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CITY GOLF COURSES TEMPORARILY CLOSED DUE TO HEAVY RAINS             (Sun., Dec. 26, 2010)---The City's Ewa Villages and West Loch golf courses are closed today due to heavy rains and the grounds already saturated from last week's rainy conditions.             The National Weather Service has issued a flash flood watch for Oahu until Tuesday.                Forecasters predict widespread rain, heavy showers and the risk of flash flooding.  Residents should avoid non-essential travel, be aware of road closures and monitor TV and radio broadcasts during this period.                Flash flooding can cause a wall of water to rush down drainage canals and streams. Avoid these areas during heavy rainfall and do not attempt to cross flooded roads.  "Turn around, don't drown."   -30-    Media Contact:   Louise Kim McCoy, Mayor's Office, 768-7798

Hawaiian Islands Satellite Interpretation Message

Hawaiian Islands Satellite Interpretation Message
Mon, 27 Dec 2010 12:30:00 -0600

Based on data through 1800 UTC December 27 2010.

Water vapor shows an upper level trough about 780 miles west northwest of Kauai. Layered clouds blanket the area from the main Hawaiian islands westward to the upper level trough. These layered clouds cover Niihau, Kauai and Oahu at 8 am, and are quickly spreading over the remaining islands. Through thin spots in the clouds, it would appear that low clouds over the islands of Maui county are found over the northern shores of Molokai, the northern slopes of Lanai and the east facing slopes of Haleakala on Maui.

Thunderstorms are embedded within the layered clouds, and additional thunderstorms are forming out ahead of the main area of layered clouds. To the southwest of Oahu at 8 am, a couple of thunderstorms are noted with tops reaching near 43000 feet. One thunderstorm is about 30 miles south southwest of Honolulu, and another is about 47 miles west of Honolulu.

There is a thick layered northeast to southwest band over Kauai and Niihau this morning, that extends about 190 miles northeast of Kauai, and almost 500 miles to the southwest. The section of the band over Kauai extends east into the Kauai channel, to about 60 miles northwest of Kauai. Further to the northwest, there is an approximately 125 miles area where the clouds are not as thick. Then the leading edge of another northeast to southwest oriented layered cloud band is about 200 miles northwest of Kauai.

Low clouds east of the Big Island are moving from the southeast around 20 mph. Low cloud movement near Kauai is difficult to discern with the layered clouds.

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Hawaiian Islands Satellite Interpretation Message

Hawaiian Islands Satellite Interpretation Message
Mon, 27 Dec 2010 06:10:00 -0600

Based on data through 1130 UTC December 27 2010.

The early Monday morning water vapor imagery shows a slow moving upper level trough 850 miles west northwest of Kauai. Using the back edge to the area of multilayered clouds as the trough axis, suggest a slight eastward push of the trough during the past 8 hours. The points of the trough axis are as follows, 30°N 169°W to 24°N 174°W to 15°N 179°W. There appears to be a vort Max at the base of the upper trough at 17°N 177°W. A large pool of multilayered clouds occupies the area between the trough and Kauai, and from 30°N to 10°N.

Several areas of deep convection mark the eastern edge to the area of layered clouds. The first of two areas of cumulonimbus /cb/, thunderstorms, is about 65 miles either side of a line from 29°N 155°W to 20°N 163°W. Cb tops are between 40000 to 45000 feet, with its eastern most edge grazing Kauai county. The island, Niihau, located just southwest of Kauai, is about to experience passing heavy showers and thunderstorms.

The second area has deeper convection with CB tops to 51000 feet. It located just to the south of first, from 20°N 163°W to 15°N 166°W to 12°N 170°W. The width of this area is about 100 miles either side. A separate area of deep convection lies to the east of the second area, between 14°N and 10°N, to 160°W. This mass of clouds has started its northward push towards the main Hawaiian islands. Dense high level cirrus clouds is just reaching the islands as well.

An area of shower bearing low clouds, positioned southeast of the Big Island earlier in the evening, has reach the Kau coast of the Big Island this hour, bringing a few showers to that part of the state. The tops of these showers are between 10000 and 15000 feet. Other than that, remaining smaller islands, and the rest of Big Island, have been pretty much rain free. Low cloud coverage to the east and northeast of the Big Island and Maui consist of several pools of cumulus clouds containing a few showers. More unstable looking shower bearing clouds is located about 370 miles east southeast of the Big Island.

