| Station:Macquarie
Isl. |
|
September |
2003 |
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Long |
Long |
Long |
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| Element |
This |
Term |
Term |
Term |
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Month |
Mean |
Lowest |
Highest |
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| Station Level Pressure in
hectopascals |
|
|
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|
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| Highest |
1028.9 |
|
|
1034.2 |
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| Lowest |
951.4 |
|
944.2 |
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|
| Mean 9am
& 3pm |
989.0 |
997.1 |
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| |
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| Maximum
Temperature in Degrees Celsius |
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| Highest |
7.2 |
on the 17th |
|
08.6 |
|
| Lowest |
1.4 |
|
-01.4 |
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| Mean |
4.8 |
05.4 |
03.8 |
06.5 |
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| Minimum Temperature in Degrees Celsius |
|
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|
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| Highest |
4.0 |
|
|
06.2 |
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| Lowest |
-2.1 |
on the 27th |
-08.7 |
|
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| Mean |
0.9 |
01.6 |
-00.3 |
03.5 |
|
| Daily Sunshine
in hours |
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| Daily Sunshine in hours |
|
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|
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| Highest |
9.5 |
on the 10th |
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| Lowest |
0.0 |
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| Mean |
3.2 |
02.2 |
00.9 |
03.6 |
|
| Precipitation in millimetres |
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| Precipitation in
millimetres |
|
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| Monthly Total |
59.2 |
071.4 |
025.0 |
134.0 |
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| Highest daily rainfall |
12.2 |
on the 2nd |
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|
| Wind in kilometres per hour |
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| Wind in kilometres per
hour |
|
|
|
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| Total Wind
Run |
22350 |
22809 |
12210 |
32700 |
|
| Mean Speed |
31.0 |
31.45 |
17 |
45.4 |
|
| Max Gust
Speed |
116.6 kph from West at 22:06 on 24th |
|
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| Phenomena - number of days |
|
|
|
|
| Strong Wind |
20 |
16.3 |
|
30 |
|
| Gales |
07 |
05.9 |
|
26 |
|
| Blizzard |
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|
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| Rain |
24 |
25.9 |
19 |
30 |
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| Snow |
12 |
07.5 |
|
22 |
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| Blowing Snow
vis<1km |
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| Hail |
2 |
04.9 |
|
15 |
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| Fog |
6 |
02.7 |
|
09 |
|
| Frost |
11 |
02.5 |
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| Mist |
12 |
09.0 |
|
27 |
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| COMMENT |
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| September
weather averages on Macquarie Island have mostly approached their long
term |
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| Means.
The middle of the month was characterised by an extended period of high
pressure |
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| and low wind, which helped to make life very pleasant on the
island. |
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| Perhaps, as a result of the High pressure system, the number of
days of Frost was |
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| markedly
higher than normal. We record Frost when the overnight air temperature |
|
| immediately
above the ground is equal to or lower than minus 0.9 deg C. |
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| Precipitation was below average, and noticably lower than the
September record |
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| of 134 mm, recorded last year. |
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| Tim James, Snr Observer. |
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