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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 10:02 HKT 16/Jul/2018

At 10 a.m. at the Hong Kong Observatory the air temperature was 26 degrees Celsius and the relative humidity 93 per cent.
During the past hour the mean UV Index recorded at King's Park was 3. The intensity of UV radiation was moderate.

Strong winds are expected from the east. The public should beware of the possible danger brought by rough seas.

Please be reminded that:

The Strong Monsoon Signal has been issued.

The air temperatures at other places were:

King's Park 26 degrees;
Wong Chuk Hang 27 degrees;
Ta Kwu Ling 29 degrees;
Lau Fau Shan 28 degrees;
Tai Po 27 degrees;
Sha Tin 27 degrees;
Tuen Mun 29 degrees;
Tseung Kwan O 26 degrees;
Sai Kung 27 degrees;
Cheung Chau 27 degrees;
Chek Lap Kok 29 degrees;
Tsing Yi 27 degrees;
Shek Kong 28 degrees;
Tsuen Wan Ho Koon 27 degrees;
Tsuen Wan Shing Mun Valley 27 degrees;
Hong Kong Park 26 degrees;
Shau Kei Wan 27 degrees;
Kowloon City 26 degrees;
Happy Valley 27 degrees;
Wong Tai Sin 26 degrees;
Stanley 27 degrees;
Kwun Tong 26 degrees;
Sham Shui Po 27 degrees;
Kai Tak Runway Park 27 degrees;
Yuen Long Park 29 degrees;
Tai Mei Tuk 26 degrees.

Between 8:45 and 9:45 a.m., the rainfall recorded in various regions were:

Kwun Tong 2 to 5 mm;
Southern District 0 to 4 mm;
Sai Kung 0 to 4 mm;
Kowloon City 0 to 3 mm;
Wong Tai Sin 1 to 2 mm;
Yau Tsim Mong 0 to 1 mm;
Eastern District 0 to 1 mm;
Central & Western District 0 to 1 mm;
Wan Chai 0 to 1 mm.


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


Climatological Information for 16 Jul


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

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

Bulletin updated at 09:45 HKT 16/Jul/2018

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

A strong easterly airstream is affecting the coast of Guangdong. Showers associated with a broad trough of low pressure are affecting the northern part of the South China Sea. Besides, the area of low pressure over the seas east of Luzon is intensifying. A tropical cyclone appears to be forming.

Weather forecast for today

Mainly cloudy with sunny intervals. A few showers at first. Moderate to fresh easterly winds, strong offshore and on high ground at first.

Outlook : Still a few showers in the next couple of days.


(The above forecast period is valid up to 23:59 HKT today, 16/07/2018; 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 16/Jul/2018

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

GENERAL SITUATION AT 152100 UTC:
AN EASTERLY AIRSTREAM IS GENERALLY AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 160100 UTC:

HONG KONG= E 6-7, OCNL 8. ISOL SHOWERS AND TS. SEA UP TO 6 M. SWELL E 2 M. TEMP 30-27 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 2-3 M, SW 2 M. =
TAIWAN STRAIT= NE 5-6, OCNL 7. ISOL SHOWERS AND TS. SEA UP TO 4 M. SWELL NE 2 M. =
BASHI= E TO NE 6-7, 8 LATER. DOWN TO 1000 M IN SCT HEAVY SQUALLY SHOWERS AND TS. SEA 3-4 M, 6 M LATER. SWELL E 2-3 M, SW 2 M. =
PRATAS= E 6-7, N TO NE 8 LATER. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 3-4 M, 6 M LATER. SWELL E 2-3 M, SW 2 M. =
BALINTANG= E TO NE 6-7, CYCLONIC 8 LATER. DOWN TO 1000 M IN SCT HEAVY SQUALLY SHOWERS AND TS. SEA 3-4 M, 6 M LATER. SWELL E 2-3 M, SW 2 M. =
SCARBOROUGH= S TO SE 5-6, SW 6-7 LATER. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 2-3 M, UP TO 4 M LATER. SWELL SW 2-3 M. =
PARACEL= S TO SE 5-6. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 2-3 M. SWELL SW 2-3 M. =
TONKIN= E TO NE 5-6, OCNL 7. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA UP TO 4 M. SWELL NE 2 M. =
DANANG= S TO 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

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9-day Weather Forecast | UV Index Forecast | Weather Information for Fishermen

Bulletin issued at 09:30 HKT 16/Jul/2018

Weather information for south China coastal waters issued by the Hong Kong Observatory at 9:30 a.m. on 16 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 easterly airstream and a broad trough of low pressure are affecting the south China coastal waters. Besides, the area of low pressure over the seas east of Luzon is intensifying. A tropical cyclone appears to be forming.

Area forecasts for the next 24 hours

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

Nan'ao, Shanwei and South of Hong Kong:
East 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, occasionally force 8. Scattered squally showers and thunderstorms.