Low level wind flow is mainly southeast and south across the main Hawaiian islands. The speed ranges from 15 to 20 mph over the Big Island end to 20 to 25 mph elsewhere. Last but not least, the area west of the upper trough, which include Midway atoll, is enjoying fair weather with stable, shallow, stratocumulus clouds present.

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LAU

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Hawaiian Islands Satellite Interpretation Message

Hawaiian Islands Satellite Interpretation Message
Sun, 26 Dec 2010 23:20:00 -0600

Based on data through 0430 UTC December 27 2010.

Water vapor imagery late this afternoon shows an upper level trough 880 miles west northwest of Kauai. The points of the trough axis are as follows, 30°N 169°W to 24°N 175°W to 15°N 179°W. The axis extends further to the north to an upper level low at 37°N 163°W. Multilayered clouds occupy the area between the trough and Kauai and from 30°N to 20°N. There are pockets of embedded thunderstorms, one of which is located close to Kauai. The 630 pm HST satellite imagery shows a line of cumulonimbus clouds /cb/, and or thunderstorms, within 60 nm either side of a line from 25°N 160°W to 19°N 167°W, or 70 miles northwest of Kauai. The tops of the cb's are around 41000 feet. Southwest winds east of the trough have an area of maximum wind speed positioned to the northwest of Kauai. To the west of the upper trough, is the nose of a strong jet stream of 135 mph. Altogether, the upper trough is advancing eastward at about 12 mph, and appears to be deepening south of 20°N.

A large pool of tropical moisture, lying in wait between 17°N and 08°N from 162°W to 175°W, or 650 miles southwest of Kauai, may play a role later on on the island's weather should the upper level trough deepens further.

Also, the satellite imagery at sunset, shows the islands west of Molokai being influenced by various type of clouds from cirrus to scattered cumulus clouds, including an isolated cb's with tops to 35000 feet. Patches of cirrus clouds are passing through the rest of the state with only a small handful of low clouds here and there. Weather radar is detecting little shower activity from Oahu eastward. However, more cirrus clouds are heading in our direction from the south. So, look for increasing high clouds this evening.

Another item worth mentioning, a dry air mass has settled over Midway atoll and parts of the northwest Hawaiian islands refuge, or the area west of the upper level trough. Patchy stable stratocumulus clouds are noted here.

The low level wind flow over the smaller of the main Hawaiian islands is out of the south at 10 to 20 mph, while the Big Island is experiencing southeast of 10 to 15 mph.

Low cloud coverage is minimal within 160 miles northeast of Maui and the Big Island. Scattered to broken low clouds are closing in on the Big Island from the south and southeast however.

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LAU

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Hawaiian Islands Satellite Interpretation Message

Hawaiian Islands Satellite Interpretation Message
Sun, 26 Dec 2010 18:30:00 -0600

Based on data through 0000 UTC December 27 2010.

A deep low pressure is centered near 37°N 165°W and is moving ENE at 22 mph. Two cold fronts extend south and west from the low and each front has an associated area of clouds and thunderstorms. The first is producing a band of clouds that extends from Oahu to 30°N 153°W. The band is 100 miles across just north of Oahu and expands to 350 miles wide over 30°N. Layered clouds extend up to 25 thousand feet with embedded thunderstorms producing cloud tops to 45 thousand feet. The second front is farther to the west and is centered over 17°N 177°W to 27°N 166°W. This 300-mile wide band contains embedded thunderstorms with tops to 40 thousand feet. Most thunderstorms are located along the eastern edge of the band within layered clouds that extend to 30 thousand feet.

An upper level trough located 400 miles east of Hilo is producing broken low clouds with embedded isolated thunderstorms. The area of clouds is within 18°N to 24°N from 149°W to 143°W. The upper trough and clouds are moving 20 mph toward the NE.

Visible satellite imagery over the state shows low clouds associated with the aforementioned cloud band covering most of Oahu. Cloudy skies with embedded showers also cover Kauai as southerly flow brings clouds and moisture over the state. Maui county and the Big Island have partly cloudy skies over most areas with mostly cloudy skies along the mid-slopes of Haleakala, the Kona coast, and the slopes of Mauna Kea. Individual low clouds south of the state are moving 20 mph toward the NNW.

