STORMS ON THE COASF OF NEW SOUTH WALES. 83 
29°90, fine, hot, N.E. breeze, thunderstorm in afternoon ; 21st, 
barometer 29°9, very aig S.8.E. and E.N.E. a steady rain 
in the afternoon on 22nd, barometer 29°72 9 9° 
3 p.m., sea breeze E.N.E., par lly ene rain in the after- 
noon, and win a ye south at night ; 3rd, barometer 29°74, 
cloudy day and thunderstorm at aighk "N. ow, so far, we have just 
a week of ordinary summer weather, except that the barometer 
had fallen; the southerly wind and rising barometer on 22nd 
seemed to betoken return of fine weather, but without any other 
warning a fresh N.E. wind sprang up in the night and by 9 a.m 
of 24th was blowing 20 miles an hour and increased to 26 miles 
per hour during the day, w ith showers and dropping rain; baro- 
meter rose to 29: 83, wind blowing haa, all the evening ; and ju st 
after midnight of 24th, with no change in velocity and scarcely 
any in direction of wind only from E. N-E.toB.S.E,,a perfect deluge 
of rain set in and the amount by 9 a.m. of 25 Sth was 8° 90, the 
greatest ever Leg in Sydney for one day; and the ‘total 
number of 1 of wind for the day was 494; after 9 a.m. of 
25th the rain pint a eee but the wind increased phe rose to 
36 miles an hour, and the strongest gust rose to 83 miles, after- 
noteworthy change in the barometer. Such isa ss summer 
N.E. storm ; and one feels disposed to say whenee came it, and 
whither did it go? for instruments yong one scathing. In this 
instance we have the storm with a low and rising barometer, and 
only a few weeks before we have a less severe but similar storm 
(21st November, 1872), with barometer at 30°04 and falling. 
Many of these storms clear up by change round to 7 es 
and others by change to south, so that ‘there seems to be no rule 
which ene ate to find their source. The attached observations 
uth Wales show weather a1 changes simi 
to those ‘i Medare but on turning to see the weather upon the 
the south coast, some light is thrown upon the cause, for at Mel- 
bourne a strong S.E. to .'S. wind was blo owing ; and tr find hi 
examining a number of such storms, tl strong 
8.E. to S. wind is blowing in Melbourne. Now this isa significa 
fact, for it points unmistakably to the cause of our N.E. ‘gale, 
viz., ‘the heated interior of Australia, which, by the up-current 
which it establishes draws in the wind on the south ee east coasts. 
I have looked for observations in the centre ia to 
confirm this view, but unfortunately I find ak few. Colonel 
’ expl 
December, 1872, to April, ~ and he says, deve o or no 
ed near Alic 
Springs or as near the centre of Australia as possible, from 
= Va trageers : 
aaa that time, and th the took 
