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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 09:02 HKT 30/Oct/2019

At 9 a.m. at the Hong Kong Observatory the air temperature was 23 degrees Celsius and the relative humidity 61 per cent.
During the past hour the mean UV Index recorded at King's Park was 1. The intensity of UV radiation was low.

The air temperatures at other places were:

King's Park 23 degrees;
Wong Chuk Hang 23 degrees;
Ta Kwu Ling 22 degrees;
Lau Fau Shan 22 degrees;
Tai Po 21 degrees;
Sha Tin 22 degrees;
Tuen Mun 23 degrees;
Tseung Kwan O 22 degrees;
Sai Kung 22 degrees;
Cheung Chau 22 degrees;
Chek Lap Kok 23 degrees;
Tsing Yi 23 degrees;
Shek Kong 22 degrees;
Tsuen Wan Ho Koon 21 degrees;
Tsuen Wan Shing Mun Valley 22 degrees;
Hong Kong Park 23 degrees;
Shau Kei Wan 23 degrees;
Kowloon City 22 degrees;
Happy Valley 24 degrees;
Wong Tai Sin 23 degrees;
Stanley 23 degrees;
Kwun Tong 22 degrees;
Sham Shui Po 23 degrees;
Kai Tak Runway Park 23 degrees;
Yuen Long Park 23 degrees;
Tai Mei Tuk 22 degrees.

Between midnight and 9 a.m. the minimum temperature was 21.5 degrees Celsius at the Hong Kong Observatory.

Here is the information on Tropical Depression Matmo at 8 a.m.:
Location: 12.9 degrees north, 111.6 degrees east.


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


Climatological Information for 30 Oct


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 08:45 HKT 30/Oct/2019

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

A dry northeast monsoon is affecting southern China. Meanwhile, a band of clouds is covering the coast of Guangdong.

At 8 a.m., Tropical Depression Matmo was centred about 510 kilometres southeast of Da Nang. It is forecast to move west at about 18 kilometres per hour in the general direction of the southern part of Vietnam.

Weather forecast for today

Bright periods. Dry during the day. The maximum temperature will be about 26 degrees. Moderate to fresh east to northeasterly winds, occasionally strong offshore later.

Outlook : Windy with sunny periods in the next couple of days. It will be slightly cooler in the morning and at night.


(The above forecast period is valid up to 23:59 HKT today, 30/10/2019; 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/Oct/2019

N0 WARNING.

GENERAL SITUATION AT 292100 UTC:
FOR DETAILS ON TROPICAL DEPRESSION MATMO (1922), PLEASE REFER TO THE 3-HRLY SHIPPING WARNINGS. THE NORTHEAST MONSOON IS GENERALLY AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 300100 UTC:

HONG KONG= E TO NE 5-6, OCNL 7. ONE OR TWO RAIN PATCHES. SEA UP TO 4 M. SWELL NE 2 M. TEMP 26-22 C. =
KWANGTUNG= E TO NE 6-7. ISOL SHOWERS. SEA 3-4 M. SWELL NE 2 M. =
TAIWAN STRAIT= NE 6-7. ISOL SHOWERS. SEA 3-4 M. SWELL NE 2 M. =
BASHI= E TO NE 6-7. ISOL SHOWERS AND TS. SEA 3-4 M. SWELL NE 2 M. =
PRATAS= NE 6-7. ISOL SHOWERS AND TS. SEA 3-4 M. SWELL NE 2 M. =
BALINTANG= E TO NE 6-7. ISOL SHOWERS AND TS. SEA 3-4 M. SWELL NE 2 M. =
SCARBOROUGH= E 5-6, OCNL 7 AT FIRST. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 2-3 M, UP TO 4 M AT FIRST. SWELL NE 2 M. =
PARACEL= N TO NE 6-7, E 6-7 LATER. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 3-4 M. SWELL NE 2 M. =
TONKIN= N TO NE 5-6, BEC NE 7. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 2-3 M, BEC 4 M. =
DANANG= N TO NE 6-7. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 3-4 M. SWELL NE 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 30/Oct/2019

Weather information for south China coastal waters issued by the Hong Kong Observatory at 9:30 a.m. on 30 October 2019

Warnings:
Strong winds in all areas.

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

Tropical Depression Matmo has intensified into a tropical storm. At 9 a.m., Matmo with maximum sustained winds of about 65 kilometres per hour near its centre was located at 12.9 degrees north, 111.5 degrees east. It is forecast to move west at about 18 kilometres per hour in the general direction of the southern part of Vietnam.

Area forecasts for the next 24 hours

Hong Kong Adjacent Waters:
East to northeast force 5 to 6, occasionally force 7.
One or two rain patches.
Moderate to rough seas.

Nan'ao and Shanwei:
Northeast force 6 to 7.
Rough seas.

