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Archive for October 22nd, 2009

Northern Jutland Peninsula, Denmark

54.7N 11.0E

October 22nd, 2009 Category: Lakes, Rivers

Denmark - September 29th, 2009

Denmark - September 29th, 2009

In the northernmost part of Denmark, on the Jutland Peninsula, lies the Limfjord (bottom left quadrant), a shallow sound in Denmark that extends from Thyborøn Channel on the North Sea to Hals on the Kattegat (center).

Offshore and northeast of Hals is Læsø, the largest island in the North Sea bay of Kattegat. It is located 19 kilometers (12 mi) off the Danish mainland.

Together with the island of Anholt (central right edge), Læsø belongs to the Danish “desert belt”; during the summer months there is so little rain that streams and ponds partly dry up.

The landmass visible in the upper right corner is part of Sweden. Gothenburg, the second largest Swedish city and the biggest sea port of the Nordic countries, can be seen here at the mouth of Göta Älv River.

Northern Channel Islands South of Santa Barbara, California – October 22nd, 2009

34.4N 119.6W

October 22nd, 2009 Category: Image of the day, Snapshots

California, USA - September 24th, 2009

California, USA - September 24th, 2009

The Channel Islands of California are a chain of eight islands located in the Pacific Ocean off the coast of Southern California along the Santa Barbara Channel in the United States of America.

Four of the eight islands can be seen south of the city of Santa Barbara in this orthorectified image (from left to right): San Miguel, Santa Rosa, Santa Cruz and Anacapa. The Channel Islands are actually divided into two groups; these four islands belong to the Northern group. The four Northern Islands used to be a single landmass known as Santa Rosae.

Also, along with Santa Barbara, the Northern Channel Islands are part of the Channel Islands National Park, created in 1980. The Channel Islands National Marine Sanctuary encompasses the waters six nautical miles (11 kilometers) offshore.

Typhoon Lupit (22W) North of Philippines

17.9N 124.4E

October 22nd, 2009 Category: Tropical Cyclones

Typhoon Lupit Near Taiwan - October 22nd, 2009

Typhoon Lupit Near Taiwan - October 22nd, 2009

Track of Lupit - October 21st, 2009 © Univ. of Wisconsin

Track of Lupit

Enhanced image

Enhanced image

Typhoon 22W (Lupit), located approximately 370 nautical miles northeast of Manila, Philippines, has tracked west-southwestward at 6 knots over the past six hours. Maximum significant wave height is 31 feet.

Recent animated infrared imagery shows a strong system with tightly curved banding, deep convection over the low level circulation center (LLCC) and good radial outflow. An AMSR-E pass shows multiple deep convective bands wrapping into a well formed eye-like feature in the lower levels (37ghz). An upper level image (89ghz), however, shows the eye-like feature open on the northern side of the LLCC.

The system is moving into a region of weaker steering as it moves out of the periphery of the subtropical ridge (STR) to the northeast and is yet to come fully under the influence of the STR to the west. As a result of the system being in a weak steering environment, numerical guidance is in poor agreement as to the track of TY 22W.

Two very distinct scenarios exist for the track. The first scenario is for the system to continue slowly tracking to the west-southwest towards the northern tip of Luzon under the influence of a finger of the STR to the west. Under this scenario, around TAU 72, a short-wave midlatitude trough will pass through the area, erode the finger of the STR, and the system will become quasi stationary in the vicinity of the Strait of Luzon.

The second scenario, on the other hand, calls for the system to rapidly turn to the northeast between TAU 12 and 24 under the influence of a westerly surge from the northern side of the STR to the west. In this scenario, the system would then be picked up by the flow around the STR to the east and would then track into the midlatitude westerlies.

A thorough analysis of the deep layer mean flow around the STR to the west of the system indicates that Lupit is currently south of the STR axis, and it is unlikely to be affected by flow on the northern side of the STR. For this reason, the forecast favors the first scenario, but the second scenario remains plausible.

Hurricane Neki (03C) Situated West of Hawaii

19.9N 160.4W

October 22nd, 2009 Category: Tropical Storms

Hurricane Neki - October 20th, 2009

Hurricane Neki - October 20th, 2009

Enhanced image

Enhanced image

Track of Neki - October 21st, 2009 © Univ. of Wisconsin

Track of Neki

The center of Hurricane Neki (03C) is estimated to be located within 15 nm of 18.0°N 166.8°W, about 620 mi (1000 km) west-southwest of Honolulu, Hawaii and about 410 mi (660 km) south of French Frigate Shoals.

The system has maximum sustained winds of 100 kt (115 mph, 185 km/h), with higher gusts. It has a minimum central pressure of 960 mbar (28.35 inches), and is moving north-northwest at 8 kt (9 mph, 15 km/h).

Hurricane force winds extend up to 40 miles (65 km) from the center of Neki, and tropical storm force winds up to 255 miles (410 km) from the center.

A hurricane warning is in effect for the Papahanaumokuakea National Monument from Nihoa Island to French Frigate Shoals to Maro Reef, meaning that hurricane conditions are expected in the warning area within 36 hours.

A hurricane watch also extends as far as Lisianski, meaning that hurricane conditions are possible in the watch area within the next 48 hours. The tropical storm watch for Johnston Island, however, has been discontinued.