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

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9-day Weather Forecast | UV Index Forecast
Weather Information for South China Coastal Waters

Bulletin issued at 12:36 HKT 15/Jul/2018

At noon at the Hong Kong Observatory the air temperature was 26 degrees Celsius and the relative humidity 92 per cent.
During the past hour the mean UV Index recorded at King's Park was 2. The intensity of UV radiation was low.

Gusts reaching 70 kilometres per hour or above may continue to affect Hong Kong.

Strong winds are expected from the east. People engaging in outdoor work or activities should be particularly aware of strong gusts. The public should beware of the possible danger brought by rough seas.

Please be reminded that:

The Amber Rainstorm Warning Signal was issued at 12:35 p.m.
The Thunderstorm Warning has been issued. It will remain effective until 2:30 p.m. today. A few squally thunderstorms are expected to occur over Hong Kong.
The Strong Monsoon Signal has been issued.

The air temperatures at other places were:

King's Park 26 degrees;
Wong Chuk Hang 25 degrees;
Ta Kwu Ling 27 degrees;
Lau Fau Shan 25 degrees;
Tai Po 26 degrees;
Sha Tin 28 degrees;
Tuen Mun 27 degrees;
Tseung Kwan O 25 degrees;
Sai Kung 27 degrees;
Cheung Chau 24 degrees;
Chek Lap Kok 27 degrees;
Tsing Yi 27 degrees;
Shek Kong 26 degrees;
Tsuen Wan Ho Koon 25 degrees;
Tsuen Wan Shing Mun Valley 25 degrees;
Hong Kong Park 25 degrees;
Shau Kei Wan 24 degrees;
Kowloon City 26 degrees;
Happy Valley 26 degrees;
Wong Tai Sin 26 degrees;
Stanley 25 degrees;
Kwun Tong 26 degrees;
Sham Shui Po 27 degrees;
Kai Tak Runway Park 27 degrees;
Yuen Long Park 26 degrees;
Tai Mei Tuk 26 degrees.

Between 10:45 and 11:45 a.m., the rainfall recorded in various regions were:

Eastern District 4 to 12 mm;
Wong Tai Sin 6 to 9 mm;
Tai Po 0 to 8 mm;
Central & Western District 0 to 8 mm;
Wan Chai 5 to 8 mm;
Sai Kung 1 to 8 mm;
Islands District 0 to 7 mm;
Sha Tin 1 to 7 mm;
Southern District 1 to 6 mm;
Tsuen Wan 1 to 6 mm;
Yuen Long 0 to 6 mm;
Kwun Tong 2 to 3 mm;
Kowloon City 1 to 3 mm;
North District 0 to 3 mm;
Kwai Tsing 1 to 3 mm;
Tuen Mun 1 to 2 mm;
Sham Shui Po 1 mm;
Yau Tsim Mong 1 mm.

10.1 millimetres of rainfall were recorded at the Hong Kong Observatory between midnight last night and midday today.


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


Climatological Information for 15 Jul


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 12:15 HKT 15/Jul/2018

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

An intense easterly airstream is affecting the south China coast. Meanwhile, a broad trough of low pressure is bringing thundery showers to the coast of Guangdong and the northern part of the South China Sea.

Weather forecast for this afternoon and tonight

Cloudy with squally showers. Showers will be heavy at times with a few thunderstorms. Fresh east to southeasterly winds, strong offshore, occasionally gale on high ground.

Outlook : Still showery at first tomorrow. Sunny periods in the following couple of days.


(The above forecast period is valid up to 23:59 HKT today, 15/07/2018; 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 15/Jul/2018

GALE WARNING AREAS: HONG KONG, KWANGTUNG, BASHI, PRATAS AND BALINTANG.

