Invest 91S

Updated December 08, 2025 at 18:00 UTC

Located at 5.4°S, 93.6°E

Minimum Pressure: 1008 mb

Maximum Winds: 20 kt

Satellite Loop Latest GFS Forecast Latest ECMWF Forecast

Current Conditions

Latest Satellite Image

Sea Temperatures CRW - MeanCRW - AnomalyOISST - MeanOISST - AnomalyTCHP - MeanTCHP - Anomaly

NRL 34/37 GHz Microwave Imagery 2025-12-08 20:53:00 UTC2025-12-08 18:29:46 UTC2025-12-08 15:28:36 UTC2025-12-08 12:15:00 UTC2025-12-08 09:47:00 UTC2025-12-07 21:06:00 UTC

NRL 89 GHz Microwave Imagery 2025-12-08 18:29:46 UTC2025-12-08 15:28:36 UTC2025-12-08 14:54:21 UTC

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Storm History

Storm Track Raw Data

Pressure and Wind History

This page uses data from the National Hurricane Center (NHC) and Joint Typhoon Warning Center (JTWC), with best track files through the Automated Tropical Cyclone Forecast (ATCF) system. Microwave imagery courtesy of the U.S. Naval Research Laboratory.