Announced details
The capture rate for heavy rain of at least 10 mm/h improved by 8 percentage points one hour ahead and 10.1 percentage points two and three hours ahead, compared with the current model.
The Threat Score improved to approximately 1.3 times the current level one hour ahead and approximately 1.6 times the current level two and three hours ahead.
Mihama Ward, Chiba City (head office of Weathernews Inc.)
In this announcement the company addresses none of Contract Value / Offering price / Impact on Business Performance.
According to Sensor Tower (as of April 2026)
Chiba torrential rain: economic damage from flooding of homes and other impacts estimated at up to ¥11.1 billion; recalculated to reflect actual damage (Second Report)
| Item | Details |
|---|---|
| Names of Products / Services Covered | AI-Nowcast, Weathernews, My Weather |
| Launch date | 15 October 2026 (fully implemented) |
| Applicable area | Weather forecasting, Precipitation forecasting, Disaster preparedness, Disaster risk reduction |
| Location | Mihama Ward, Chiba City (head office of Weathernews Inc.) |
| Quantitative Effects | The capture rate for heavy rain of at least 10 mm/h improved by 8 percentage points one hour ahead and 10.1 percentage points two and three hours ahead, compared with the current model., The Threat Score improved to approximately 1.3 times the current level one hour ahead and approximately 1.6 times the current level two and three hours ahead. |
| Source | According to Sensor Tower (as of April 2026), Chiba torrential rain: economic damage from flooding of homes and other impacts estimated at up to ¥11.1 billion; recalculated to reflect actual damage (Second Report) |
Items this document does not state (12)
These are items the company does not state in this document. We do not leave them blank, nor fill them in from other sources or by inference.
The reasons the company gives
The company's own explanation, not something inferred from the numbers.The aim is to forecast with greater accuracy rain clouds that develop rapidly, such as line-shaped precipitation systems and sudden thunderstorms, helping to reduce weather-related disasters and support everyday disaster preparedness.