GENERAL SITUATION AT 142100 UTC:
AN INTENSE EASTERLY AIRSTREAM IS GENERALLY AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 150100 UTC:

HONG KONG= E TO SE 6-7, OCNL 8. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA UP TO 6 M. SWELL E TO SE 2 M. TEMP 29-26 C. =
KWANGTUNG= E TO SE 6-7, OCNL 8. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA UP TO 6 M. SWELL E TO SE 2-3 M, SW 2 M. =
TAIWAN STRAIT= NE 6-7. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 3-4 M. SWELL E TO SE 2 M, SW 2 M. =
BASHI= E TO SE 6-7, OCNL 8. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA UP TO 6 M. SWELL E TO SE 2-3 M, SW 2 M. =
PRATAS= E TO SE 6-7, OCNL 8. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA UP TO 6 M. SWELL E TO SE 2-3 M, SW 2 M. =
BALINTANG= E TO SE 6-7, OCNL 8. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA UP TO 6 M. SWELL E TO SE 2-3 M, SW 2 M. =
SCARBOROUGH= S TO SE 5-6, OCNL 7. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA UP TO 4 M. SWELL SW 2-3 M. =
PARACEL= S TO SW 5-6, OCNL 7. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA UP TO 4 M. SWELL SW 2-3 M, E TO SE 2 M. =
TONKIN= E TO NE 5-6, OCNL 7. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA UP TO 4 M. =
DANANG= SW 6-7. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 3-4 M. SWELL S TO SW 2 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 12:30 HKT 15/Jul/2018

Weather information for south China coastal waters issued by the Hong Kong Observatory at 12:30 p.m. on 15 July 2018

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

Weather Situation:
An intense easterly airstream is affecting the south China coastal waters. Meanwhile, a broad trough of low pressure is bringing unsettled weather to the region.

Area forecasts for the next 24 hours

Hong Kong Adjacent Waters:
East to southeast force 6 to 7, occasionally force 8.
Scattered heavy squally showers and thunderstorms.
Rough to very rough seas.

Nan'ao, Shanwei and South of Hong Kong:
East to southeast force 6 to 7, occasionally force 8.
Scattered squally showers and thunderstorms.
Rough to very rough seas.

Shangchuan Dao:
East to southeast force 6 to 7.
Scattered squally showers and thunderstorms.
Rough seas.

Outlook for the next 48 hours
Easterly winds of force 6 to 7. Scattered squally showers and thunderstorms.

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

Waglan Island Wind east-southeast force 6
  Visibility 13 Kilometres

Shantou Wind east-northeast force 2
  Visibility 30 Kilometres

Dongsha Wind east force 4
  Visibility 10 Kilometres

Huangmaozhou Wind southeast force 6

Macau Wind east force 4
  Visibility 12 Kilometres

Xisha Wind west-northwest force 2
  Visibility 27 Kilometres


WEATHER FORECAST FOR LOCAL AVIATION
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Weather Forecast for Local Aviation

Bulletin issued at 12:30 HKT 15/JUL/2018
(Next update at 17:30 HKT 15/JUL/2018)
I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     SEV TURB AND SEV GUSTS.  GALE FORCE WINDS. 
     ISOL CUNIM/TS AND ASSOCIATED HAZARDS.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     A BROAD TROUGH OF LOW PRESSURE IS BRINGING
     UNSETTLED WEATHER TO THE SOUTH CHINA COASTAL
     AREAS. MEANWHILE, AN EASTERLY AIRSTREAM IS
     AFFECTING THE SOUTH CHINA COAST AREAS.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1300 TO 2300 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  100/15-20
                  TEMPO VRB/25G35 IN TS
       OFFSHORE:  100/25-30G40                         29-27
   B.   2000 FT:  100/35G40                            23
   C.   5000 FT:  110/35                               18
   D.  10000 FT:  120/30                               12
   E.  18000 FT:  090/25                               MS2
   F.  24000 FT:  120/15                               MS12
   G.  30000 FT:  160/15                               MS23
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      CLOUDY WITH SQUALLY SHOWERS AND A FEW
      THUNDERSTORMS.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1200 FT  SCT 2500 FT.  TEMPO FEW CB 800 FT
      SCT 1500 FT  BKN 3000 FT.
   K. VISIBILITY    : 9 KM.  TEMPO 3000 M IN SHOWERS.  TEMPO 2000 M IN TS.
   L. 0 DEG. C LEVEL: 17000 FT      10 DEG. C LEVEL(S) : 12200 FT
   M. TURBULENCE    : MOD TO SEV
   N. SEA STATE     : 3.0-4.0 M     SEA TEMPERATURE    : 27 DEG
IV.  FURTHER OUTLOOK: 
     FRESH EAST TO SOUTHEASTERLY WINDS, STRONG
     OFFSHORE AND ON HIGH GROUND.  CLOUDY WITH
     SHOWERS AND ISOLATED SQUALLY THUNDERSTORMS.=
===================================================================
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 09:55 HKT on 15 Jul 18

