# Typhoon of August 5th to 23rd, 1924/Track of the Typhoon

II. — TRACK OF THE TYPHOON OF AUGUST 5$^{TH}$ To 23$^{RD}$ 1924.
(See the annexed map.)
The actual typhoon had been preceded by another cyclone, haying probably the same origin; it almost frequently happens, chiefly in the middle of the season, that typhoons thus travel in pairs or follow each other at very short intervals. The first centre having passed near the Bonin Is., on the 4th,, travelled in two days to Kagoshima (Kiusiu) then crossing the Yellow Sea, in a NW direction, landed ​in Shantung, on the 8th,, not far from Tsingtao; after which crossing that province and Chihli, on the 9th., it proceeded to Manchuria where it disappeared, on the 10th, inclining gradually to the NE. During the first days, its presence had somewhat eclipsed that of the second cyclone that was following on its heels at a short distance.
Originating likely, as well as its forerunner, on the Pacific, near the Eastern Marianas, our typhoon passed, from the 5th, to the 6th. August by the south of the Bonin Is. It followed at first a very regular course towards the WNW, and crossed the 25th parallel, on the 6th, near the 140th meridian. Its presence to the SW of the Bonin Is, was manifested, on the 7th, by a new falling of about 10$^{mm}$ of the pressure that had just begun to rise after the passage of the first centre, and by strong ESE breezes, veering to SE on the following day, At the same time, northerly winds started blowing at Naha, and their persistence, joined to the decrease of the pressure, left no doubt about the approach of a serious disturbance, Indeed, the centre passed between that island and Oshima (Naze), crossing the meridian of the last named place after 6 p. m. on the gth, and that of Naha between 9 and 10 a. m. on the 10th; the minimum at Naze was 740$^{mm}$ 7, and at Naha 737mm 2: we give here the observations of the 10th,
| | 6 a. m. | 6 a. m. | Noon. | Noon. |
| | Barom. | Wind | Barom. | Wind |
| Naha | 738$^{mm}$ | SW. 8 | 737$^{mm}$. 5 | SSW 9 |
| Oshima | 745$^{mm}$ | E 4 | 746$^{mm}$. 5 | ESE 5 |
Heavy rain accompanied the passage of the vortex which was already inclining ostensibly towards the W, not far from the 27th degree of latitude, Here it was that the irregular motion began: while the barometer rose at the two preceding stations, it was falling at Ishigakijima, in the Meiaco Sima group, more deeply than on the coast of China, and at the same time the wind had a backing from NW to WNW, increasing to the force 9 which is a strong gale. In northern Formosa, the pressure was falling too, while the wind was veering from WSW to W and blowing with increasing strength,
During the 11th. and the 12th. Ishigakijima was under the full force of the storm; the minimum of pressure appears to have taken place early in the morning of the 12th, and at noon on the same day the report stated that the barometer was rising, while the wind from W force 9, began to veer to WNW (force 9).
From the data we have, scanty as they are, we may infer that between the 11th and the 12th the centre, after hacking to SW, then to the S, and thus approaching the island, had continued to recurve back to the E, then towards the NE, being thus returning in the direction of Naha. The movements of the cyclone between the two islands are well traced in the successive telegrams received here, day by day, from Tôkyô.
| | | Naha | Naha | Ishigakikjima | Ishigakikjima |
| Date | Hour | Barom. | Wind | Barom. | Wind |
| 11 | 6 | 743.mm 5 | SSE 4…… | 745.mm 5 | W 9 |
| | 12 | 745.  5 | SE 6…… | 744.  0 | W 9 |
| 12 | 6 | 744.  5 | SE 6…… | 739.  0 | W 9 |
| | 12 | 744.  0 | ESE 6…… | 740.  5 | WNW 9 |
| 13 | 6 | 738.  5 | SSE 6…… | 743.  5 | W 7 |
| | 12 | 739.  5 | SSE 6…… | 744.  0 | WNW 7 |
| 14 | 6 | 731.  5 | S  8…… | 746.  0 | WNW 6 |
| | 12 | 730.  0 | SW 7…… | 747.  5 | WNW 7 |
The movement was well felt as far as Oshima, where the pressure began again to fall, and the wind to blow with force, backing gradually from ESE to NE. Thus the centre came to pass a second time between that station and Naha, just in a direction opposite that of the first time, on the morning of the 15th, five days after the first passage, and very close to Naha: strong NE to NNE winds prevailed at Naze, while whole gales from W, force 10, swept across the island of Naha.
The documents at our disposal are not sufficient to follow very closely the excursion made by the cyclone to the SE of the Loochoos. Thanks to the bulletin of the Kobe Marine Observatory, we have got a part of the report of the Nanking Maru (O. S. K.) which was in close contact with the track in that region. Thus we are enabled to state that, on the 17th, about noon, the vortex was near lat, 25° and long. 130°; after crossing the north of the island of Naha, it had veered to the SE to reach that position on the 16th: there an apex was traced, with convexity towards the south; it then commenced to move back to the NE and later on to the N and the NNW, thus returning again towards Oshima, where after a short rise the barometer began anew to fall, and the wind to freshen, first from NNE then from N and NNW, showing that the station was again threatened. The minimum was at the shortest distance, on the 18th, about 1h p. m. when the pressure fell as low as 727mm, with a NNW gale, backing soon to the SW.
Kiusiu was now the next place to be visited by the typhoon which after passing Oshima followed again the accustomed path, and continued to trace the parabolic curve it had abandoned not far from there, since the 8th, that is for 10 days. From the regular observations cabled from Kagoshima and Nagasaki, combined with the reports of steamers, published by the Observatory of the Imperial Navy at Kobe, (Peking Maru, Sekke Maru, Kohso Maru, Madras Maru) it is easy to follow the centre of the typhoon that was travelling in a NNW direction, since the 17th: it passed by the W of Van Diemen Strait and Kagoshima, early on the morning of the 19th, entered afterwards the Korea Strait, and advanced on the E side of Itsuhara Is. on the 20th, between 4h and 5h p. m. (minimum 733mm): ​it had begun already to veer towards the NE, and it was in that direction that it crossed the Sea of Japan, with increasing speed: about 13, 8 nautical miles an hour, It passed through the Tsugaru Strait during the night of the 22nd, as shown by the variations of pressure and the backing of the wind from ESE to WNW ( force 7 ) . at Hakodate; then it darted across the Pacific, along the south of the Kurile Is, in the direction of the ENE, a course very familiar te many typhoons, At Nemuro, the pressure fell below 749mm, on the morning of the 23rd, and the wind freshened while backing from ESE to NNW and NW.