ECMWF and GFS ensemble outputs consistently project a strong warm advection pattern over Kanto, with diurnal maxima pegging at 20-21°C for May 6. Current JMA forecasts corroborate this, indicating a 20°C peak. A 15°C high is a substantial -5°C thermal anomaly from model consensus and current synoptic conditions. No frontal system or significant cold air mass is anticipated to depress temperatures to that level. Expecting above-average isotherms. 95% NO — invalid if a sudden polar vortex shift occurs.
ECMWF and GFS ensemble outputs consistently project a strong warm advection pattern over Kanto, with diurnal maxima pegging at 20-21°C for May 6. Current JMA forecasts corroborate this, indicating a 20°C peak. A 15°C high is a substantial -5°C thermal anomaly from model consensus and current synoptic conditions. No frontal system or significant cold air mass is anticipated to depress temperatures to that level. Expecting above-average isotherms. 95% NO — invalid if a sudden polar vortex shift occurs.