VHHK SIGMET 1 VALID 150155/150555 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N2036 E11712 - N1754 E11500 - N2036 E11142 - N2036 E11130 - N2130 E11130 - N2230 E11400 - N2036 E11712 TOP FL440 MOV NW 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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Last revision date: <13 Jul 2018> 

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 00:15 HKT 15/Jul/2018
HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     29.5 C
Minimum Air Temperature                     25.3 C
Grass Minimum Temperature                   24.7 C
Relative Humidity                        82 - 97 Percent
Rainfall                                    52.7 mm 
Total rainfall since 1st January           800.6 mm
Against an average of                     1246.9 mm

Other Stations                Min                  Max
King's Park                  25.0 C               29.3 C
Wong Chuk Hang               25.4 C               29.1 C
Ta Kwu Ling                  24.9 C               31.2 C
Lau Fau Shan                 24.4 C               29.3 C
Tai Po                       25.1 C               29.5 C
Sha Tin                      25.9 C               30.2 C
Tuen Mun                     25.2 C               29.4 C
Tseung Kwan O                24.8 C               29.1 C
Sai Kung                     25.6 C               29.8 C
Cheung Chau                  24.6 C               27.4 C
Chek Lap Kok                 25.4 C               29.6 C
Tsing Yi                     25.2 C               30.3 C
Shek Kong                    25.3 C               29.9 C
Tsuen Wan Ho Koon            24.1 C               27.2 C
Tsuen Wan Shing Mun Valley   25.0 C               29.1 C
Hong Kong Park               24.9 C               28.7 C
Shau Kei Wan                 24.3 C               29.2 C
Kowloon City                 25.0 C               29.6 C
Happy Valley                 26.0 C               30.2 C
Wong Tai Sin                 25.3 C               29.4 C
Stanley                      25.4 C               29.5 C
Kwun Tong                    25.2 C               29.3 C
Sham Shui Po                 25.4 C               30.6 C
Kai Tak Runway Park          25.2 C               29.6 C
Yuen Long Park               24.6 C               30.0 C
Tai Mei Tuk               24.5 C               29.7 C

Duration of sunshine (King's Park):              0.8 H
The mean UV index recorded at King's Park yesterday was 3,
the UV intensity was Moderate.
The maximum UV index for yesterday was 9.
Sea surface temperature (Waglan Island):        27.6 C 

Yesterday's (14 Jul 2018) average ambient gamma radiation
dose rate taken outdoors in Hong Kong ranged from 0.08 to
0.14 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                             0.08
Kat O                               0.10
Yuen Ng Fan                         0.12
Tai Mei Tuk                         0.11
Sha Tau Kok                         0.10
Kwun Tong                           0.12
Sai Wan Ho                          0.09
King's Park                         0.14
Tsim Bei Tsui                       0.12
Cape D'Aguilar                      0.12
Chek Lap Kok                        0.13

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 14 Jul
Last revision date: <15 Jul 2018> 

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