# Typhoon Cempaka Is 2026’s 32nd Storm. Why Japan’s Ogasawara Islands Are Watching

> MKNIRALO — World — WESTERN PACIFIC / FORECAST WATCH

- Published: 2026-11-07
- Estimated reading time: 6 minutes
- Byline: Veda — South Asian Weather and Disaster Preparedness Observer
- Byline disclosure: Veda is a MKNIRALO house editorial byline, not a claim of an independently verified individual. The profile does not imply meteorological certification, government affiliation, field observation or responsibility for official emergency alerts. Readers should follow current weather-agency warnings and local evacuation orders.
- Author profile: https://mkniralo.com/authors/veda/
- Tags: Typhoon Cempaka, Ogasawara Islands, Japan, Western Pacific, Tropical Cyclones, Weather Forecasts
- Cover image: https://mkniralo.com/images/typhoon-cempaka-ogasawara-abstract-2026.svg

Typhoon Cempaka became the 32nd numbered typhoon of 2026 on November 7. A November 7 JMA bulletin places it over waters south of Japan, with a possible turn toward the Ogasawara Islands next week.

Typhoon Cempaka formed near the Mariana Islands on Saturday, November 7, becoming the 32nd numbered typhoon of 2026 in the western North Pacific. That annual milestone has not been reached since 1994. The immediate story, however, is a developing forecast rather than a disaster report: Japan's meteorological agency expects the system to strengthen over open water, then bend eastward toward the vicinity of the Ogasawara Islands around November 10–11. The projected track could bring hazardous winds and seas to the islands, but it does not establish a landfall or any damage. This report uses the Japan Meteorological Agency's 6 p.m. Japan Standard Time analysis on November 7, issued at 6:45 p.m., as its single current-position snapshot.

## What formed, and where was Cempaka at the latest check?

The Japan Meteorological Agency (JMA) classified the developing tropical depression as Typhoon No. 32 at noon Japan Standard Time (JST) on November 7, or 03:00 UTC. It was then near the Mariana Islands, according to the agency's track table reproduced by Japanese weather-services provider AMECS and the day's Japanese news reports. A tropical cyclone becomes a typhoon under JMA terminology when its maximum sustained winds reach approximately 17 metres per second. At formation, the agency assessed maximum sustained winds of 18 metres per second; the number denotes its sequence in the year, not a category of strength.

At 18:00 JST (09:00 UTC) on November 7, in a JMA analysis issued at 18:45 JST, the centre was near 20.2 degrees north, 142.2 degrees east, in the Ogasawara offshore region. The system was moving northwest at about 30 kilometres per hour. Estimated central pressure was 1002 hectopascals, maximum sustained winds 18 metres per second, and peak gusts 25 metres per second. Those are an analysed position and intensity for that hour, not numbers to combine with earlier agency estimates or future forecast values.

Sources:
- [台風情報｜応用気象エンジニアリング](https://amecs.co.jp/wx/typhoon/1/tc2638.html) — Applied Meteorological Engineering Consulting Services (AMECS), reproducing JMA 7 November 18:45 JST bulletin
- [【台風情報】32年ぶりに台風32号（チャンパカ）が発生　マリアナ諸島から西のち東寄りに進み11日ごろ小笠原諸島に接近か（7日正午現在）](https://newsdig.tbs.co.jp/articles/-/3069361?display=1) — Tohoku Broadcasting / TBS NEWS DIG
- [台風32号(チャンパカ)発生　32年ぶりの32号発生　小笠原は影響に注意 - ウェザーニュース](https://weathernews.jp/news/202611/070131/) — Weathernews

## Why does the 32nd storm matter historically?

The number 32 is striking because the last calendar year to reach a 32nd JMA-numbered typhoon was 1994. That does not mean 1994 ended with exactly 32 storms: JMA's historical rankings record 36 that year, tied with 1971 and below the record 39 in 1967. Weathernews' November 7 report says 2026 is the first year this century to reach No. 32, and the ninth year in the record beginning in 1951 to reach at least that level.

It is also important to distinguish the completed-year table from the present year's running count. JMA's official annual-generation page was still dated November 6 when checked and listed 31 storms for 2026, before Cempaka formed the following day. The newly issued storm bulletin and November 7 reporting explain the shift to 32. The 2026 total remains provisional and may be revised in post-season analysis. A high annual storm count does not, by itself, describe where storms travelled, how strong they became or how much harm they caused.

