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Bulletin issued at 23:02 HKT 05/Feb/2018

At 11 p.m. at the Hong Kong Observatory the air temperature was 11 degrees Celsius and the relative humidity 38 per cent.

Please be reminded that:

The Frost Warning has been issued.
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 10 degrees;
Wong Chuk Hang 10 degrees;
Ta Kwu Ling 5 degrees;
Lau Fau Shan 7 degrees;
Tai Po 9 degrees;
Sha Tin 11 degrees;
Tuen Mun 8 degrees;
Sai Kung 10 degrees;
Cheung Chau 8 degrees;
Chek Lap Kok 11 degrees;
Tsing Yi 10 degrees;
Shek Kong 6 degrees;
Tsuen Wan Ho Koon 8 degrees;
Tsuen Wan Shing Mun Valley 7 degrees;
Hong Kong Park 10 degrees;
Shau Kei Wan 10 degrees;
Kowloon City 10 degrees;
Happy Valley 11 degrees;
Wong Tai Sin 10 degrees;
Stanley 10 degrees;
Kwun Tong 9 degrees;
Sham Shui Po 9 degrees;
Kai Tak Runway Park 11 degrees;
Yuen Long Park 8 degrees;
Tai Mei Tuk 10 degrees.


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


Climatological Information for 5 Feb

Regional Weather in Hong Kong

Information on Tropical Cyclones

Hong Kong Climatology


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Bulletin updated at 23:15 HKT 05/Feb/2018

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

The winter monsoon continued to affect the south China coastal areas today. Locally, it was cloudy at first and became mainly fine gradually in the afternoon. The weather was cold and dry. Temperatures over the territory generally fell to seven or eight degrees in the morning. The winter monsoon is expected to persist in the next couple of days. It will be cold, mainly fine and dry over southern China.

Weather forecast for Hong Kong (Tuesday, 6 Feb 2018)

Mainly fine and cold. The minimum temperature in the morning will be about 8 degrees in the urban areas, and a few degrees lower in the New Territories. Very dry during the day with a maximum temperature of around 13 degrees. Moderate northeasterly winds.

Outlook : Dry on Wednesday and Thursday with cold mornings. Daytime temperatures rising in the latter part of this week.


(The above forecast period is valid up to 23:59 HKT tomorrow, 06/02/2018; Regular update at : around 45 minutes past each hour, 16:15 HKT and 23:15 HKT)

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MARINE FORECAST
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Marine Forecast

Weather Information for the Marine Community

Bulletin issued at 21:00 HKT 05/Feb/2018

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

GENERAL SITUATION AT 050900 UTC:
AN INTENSE NORTHEAST MONSOON PERSISTS OVER THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 051300 UTC:

HONG KONG= NE 4-5, OCNL 6. FINE. SEA UP TO 3 M. SWELL NE 2 M. TEMP 8-13 C. =
KWANGTUNG= NE 5-6, 7 IN E. FINE. SEA 2-3 M, 4 M IN E. SWELL N TO NE 2-3 M. =
TAIWAN STRAIT= NE 7-8. FINE. SEA 4-6 M. SWELL N TO NE 3-4 M. =
BASHI= NE 7-8. RAIN PATCHES. SEA 4-6 M. SWELL N TO NE 3-4 M. =
PRATAS= NE 6-7, OCNL 8. RAIN PATCHES. SEA UP TO 6 M. SWELL N TO NE 3 M. =
BALINTANG= NE 7-8. RAIN PATCHES. SEA 4-6 M. SWELL N TO NE 3-4 M. =
SCARBOROUGH= N TO NE 7-8. RAIN PATCHES. SEA 4-6 M. SWELL N TO NE 3-4 M. =
PARACEL= N TO NE 6-7, OCNL 8. RAIN PATCHES. SEA UP TO 6 M. SWELL N TO NE 3 M. =
TONKIN= N TO NE 5-6. CLD. SEA 2-3 M. SWELL N TO NE 2-3 M. =
DANANG= N TO NE 6-7. RAIN PATCHES. SEA 3-4 M. SWELL N TO 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.


  • Map showing the 10 forecast areas
  • Tidal Information

    • 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 05/Feb/2018

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 11:30 p.m. on 05 February 2018

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

    Weather Situation:
    An intense northeast monsoon persists over the south China coastal waters.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    Northeast force 4 to 5, occasionally force 6.
    Moderate to rough seas.

    Nan'ao:
    Northeast force 7 to 8.
    Rough to very rough seas.

    Shanwei:
    Northeast force 6 to 7.
    Rough seas.

    South of Hong Kong and Shangchuan Dao:
    Northeast force 5 to 6.
    Moderate to rough seas.

