Tropical Storm Polo watch issued for southwestern Mexico
TROPICAL STORM / FLOOD AND MUDSLIDE WARNING
In brief
- What happenedThe National Hurricane Center said Tropical Storm Polo was strengthening off southwestern Mexico on 21 September 2026.
- Reported impactMaximum sustained winds: 75 km/h (45 mph) · 0900 UTC, 21 September · Position: 395 km south of Manzanillo; 340 km southwest of Zihuatanejo · Tropical-storm watch: Tecpan de Galeana to Punta San Telmo
- What help is neededResponse priorities should be confirmed in the linked source reports as needs change.
WorldsAid verification
A WorldsAid editor reviewed this record against 2 attributed sources, cleaned feed formatting and checked the event, place and reporting date. 5 human-impact figures were separated from the narrative and dated where the source allowed. Earlier observations remain in the evidence history instead of being silently overwritten.
What changed
Updated verified snapshot
This record was first dated 2026-09-21 and last verified 2026-09-21T09:00:00Z.
Situation
The National Hurricane Center said Tropical Storm Polo was strengthening off southwestern Mexico on 21 September 2026. At 0900 UTC, Polo was about 395 km south of Manzanillo and 340 km southwest of Zihuatanejo, with maximum sustained winds of 75 km/h. Mexico issued a tropical-storm watch from Tecpan de Galeana to Punta San Telmo. Rapid intensification was forecast, while rainfall of 100–200 mm, with isolated totals near 300 mm, could produce life-threatening flash flooding and mudslides in Guerrero, Michoacan, Colima and Jalisco through 24 September. Forecast intensity and track remain projections, not observed impact totals.
Verified figures
- Maximum sustained winds
- 75 km/h (45 mph) · 0900 UTC, 21 September retained at 2026-09-21T09:00:00Z
- Position
- 395 km south of Manzanillo; 340 km southwest of Zihuatanejo retained at 2026-09-21T09:00:00Z
- Tropical-storm watch
- Tecpan de Galeana to Punta San Telmo retained at 2026-09-21T09:00:00Z
- Forecast rainfall
- 100–200 mm; isolated totals near 300 mm through 24 September retained at 2026-09-21T09:00:00Z
- Primary hazards
- Life-threatening flash flooding and mudslides retained at 2026-09-21T09:00:00Z
What we knew when
- WorldsAid record entered the retained historical dataset.
- NHC advisory 3: 75 km/h winds; tropical-storm watch issued; rapid intensification forecast preserved as a dated, source-linked observation. Source
Earlier figures are never replaced by later values; additional observations are retained as new ledger entries.
Provenance
This page renders the last verified WorldsAid cache directly in HTML. It does not treat generated summaries as primary evidence.
Cached dataset: worldsai_drup771.sql.gz
Verified
SHA-256 a75efeef85638affaa6fadc2579fd201eed510c48fef0c6282c8cc349d09ea6f