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MediumSevere WeatherCS: 46 · v5

Very Hot Weather Warning near New Territories, Hong Kong

HKHong Kong Observatory

Right now

The most recent data we hold from Hong Kong Observatory arrived 4 hours ago.

2 other detections within 20 km in the last 24 hours, the nearest <1 km from here.

This page covers the record dated 20 October 2026. Browse recent observations in this area:

Severe Weather · Near New Territories todayNear New Territories today
Distance and hazards
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Reported by Hong Kong Observatory 7 days ago.

It is the 14th strongest of the 34 detections recorded within 20 km of this point since 12 March 2026. The last comparable one was on 19 October 2026. 6 more were recorded here in the fortnight before it.

What the source measured

Hong Kong Observatory reported: The Very Hot Weather Warning has been issued by the Hong Kong Observatory at 6:45 a.m. Very hot weather expected in Hong Kong today. The public should beware of heat stroke. Elderly persons, pregnant women, infants and children, those with chronic illnesses, such as heart disease or high blood press

Urban PEI: 49,218,257 within a heuristic 50 km radius; not unique people.

Nearby, since 12 March 2026

How we know

One source: Hong Kong Observatory. Not yet confirmed by a second, independent source.

Our own score for this event is 46 out of 100.

This is our versioned heuristic index, not source severity or a calibrated probability. Urban PEI does not count unique people.

Computed under scoring rules v5. Rows carrying other versions were judged by different rules and are not directly comparable.

Series begins 8 March 2026. Comparisons refer to that period only. Collection gap: 14-26 August 2026.

This data is aggregated algorithmically from scientific sources. Not a replacement for official emergency warnings.

Event data

TypeSevere Weather
SeverityMedium
Calamity Score (ours)46 / 100
Legacy data-support index0.70/1
Coordinates22.4000, 114.1000
Nearest cityNew Territories (2 km)
Urban exposure index (PEI)49.2M within 50 km
Impact tiersignificant
Timestamp2026-10-20T22:45:00.000Z
Sourcehttps://www.hko.gov.hk/en/wxinfo/dailywx/wxwarn.htm
LicenceDATA.GOV.HK terms, commercial use permitted · Hong Kong Observatory

Physical priority index · v5. Heuristic priority, not calibrated probability, predictive accuracy or damage. The legacy data-support index combines assigned source support and field availability. Urban PEI is distance-weighted and does not count unique people; zero does not establish that nobody is present. Model cards.

Source and revision timeline

Source: hko. Occurrence: 2026-10-20T22:45:00.000Z.

First archived: 2026-10-20T22:50:51.676Z. Material modification: not recorded.

Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.

Score breakdown

35
intensity
100
Urban PEI term
0
Scenario weight
18
Recorded reference / batch anomaly

Technical details

WarningCodeWHOT
WarningNameVery Hot Weather Warning
UpdatedAt2026-10-20T22:45:00.000Z

Safety information

What to do in a heat wave

Three things first, then what to do before, during and after, and how to tell heat stroke. From FEMA’s Ready.gov and the US National Weather Service.

For this reportSevere Weather · New Territories

  1. Never leave anyone in a car

    Not a child, not an older person, not a pet, not even for a minute: a closed car heats up dangerously fast.

    Ready.gov · NWS

  2. Stay cool and drink

    Spend the hottest hours somewhere cool, drink water regularly, avoid hard effort in the middle of the day.

    Ready.gov

  3. Check on others

    Older people, people living alone, the sick and small children are the most at risk. Call or visit them.

    Ready.gov

Before, during, after. Here it is “after”.

Before · When heat is forecast

  • Find a cool place

    Air-conditioned public places near you: libraries, shopping centres, cooling centres.

  • Keep the house cool

    Shutters and curtains closed in the sun; a fan alone is not enough in great heat.

  • Learn the signs

    Of heat exhaustion and heat stroke (see below).

Ready.gov (FEMA)

During · In the hottest hours

  • Light clothes

    Loose, light and light-coloured.

  • Cool showers

    Or a cool bath, to bring your temperature down.

  • Water and shade for animals

    Pets suffer heat as we do.

  • Effort early or late

    Not in the middle of the day.

Ready.gov (FEMA)

After · When the heat breaks

  • Keep drinking

    Recovery takes a day or two.

  • Keep checking

    On the people at risk around you.

Ready.gov (FEMA)

If a life is in danger

999

Emergency number: HK

Call 999

Questions people ask

How do I recognise heat stroke?

A very high body temperature, hot and dry skin, a fast pulse, confusion or fainting. Call the emergency number, move the person somewhere cool and cool them with wet cloths. Source: Ready.gov (FEMA).

And heat exhaustion?

Heavy sweating, cramps, weakness, dizziness, headache, nausea. Move somewhere cool, loosen clothes, sip water; get help if it lasts over an hour or gets worse. Source: Ready.gov (FEMA).

Is a fan enough?

Not in great heat: it moves hot air. Cool places, cool showers and water are what help. Source: Ready.gov (FEMA).

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