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Chinese high-altitude balloon crosses over Taiwan island for first time amid overflight campaign

Incident Report

Fact Sheet
Date2 Jan 2024
TrackerChina-Taiwan Tensions
TypeIncursion
Location Taiwan Strait
23.57, 119.58 (approximate)
What Happened

A Chinese high-altitude balloon crossed directly over Taiwan island for the first time on January 2, 2024, part of a sustained campaign of balloon overflights detected between December 2023 and April 2024 that spanned the run-up to Taiwan's January 13 presidential election. Activity peaked on February 10-11, when a record six balloons crossed the Taiwan Strait median line within 24 hours, several passing over the island. Taipei called the flights psychological pressure and an aviation-safety threat; Beijing described them as meteorological.

Measured Footprint
Series That day Prior 30-day avg Week after vs before
ADIZ aircraft 2 -26% 2.7 -50% (18 → 9)
Aircraft detected 9 -6% 9.6 +7% (59 → 63)
PLAN ships 4 -26% 5.4 +18% (28 → 33)
Daily figures from Taiwan Ministry of National Defense around January 2, 2024; the day's value is compared with the trailing 30-day average. Week comparisons are shown only when the series covers both full weeks.
Taiwan Strait
Taiwan Strait
Marker placed at sea area precision.

Activity Around the Incident

PLA aircraft in Taiwan's ADIZ, two weeks either side
December 19, 2023 — 1 aircraft Dec 19 December 20, 2023 — 0 aircraft December 21, 2023 — 3 aircraft December 22, 2023 — 3 aircraft December 23, 2023 — 11 aircraft Dec 23 December 24, 2023 — 0 aircraft December 25, 2023 — 3 aircraft December 26, 2023 — 3 aircraft December 27, 2023 — 0 aircraft Dec 27 December 28, 2023 — 12 aircraft 12 December 29, 2023 — 0 aircraft December 30, 2023 — 1 aircraft December 31, 2023 — 1 aircraft Dec 31 January 1, 2024 — 1 aircraft January 2, 2024 — 2 aircraft (incident day) 2 Jan 2 January 3, 2024 — 1 aircraft January 4, 2024 — 2 aircraft Jan 4 January 5, 2024 — 1 aircraft January 6, 2024 — 0 aircraft January 7, 2024 — 1 aircraft January 8, 2024 — 2 aircraft Jan 8 January 9, 2024 — 1 aircraft January 10, 2024 — 2 aircraft January 11, 2024 — 2 aircraft January 12, 2024 — 1 aircraft Jan 12 January 13, 2024 — 0 aircraft January 14, 2024 — 1 aircraft January 15, 2024 — 2 aircraft January 16, 2024 — 2 aircraft Jan 16
Daily counts from Taiwan Ministry of National Defense; the highlighted bar is the incident day, January 2, 2024.

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