New Zealand Gazette – 1931 – No. 41

Page 1605

✨ Meteorological Observations



May 28.]
THE NEW ZEALAND GAZETTE.

Government Meteorological Observatory.

METEOROLOGICAL Observations at Kelburn, Wellington, for the Month of March, 1931. 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. In Screen. At 9 a.m. Maximum. Minimum on Grass. Solar Radiation Maximum. Wind. Beaufort Scale. Anemometer. Rainfall, in Points : (100 Points = 1 Inch). Bright Sunshine: Hours and Tenths. Weather (Symbols) at 9 a.m.
Dry. Wet. Humidity. Dry. Dry. Direction. Force. Run in 24 Hours.
1 ... ... 30.178 58.2 54.1 75 61.0 52.4 50.0 127.7 SSE 4 436
2 ... ... 30.206 58.7 52.8 66 64.6 49.3 43.8 131.9 SE 1 138
3 ... ... 30.218 51.0 46.4 68 54.0 48.0 47.7 108.0 SE 4 142
4 ... ... 30.237 53.7 49.5 73 56.0 47.2 45.8 116.0 S 5 293
5 ... ... 30.300 55.9 50.5 67 64.3 49.1 47.9 132.6 SE 2 224
6 ... ... 30.193 57.9 53.8 75 62.5 51.1 47.2 119.2 NNW 3 115
7 ... ... 30.178 60.0 55.5 74 62.1 53.8 50.3 115.0 NNW 4 191
8 ... ... 30.495 56.0 51.6 73 60.2 51.5 51.0 124.2 SSE 5 211
9 ... ... 30.419 60.2 53.9 64 68.8 45.4 37.6 136.7 NNE 1 127
10 ... ... 30.238 61.2 57.2 77 64.1 58.7 57.0 109.0 NNW 5 305
11 ... ... 30.030 61.0 60.7 98 66.7 59.0 58.2 123.9 NW 6 524
12 ... ... 30.203 61.2 56.8 75 68.0 54.3 51.9 134.1 NW 3 269
13 ... ... 30.358 60.0 53.4 62 68.7 49.1 40.4 125.1 NE 1 71
14 ... ... 30.330 62.3 55.7 63 67.4 54.2 51.9 125.0 NW 4 192
15 ... ... 30.138 60.4 54.9 68 63.2 54.0 50.3 126.0 NNW 6 227
16 ... ... 30.002 63.2 59.8 81 69.8 57.0 55.9 124.8 NNW 4 304
17 ... ... 29.867 59.2 59.0 99 64.3 57.9 57.1 140.2 NW 4 368
18 ... ... 29.782 60.0 51.8 53 63.8 46.4 42.1 119.7 NW 3 256
19 ... ... 30.140 51.7 48.3 77 59.0 51.1 46.1 132.1 SE 4 275
20 ... ... 30.358 56.3 50.0 61 63.5 45.1 34.9 122.3 ENE 1 102
21 ... ... 30.306 60.9 57.0 78 63.9 49.1 43.0 125.0 NNW 3 98
22 ... ... 30.248 59.4 55.1 74 62.1 56.5 53.6 104.4 N 6 432
23 ... ... 30.092 61.1 59.5 90 62.7 58.7 57.2 81.3 NW 5 495
24 ... ... 30.079 59.7 58.0 90 69.7 55.0 53.6 126.1 NNE 1 336
25 ... ... 29.926 57.9 57.2 96 62.0 54.4 49.8 116.0 NW 3 127
26 ... ... 29.850 55.0 53.0 87 55.3 51.1 44.7 96.2 SE 3 288
27 ... ... 30.034 52.3 47.3 66 55.4 49.0 47.0 120.8 SE 4 243
28 ... ... 30.305 50.9 47.0 73 55.4 45.2 43.1 118.5 SE 4 291
29 ... ... 30.235 54.2 50.1 73 58.8 44.0 34.1 118.0 S 1 112
30 ... ... 30.003 56.8 53.2 77 64.0 46.1 37.0 122.0 NNW 2 57
31 ... ... 29.915 61.2 55.4 67 67.0 53.2 49.2 127.5 NW 3 309

Means, &c. ... 30.157 58.0 53.8 75 62.8 51.5 47.7 120.9 ... 3.4 244 64 198.7 ...

Mean earth temperature at 1 ft. and 3 ft., 60.8°. Number of rain days, 10.

DIRECTION OF WIND.

Gale (force 8 or more). ... | Forces 4 to 7. 16 | Calm. ... | N. 5½ | N.E. 2½ | E. ½ | S.E. 8 | S. 3 | S.W. ... | W. ... | N.W. 11½

NOTE.—A cold, dry, and sunny month, with rainfall at Karori Reservoir, near Kelburn, 82 per cent. below the average. Total bright sunshine, 198.7 hours, 52 per cent. of the possible, and two sunless days. Mean dew-point, 49.9°; and mean vapour pressure, 0.358 in.

SUMMARY FOR THE MONTH OF MARCH, 1931.

General.—March was a very dry month practically throughout the country. Fortunately there were comparatively few strong winds, and most of the rainfall was of a steady nature. These conditions, together with the cool temperatures, were responsible for the maximum amount of good being derived from such rain as fell. In most districts further considerable rains are, nevertheless, required if supplies of winter feed for stock are to be adequate. And the rain must come soon, or temperatures will be too low to promote extensive growth of pasture. At present stock are, on the whole, in good condition, and crops have harvested well. In the greater part of the Hawke’s Bay and Poverty Bay districts, where rain was most needed, there were good falls towards the end of the month, and the situation was considerably relieved. In parts of South Auckland, the Bay of Plenty, Taranaki, Manawatu, and Wairarapa districts stock are feeling the effects of continued low temperatures and rather scanty feed.

Rainfall.—On the average for the whole Dominion the rainfall was only about half the normal total for March. In the North Island it was considerably less. The only places where the normal fall was approached were Poverty Bay and parts of the West Coast of the South Island.

Temperature.—Temperatures were everywhere below the average for March. In the North Island the deficit was between 2° F. and 3° F., but in the South Island it was considerably less. Sunshine was rather above the average, so that good harvesting weather was experienced.

Pressure Systems.—At the beginning of the month anticyclonic conditions prevailed, and the weather was generally fine until the 10th. Between the 10th and the 12th a moderate depression passed, and rain was almost general, though only light to moderate in amount.

The next depression passed between the 15th and 18th, and again there was widespread, though mainly light, rain. A slight cyclonic centre developed in this depression and crossed the South Island on the night of the 17th. Thunderstorms were experienced, Christchurch recording an unusually severe one.



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🏗️ Meteorological Observations for March 1931

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Weather, Temperature, Rainfall, Wind, Wellington