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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 23:02 HKT 10/Jan/2018

At 11 p.m. at the Hong Kong Observatory the air temperature was 13 degrees Celsius and the relative humidity 48 per cent.

Please be reminded that:

The Fire Danger Warning is Red and the fire risk is extreme.
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 13 degrees;
Wong Chuk Hang 14 degrees;
Ta Kwu Ling 13 degrees;
Lau Fau Shan 13 degrees;
Tai Po 14 degrees;
Sha Tin 14 degrees;
Tuen Mun 13 degrees;
Tseung Kwan O 12 degrees;
Sai Kung 14 degrees;
Cheung Chau 12 degrees;
Chek Lap Kok 14 degrees;
Tsing Yi 13 degrees;
Shek Kong 13 degrees;
Tsuen Wan Ho Koon 12 degrees;
Tsuen Wan Shing Mun Valley 13 degrees;
Hong Kong Park 13 degrees;
Shau Kei Wan 13 degrees;
Kowloon City 13 degrees;
Happy Valley 14 degrees;
Wong Tai Sin 13 degrees;
Stanley 13 degrees;
Kwun Tong 12 degrees;
Sham Shui Po 13 degrees;
Kai Tak Runway Park 14 degrees;
Yuen Long Park 13 degrees;
Tai Mei Tuk 13 degrees.


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


Climatological Information for 10 Jan


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 23:15 HKT 10/Jan/2018

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

A dry winter monsoon affected southern China today. Locally, it was cold this morning and very dry with sunny intervals during the day. The relative humidity over the territory generally stayed at 40 per cent or below in the afternoon. The winter monsoon will continue to bring cold and dry weather to southern China in the next couple of days.

Weather forecast for Hong Kong (Thursday, 11 Jan 2018)

It will be dry. Cold and cloudy with one or two light rain patches in the morning. The minimum temperature will be about 12 degrees in the urban areas, and a couple of degrees lower in the New Territories. Mainly fine during the day with a maximum temperature of around 16 degrees. Moderate north to northeasterly winds, fresh at times.

Outlook : Fine and dry on Friday but still cold in the morning. Temperatures rising gradually over the weekend.


(The above forecast period is valid up to 23:59 HKT tomorrow, 11/01/2018; 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 21:00 HKT 10/Jan/2018

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

GENERAL SITUATION AT 100900 UTC:
AN INTENSE NORTHEAST MONSOON IS AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 101300 UTC:

HONG KONG= N TO NE 5-6. FINE. SEA 2-3 M. SWELL NE UP TO 2 M. TEMP 11-16 C. =
KWANGTUNG= NE 6-7, 8 IN E. FINE. SEA 3-4 M, 6 M IN E. SWELL NE 2-3 M. =
TAIWAN STRAIT= NE 7-8. RAIN PATCHES. SEA 4-6 M. SWELL NE 2-3 M. =
BASHI= NE 7-8. RAIN PATCHES. SEA 4-6 M. SWELL NE 2-3 M. =
PRATAS= NE 7-8. RAIN PATCHES. SEA 4-6 M. SWELL NE 2-3 M. =
BALINTANG= NE 7-8. RAIN PATCHES. SEA 4-6 M. SWELL NE 2-3 M. =
SCARBOROUGH= NE 7-8. RAIN PATCHES. SEA 4-6 M. SWELL NE 2-3 M. =
PARACEL= NE 7-8. RAIN PATCHES. SEA 4-6 M. SWELL NE 2-3 M. =
TONKIN= N TO NE 6-7. RAIN PATCHES. SEA 3-4 M. SWELL NE 2 M. =
DANANG= N TO NE 7-8. RAIN PATCHES. SEA 4-6 M. SWELL NE 2-3 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 23:30 HKT 10/Jan/2018

Weather information for south China coastal waters issued by the Hong Kong Observatory at 11:30 p.m. on 10 January 2018

Warnings:
Gale force winds in Nan'ao, Shanwei and south of Hong Kong. Strong winds in Hong Kong adjacent waters and Shangchuan Dao.

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

Area forecasts for the next 24 hours

Hong Kong Adjacent Waters:
North to northeast force 5 to 6.
One or two light rain patches at first.
Moderate to rough seas.

Nan'ao, Shanwei and South of Hong Kong:
Northeast force 7 to 8.
Rough to very rough seas.

Shangchuan Dao:
Northeast force 6 to 7.
Rough seas.

Outlook for the next 48 hours
Northeasterly winds of force 6 to 7, becoming easterly winds up to force 8.