South of Hong Kong and Shangchuan Dao:
East to northeast force 6 to 7.
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-northeast force 5
  Visibility 28 Kilometres

Shantou Wind west force 1
  Visibility 23 Kilometres

Dongsha Wind northeast force 4
  Visibility 10 Kilometres

Huangmaozhou Wind northeast force 4

Macau Wind north-northeast force 3
  Visibility 19 Kilometres

Xisha Wind northeast force 4
  Visibility 3300 Metres in rain


WEATHER FORECAST FOR LOCAL AVIATION
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Weather Forecast for Local Aviation

Bulletin issued at 09:30 HKT 30/OCT/2019
(Next update at 12:30 HKT 30/OCT/2019)
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.
     AT 8 A.M., THE TROPICAL DEPRESSION MATMO WAS
     CENTRED NEAR 12.9 DEGREES NORTH 111.6 DEGREES
     EAST AND IS FORECAST TO MOVE WEST AT ABOUT 10
     KNOTS IN THE GENERAL DIRECTION OF THE SOUTHERN
     PART OF VIETNAM.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1000 TO 2000 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  050/10-15
       OFFSHORE:  060/15-20, OCNL 25                   21-28
   B.   2000 FT:  060/15-20, OCNL 25                   18
   C.   5000 FT:  070/15                               14
   D.  10000 FT:  190/5-10                             11
   E.  18000 FT:  220/15                               MS4
   F.  24000 FT:  260/25                               MS15
   G.  30000 FT:  250/30                               MS28
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      BRIGHT PERIODS.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 3000 FT.
   K. VISIBILITY    : 10 KM.
   L. 0 DEG. C LEVEL: 16000 FT      10 DEG. C LEVEL(S) : 11200 FT
   M. TURBULENCE    : MOD TO SEV OFFSHORE AND NEAR HILLS.
   N. SEA STATE     : 2.0-3.5 M     SEA TEMPERATURE    : 27 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE TO FRESH EAST TO NORTHEASTERLY WINDS,
     STRONG OFFSHORE. MAINLY CLOUDY.=
===================================================================
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 08:51 HKT on 30 Oct 19

VHHK SIGMET 1 VALID 300050/300450 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N1925 E11613 - N1642 E11400 - N1843 E11212 - N1919 E11308 - N1925 E11613 TOP FL450 MOV W 09KT 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: <30 Oct 2019> 

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 09:30 HKT 30/Oct/2019


Tropical Cyclone Warning

Tropical Depression Matmo (1922) has intensified into a Tropical Storm with central pressure 998 hectopascals. At 300000 UTC, it was centred within 90 nautical miles of one two point nine degrees north (12.9 N) one one one point eight degrees east (111.8 E) and is forecast to move west at about 10 knots for the next 24 hours.

Maximum winds near the centre are estimated to be 35 knots.

Radius of over 33 knot winds 60 nautical miles.
Radius of over 2 metre waves 180 nautical miles over northern semicircle, 90 nautical miles elsewhere.

Forecast position and intensity at 310000 UTC
One three point seven degrees north (13.7 N)
One zero seven point zero degrees east (107.0 E)
Maximum winds 30 knots.

Forecast position and intensity at 010000 UTC
Dissipated over land.




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/Oct/2019
HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     24.7 C
Minimum Air Temperature                     20.3 C
Grass Minimum Temperature                   20.3 C
Relative Humidity                        60 - 71 Percent
Rainfall                                       0 mm 
Total rainfall since 1st January          2382.7 mm
Against an average of                     2331.0 mm

Other Stations                Min                  Max
King's Park                  19.5 C               24.4 C
Wong Chuk Hang               20.3 C               25.3 C
Ta Kwu Ling                  17.4 C               25.6 C
Lau Fau Shan                 18.4 C               24.6 C
Tai Po                       18.9 C               24.0 C
Sha Tin                      19.4 C               24.1 C
Tuen Mun                     19.5 C               25.1 C
Tseung Kwan O                18.2 C               25.4 C
Sai Kung                     19.8 C               23.9 C
Cheung Chau                  19.0 C               26.6 C
Chek Lap Kok                 19.7 C               26.2 C
Tsing Yi                     19.4 C               25.0 C
Shek Kong                    18.9 C               25.9 C
Tsuen Wan Ho Koon            17.9 C               22.8 C
Tsuen Wan Shing Mun Valley   17.9 C               26.0 C
Hong Kong Park               20.0 C               25.7 C
Shau Kei Wan                 19.4 C               25.1 C
Kowloon City                 18.9 C               24.4 C
Happy Valley                 20.1 C               25.3 C
Wong Tai Sin                 19.5 C               24.5 C
Stanley                      20.1 C               24.9 C
Kwun Tong                    19.3 C               24.6 C
Sham Shui Po                 19.6 C               26.6 C
Kai Tak Runway Park          19.5 C               24.6 C
Yuen Long Park               19.2 C               26.1 C
Tai Mei Tuk               18.7 C               24.9 C

Duration of sunshine (King's Park):              4.5 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 6.
 

Yesterday's (29 Oct 2019) 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                               0.11
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                         0.14
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 29 Oct
Last revision date: <30 Oct 2019> 

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