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Automatic Regional Weather Forecast in Hong Kong & Pearl River Delta Region

Local Weather Forecast | Regional Temperature Forecast in HK
9-day Weather Forecast | UV Index Forecast
Weather Information for South China Coastal Waters

Bulletin issued at 11:02 HKT 30/Dec/2018

At 11 a.m. at the Hong Kong Observatory the air temperature was 12 degrees Celsius and the relative humidity 68 per cent.
During the past hour the mean UV Index recorded at King's Park was 3. The intensity of UV radiation was moderate.

Please be reminded that:

The Fire Danger Warning is Yellow and the fire risk is high.
The Cold Weather Warning is now in force. Cold weather might cause adverse health effects. Members of the public should take care to keep warm.

The air temperatures at other places were:

King's Park 12 degrees;
Wong Chuk Hang 12 degrees;
Ta Kwu Ling 11 degrees;
Lau Fau Shan 11 degrees;
Tai Po 12 degrees;
Sha Tin 11 degrees;
Tuen Mun 11 degrees;
Tseung Kwan O 12 degrees;
Sai Kung 10 degrees;
Cheung Chau 13 degrees;
Chek Lap Kok 11 degrees;
Tsing Yi 13 degrees;
Shek Kong 10 degrees;
Tsuen Wan Ho Koon 11 degrees;
Tsuen Wan Shing Mun Valley 12 degrees;
Hong Kong Park 12 degrees;
Shau Kei Wan 14 degrees;
Kowloon City 11 degrees;
Happy Valley 14 degrees;
Wong Tai Sin 12 degrees;
Stanley 13 degrees;
Kwun Tong 12 degrees;
Sham Shui Po 13 degrees;
Kai Tak Runway Park 13 degrees;
Yuen Long Park 10 degrees;
Tai Mei Tuk 12 degrees.


Note: The data above is provisional. Only limited data validation has been carried out.


Climatological Information for 30 Dec


Local Weather Forecast
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Local Weather Forecast

Automatic Regional Weather Forecast in Hong Kong & Pearl River Delta Region

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UV Index Forecast |  Weather Information for South China Coastal Waters

Bulletin updated at 10:45 HKT 30/Dec/2018

Here is the latest weather bulletin issued by the Hong Kong Observatory.

Under the influence of an intense winter monsoon, Hong Kong was cold this morning. The minimum temperature recorded at the Observatory was 10.3 degrees, the lowest so far this winter.

Besides, the tropical depression over the central part of the Philippines has weakened into an area of low pressure.

Weather forecast for today

Mainly cloudy and cold. Dry with bright periods during the day. There will be one or two light rain patches tonight. Moderate to fresh northerly winds, occasionally strong offshore and on high ground.

Outlook : Cold weather will persist and it will be windier in the next few days. A few rain patches midweek this week.


(The above forecast period is valid up to 23:59 HKT today, 30/12/2018; Regular update at : around 45 minutes past each hour, 16:15 HKT and 23:15 HKT)



MARINE FORECAST
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Marine Forecast

Weather Information for the Marine Community

Bulletin issued at 09:00 HKT 30/Dec/2018

STORM WARNING AREAS: BALINTANG AND SCARBOROUGH.
GALE WARNING AREAS: HONG KONG, KWANGTUNG, TAIWAN STRAIT, BASHI, PRATAS, PARACEL, TONKIN AND DANANG.

GENERAL SITUATION AT 292100 UTC:
AN INTENSE NORTHEAST MONSOON IS AFFECTING THE FORECAST AREAS. FOR DETAILS ON TROPICAL DEPRESSION OVER THE PHILIPPINES, PLEASE REFER TO THE 3-HRLY SHIPPING WARNINGS.