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MORRISON

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Hawaiian Islands Satellite Interpretation Message

Hawaiian Islands Satellite Interpretation Message
Sun, 26 Dec 2010 12:30:00 -0600

Based on data through 1800 UTC December 26 2010.

A deep low pressure is centered near 36°N 167°W and is moving east near 25 mph. Two cold fronts extend south and west from the low and each front has an associated area of clouds and thunderstorms. The first is producing a band of clouds centered over Oahu to 30°N 154°W. The band is 200 miles wide just north of Oahu and expands to 350 miles wide over 30°N. Layered clouds extend up to 35 thousand feet with embedded thunderstorms producing cloud tops to 45 thousand feet. The second front is farther to the west and is centered over 17°N and the dateline to 27°N 166°W. This 300-mile wide band contains embedded thunderstorms with tops to 50 thousand feet. Most thunderstorms are located along the eastern edge of the band within layered clouds that extend to 35 thousand feet.

An upper level trough located 350 miles east of Hilo is producing broken low clouds with embedded isolated thunderstorms. The area of clouds is within 17°N to 22°N from 150°W to 146°W. The upper trough and clouds are moving 20 mph toward the NE.

Visible satellite imagery over the state shows the aforementioned cloud band to the north of Oahu. Scattered thunderstorms and towering cumulus can be seen over the islands from Molokai to Kauai and also over their respective coastal waters. Individual low clouds south of the state are moving 20 mph toward the north. Both Maui and the Big Island have mostly clear skies this morning.

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MORRISON

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Hawaiian Islands Satellite Interpretation Message

Hawaiian Islands Satellite Interpretation Message
Sun, 26 Dec 2010 06:30:00 -0600

Based on data through 1200 UTC December 26 2010.

Water vapor imagery shows a broad upper level trough west of the state. A compact upper low is located north of the area near 36°N 170°W. This low is moving to the east southeast at 25 mph. A digging shortwave trough is located west of the area near 27°N 178°E. This trough is moving to the southeast at 25 mph. A surface cold front is associated with this upper level trough, and a band of broken to overcast layered clouds is associated with this front. The frontal band is up to 200 miles wide, and the western edge extends from 30°N 172°W to 26°N 180°, or from 350 miles northeast of Midway atoll to 200 miles southwest of Midway. The band is moving to the east at 15 mph. Isolated cumulonimbus clouds are embedded within the layered clouds. Cloud tops extend up to 35000 ft.

Another shortwave trough is located near 21°N 176°W, or about 500 miles south of Midway atoll. This trough is moving to the east northeast at 15 mph. An area of broken to overcast layered clouds is located generally between 17°N and a line extending from 20°N 180° to 24°N 175°W to 27°N 165°W. These clouds are moving to the northeast at 30 to 50 mph. Isolated cumulonimbus clouds are embedded within these layered clouds, with tops extending up to 40000 ft.

Closer to the state, another shortwave trough is located near 21°N 164°W, or about 300 miles west southwest of Kauai. This trough is moving to the east northeast at 40 mph. An area of broken to overcast layered clouds is located generally north of 20°N between 155°W and 163°W, covering a portion of the main Hawaiian islands. Scattered cumulonimbus clouds are embedded within the layered clouds, and are greatest in coverage along a line from 22°N 160°W to 30°N 152°W. Cloud tops extend up to 44000 ft.

Going from island to island, broken to overcast layered clouds, with embedded cumulonimbus clouds, cover Kauai and Oahu and adjacent coastal waters. Broken low clouds cover Molokai and Lanai, and southern sections of the west Maui mountains. Cumulonimbus clouds are nearly stationary across the leeward slopes of Haleakala, and also across windward coastal sections. These clouds are part of a larger plume cloud that extends southeastward across the Alenuihaha channel, originating near the Big Island. Broken low clouds cover northwest sections of the Big Island, generally from north Kohala district to north Kona district north of Keahole Point. Scattered to broken low clouds are located cover southeast sections.

To the southeast of the state, an upper level low is located near 18°N 153°W, or about 200 miles southeast of the Big Island. This low is moving to the northeast at 25 mph. An area of broken middle and high level clouds are located to the east of this low, generally between 140°W and 151°W south of 19°N. These thicker layered clouds are moving to the northeast at 20 to 30 mph. Additional cirrus clouds are located farther north, extending up to 22°N. These thinner high clouds are moving to the east and northeast at 50 mph.

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BRAVENDER

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