Latest Message

(2022/01/11 17:00 HKT)

The preliminary version of the review report for tropical cyclone RAI, which affected Hong Kong on the day of winter solstice, is available on this page.

(2022/01/08 01:10 HKT)

The final version of the review report for tropical cyclone LIONROCK, which affected Hong Kong last October, is available on this page.

Warning(s) in Force [Details] [Def]

Earthquake Info

+M 6.1 - 74 km W of Panguna, Papua New Guinea

+M 5.2 - 70 km ENE of Hualien City, Taiwan

Weather Details around Hong Kong [Details] [HKO link]

Tropical Cyclone Information [Details] [HKO link]

Real-time Weather Photos [Details] [HKO link]

The following photo shows the real-time view of Victoria Harbour, as viewed from Central towards the east.

Astronomical / Tidal Information [Details] [HKO link]

Info for 17/01/2022 (Monday):

Astro. Info				Tide
Sunrise	:	07:05		03:55	0.50 m
Sunset	:	18:01		10:47	1.35 m
Moonrise	:	17:22		13:12	1.26 m
Moonset	:	06:30		20:39	2.33 m

Jan 18, 07:48 HKT: Full Moon

Jan 23, 18:25 HKT: Mercury Inferior Conj.

Weather at a Glance [Details] [HKO link]

Data as of 15:30 on 17/1/2022

• In Brief
• Detailed

18.0 C	83 %	1019.3 hPa
All measurements taken at Hong Kong Observatory

HKO	Temp.:	18.0 C
	RH.:	83 %
	Apparent Temp.:	18.0 C
	Dew Point:	15.1 C
	Temp. of today:	18.4 / 17.1 C (Range 1.3 C)
	Mean SLP.:	1019.3 hPa
King's Park	Wind:	9 km/h (E)
	UV:	0.8 (Low)
	Rain:	0.0 mm (past 15 min)

Upper-Level Weather Information [Details]

Data as of 08:00 HKT on 17/1/2022 - Level of instability:

Delta P Values

At 2022/01/17 14 HKT: [Explanation] [Values for the past 10 days]

Delta p(972) = 6.2 (15-18 hours)
Delta p(S) = 8.6 (strong E wind at Waglan)

3-day Weather Forecast [Click for 9-day] [HKO link]

Data as of 11:30 HKT 17/Jan/2022

General Situation: The northeast monsoon will bring cool weather to Guangdong in the next couple of days. Under the influence of a strong easterly airstream, it will be windy over the coast of Guangdong on Thursday and Friday. A broad band of clouds is expected to bring rainy weather to the coast of southern China and the northern part of the South China Sea over the weekend.

Date	18/1 (Tue)	19/1(Wed)	20/1(Thu)
Weather	Mainly cloudy. Sunny intervals during the day. Cool with one or two light rain patches in the morning.	Mainly cloudy. Sunny periods in the afternoon. Cool in the morning.	Mainly cloudy. Sunny periods during the day.
Wind	NE force 4, occasionally force 5.	NE force 4.	E force 4 to 5, occasionally force 6 offshore and on high ground.
Temp.	15 - 18 °C	16 - 20 °C	17 - 20 °C
R.H.	75 - 90 %	65 - 85 %	70 - 90 %

Extended Temperature Outlook [HKO link]

Maximum temperature:

Minimum temperature:

Weather Conditions in South China Sea [Details] [HKO link]

Satellite / Radar Images [Details]

Radar: 256 km range	Radar: 128 km range	Radar: 64 km range	Satellite: IR imagery*

* The Satellite imagery above is taken by Himawari-8 operated by the Japan Meteorological Agency (JMA).

Aviation Weather Observation Report [HKO link]

Data as of 15:30 HKT on 17 Jan 22

Original code: METAR VHHH 170730Z 07004KT 030V100 8000 FEW018 SCT025 19/14 Q1019 NOSIG=

Wind	Visibility	Weather	Cloud Amount	Cloud Base	Temperature	Dew Point	Pressure (QNH)
4 knots from 070 degrees (ENE), variability: 030-100 degrees	8 km	No significant weather	1 to 2 oktas 3 to 4 oktas	1800 feet 2500 feet	19 oC	14 oC	1019 hPa

Next Two Hours Change

No Significant Change

Meteorological Calculation

A. Conversion between units Please select unit --------- Temperature --------- C     Celsius F     Fahrenheit K     Kelvin R     Rankine --------- Length --------- km     Kilometre mi     Statute Mile NM     Nautical Mile --     Degree of Latitude m     Metre ft     Foot --------- Speed --------- km/h     Kilometre per Hour m/s     Metre per Second mph     Statute Mile per Hour kt     Knot (Nautical Mile per Hour) --------- Direction --------- Degree(s) => Direction --------- Pressure --------- hPa/mb     Hectopascal/Millibar inHg     Inch of Mercury atm     Atmosphere mmHg     Torr

B. Calculation of distance between places on Earth Place 1:     Lat :   Long : Place 2:     Lat :   Long :

Current Partner Sites [Details]

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