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

Waglan Island Wind north force 4
  Visibility 36 Kilometres

Shantou Wind east-northeast force 1
  Visibility 22 Kilometres

Dongsha Wind northeast force 5
  Visibility 10 Kilometres

Huangmaozhou Wind north-northeast force 5

Macau Wind north force 3
  Visibility 19 Kilometres

Xisha Wind northeast force 4
  Visibility 7 Kilometres


WEATHER FORECAST FOR LOCAL AVIATION
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Weather Forecast for Local Aviation

Bulletin issued at 17:30 HKT 10/JAN/2018
(Next update at 01:30 HKT 11/JAN/2018)
I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     STRONG WINDS AND SEV TURB.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     THE NORTHEAST MONSOON IS AFFECTING THE SOUTH
     CHINA COASTAL AREAS.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1800 TO 0400 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  010/10-15
       OFFSHORE:  010/15-20, OCNL 25                   14-10
   B.   2000 FT:  030/20-25                            8
   C.   5000 FT:  060/15                               7
   D.  10000 FT:  270/30                               2
   E.  18000 FT:  280/65                               MS5
   F.  24000 FT:  290/80                               MS14
   G.  30000 FT:  290/80                               MS30
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      4500 - 5000 FT.
   I. WEATHER       : 
      CLOUDY.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 4000 FT  BKN 8000 FT.
   K. VISIBILITY    : 10 KM.
   L. 0 DEG. C LEVEL: 12000 FT
      10 DEG. C LEVEL(S) : NEAR SURFACE
   M. TURBULENCE    : MOD TO SEV.
   N. SEA STATE     : 2.0-3.0 M     SEA TEMPERATURE    : 17 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE NORTH TO NORTHEASTERLY WINDS, FRESH AT
     TIMES.  CLOUDY IN THE MORNING.  MAINLY FINE
     DURING THE DAY.=
===================================================================
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.

The latest significant weather information
issued by the Hong Kong Observatory at 20:11 HKT on 01 Dec 17

VHHK SIGMET 4 VALID 010820/011220 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N1642 E11400 - N1736 E11312 - N1812 E11512 - N1642 E11400 TOP FL450 MOV W 05KT NC= VHHK SIGMET 5 VALID 011220/011620 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N1806 E11506 - N1642 E11400 - N1712 E11330 - N1818 E11448 - N1806 E11506 TOP FL420 MOV W 05KT WKN=

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: <06 Jan 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 15:30 HKT 04/Jan/2018


Tropical Cyclone Warning

At 040600 UTC, Tropical Depression Bolaven (1801) has weakened into an area of low pressure.

No further warnings on this area of low pressure will be issued by the Hong Kong Observatory unless regeneration takes place.




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 10/Jan/2018
HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     10.7 C
Minimum Air Temperature                      7.9 C
Grass Minimum Temperature                    9.3 C
Relative Humidity                        59 - 97 Percent
Rainfall                                     9.9 mm 
Total rainfall since 1st January            41.8 mm
Against an average of                        6.7 mm

Other Stations                Min                  Max
King's Park                   7.0 C               10.6 C
Wong Chuk Hang                8.3 C               11.2 C
Ta Kwu Ling                   5.5 C               10.2 C
Lau Fau Shan                  6.2 C               10.0 C
Tai Po                        6.5 C               9.8 C
Sha Tin                       6.8 C               11.0 C
Tuen Mun                      6.7 C               10.5 C
Tseung Kwan O                 7.2 C               9.9 C
Sai Kung                      6.7 C               10.9 C
Cheung Chau                   6.7 C               9.5 C
Chek Lap Kok                  7.4 C               11.5 C
Tsing Yi                      6.9 C               10.6 C
Shek Kong                     6.2 C               10.2 C
Tsuen Wan Ho Koon             5.3 C               9.3 C
Tsuen Wan Shing Mun Valley    7.2 C               10.6 C
Hong Kong Park                7.7 C               11.1 C
Shau Kei Wan                  7.3 C               10.9 C
Kowloon City                  6.6 C               10.3 C
Happy Valley                  8.2 C               11.7 C
Wong Tai Sin                  6.8 C               10.7 C
Stanley                       8.4 C               11.4 C
Kwun Tong                     7.4 C               10.2 C
Sham Shui Po                  7.6 C               11.1 C
Kai Tak Runway Park           8.2 C               11.8 C
Yuen Long Park                6.0 C               10.2 C
Tai Mei Tuk                6.4 C               10.4 C

Duration of sunshine (King's Park):              0.0 H
The mean UV index recorded at King's Park yesterday was 0.6,
the UV intensity was Low.
The maximum UV index for yesterday was 2.
Sea surface temperature (Waglan Island):        17.2 C 

Yesterday's (09 Jan 2018) average ambient gamma radiation
dose rate taken outdoors in Hong Kong ranged from 0.08 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                           0.08
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                           0.12
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 during the period 1987-2016, the background ambient gamma radiation levels may vary between 0.06 and 0.30 microsievert per hour.
  2. The extent of health effects to a person as a result of exposure to radiation is expressed by a physical quantity called equivalent dose, in unit of sievert. Protective action may be required if there is an increase in the ambient gamma dose rate above background such that the total additional dose is expected to exceed 5000 microsieverts in a relatively short period of time. For example, a dose of 5000 microsieverts may be reached when the ambient gamma dose rate is 1000 microsieverts per hour (several thousand times above background) and lasts for 5 hours.
  3. The readings of ambient gamma radiation level from instrument are expressed in unit of gray, which is numerically equal to the gamma dose expressed in sievert.
Climatological Information for 09 Jan
Last revision date: <10 Jan 2018> 

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