620538-1931-Local-storm-Signal-Code — Page 1

THE HONG KONG GOVERNMENT GAZETTE, DECEMBER 31, 1931. 957

ROYAL OBSERVATORY, HONG KONG.

No. 851.

LOCAL STORM SIGNAL CODE.

Recommended for use in the Far East at a Conference of Directors of Far Eastern Weather Services, held at Hong Kong in the year 1930.

Adopted at Hong Kong from 1931, March 1.

Signal. Symbol.

1

T

2

3

4

5

?

6

17

8

9

10

محمد

DAY SIGNALS,

Meaning.

A depression or typhoon exists which may possibly affect the locality.

Strong wind with squalls may possibly occur from the S.W. (S-W). Strong wind with squalls may possibly occur from the S.E. (E-S). Typhoon dangerous but danger to locality not imminent.

Gale expected from the N.W. (W-N).

Gale expected from the S.W. (S-W).

Gale expected from the N.E. (N-E).

Gale expected from the S.E. (E-S).

Gale expected to increase.

Wind of typhoon force expected (any direction).

Signal No. 4 will be used in the Philippines but not at Hong Kong, the information it convoys being given by the Non-Local Signals.

Signals 5 to 8 are not hoisted until it is tolerably certain that a gale (40-45 m.p.h. by the Dines Anemometer) will occur at Hong Kong or Gap Rock, or when a typhoon is sufficiently near to warrant a danger signal, although the occurrence of a gale is by no means certain.

lf, with one of signals 5 to 8 hoisted, conditions indicate that the wind will not only increase but attain hurricane force, signal No. 9 may be dispensed with, thus giving the longest possible warning of destructive winds.

Signal No. 10 will be accompanied by three explosive bombs, fired at intervals of 10 seconds at the Water Police Station and repeated at the Harbour Office.

When the centre of a typhoon passes over the locality the wind decreases rapidly to a calm, or nearly calm, and blows violently from the opposite direction when the centre has passed.

The signal will be lowered when it is considered that all danger is over.

The Day Signals will be displayed on the Radio mast at the Royal Observatory, at the Harbour Office, H.M.S. Tamar, Green Island, Hong Kong and Kowloon Wharf and Godown Co., the Standard Oil Co. at Lai-chi-kok, the flagstaff near the Field Officer's Quarters at Lyemun, Gough Hill Police: Station and Taipo (District Officer's flagstaff).

NIGHT SIGNALS. (Lamps.)

2

3

4

5

6

WHITE

WHITE

GREEN

WHITE

GREEN

WHITE

WHITE

WHITE

GREEN

WHITE

WHITE

RED

WHITE GREEN GREEN WHITE GREEN WHITE

8

10

GREEN WHITE GREEN

GREEN

WHITE GREEN

RED

GREEN

WHITE

GREEN GREEN

RED