MARINE FORECAST FOR 24 HOURS FROM 300100 UTC:

HONG KONG= N TO NE 7-8. LGT RAIN PATCHES. SEA 4-6 M. SWELL NE 2-3 M. TEMP 11-14 C. =
KWANGTUNG= N TO NE 7-8. LGT RAIN PATCHES. SEA 4-6 M. SWELL NE 3-4 M. =
TAIWAN STRAIT= N TO NE 8-9. LGT RAIN PATCHES. SEA 6-8 M. SWELL N TO NE 5 M. =
BASHI= N TO NE 8-9. RAIN PATCHES. SEA 6-8 M. SWELL N TO NE 5 M. =
PRATAS= N TO NE 8, OCNL 9. RAIN PATCHES. SEA UP TO 8 M. SWELL NE 5 M. =
BALINTANG= N TO NE 8-9, OCNL 10. RAIN PATCHES. SEA UP TO 10 M. SWELL N TO NE 5 M. =
SCARBOROUGH= N TO NE 8-9, OCNL 10. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA UP TO 10 M. SWELL NE 5 M. =
PARACEL= N TO NE 7-8, OCNL 9. RAIN PATCHES. SEA UP TO 8 M. SWELL NE 3-5 M. =
TONKIN= N TO NE 7-8. RAIN PATCHES. SEA 4-6 M. SWELL NE 2-3 M. =
DANANG= N TO NE 7-8. RAIN PATCHES. SEA 4-6 M. SWELL NE 3 M. =
NNNN
Abbreviations:
KT, VRB, SLW, FRQ - knot, variable, slow, frequent STNR, QSTNR, C - stationary, quasi-stationary, degrees celsius WKN, INTSF, INTST, NC - weaken, intensify, intensity, no change LGT, ISOL, SCT, OCNL - light, isolated, scattered, occasional CLD, DZ, TS - cloudy, drizzle, thunderstorm

The date and time are specified by a 6-digit number DDHHMM. DD stands for the day of month, HH represents the hour while MM indicates the minute in UTC.



SOUTH CHINA COASTAL WATERS
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South China Coastal Waters

Current Weather | Local Weather Forecast | Regional Temperature Forecast in HK
9-day Weather Forecast | UV Index Forecast | Weather Information for Fishermen

Bulletin issued at 09:30 HKT 30/Dec/2018

Weather information for south China coastal waters issued by the Hong Kong Observatory at 9:30 a.m. on 30 December 2018

Warnings:
Gale force winds in all areas.

Weather Situation:
An intense northeast monsoon is affecting the south China coastal waters.

Area forecasts for the next 24 hours

Hong Kong Adjacent Waters:
North to northeast force 7 to 8.
A few light rain patches.
Rough to very rough seas.

Nan'ao and Shanwei:
North to northeast force 8.
Very rough seas.

South of Hong Kong and Shangchuan Dao:
North to northeast force 7 to 8.
Rough to very rough seas.

Outlook for the next 48 hours
North to northeasterly winds of force 7 to 8.

Latest reports from south China coastal weather stations
--------------------------------------------------------

Waglan Island Wind north force 6
  Visibility 11 Kilometres

Shantou Wind southwest force 1
  Visibility 22 Kilometres

Huangmaozhou Wind north-northeast force 6

Macau Wind north force 4
  Visibility 7 Kilometres

Xisha Wind east-northeast force 3
  Visibility 13 Kilometres


WEATHER FORECAST FOR LOCAL AVIATION
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Weather Forecast for Local Aviation

Bulletin issued at 11:00 HKT 30/DEC/2018
(Next update at 12:30 HKT 30/DEC/2018)
I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     STRONG WINDS AND SEV TURB.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     AN INTENSE NORTHEAST MONSOON IS AFFECTING THE
     SOUTH CHINA COASTAL AREAS.  THE TROPICAL
     DEPRESSION OVER THE CENTRAL PART OF THE
     PHILIPPINES HAS WEAKENED INTO AN AREA OF LOW
     PRESSURE.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1100 TO 2000 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  020/15-20
       OFFSHORE:  020/20-25                            10-14
   B.   2000 FT:  050/20-25                            6
   C.   5000 FT:  150/20                               7
   D.  10000 FT:  230/10                               7
   E.  18000 FT:  250/35                               MS9
   F.  24000 FT:  240/45                               MS16
   G.  30000 FT:  250/55                               MS26
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      1800-4400 FT
   I. WEATHER       : 
      MAINLY CLOUDY WITH A FEW LIGHT RAIN PATCHES.
      BRIGHT PERIODS IN THE AFTERNOON.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 2000 FT  SCT 3000 FT  BKN 6000 FT.
   K. VISIBILITY    : 7 KM. TEMPO 4000 M IN RAIN.
   L. 0 DEG. C LEVEL: 14500 FT      10 DEG. C LEVEL(S) : NEAR SURFACE,7000,7600 FT
   M. TURBULENCE    : MOD TO SEV.
   N. SEA STATE     : 3.0-4.0 M     SEA TEMPERATURE    : 19 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE TO FRESH NORTHERLY WINDS, OCCASIONALLY
     STRONG OFFSHORE AND ON HIGH GROUND. MAINLY
     CLOUDY WITH A FEW LIGHT RAIN PATCHES.=
===================================================================
Note: The forecast could be updated before the next issue time 
whenever there is newly expected occurrence or non-occurrence 
of significant weather as described below which may be hazardous 
to aircraft within 100-km radius of Hong Kong:

