✨ Meteorological Observations
RESULTS OF METEOROLOGICAL OBSERVATIONS
DEDUCED FROM DAILY REGISTERS KEPT AT THE
GOVERNMENT STATION, CHRISTCHURCH.
For SEPTEMBER, OCTOBER, and NOVEMBER, 1870.
Latitude, 43 deg. 32 min. 16 sec. S. | Longitude, 172 deg. 38 min. 59 sec. E.
Height above Sea, 21 feet. | Distance from Sea, 5 miles.
| SEPTEMBER. | OCTOBER. | NOVEMBER. | |
|---|---|---|---|
| Barometer | |||
| (corrected and reduced to 32° | |||
| Fahrenheit at Sea Level.) | |||
| Mean Atmospheric Pressure for | |||
| Month | 30.077 | 29.972 | 29.812 inches |
| Highest Pressure ... | ... | (6th) 30.479 | (24th) 30.442 |
| Lowest Pressure ... | ... | (18th) 29.402 | (2nd) 29.517 |
| (24th) 29.328 |
| Temperature in Shade. | | | |
| Approximate Mean Temperature |
| for Month | 48.0 | 55.0 | 59.8 Fah. |
| Mean of Highest Daily |
| Temperature ... | 56.1 | 64.1 | 69.4 |
| Mean of Lowest Daily |
| Temperature ... | 41.0 | 45.9 | 50.3 |
| Highest in Month ... | (30th) 69.8 | (22nd) 80.6| (23rd) 83.8 |
| Lowest in Month ... | (32nd) 29.7 | (4th) 33.3 | (18th) 38.0 |
| Mean Daily Range ... | 14.1 | 18.2 | 19.1 |
| Mean Temperature of |
| Evaporation ... | 45.3 | 50.7 | 55.3 |
| Solar Radiation. | | | |
| Mean ... | ... | 110.3 | 123.8 | 132.4 |
| Highest in Month ... | ... | (29th) 130.2| (22nd) 141.9| (28th) 159.7|
| Terrestrial Radiation. | | | |
| Mean ... | ... | 28.8 | 32.9 | 38.8 |
| Lowest in Month ... | ... | (22nd) 10.0| (4th) 17.3 | (18th) 22.1 |
| Hygrometer (deductions). | | | |
| Mean Temperature of Dew |
| Point ... | 42.3 | 46.6 | 51.4 Fah. |
| Mean Tension of Vapour ... | 0.270 | 0.318 | 0.379 inches|
| Mean Humidity (Saturation = |
| 100) ... | 81 | 73 | 74 |
| Rain. | | | |
| Total Rainfall ... | 1.212 | 1.228 | 0.755 inches|
| Greatest Rainfall on one Day,|
| registered at 9.30 a.m. for |
| previous 24 hours ... | (11th) 0.284| (27th) 0.460| (8th) 0.238 |
| Wind. | | | |
| Mean Velocity in Miles per |
| day ... | 147 | 162 | 180 miles |
| Greatest Velocity in Miles |
| per day, registered at 9.30 |
| a.m. for previous 24 hours | (26th) 420 | (9th) 320 | (27th) 323 |
| Cloud. | | | |
| Mean Amount at 9.30 a.m. |
| (0 = clear; 10 = overcast.) | 5.1 | 3.8 | 5.1 |
| Total Evaporation ... | ... | 3.624 | 5.273 | 5.680 inches|
| Number of days on which the Wind blew from each point at 9.30 a.m.:- |
| SEPTEMBER. | N. 1 | N.E. 8 | E. 10 | S.E. 3 | S. 8 | S.W. 0 | W. 2 | N.W. 0 | Calm 8 |
| OCTOBER. | N. 1 | N.E. 13| E. 3 | S.E. 7 | S. 4 | S.W. 0 | W. 0 | N.W. 2 | Calm 0 |
| NOVEMBER. | N. 2 | N.E. 6 | E. 2 | S.E. 4 | S. 12| S.W. 2 | W. 0 | N.W. 2 | Calm 0 |
REMARKS.—The Weather during the three months has been unusually dry, less rain having fallen than has been registered for the same period since Observations have been taken at this Station. The average total fall for September, October, and November, from 1864—69 inclusive, was 6.431 inches; the total fall this year for these months was 3.190. Sleet fell on 1st September. On 3rd October a smart shock of earthquake was felt in the north of this Island, and in Wellington. The month of November was almost uninterruptedly fine. There were heavy N.W. gales on 8th October and 24th of November.
R. MAINWARING, Observer, Christchurch.
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Canterbury Provincial Gazette 1870, No 61
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🎓 Meteorological Observations for Christchurch
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- R. Mainwaring, Observer, Christchurch