✨ Meteorological Cyclone Data
THE NEW ZEALAND GAZETTE. 345
- It will be more convenient first to trace the
course of the cyclone in the N. W. corner of the Bay,
where we have land observations* and those of the
floating light-ships to guide us, and afterwards to
follow it back as far as possible to its origin.
recorded barometer is at 4 a.m., when the wind had
veered to S.E. The centre, which had been approach-
ing Saugor from about south up to 3 a.m., must have
curved round between 3 a.m. and 5 a.m., from which
hour it moved away towards west, bearing about
S.W. from Saugor.
-
On the afternoon of the 29th, Saturday, the
wind moderated, and a lull was experienced north of
the area of low pressure in the Bay. This was
probably due to the breaking up of a vortex, which
the log of the "Coldstream" seems to show was
formed, or partially formed, on the 28th and the
morning of the 29th. This lull, however, was of
short duration. At the Mutlah floating light station,
the wind, which had moderated at noon, at 4 p.m.
had increased to a strong gale; with very unsettled
appearances. At midnight it was blowing a hard
gale, with constant heavy rain. On the morning of
the 30th, Sunday, a heavy gale was blowing from the
eastward, with continuous torrents of rain. At noon
the barometer was falling rapidly, the wind blowing
with the force of a hurricane from the east. The
barometer was lowest at 6.30 p.m., and between this
and 8 p.m. the centre of the storm must have been
nearest to the Mutlah light-ship, the "Comet;" but
if the directions of the wind are correctly given, the
"Comet" was outside the radius of the cyclone. -
The following notes on the cyclone were
forwarded to me by Mr. Richards, Civil Surgeon at
Balasore :-
| Date. | Hour. | Barometer unreduced and uncorrected. | Winds. | Remarks. |
|---|---|---|---|---|
| July 1 | 5 a.m. | 28.70? | W.N.W. | Blowing very hard. |
| " | 7.30 " | 28.62 | N.W. | Increasing. |
| " | 8.30 " | 28.28 | N.E. | Blowing in terrific |
| " | 9.30 " | 28.41 | E.N.E. | gusts. |
| " | 11.30 " | 28.50 | E. | Still blowing very |
| " | 12 noon | 28.74 | E. | hard. |
| " | 1 p.m. | 28.90 | E. by S. | Decreasing. |
| " | 2 " | 29.05 | S.E. | Subsiding. |
| " | 3 " | 29.09 | S. by E. | Blowing. |
| " | 4 " | 29.13 | S. by W. |
Rainfall 6 inches.
-
The observations of the floating light-vessel
"Star" at the Ridge Station, latitude 20° 49′ 45″ Ν.,
longitude 87° 41′ 19″ E.; the floating light-vessel
"Meteor" at the lower Gasper Station, latitude
21° 26′ 53″ N., longitude 88° 6' E.; the steam-ship
"Madras" at anchor in Saugor Roads, and those at
Saugor Island and Balasore, afford sufficient data
for determining approximately the track of the
cyclone, assuming that the latitudes and longitudes
of the floating light-vessels (which were not given
with the extracts of their logs which I received, but
which I have since obtained from Captain Falle,) are
correct. -
In applying these observations to determine
the track of the centre, it should be observed that the
directions of the wind are probably only very approxi-
mate, and that before Balasore came within the
cyclone's radius the prevailing wind must have been
north-westerly. It is probable that the first recorded
cyclone wind was from N.E. at 8.30. At all events
it is tolerably certain, from the directions of the wind
at Saugor Island and at the "Meteor," that the
centre of the storm could not at any time have been
north of a line drawn between Balasore and Saugor.
Storms generated in the north of the Bay so late in
the season seldom possess sufficient energy to travel
inland, and generally burst up when they come in
contact with the land. The present storm was not
one of great violence, and was unusually small in
dimensions, its radius probably never exceeding 40
or 50 miles. It advanced in a northerly direction
very slowly from midnight, retarded by friction with
the land. Turning round to the westward, along a
path of less resistance, with probably a much smaller
radius, it increased in extent and velocity of pro-
pagation as it moved over a freer course towards
Balasore. -
From noon to midnight on the 30th the
"Star" experienced terrific squalls, the wind being
steady from N.N.E. up to 8 p.m., when it veered to
N. The centre of the storm had been thus approach-
ing the "Star" from S.E., and at 8 p.m. its bearing
was about E.S.E. Two hours later the wind at
the "Meteor," which had been steady at N.E.,
veered to E.N.E., the centre bearing consequently
about S. At 10 p.m. the centre of the storm was
about in latitude 20° 40′ N., longitude 87° 55′ E. At
11 p.m. the wind at the "Star" had veered to
N.N.W., while the centre continued to bear about
south from the "Meteor." The position of the
centre at 11 p.m. was about in latitude 20° 50′ N.,
longitude. 87° 53′ E. At 11.45 p.m. the "Star"
parted and drifted from the station. At midnight
she had the wind W., the centre bearing about
N.N.E. At the same time the "Meteor" had the
wind W., the centre bearing about S.S.W. Position
of centre at midnight about in latitude 20° 55' Ν.,
longitude 87° 50′ Ε. -
The following table shows the approximate
track of the centre in the N.W. corner of the Bay.
I have already indicated the course which it pursued
after passing Balasore :-
| Hour. | Latitude N. | Longitude E. |
|---|---|---|
| 10 p.m. | 20° 40′ | 87° 55' |
| 11 " | 20° 50′ | 87° 53' |
| 12 midnight | 20° 55' | 87° 50′ |
| 3 a.m. | 21° 8' | 87° 45' |
| 5 " | 21° 10' | 87° 35' |
| 8.30 a.m. | 21° 9' | 87° 10' |
| 9.30 " | 21° 8' | 87° 0′ |
| 11 " | 21° 7' | 86° 45' |
- At Saugor Island the wind had been steady all
day from N.E., and did not veer until 12.30 a.m.,
when it went round to E.N.E., which was probably
the first cyclone current. It continued steady at
E.N.E. until 3 a.m., veering between this and 5 a.m.
to E.S.E., at which point it remained until 8.30 a.m.
At 3 a.m. the barometer was lowest, and between
this and 4 a.m. the centre was probably nearest.
The "Madras," at anchor in Saugor Roads, ex-
perienced the same winds and changes, and her
barometer was lowest at 4 a.m. From midnight to
3 a.m. the storm was moving nearly northwards and
approaching Saugor. I have no observations from
the "Meteor" from midnight to 4 a.m. The lowest
- Land observations not printed herewith.
- The "Coldstream," running E.S.E. from
1 p.m. on the 27th, encountered on the 28th and the
morning of the 29th what appears to have been the
southern quadrant of a cyclone. Her position is,
however, unknown. At 1 a.m. on the 29th her
course was changed to N. by E., and at 9 a.m. to
N. by W. A south or S. E. course, if such had been
possible, would then, apparently, have taken her
completely out of the influence of the cyclone. She
had a W.S.W. and S.W. by W. wind. At 9 a.m. the
gale had moderated slightly, but at 1 p.m. was "in-
creasing, with heavy rain and every appearance of
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Continuation of Cyclone Track Analysis and Meteorological Observations
(continued from previous page)
🏛️ Governance & Central Administration14 May 1873
Cyclone tracking, Meteorology, Barometer readings, Ship observations, Saugor, Mutlah light-ship, Balasore, Tables
- Mr. Richards, Civil Surgeon at Balasore
NZ Gazette 1873, No 34