(a) Change of the tropical cyclone category
(b) Strong, Gale, Storm, and Hurricane force winds
(c) Thunderstorm/CBs
(d) Severe gusts
(e) Severe turbulence
(f) Significant low stratus
(g) Fog or thick haze/sandstorm/duststorm 
    causing significant reduction of visibility
(h) Volcanic ash
(i) Radioactive cloud
===================================================================
Aviation Weather Observation and Forecast Information for Hong Kong International Airport
To know more about clouds, please see Commonly observed clouds in Hong Kong.


sigmet
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Significant Weather Information (SIGMET)

The Airport Meteorological Office is responsible for monitoring hazardous weather and phenomena in the atmosphere that may affect the safety of aircraft operations within a designated airspace over the northern part of the South China Sea. Weather forecasters at the Airport Meteorological Office issues SIGMET information when hazardous weather and phenomena in the atmosphere such as thunderstorms, tropical cyclones, turbulence, icing occur or are expected to occur in the airspace.

There is no Significant Weather Information (SIGMET)

Please click here for more about the SIGMET


Tropical Cyclone Warning
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Tropical Cyclone Warning

There is no tropical cyclone warning signal.

For other tropical cyclone related information, please visit the World Meteorological Organization Web Site - Severe Weather Information Centre.


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Last revision date: <30 Dec 2018> 

TROPICAL CYCLONE WARNING FOR SHIPPING
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Tropical Cyclone Warning for Shipping

Tropical Cyclone Warning |  Track and Positions of Tropical Cyclones
Current Weather |  Local Weather Forecast |  9-day Weather Forecast
South China Coastal Waters |  Marine Forecast
Severe Weather Information Centre

Bulletin issued at 06:30 HKT 30/Dec/2018


Tropical Cyclone Warning

At 292100 UTC, the tropical depression over the Philippines with central pressure 1002 hectopascals was centred within 90 nautical miles of nine point four degrees north (9.4 N) one one nine point two degrees east (119.2 E) and is forecast to move west-southwest at about 16 knots for the next 24 hours.

Maximum winds near the centre are estimated to be 25 knots.

Radius of over 2 metre waves 60 nautical miles.

No further warnings on this Tropical Depression will be issued by the Hong Kong Observatory unless it re-enters the Hong Kong area of responsibility.

Forecast position and intensity at 302100 UTC
Seven point six degrees north (7.6 N)
One one three point zero degrees east (113.0 E)
Maximum winds 25 knots.

Forecast position and intensity at 312100 UTC
Six point one degrees north (6.1 N)
One one zero point one degrees east (110.1 E)
Maximum winds 25 knots.

Forecast position and intensity at 012100 UTC
Six point zero degrees north (6.0 N)
One zero seven point six degrees east (107.6 E)
Maximum winds 30 knots.

Forecast position and intensity at 022100 UTC
Six point six degrees north (6.6 N)
One zero four point four degrees east (104.4 E)
Maximum winds 30 knots.

Forecast position and intensity at 032100 UTC
Eight point four degrees north (8.4 N)
One zero zero point five degrees east (100.5 E)
Maximum winds 35 knots.




