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

 

Earthquake Info

+M 5.1 - 126 km SSW of Ishigaki, Japan

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 31/01/2023 (Tuesday):

Astro. Info				Tide
Sunrise	:	07:02		01:53	0.98 m
Sunset	:	18:10		18:06	2.02 m
Moonrise	:	13:34
Moonset	:	02:35

Jan 31, 12:24 HKT: Moon-Mars: 0.1° N

Feb 02, 16:18 HKT: Moon North Dec.: 27.5° N

Feb 04, 16:55 HKT: Moon Apogee: 406500 km

Feb 06, 02:29 HKT: Full Moon

Weather at a Glance [Details] [HKO link]

Data as of 15:20 on 31/1/2023

• In Brief
• Detailed

18.5 C	53 %	1015.7 hPa
All measurements taken at Hong Kong Observatory

HKO	Temp.:	18.5 C
	RH.:	53 %
	Apparent Temp.:	18.5 C
	Dew Point:	8.7 C
	Temp. of today:	20.1 / 13.8 C (Range 6.3 C)
	Mean SLP.:	1015.7 hPa
King's Park	Wind:	5 km/h (E)
	UV:	N/A
	Rain:	0.0 mm (past 15 min)

Upper-Level Weather Information [Details]

Data as of 08:00 HKT on 31/1/2023 - Level of instability:

Delta P Values

At 2023/01/31 14 HKT: [Explanation] [Values for the past 10 days]

Delta p(972) = -2.7
Delta p(S) = -1.5

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

Data as of 11:30 HKT 31/Jan/2023

General Situation: The northeast monsoon affecting southern China will continue to moderate tomorrow. Temperatures will rise further over the region. The strong easterly airstream is expected to affect the coast of Guangdong in the latter part of this week and over the weekend. Meanwhile, an upper-air disturbance will bring rainy weather to the region. With the upper-air disturbance departing, the weather will be brighter over the coast of southern China early next week.

Date	1/2 (Wed)	2/2(Thu)	3/2(Fri)
Weather	Mainly cloudy. Sunny intervals during the day.	Cloudy with one or two rain patches.	Cloudy with a few rain patches. It will be cool.
Wind	E force 4.	E force 4 to 5, occasionally force 6 offshore.	E force 4 to 5, occasionally force 6 offshore at first.
Temp.	17 - 21 °C	17 - 20 °C	16 - 19 °C
R.H.	75 - 90 %	75 - 90 %	80 - 95 %

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 31 Jan 23

Original code: METAR VHHH 310730Z 28005KT 170V320 9999 FEW035 22/10 Q1015 NOSIG=

Wind	Visibility	Weather	Cloud Amount	Cloud Base	Temperature	Dew Point	Pressure (QNH)
5 knots from 280 degrees (W), variability: 170-320 degrees	10 km or above	No significant weather	1 to 2 oktas	3500 feet	22 oC	10 oC	1015 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 :

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