WEATHER NOTES.

Daily Southern Cross, Volume XXXI, Issue 5578, 12 July 1875, Page 2

WEATHER NOTES.

Thk drcaufi ]\iht concluded has been marked by «me of the icverest gales which hai visited Auckland for aoverul years, though, ftntunattly, the amount of damage done ha* boon much lcw< than on some previous occnMnns ; d\Vlng partly to the clear and evident warning nffoided of its appiouch, which enabled the shipping in harbor to he in a great measure 1 pMliavort fovit. The rapid foil in the barometer, which was noticetlin out last ai tide ns pin inly indicating tho coming of severe weather, was interrupted by a considerable temporary rise, the mercury passing 30in. during the night of the 2nd t and reaching 30*101 on the morning of the" did ; from that point its fall w«W sAldtten, and rapid, the lowest recorded observation (at D p.m. on the 4tli), being 29'059. Twelve hours later it had risen again to 29 57C, and, with a slight oscillation, it has continued rising ever since ; and on the morning of the 10th it stood at 30 # 440, though showing a slightly downward tendency in the evening. The average of the period lias been 20 009, which, though much below the coi responding month of last year, was considerably above the average of eleven years previous. The temperature has been higher than the average of years ; the approximate mean being 54-1 Fain-.; as against fll'; the mean daily range 10$ instead of 13'5, and the extreme range noted not moio than 15" for the 6th, during the pie valence of tile, gale above mentioned. The avwnge of day temperatures ban boon &.)'•> ; that of night 487". These figures indicate a much colder atmosphere than that at the end of last month, resulting from the prevalence of S. and S. W. winds from the morning of the 5th to the 10th inclusive. The absolute extremes have been 051 on the JHh (for provioui day) and 4(5' 1 on the 10th (for piovioiu night). ■fhciHinfall, though greatly in excess of the last decade, has not been very large for the peiiod of the year ; still, it is a little above the average, of eleven years past. Out of a total of 1-585 inches, 0'670, or two-fifths, fell on the night of the 3rd ; while more or less has fallen every day of the period, except the 10th ; mostly in slight flying showers ratherthan in continuous fall. Hence a marked increase in the amount of morning cloud noted, being C"6 *• against 51 for the previous decade, and 5*5. for theenthe month of June. The temperatui e of the dew point has been 40 '2 Fahr., and the Humidity about 83. (Saturation == 100). The radiation thermometer* hare shown a greater range than that of the previous decade. The Solar instrument having been displaced by the wind of Sunday night, noobservation could be taken on the morning of the 5th ; but the average was probably about 90'5 Fahr. ;— the terrestrial ladiation gave an average of 41 '7. According to an observation obligingly communicated from another quarter, thir reading of the 5th must have been the highest of the period ; but as theie is some doubt about the agreement of tho instruments, it has not been made use of on the present occasion. The gale, already more than once referred to, veiy materially raised the average of the wind noted during the ten days : the mean has been 403 miles per diem, being at the rate of 19i miles per hour,an»wering about 4 on Admiral Fitzroy's scale. On the morning of tho 5th the windgaugo wm discovered to have been no much displaced by the fierce galo of the previous night that no reliable reading could be obtained fiom it; but this has been supplied by the obliging courtesy of Mr. Lambert, F.U.A.S., of tho Newton Observatory, -whose figures show d total for the 24 hours of 1,212 miles, being an average of 50 miles per hour ovei the entire peiiod. As, however, the storm was confined to the nine hours between 7 p.m. and 4 a.m., it is evident that the forco of the wind must have vastly exceeded this during itfi continuance. It is probable that dining much of that time the force was not lew than 90 miles per hour, corresponding to 12— the highest degree of the Fitzroy scale ; and even this extreme, allowing for the nine hours 1 utoim, leaves no less an average than 27 miles for the remaining fifteen hours. In the last, article under this heading, in speaking of the windgauge at present in use in the Domain, a misprint occurred which it may be advisable to correct. It appeared to be there stated that this instrument was "not cotwidend to give more than periodical results," the words ■bould have been " not con»trnvted " to do so.