
NWPAC outlook, 24-25 DEC
NORTH
Temperatures are cold across the northern half of the north region, courtesy of the latest surge to move into the area. The associated storm system is pushing offshore of northern japan today with a cold front sweeping through the archipelago from north to south. Most of the moisture and inclement weather is associated directly with the strong low pressure area; however, sea-effect snowfall will be prevalent across the western shores and higher terrain of Hokkaido and northern Honshu. High pressure is building in behind the storm system and is bringing clearing conditions across much of the continent, except for portions of eastern China where the frontal system and moisture coming in from the west will keep skies grey and showery.
City |
Sat High
C F
|
Sun High
C F |
Conditions
Sat Sun
|
Ulaanbaatar |
-12 |
10 |
-18 |
0 |
Mostly cloudy |
Mostly fair |
Vladivostok |
-6 |
21 |
-4 |
25 |
Partly cloudy |
Mostly fair |
Beijing |
4 |
39 |
3 |
37 |
Mostly fair |
Mostly cloudy |
Seoul |
2 |
36 |
8 |
46 |
Partly cloudy |
Mostly fair |
Tokyo |
11 |
52 |
11 |
52 |
Mostly fair |
Partly cloudy |
Xi’an |
N/A |
N/A |
N/A |
N/A |
N/A |
N/A |
Shanghai |
11 |
52 |
16 |
61 |
Mostly cloudy |
Sctd. showers |
CENTRAL
Temperatures across the central region will rebound a bit through the weekend as warmer air advects northward ahead of the surge to the north. A few showers will fall across portions of southeastern China and Taiwan today, and skies will remain cloudy over the Ryukyu Islands through the weekend. Temperatures will remain comfortably mild across the region, with the warmest readings to the south.
City |
Sat High
C F
|
Sun High
C F |
Conditions
Sat Sun
|
Kunming |
16 |
61 |
17 |
63 |
Partly cloudy |
Partly cloudy |
Hong Kong |
20 |
68 |
23 |
73 |
Sctd. showers |
Partly cloudy |
Taipei |
21 |
70 |
24 |
75 |
Sctd. showers |
Partly cloudy |
Naha |
20 |
68 |
22 |
72 |
Mostly cloudy |
Mostly cloudy |
Hanoi |
24 |
75 |
27 |
81 |
Fog/low clouds |
Partly cloudy |
SOUTH
Residents of the Philippines are watching the developments of typhoon NOCK-TEN, also named “Nina” by the Philippines’ state weather agency PAGASA, as it continues to strengthen and move towards the northern half of the archipelago. Storm warning signals have been issued for parts of southeastern Luzon by PAGASA as the storm bears down on the region. For more information on this system, please refer to the “tropics” section of this briefing.
The remainder of the region will enjoy a rather warm, but pleasant, weekend as drier air infiltrates Indochina and clears out the skies, and scattered thunderstorms affect the more southerly locales of Malaysia, Singapore, Brunei, Indonesia, and the southern Philippines.
City |
Sat High
C F
|
Sun High
C F |
Conditions
Sat Sun
|
Siem Reap |
33
|
91 |
33 |
91 |
Mostly fair |
Partly cloudy
|
Ho Chi Minh |
33
|
91 |
32 |
90 |
Mostly fair |
Partly cloudy
|
Manila |
31
|
88 |
31 |
88 |
Partly cloudy |
Partly cloudy
|
Davao City |
32
|
90 |
31 |
88 |
Sctd. t-storms |
Sctd. t-storms
|
Brunei |
32
|
90 |
32 |
90 |
Sctd. t-storms |
Thunderstorms
|
Singapore |
30
|
86 |
31 |
86 |
Thunderstorms |
Sctd. t-storms
|
TROPICS

TAAG, 24 DEC
TYPHOON 30W NOCK-TEN now a typhoon at category 2 strength on the Saffir-Simpson scale…forecasts show southern Luzon landfall during the evening on Christmas…
TYPHOON 30W NOCK-TEN (Nina) continues to strengthen as it moves towards the Philippines. At 5am PST, J.T.W.C placed the center near 13.1N, 129.0E, or about 517km (321mi) east-southeast of Legazpi City, Albay, Philippines. The system is moving west-northwest at 9 knots (17kph).
Latest official forecast tracks bring the system into southern Luzon on Christmas day, while strength estimates on landfall between J.T.W.C. and J.M.A. are a bit different.
J.T.W.C. is showing a system with peak sustained winds of 130kt (241kph) early Christmas morning, a “violent typhoon” on the J.M.A. scale, or, a strong CAT 4 equivalent super-typhoon on the Saffir-Simpson scale, with landfall strength near 110kt (204kph).
J.M.A. is showing a system with peak sustained winds of 100kt (185kph) early Christmas morning, a “very strong typhoon” on the J.M.A. scale, or, a moderate CAT 3 equivalent typhoon on the Saffir-Simpson scale, with landfall strength near 100kt (185kph).