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

Waglan Island Wind east-northeast force 6
  Visibility 17 Kilometres

Shantou Wind east-northeast force 2
  Visibility 30 Kilometres

Dongsha Wind east force 4
  Visibility 10 Kilometres

Huangmaozhou Wind east force 7

Macau Wind northeast force 4
  Visibility 9 Kilometres

Xisha Wind west-southwest force 4
  Visibility 19 Kilometres in showers


WEATHER FORECAST FOR LOCAL AVIATION
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Weather Forecast for Local Aviation

Bulletin issued at 09:30 HKT 16/JUL/2018
(Next update at 12:30 HKT 16/JUL/2018)
I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     STRONG WINDS, SEV TURB AND SEV GUSTS. 
     ISOL CUNIM/TS AND ASSOCIATED HAZARDS.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     A STRONG  EASTERLY AIRSTREAM AND A BROAD TROUGH
     OF LOW PRESSURE ARE AFFECTING THE SOUTH CHINA
     COASTAL AREAS. BESIDES, THE AREA OF LOW PRESSURE
     OVER THE SEAS EAST OF THE PHILIPPINES IS
     INTENSIFYING, A TROPICAL CYCLONE APPEARS TO BE
     FORMING.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1000 TO 2000 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  100/10-15 OCNL 20
                  TEMPO VRB/25G35 IN TS
       OFFSHORE:  100/25-30G40                         26-31
   B.   2000 FT:  100/25-30G40                         22
   C.   5000 FT:  100/35                               18
   D.  10000 FT:  130/30                               12
   E.  18000 FT:  120/25                               0
   F.  24000 FT:  130/35                               MS12
   G.  30000 FT:  140/20                               MS22
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      SUNNY INTERVALS WITH A FEW ISOLATED SHOWERS AND
      THUNDERSTORMS.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1500 FT  SCT 3500 FT.  TEMPO FEW CB 1000 FT
      SCT 2000 FT  BKN 5000 FT.
   K. VISIBILITY    : 9 KM.  TEMPO 3000 M IN SHOWERS.  TEMPO 2000 M IN TS.
   L. 0 DEG. C LEVEL: 18000 FT      10 DEG. C LEVEL(S) : 11400 FT
   M. TURBULENCE    : MOD TO SEV
   N. SEA STATE     : 4.0-5.5 M     SEA TEMPERATURE    : 27 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE TO FRESH EASTERLY WINDS.  MAINLY CLOUDY
     WITH ISOLATED SHOWERS.=
===================================================================
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 09:50 HKT on 16 Jul 18

VHHK SIGMET 1 VALID 160150/160550 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N2106 E11442 - N2036 E11354 - N2136 E11142 - N2212 E11312 - N2106 E11442 TOP FL380 MOV NW 10KT NC= VHHK SIGMET 6 VALID 152155/160155 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N2036 E11512 - N1848 E11400 - N2030 E11306 - N2100 E11130 - N2130 E11130 - N2230 E11348 - N2036 E11512 TOP FL430 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 16/Jul/2018
HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     28.3 C
Minimum Air Temperature                     25.0 C
Grass Minimum Temperature                   24.0 C
Relative Humidity                        82 - 96 Percent
Rainfall                                    67.4 mm 
Total rainfall since 1st January           868.0 mm
Against an average of                     1261.9 mm

Other Stations                Min                  Max
King's Park                  24.6 C               28.2 C
Wong Chuk Hang               24.8 C               27.8 C
Ta Kwu Ling                  25.0 C               28.2 C
Lau Fau Shan                 24.0 C               26.8 C
Tai Po                       24.9 C               28.2 C
Sha Tin                      25.0 C               29.4 C
Tuen Mun                     24.7 C               29.2 C
Tseung Kwan O                24.6 C               28.0 C
Sai Kung                     25.0 C               28.7 C
Cheung Chau                  24.1 C               26.9 C
Chek Lap Kok                 25.5 C               28.6 C
Tsing Yi                     25.1 C               29.4 C
Shek Kong                    25.0 C               28.3 C
Tsuen Wan Ho Koon            23.6 C               26.4 C
Tsuen Wan Shing Mun Valley   24.3 C               28.3 C
Hong Kong Park               24.4 C               27.8 C
Shau Kei Wan                 23.8 C               28.1 C
Kowloon City                 24.3 C               28.2 C
Happy Valley                 25.7 C               28.4 C
Wong Tai Sin                 24.7 C               28.2 C
Stanley                      24.7 C               27.9 C
Kwun Tong                    24.4 C               27.9 C
Sham Shui Po                 24.8 C               29.2 C
Kai Tak Runway Park          24.8 C               28.6 C
Yuen Long Park               24.8 C               28.7 C
Tai Mei Tuk               24.6 C               28.3 C

Duration of sunshine (King's Park):              0.3 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 4.
Sea surface temperature (Waglan Island):        27.5 C 

Yesterday's (15 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                       0.13
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 15 Jul
Last revision date: <16 Jul 2018> 

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