Meteorological Observations




JUNE 14.] THE NEW ZEALAND GAZETTE. 1855

Government Meteorological Observatory.

METEOROLOGICAL Observations at Kelburn, Wellington, for the Month of April, 1934. Observations taken at 9 a.m.

Altitude of Observatory, 415 ft.

Date. Pressure, in Inches, at Sea-level and Standard Gravity. Temperature (° F.) from Observations at 9 a.m. Wind. Rainfall, in Points (100 Points = 1 Inch). Bright Sunshine: Hours and Tenths. Weather (Symbol) at 9 a.m.
In Screen. Minimum on Grass. Solar Radiation: Maximum. Beaufort Scale. Anemometer.
At 9 a.m. Maximum. Minimum. Direction. Force. Run in 24 Hours.
Dry. Wet. Humidity. Dry. Dry.
1 .. .. 30·493 52·8 52·2 96 57·1 49·2 44·7 99·8 SSE 4 136
2 .. .. 30·532 55·0 50·9 73 61·3 45·7 38·6 116·0 Calm .. 144
3 .. .. 30·500 58·2 54·5 78 63·3 47·3 38·3 112·1 N 4 56
4 .. .. 30·523 60·4 56·1 75 65·1 55·2 53·7 115·7 N 3 173
5 .. .. 30·426 61·9 56·2 68 66·7 55·2 52·3 116·1 NNW 5 194
6 .. .. 30·407 60·2 57·3 83 65·0 55·8 52·0 116·3 N 3 152
7 .. .. 30·350 63·9 59·0 74 66·0 56·8 53·1 119·2 N 3 142
8 .. .. 30·142 60·3 58·5 89 65·3 58·1 56·4 119·0 NW 5 295
9 .. .. 29·913 61·1 58·0 82 64·8 58·0 55·9 113·0 NW 7 472
10 .. .. 29·618 59·1 58·3 95 66·5 58·1 57·1 118·8 NNW 6 399
11 .. .. 29·893 55·1 52·0 79 61·7 46·8 45·0 114·0 Calm .. 148
12 .. .. 30·277 52·8 46·0 55 55·8 47·0 43·9 109·4 SSE 5 184
13 .. .. 30·397 53·9 49·0 67 63·4 44·6 38·1 113·2 NNE 1 75
14 .. .. 30·331 59·2 54·1 70 61·9 51·8 51·0 117·2 NW 5 263
15 .. .. 30·346 54·8 51·9 81 63·2 52·2 50·0 107·0 Calm .. 300
16 .. .. 30·206 59·9 57·2 84 60·6 53·4 53·2 73·0 NW 5 196
17 .. .. 29·867 60·6 60·4 99 63·1 56·0 56·0 105·0 NW 5 410
18 .. .. 29·747 61·4 59·0 86 64·0 59·4 58·1 110·9 NW 6 607
19 .. .. 30·121 53·2 51·0 85 56·8 48·3 46·1 110·2 SSE 2 263
20 .. .. 30·338 50·6 47·0 75 61·1 46·8 44·0 104·9 SE 3 188
21 .. .. 30·150 59·4 56·6 83 65·0 46·6 42·5 113·7 NNW 4 51
22 .. .. 30·050 60·0 59·2 95 62·8 57·5 56·6 81·0 NW 3 310
23 .. .. 29·680 60·8 58·6 87 63·6 57·6 56·2 110·9 NW 7 391
24 .. .. 29·567 60·4 57·4 82 63·2 58·0 55·4 110·4 NW 5 438
25 .. .. 29·407 57·1 53·0 74 62·3 50·4 49·1 121·3 NW 4 408
26 .. .. 29·928 43·8 43·0 94 50·8 41·2 40·1 96·0 SSE 6 334
27 .. .. 30·011 50·0 47·3 81 60·2 41·1 32·8 113·2 Calm .. 147
28 .. .. 30·126 58·0 53·8 75 59·1 47·8 39·7 111·3 Calm .. 43
29 .. .. 30·293 53·7 49·7 74 57·8 43·6 36·9 108·2 Calm .. 141
30 .. .. 30·358 51·2 48·4 81 57·1 45·3 39·2 113·0 Calm .. 38
Means, &c. .. 30·133 57·0 53·9 81 61·8 51·0 47·9 109·7 .. 3·4 236·6 350

Mean earth temperature at 1 ft., 58·4°; and at 3 ft., 59·7°. Number of rain days, 9.

DIRECTION OF WIND.

Gale (force 8 or more). | Forces 4 to 7. | Calm. | N. | N.E. | E. | S.E. | S. | S.W. | W. | N.W.
.. | 16 | 7 | 6 | ½ | .. | 3 | 2 | .. | .. | 11½

NOTE.—A normal month, with temperature, rainfall, wind, and sunshine very close to the average. Total bright sunshine 46 per cent. of the possible; two sunless days. Precipitation was 1 per cent. below normal. Gales occurred on the 17th and 22nd; hail fell on the 24th and 25th; there was a thunderstorm on the night of the 24th; and a slight fog on the morning of the 27th. Mean dew-point at 9 a.m., 51·1°; mean vapour pressure, 0·374 in.

NOTES ON THE WEATHER FOR APRIL, 1934.

General.—April was a mild month with comparatively little stormy weather. Precipitation was again considerably below normal over the greater part of the Dominion, but after the first nine days rather humid and cloudy conditions prevailed and some good general rains were recorded. Towards the end of the month the ground was gradually becoming saturated and the effects of the long period of dry weather seemed to be disappearing. Though the weather was not warm or sunny enough to cause vigorous growth of vegetation, a certain amount took place in all districts and the situation as regards feed for stock is generally quite good. Sheep and cattle are reported to be in good condition.

Rainfall.—Heavy rains occurred in the high parts of Taranaki and the western and central portions of the South Island. Elsewhere totals were once more considerably below normal. The east coast of the North Island had a particularly dry month.

Temperature.—As already indicated, for most of the country the month was a mild one, with temperatures above normal. In parts of the eastern districts of the South Island the excess amounted to over two degrees. In Hawke’s Bay, however, where there was a prevalence of southerly winds, the position was exactly reversed. The Wellington Province, also, recorded mean temperatures which were on the cold side. The absence of very strong cold winds prevented serious ill effects from such low temperatures as were experienced. There were some cold nights just before the middle of the month, and on the 13th widespread frosts occurred. On the 27th there was a sharp fall of temperature, marking the first touch of winter. So far, there has been little snowfall, but from the 25th the ranges had a fair coating.

Sunshine.—Less than the average amount of bright sunshine was recorded in most districts, but Nelson 197·3 hours, New Plymouth 191·0 hours, and Blenheim 187·6 hours, fared well, and the southern part of the South Island had slightly more than the average.

Pressure Systems.—At the beginning of the month pressure was above normal over a very large area extending from South Australia to beyond the Chatham Islands and from 25° to 55° south latitude. On the 1st the highest pressure was over Foveaux Strait and reached about 30·6 in. The centre of the anticyclone moved very slowly northwards and eastwards without reduction of pressure. Though barometers fell considerably on the 9th there was a tendency for high pressure throughout the month.



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Weather, Meteorological, Observations, Kelburn, Wellington, April 1934