Tropical Storm Nari moves northward, with possible landfall Tuesday
The agency is warning residents to remain on alert for high winds, heavy rain, high waves and the risk of landslides and flooding in low-lying areas. River levels may rise rapidly, and there is a risk of lightning strikes and sudden gusts.
As of 10 a.m. Monday, Nari, or taifū no. 5, as it is known in Japanese, was located roughly 180 kilometers southeast of Choshi, Chiba Prefecture, in the Pacific, traveling north at a speed of 35 kph. The storm had a central pressure of 985 hectopascals, with sustained winds near the center measuring 90 kph and peak gusts reaching 126 kph. Winds stronger than 54 kph were reported within a radius of up to 500 km from the storm's center.
The storm is forecast to pass around 140 km southeast of the city of Ishinomaki, in Miyagi Prefecture, by 6 p.m. Monday. Sustained winds are forecast to intensify to 108 kph, with gusts peaking at 144 kph. Storm-force winds — those exceeding 90 kph — may extend as far as 185 kilometers to the east and 110 kilometers to the west of the center.
By 6 a.m. Tuesday, Nari is projected to reach an area approximately 80 km west of the city of Abashiri in Hokkaido. At that stage, it is expected to weaken somewhat, with its central pressure rising to 998 hectopascals. Sustained winds will likely decrease to 65 kph, with gusts topping out around 90 kph. The storm is forecast to transition into a tropical cyclone over the Sea of Okhotsk after passing over northern Japan.
Strong winds are expected to impact eastern Japan throughout Monday, extending into Tuesday in the north. In the Kanto and Tohoku regions, maximum sustained winds on Monday could reach 90 kph, with gusts of up to 126 kph. The Izu Islands are forecast to see winds of up to 65 kph, with gusts reaching 90 kph.
On Tuesday, Hokkaido is expected to experience sustained winds of 83 kph and gusts up to 126 kph, while winds in Tohoku may reach 72 kph with peak gusts of 90 kph.
Rainfall is expected to be significant, with the possibility of thunderstorms and heavy downpours. In the 24-hour period ending at 6 a.m. Tuesday, rainfall totals could reach 120 millimeters in the Kanto-Koshin and Tohoku regions, as well as on the Ogasawara Islands, while Hokkaido may receive up to 100 mm. Between 6 a.m. Tuesday and 6 a.m. Wednesday, rainfall may total up to 150 mm in Kanto-Koshin and 80 mm in Hokkaido.
Rough seas are forecast to accompany the storm, particularly along the Pacific coast. On Monday, waves could reach up to 7 meters in Tohoku, 6 meters in the Kanto region, and 4 meters around the Izu and Ogasawara islands. By Tuesday, wave heights are expected to remain at 7 meters in both Hokkaido and Tohoku, decrease slightly to 5 meters in Kanto and the Izu Islands, and remain at 4 meters near the Ogasawara Islands.
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