Sources:
- [台風情報｜応用気象エンジニアリング](https://amecs.co.jp/wx/typhoon/1/tc2638.html) — Applied Meteorological Engineering Consulting Services (AMECS), reproducing JMA 7 November 18:45 JST bulletin
- [気象庁｜台風の発生数[協定世界時基準]](https://www.data.jma.go.jp/typhoon/statistics/generation/generation.html) — Japan Meteorological Agency
- [気象庁｜発生数](https://www.data.jma.go.jp/typhoon/statistics/ranking/generation.html) — Japan Meteorological Agency
- [台風32号(チャンパカ)　32年ぶりに「32号」が発生　小笠原は影響に注意 - ウェザーニュース](https://weathernews.jp/news/202611/070181/) — Weathernews
- [台風32号(チャンパカ)発生　32年ぶりの32号発生　小笠原は影響に注意 - ウェザーニュース](https://weathernews.jp/news/202611/070131/) — Weathernews

## What does the November 7 forecast say about the next five days?

In the forecast accompanying JMA's 18:45 JST November 7 bulletin, Cempaka is projected to continue west-northwestward through the early part of the week and strengthen over the sea south of Japan. The agency projected a centre pressure of 980 hectopascals and maximum sustained winds of 35 metres per second for 15:00 JST on Monday, November 9. Those figures are forecast values for November 9, not measurements observed on November 7. Forecast intensity, like the track, can change significantly as new observations arrive.

The same forecast anticipates a turn toward the east-northeast after the westward leg. For 15:00 JST on November 10, it places the forecast centre near 24.7 degrees north and 138.4 degrees east, with maximum winds of 40 metres per second. For 15:00 JST on November 11, it projects a centre near 27.1 degrees north and 146.5 degrees east, east of the Ogasawara Islands. Weathernews described November 10–11 as a potential period of rough weather near the Ogasawara Islands. These are possible outcomes within a forecast envelope, not an exact itinerary or confirmed passage.

Sources:
- [台風情報｜応用気象エンジニアリング](https://amecs.co.jp/wx/typhoon/1/tc2638.html) — Applied Meteorological Engineering Consulting Services (AMECS), reproducing JMA 7 November 18:45 JST bulletin
- [【台風情報】32年ぶりに台風32号（チャンパカ）が発生　マリアナ諸島から西のち東寄りに進み11日ごろ小笠原諸島に接近か（7日正午現在）](https://newsdig.tbs.co.jp/articles/-/3069361?display=1) — Tohoku Broadcasting / TBS NEWS DIG
- [台風32号(チャンパカ)発生　32年ぶりの32号発生　小笠原は影響に注意 - ウェザーニュース](https://weathernews.jp/news/202611/070131/) — Weathernews
- [台風情報の種類と表現方法 | 気象庁](https://www.jma.go.jp/jma/kishou/know/typhoon/7-1.html) — Japan Meteorological Agency

## Why the Ogasawara Islands could be affected without a direct crossing

The Ogasawara Islands are remote Japanese islands in the Pacific, and an offshore tropical cyclone can still matter to island communities and vessels. Wind fields and waves extend away from a storm's centre. Consequently, the question is not simply whether the plotted centre passes over land: the distance of the storm's stronger winds, its changing size and the direction of incoming swell also matter. Weathernews' November 7 assessment warned of possible unsettled conditions and high seas around the islands. It did not report that Cempaka had already struck them.

The projected eastward turn also explains why the same November 7 outlook indicated a low likelihood of a direct approach to Honshu, Japan's main island. That is a forecast assessment, not a guarantee that every part of mainland Japan will avoid all indirect weather or maritime effects. No landfall, storm damage or casualties are established by the reports reviewed for this article. In a fast-changing tropical system, the most responsible distinction is between an observed position, a modelled path, an official local warning and an independently verified impact.

Sources:
- [台風情報｜応用気象エンジニアリング](https://amecs.co.jp/wx/typhoon/1/tc2638.html) — Applied Meteorological Engineering Consulting Services (AMECS), reproducing JMA 7 November 18:45 JST bulletin
- [【台風情報】32年ぶりに台風32号（チャンパカ）が発生　マリアナ諸島から西のち東寄りに進み11日ごろ小笠原諸島に接近か（7日正午現在）](https://newsdig.tbs.co.jp/articles/-/3069361?display=1) — Tohoku Broadcasting / TBS NEWS DIG
- [台風情報の種類と表現方法 | 気象庁](https://www.jma.go.jp/jma/kishou/know/typhoon/7-1.html) — Japan Meteorological Agency

## Why do some bulletins call the same storm 31W?

Readers comparing international trackers may notice another identifier. The US National Weather Service office in Tiyan, Guam, called the system Tropical Storm Cempaka (31W) in its November 7 advisory, while JMA used Typhoon No. 32. These are not separate storms. The two numbers belong to different regional identification systems, and the shared name identifies the same tropical cyclone. The Guam advisory was issued at 19:30 Chamorro Standard Time and gave an observation time of 09:00 UTC, equivalent to 18:00 JST. Its estimates are specific to that agency and time.

The name Cempaka also has a different function from either number. JMA's published list of western North Pacific tropical-cyclone names identifies Cempaka as a name contributed by Malaysia. Storm names provide continuity across languages and services, while operational numbering helps agencies organise their own advisories. Neither a numerical mismatch nor a change in a published wind estimate should be taken as evidence that a second storm has formed. For a coherent story, this report keeps JMA's dated analysis as the measurement baseline.

