of the westerly winds. Wind gusts over 50 MPH occur 3 or more days per month for 7 months of the year. King Cove City, Aleutian Islands free weather widget (free script for your website or blog). A total of 110 culverts are known, of which 49% have or likely to have fish passage problems. In recent years the maximum sustained wind speed has reached 96 km/h, that’s the equivalent of around 60 mph, or 52 knots. Weather forecasts for the Unimak area can be accessed on the Internet here. The islands are devoid of native vegetation except for grass and stunted willows. The chart below plots the average monthly precipitation amount. Lows in the mid 30s. Eddy energy in the Aleutian Islands region has been low from the fall 2012 through 2018, indicating the likelihood of smaller than average fluxes of volume, heat, salt, and nutrient fluxes through Amukta Pass (p. 49). The forecasts The average temperature difference between July and January is only about 10 degrees F. The moderating influence of the marine environment is the primary reason for this small temperature difference. This is also the zone where the colder air from the subarctic meets the warmer moist air to the south. The Maximum wind gust during this period was 83 MPH, but every month had gusts of 60 MPH or over. Fogs are almost constant. The Aleutian Island is mostly cone volcano’s and some are still activate, but only on one side of the Island not all of the volcano’s can still activate. James Estes, now an emeritus professor at the University of California Santa Cruz, has been studying the Aleutian Islands since 1970. A low pressure system lifting through the Great Lakes today will produce some heavy snow. J.A. June is usually the quietest month and December, January and February have 5.0 days each of winds over 50 MPH. For Washington The wettest month for Washington. Precipitation in the Unimak area occurs in all months of the year, there is no dry season. Throughout the month of December daytime temperatures will generally reach highs of around 2°C that's about 36°F. 23 November 2020 at 20:00-21:00: Rain, Temperature 7, 0.5 mm, Gale, 18 m/s from south The Alaska Stream appears to have been relatively diffuse on the south side of the eastern Aleutian Islands (p. 40). If the storm center passes to the south of Unimak, there is a backing wind shift, from SE to E, to NE and finally NW. During the winter, it is located farther south, and is large, semi-permanent, and most intense. The average daily relative humidity for December is around 84%. Climate. Animated monthly wind direction graphs can be seen here. Westerlies often occur in the fall, as shown in the wind direction rose for September. A deep-draft vessel that intends to come within 3 nautical miles of the Aleutian or Pribilof Islands and anchor to avoid severe weather shall notify the Coast Guard as soon as practicable in accordance with 33 CFR 160.215: CONTACT INFORMATION: Weather data, both graphic and numeric, for the Unimak area & Cold Bay can be accessed here. The Aleutian low is "A region of generally low pressure located near the Aleutian Islands, where sub-polar cyclones reach their maximum intensity. If the storm center passes to the south of Unimak, there is a backing windshift, starting with southeast, then backing to east, northeast and finally northwest as the storm center moves away. The climate of the islands is oceanic, with moderate and fairly uniform temperatures and heavy rainfall. Storms over the Central Aleutian Islands will bring warm air up from the south as well as rain to the islands Monday into Tuesday. The graph to the right shows the mean wind direction frequency in % for Cold Bay, the nearest reporting station. Expect 0.7 mm of precipitation over the past 3 hours. To maintain relevance to current weather trends the displayed information has been calculated using data collected over the past two decades. The average daily wind speed in December has been around 27 km/h, that’s the equivalent to about 17 mph, or 15 knots. Precipitation falls in every month of the year but is heaviest August through December, as seen in the graph on the right. The temperature regime for the Unimak area is documented at the Cold Bay weather station, about 30 miles northeast of False Pass on the Alaska Peninsula. The chart below plots the average number of days in any month that you can expect to see snow falling. It also shows the maximum and minimum recorded temperatures. Agriculture thrives between early May and late September. ANCHORAGE, Alaska (AP) — An explosive storm surpassing the intensity of 2012's Superstorm Sandy is expected to reach Alaska's western Aleutian Islands over … As a storm approaches our area from the west, the wind sets in from the southeast and builds in intensity. The Unimak Area of Alaska shows very small seasonal changes in temperature, as seen in the map to the right. Compared to neighboring regions, the Alaska Peninsula / Aleutian Islands region is categorized by a cooler, drier climate. The islands experience a maritime climate. Add Alaska (Aleutian Islands), United States to my favorites! This feature also encompasses non-stationary systems of both low and high pressure (cyclones and anticyclones) that form and dissipate along fronts and rapidly move in a broad sub-polar band of west-to-east flowing air currents widely known as the prevailing westerlies. A few conifers introduced by the Russians grow on the islands of Amaknak and Adak. Pilot Point, Aleutian Islands, Alaska weather conditions, average/minimum/maximum temperature, humidity variation graphs. This means that the winds will change direction and intensity as a low pressure storm passes by. Ice in the southern Bering Sea that extends as far as Isanotski Strait has a general chilling effect on temperatures in winter since the moderating effect of open water is gone. There is little concern about whether the day will be sunny or cloudy or even rainy, it is the wind that matters most because it determines the safety of traveling by boat or skiff. When he first visited Amchitka Island, he could count anywhere from 50 to 300 sea otters from the shore. Then, if the storm passes by to the north of Unimak, the winds veer towards the southwest and then west, and as the storm leaves the area, winds blow from the northwest and then start diminishing. The Aleutian Low storm tracks are shown in the map to the right. The stronger ALs generally move eastward south of the Aleutian Islands. “In the early years, it was a very different place,” Estes said. Scientists have linked sea urchins, otters and climate change to the destruction of reefs in the Aleutian Islands in a new study published in Science. By Tuesday morning, low-pressure storms originating from over Siberia (Russia) quickly push east and combine with some of the storms over the Aleutian Islands. Below is a picture of ice filling Isanotski Strait in False Pass.4, Amak Island lies just off shore from Isanotski Strait in the Bering Sea and it was historically a walrus hauled out, indicating that the edge of the Bering Sea ice pack was near by. This work is being done at the University of Illinois/Urbana-Champaign at the Polar Research Group/ Dept. ... (−15 °C) respectively. Temperatures range from average lows of -7O°C to -20°C in winter to average highs of 10°C to 13°C in summer (Gallant et al. Precipitation varies widely, from 530mm up to 2,080mm. A powerful storm swirled through the Aleutian Islands of Alaska this week, providing incredible satellite images and producing wind gusts near hurricane force. American Geophysical Union annual … Weather forecast for Aleutian Islands Meteogram for Aleutian Islands Tuesday 05:00 to Thursday 05:00 Long term forecast for Aleutian Islands The forecast shows the expected weather and precipitation for the afternoon hours. 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