Hurricane and Tropical Cyclones

Tropical Depression

Unnamed Unknown

Storm Activity: Sep 17, 1931 - Sep 18, 1931

Peak Wind

--

Lowest Pressure

--

Duration

24 hours

Last Position

27.1 N 133.8 E

Storm Track

Sep 17 – Sep 18

Storm Category

1. Tropical Depression Peak < 39 mph
2. Tropical Storm 39-73 mph
3. Category 1 74-95 mph
4. Category 2 96-110 mph
5. Category 3 111-129 mph
6. Category 4 130-156 mph
7. Category 5 157+ mph

Intensity

Sustained wind at each observation

Peak wind

--

Peak category

Tropical Depression

Lowest pressure

--

Sep 18 · 22:00 GMT -- -- Unknown

39

74

111

157

Sep 17Sep 18

Storm Track Statistics

Date↓	Time	Lat	Lon	Wind	Pressure	Storm Type	Category
Sep 18	22:00 GMT	27.1	133.8	--	--	Unknown	--
Sep 18	21:00 GMT	26.89	133.74	--	--	Unknown	--
Sep 18	18:00 GMT	26.27	133.56	--	--	Unknown	--
Sep 18	15:00 GMT	25.64	133.39	--	--	Unknown	--
Sep 18	12:00 GMT	25.02	133.22	--	--	Unknown	--
Sep 18	10:00 GMT	24.6	133.1	--	--	Unknown	--
Sep 18	09:00 GMT	24.38	133.17	--	--	Unknown	--
Sep 18	06:00 GMT	23.73	133.37	--	--	Unknown	--
Sep 18	03:00 GMT	23.08	133.57	--	--	Unknown	--
Sep 18	00:00 GMT	22.43	133.77	--	--	Unknown	--
Sep 17	22:00 GMT	22	133.9	--	--	Unknown	--

Learn more about Unnamed Unknown and the 1931 Western Pacific hurricane season in our hurricane archive.

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