Sources:
- [台風情報｜応用気象エンジニアリング](https://amecs.co.jp/wx/typhoon/1/tc2638.html) — Applied Meteorological Engineering Consulting Services (AMECS), reproducing JMA 7 November 18:45 JST bulletin
- [National Weather Service](https://forecast.weather.gov/product.php?format=CI&glossary=0&issuedby=PQ1&product=TCP&site=JKL&version=1) — US National Weather Service, Tiyan Guam
- [Japan Meteorological Agency | RSMC Tokyo - Typhoon Center | Names of Tropical Cyclones](https://www.jma.go.jp/jma/jma-eng/jma-center/rsmc-hp-pub-eg/tyname.html) — Japan Meteorological Agency

## How should readers follow the forecast from here?

Track graphics express uncertainty, not a fixed future route. JMA explains that its forecast circles show areas expected to contain the storm centre at the specified times with a probability of roughly 70 percent. They do not measure the full size of the cyclone, and the line between their centres is not a track the storm is certain to follow. As the forecast extends several days ahead, the circle generally widens; an island inside or near an envelope therefore faces a possibility to watch rather than a predetermined event.

The next checkpoints are new JMA track and intensity bulletins, updated high-wave and wind warnings for Ogasawara, and any instructions from local authorities affecting travel, harbour operations or other safety decisions. The November 9 strengthening and November 10–11 island approach should be reassessed whenever those bulletins are issued. Readers making real-world safety decisions should use current official warnings, not this dated explainer. As of the November 7 18:00 JST JMA analysis used here, Cempaka's formation and present location were confirmed; its later route, intensity and any resulting impacts remained uncertain.

Sources:
- [台風情報｜応用気象エンジニアリング](https://amecs.co.jp/wx/typhoon/1/tc2638.html) — Applied Meteorological Engineering Consulting Services (AMECS), reproducing JMA 7 November 18:45 JST bulletin
- [台風情報の種類と表現方法 | 気象庁](https://www.jma.go.jp/jma/kishou/know/typhoon/7-1.html) — Japan Meteorological Agency
- [気圧配置 台風に関する用語 | 気象庁](https://www.jma.go.jp/jma/kishou/know/yougo_hp/haichi2.html) — Japan Meteorological Agency

## About this article

This article reflects the public sources available on the publication and update dates shown above. For developing stories, follow the linked source pages for subsequent statements or decisions.

## Sources and further reading

- [台風情報｜応用気象エンジニアリング](https://amecs.co.jp/wx/typhoon/1/tc2638.html) — Applied Meteorological Engineering Consulting Services (AMECS), reproducing JMA 7 November 18:45 JST bulletin (published 2026-11-07) (accessed 2026-11-07)
- [【台風情報】32年ぶりに台風32号（チャンパカ）が発生　マリアナ諸島から西のち東寄りに進み11日ごろ小笠原諸島に接近か（7日正午現在）](https://newsdig.tbs.co.jp/articles/-/3069361?display=1) — Tohoku Broadcasting / TBS NEWS DIG (published 2026-11-07) (accessed 2026-11-07)
- [気象庁｜台風の発生数[協定世界時基準]](https://www.data.jma.go.jp/typhoon/statistics/generation/generation.html) — Japan Meteorological Agency (accessed 2026-11-07)
- [気象庁｜発生数](https://www.data.jma.go.jp/typhoon/statistics/ranking/generation.html) — Japan Meteorological Agency (accessed 2026-11-07)
- [台風32号(チャンパカ)　32年ぶりに「32号」が発生　小笠原は影響に注意 - ウェザーニュース](https://weathernews.jp/news/202611/070181/) — Weathernews (published 2026-11-07) (accessed 2026-11-07)
- [台風32号(チャンパカ)発生　32年ぶりの32号発生　小笠原は影響に注意 - ウェザーニュース](https://weathernews.jp/news/202611/070131/) — Weathernews (published 2026-11-07) (accessed 2026-11-07)
- [台風情報の種類と表現方法 | 気象庁](https://www.jma.go.jp/jma/kishou/know/typhoon/7-1.html) — Japan Meteorological Agency (accessed 2026-11-07)
- [National Weather Service](https://forecast.weather.gov/product.php?format=CI&glossary=0&issuedby=PQ1&product=TCP&site=JKL&version=1) — US National Weather Service, Tiyan Guam (published 2026-11-07) (accessed 2026-11-07)
- [Japan Meteorological Agency | RSMC Tokyo - Typhoon Center | Names of Tropical Cyclones](https://www.jma.go.jp/jma/jma-eng/jma-center/rsmc-hp-pub-eg/tyname.html) — Japan Meteorological Agency (accessed 2026-11-07)
- [気圧配置 台風に関する用語 | 気象庁](https://www.jma.go.jp/jma/kishou/know/yougo_hp/haichi2.html) — Japan Meteorological Agency (accessed 2026-11-07)