    Outlook for the next 48 hours
    East to northeasterly winds of force 6 to 7.

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

    Waglan Island Wind north force 5
      Visibility 18 Kilometres

    Shantou Wind northeast force 2
      Visibility 9 Kilometres

    Dongsha Wind north-northeast force 5
      Visibility 10 Kilometres

    Huangmaozhou Wind northeast force 5

    Macau Wind north force 2
      Visibility 14 Kilometres

    Xisha Wind north-northeast force 4
      Visibility 11 Kilometres

  • Explanation of Seas or Sea Waves
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    • WEATHER FORECAST FOR LOCAL AVIATION
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    Weather Forecast for Local Aviation

    Bulletin issued at 17:30 HKT 05/FEB/2018
    (Next update at 01:30 HKT 06/FEB/2018)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     STRONG WINDS AND SEV TURB.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     THE INTENSE NORTHEAST MONSOON PERSISTS OVER 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
       OFFSHORE:  010/15-20                            11-7
   B.   2000 FT:  030/15-20, OCNL 25                   4
   C.   5000 FT:  040/15                               1
   D.  10000 FT:  300/20                               0
   E.  18000 FT:  280/65                               MS11
   F.  24000 FT:  280/90                               MS20
   G.  30000 FT:  290/110                              MS29
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      MAINLY CLOUDY BECOMING MAINLY FINE
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 4500 FT.
   K. VISIBILITY    : 8 KM.
   L. 0 DEG. C LEVEL: 10000 FT      10 DEG. C LEVEL(S) : NEAR SURFACE
   M. TURBULENCE    : MOD TO SEV NEAR HILLS.  MOD OFFSHORE.
   N. SEA STATE     : 2.0-2.5 M     SEA TEMPERATURE    : 15 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE NORTHEASTERLY WINDS. MAINLY FINE.=

    ===================================================================
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 10:43 HKT on 05 Feb 18

    VHHK SIGMET 1 VALID 050245/050645 VHHH- VHHK HONG KONG FIR SEV ICE FCST N OF N21 FL060/140 MOV E 10KT NC=

    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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    TROPICAL CYCLONE WARNING FOR SHIPPING
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    Tropical Cyclone Warning for Shipping

    There is no tropical cyclone warning for shipping*.




    *Tropical cyclone warnings for shipping are issued by the Hong Kong Observatory for tropical cyclones located within the area bounded by 105E and 125E , 10N and 30N.




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

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

    Bulletin issued at 10:35 HKT 05/Feb/2018 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     11.7 C
Minimum Air Temperature                      9.1 C
Grass Minimum Temperature                    9.3 C
Relative Humidity                        44 - 55 Percent
Rainfall                                       0 mm 
Total rainfall since 1st January            62.2 mm
Against an average of                       28.4 mm

Other Stations                Min                  Max
King's Park                   8.5 C               11.6 C
Wong Chuk Hang                9.2 C               12.2 C
Ta Kwu Ling                   6.1 C               10.9 C
Lau Fau Shan                  7.4 C               10.7 C
Tai Po                        7.5 C               10.9 C
Sha Tin                       8.1 C               11.7 C
Tuen Mun                      8.2 C               11.1 C
Sai Kung                      8.4 C               10.8 C
Cheung Chau                   8.3 C               11.2 C
Chek Lap Kok                  8.8 C               12.3 C
Tsing Yi                      8.6 C               11.7 C
Shek Kong                     7.7 C               11.3 C
Tsuen Wan Ho Koon             6.6 C               10.2 C
Tsuen Wan Shing Mun Valley    8.2 C               12.6 C
Hong Kong Park                9.0 C               12.0 C
Shau Kei Wan                  8.6 C               12.5 C
Kowloon City                  8.0 C               11.7 C
Happy Valley                  9.5 C               12.3 C
Wong Tai Sin                  8.2 C               11.7 C
Stanley                       9.3 C               11.9 C
Kwun Tong                     8.3 C               11.3 C
Sham Shui Po                  9.0 C               12.3 C
Kai Tak Runway Park           9.2 C               12.4 C
Yuen Long Park                7.5 C               11.1 C
Tai Mei Tuk                7.7 C               12.1 C

Duration of sunshine (King's Park):              0 H
The mean UV index recorded at King's Park yesterday was 1,
the UV intensity was Low.
The maximum UV index for yesterday was 3.
Sea surface temperature (Waglan Island):        15.1 C 

Yesterday's (04 Feb 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                          0.09
King's Park                         0.14
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 04 Feb
     2003copy right image | Important notices | Privacy policy Last revision date: <05 Feb 2018> 

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