The Hong Kong Observatory's tropical cyclone warnings for shipping are issued about one and a half hours after the time of observation. They incorporate additional information derived from surface and upper-air data and may therefore be slightly different from the real-time satellite or radar-based positions given in the hourly bulletins for public.

While the forecast positions and track indicate the most likely future path of the tropical cyclone, they may deviate from the actual path taken by the storm.

Tropical Cyclone Track

YESTERDAY'S WEATHER AND RADIATION LEVEL Skip to main content
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Yesterday's Weather and Radiation Level

Bulletin issued at 00:15 HKT 30/Dec/2018
HKO Readings & Radiation Level

Yesterday's Weather and Radiation Level:
------------------------------------------------------

Hong Kong Observatory
Maximum Air Temperature                     16.3 C
Minimum Air Temperature                     12.5 C
Grass Minimum Temperature                   13.4 C
Relative Humidity                        60 - 72 Percent
Rainfall                                      Trace 
Total rainfall since 1st January          2162.9 mm
Against an average of                     2393.9 mm

Other Stations                Min                  Max
King's Park                  11.5 C               15.3 C
Wong Chuk Hang               12.2 C               16.4 C
Ta Kwu Ling                   9.6 C               14.6 C
Lau Fau Shan                  9.9 C               14.0 C
Tai Po                       10.1 C               16.3 C
Sha Tin                      11.4 C               15.7 C
Tuen Mun                     10.9 C               15.0 C
Tseung Kwan O                11.1 C               15.1 C
Sai Kung                     11.2 C               14.6 C
Cheung Chau                  11.3 C               16.2 C
Chek Lap Kok                 11.4 C               16.0 C
Tsing Yi                     12.1 C               15.9 C
Shek Kong                    10.0 C               14.7 C
Tsuen Wan Ho Koon             9.6 C               14.2 C
Tsuen Wan Shing Mun Valley   11.1 C               16.8 C
Hong Kong Park               12.3 C               16.1 C
Shau Kei Wan                 11.7 C               15.6 C
Kowloon City                 11.1 C               15.0 C
Happy Valley                 12.5 C               16.7 C
Wong Tai Sin                 11.7 C               16.1 C
Stanley                      12.1 C               15.7 C
Kwun Tong                    11.0 C               15.3 C
Sham Shui Po                 11.4 C               16.4 C
Kai Tak Runway Park          12.5 C               16.1 C
Yuen Long Park                9.9 C               14.3 C
Tai Mei Tuk               10.7 C               16.9 C

Duration of sunshine (King's Park):              0.6 H
The mean UV index recorded at King's Park yesterday was 2,
the UV intensity was Low.
The maximum UV index for yesterday was 5.
 

Yesterday's (29 Dec 2018) average ambient gamma radiation
dose rate taken outdoors in Hong Kong ranged from 0.09 to
0.15 microsievert per hour.  These are within the normal
range of fluctuation of the background radiation level in
Hong Kong (see Note). The average dose rates measured at the
radiation monitoring stations over various parts of the
territory were as follows :

Station                     Yesterday's average
                            (microsievert/hour)
Ping Chau                           0.09
Tap Mun                             0.09
Kat O                               0.10
Yuen Ng Fan                         0.12
Tai Mei Tuk                         0.12
Sha Tau Kok                         0.10
Kwun Tong                           0.13
Sai Wan Ho                          0.10
King's Park                         0.15
Tsim Bei Tsui                       0.13
Cape D'Aguilar                      0.13
Chek Lap Kok                        0.15

Note
  1. From readings taken at various locations in Hong Kong in the past, the hourly mean ambient gamma radiation dose rate may vary between 0.06 and 0.3 microsievert per hour. (1 microsievert = 0.000001 sievert = 0.001 millisievert)
  2. Temporal variations are generally caused by changes in meteorological conditions such as rainfall, wind and barometric pressure.
  3. Spatial variations are generally caused by differences in the radioactive content of local rock and soil.
  4. The data displayed is provisional. Only limited data validation has been carried out.
Climatological Information for 29 Dec
Last revision date: <30 Dec 2018> 

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