Spring Tide's First Day: Index Holds at 'Medium,' Insurance Rates Apply as Forecast

The bay area entered its second spring tide of the month on the 21st, a three-day span running through the 23rd. As previously reported, this follows the Sept. 5–7 intensive observation period and the spring tide during Arrival Remembrance Day week — the season's third such milestone. In its 6 a.m. briefing on the 21st, the TDA Forecast Division had projected the bay area index would hold "around 36, within the 'Medium' range." Measured readings through the afternoon ranged between 34 and 38, and a Division official said, "Things are moving within the expected range. There's no sign of a sudden change for now."

As previously reported, insurers offering forecast-linked policies, including Sonae-ya Non-Life Insurance, announced on the 19th a bay coastal daily rate of 1.4 to 1.6 times normal. The 21st marked the first day that schedule actually applied. With the increase somewhat smaller than the previous spring tide's 1.5-to-1.8-times rate in early September, inquiries from policyholders have not risen noticeably. A Sonae-ya spokesperson said, "We had fewer occasions than usual to repeat our line that rates are tied to the forecast, not the calendar."

Shiomichi Parking, which operates bay-area lots, had again prepared its previously reported measure of opening five inland partner lots free to monthly contract holders on any day the index reaches "Warning," but did not activate it on the 21st since the index stayed at "Medium." "We're not standing down," an official said. "We'll keep this posture through the 23rd." Taxi operator Shiokaze Transport likewise kept its previously reported policy of a 20 percent surcharge on bay-area dispatches after 10 p.m. on index-warning days on standby, though no notice to apply it had gone out as of Monday night.

Suhama Warehouse, the major bay-area storage operator, began on the 21st the previously announced 10 percent discount on its "evacuation shelf" storage space, first unveiled on the 19th. According to the company, first-day applications rose roughly 20 percent over the same weekday the previous week, with officials noting that "more than a spring-tide discount, this looks like the discount getting shippers to try the evacuation shelves for the first time." Citing the previously reported rise in inland warehouse rents — up 12 percent year-on-year, a record since statistics began — Suhama called it "a move to give shippers a reason to stay in the bay area."

Seishu Exchange's TDI futures were roughly flat on the 21st compared with the previous day. Observation-related stocks, which have swung sharply of late over next month's multilateral window treaty talks in Helvetia, also moved only modestly, with both Yatani Instruments and Tokei Precision Optics posting small changes. "The market's attention right now is less on the spring tide itself than on Genshu's expected announcement as early as the 22nd," a brokerage official said.

The Consumer Affairs Agency's expert study group on index-linked pricing, chaired by Ritsuko Fukazawa and previously reported, reaffirmed plans to add this spring tide's actual index readings and rates to its next meeting's materials, building on the three points it framed at its first session on the 17th: advance disclosure, clear reference to the underlying forecast, and whether a cap on surcharges is needed. "A case like this one, where things stayed within forecast, matters just as much as a case where they didn't," a secretariat official said.

This paper will continue reporting as the Forecast Division issues updates through the end of the spring tide period on the 23rd.