JTWC and JMA forecasts, 24 DEC
PAGASA has issued the following PSWS signals:
SIGNAL #1- Camarines Norte, Camarines Sur, Albay, Catanduanes, Sorsogon and Masbate including Ticao and Burias Islands, Northern Samar and Eastern Samar

PSWS, 24 DEC
Residents of the eastern Philippines, from the northern Visayas to central Luzon, and particularly the Bicol region of Luzon, should have FINISHED initial preparations for a significant weather system, should FINISH secondary preparations and begin FINAL PREPARATIONS for this system today.
Residents of south-central Luzon in Quezon, Laguna, Batangas, Rizal, Cavite, Bataan, Bulacan, Pampanga, and Zambales provinces, including Manila, should be finishing initial preparations today and should begin secondary and final preparations now.
This means stocking up on water and non-perishable foods, LPG for cooking, and planning an evacuation route if you feel it may be necessary. Fuel your vehicles, start bringing in and/or securing any outside objects that can become dangerous wind-driven projectiles. Taping or boarding of windows may be necessary. Buy batteries for flashlights and acquire candles for emergency lighting.
IF YOU LIVE WITHIN 5 KM OF THE EASTERN OR NORTHERN FACING SHORELINES NEAR TO, AND NORTH OF, THE POINT OF LANDFALL IN SOUTHEASTERN LUZON, YOU SHOULD BE PREPARED FOR SIGNIFICANT STORM SURGE AS THIS SYSTEM MOVES IN.
WESTERN FACING SHORES OF WESTERN LUZON SOUTH OF THE PASSAGE OF THE CENTER CAN ALSO EXPECT A SIGNIFICANT STORM SURGE EVENT. THIS INFORMATION WILL NOT BE CLEAR UNTIL THE STORM IS VERY CLOSE DUE TO UNCERTAINTIES IN THE TRACK, THEREFORE, IF YOU LIVE ALONG THESE DESCRIBED SHORELINES, YOU SHOULD EITHER MAKE PREPARATIONS, OF EVACUATE TO INLAND LOCATIONS.
Better preparation is the key, and with the holiday approaching, one may tend to be lax or even discount the threat.
The current official tracks show the system to enter southeastern Luzon at or near Catanduanes Island early in the evening on December 25th, quickly crossing south-central Luzon near Manila, exiting into the South China Sea somewhere between the provinces of Zambales and Cavite in the afternoon of December 26.
However, due to the storm’s proximity to the Bicol peninsula extension of Luzon, effects will start to be felt in that region starting early morning Christmas Day.
Forecasts will change due to the evolving atmospheric conditions, so all areas mentioned previously should monitor the progress of this system.
The remainder of the tropics region will see a warm and mostly wet weekend, as deep tropical moisture gets a lift from the warm afternoon sunshine each day.
City |
Sat High
C F
|
Sun High
C F |
Conditions
Sat Sun
|
Guam |
28
|
82 |
31 |
88 |
Sctd. t-storms |
Partly cloudy
|
Yap |
29
|
84 |
30 |
86 |
Sctd. t-storms |
Sctd. t-storms
|
Palau |
29
|
84 |
29 |
84 |
Sctd. t-storms |
Sctd. t-storms
|
Chuuk |
28
|
82 |
29 |
84 |
Thunderstorms |
Thunderstorms
|
Pohnpei |
28
|
82 |
30 |
86 |
Sctd. t-storms |
Partly cloudy
|
Majuro |
30
|
86 |
28 |
82 |
Sctd t-storms |
Thunderstorms
|
Wake |
27
|
81 |
27 |
81 |
Partly cloudy |
Sctd. showers
|
Have a wonderful weekend and Merry Christmas!
Courtesy: CIMSS, Tropical Tidbits, Intellicast, WUnderground.com, NRL, JMA, JTWC
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