Right now
The most recent data we hold from NHC arrived 15 hours ago, and this point is in it.
Nothing else has been detected within 20 km in the last 24 hours.
Reported by NHC today.
It is the only one we have recorded within 20 km of this point since 21 September 2026.
What the source measured
NHC reported: Tropical Storm Polo. Max winds: 46 mph. Pressure: 1003 mb. Movement: 50.
How we know
2 recorded sources include NHC; independence is not established by this count.
Our own score for this event is 11 out of 100.
This is our versioned heuristic index, not source severity or a calibrated probability. Urban PEI does not count unique people.
Computed under scoring rules v5. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Cyclones |
| Severity | Medium |
| Calamity Score (ours) | 11 / 100 |
| Legacy data-support index | 0.67/1 |
| Coordinates | 15.5000, -103.8000 |
| Nearest City | Ciudad Lázaro Cárdenas (322 km) |
| Urban exposure index (PEI) | 0 within 100 km |
| Impact Tier | minor |
| Timestamp | 2026-09-21T09:00:00.000Z |
| Source | https://www.nhc.noaa.gov/ |
Physical priority index · v5. Heuristic priority, not calibrated probability, predictive accuracy or damage. The legacy data-support index combines assigned source support and field availability. Urban PEI is distance-weighted and does not count unique people; zero does not establish that nobody is present. Model cards.
Source and revision timeline
Source: nhc. Occurrence: 2026-09-21T09:00:00.000Z.
First archived: 2026-09-20T21:05:08.928Z. Material modification: 2026-09-21T08:50:57.606Z.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
2026-09-21T11:43:57.163Z · data_change
Index 11 → 11; severity medium → medium; version 5 → 5.
2026-09-21T11:38:35.892Z · data_change
Index 11 → 11; severity medium → medium; version 5 → 5.
2026-09-21T11:27:52.760Z · data_change
Index 11 → 11; severity medium → medium; version 5 → 5.
2026-09-21T11:22:28.715Z · data_change
Index 11 → 11; severity medium → medium; version 5 → 5.
2026-09-21T11:11:38.361Z · data_change
Index 11 → 11; severity medium → medium; version 5 → 5.
2026-09-21T11:06:13.113Z · data_change
Index 11 → 11; severity medium → medium; version 5 → 5.
2026-09-21T09:12:25.899Z · data_change
Index 11 → 11; severity medium → medium; version 5 → 5.
2026-09-21T08:50:57.606Z · data_change
Index 11 → 11; severity medium → medium; version 5 → 5.
2026-09-21T08:07:47.244Z · data_change
Index 11 → 11; severity medium → medium; version 5 → 5.
2026-09-21T08:02:25.342Z · data_change
Index 11 → 11; severity medium → medium; version 5 → 5.
2026-09-21T06:41:23.730Z · data_change
Index 11 → 11; severity medium → medium; version 5 → 5.
2026-09-21T02:50:11.781Z · data_change
Index 11 → 11; severity low → medium; version 5 → 5.
Score Breakdown
Technical Details
| Name | Polo |
| StormId | ep172026 |
| MaxWindMph | 46 |
| Category | 0 |
| Pressure | 1003 |
| Movement | 50 |
| TypeLabel | Tropical Storm |
| Gdacs EventType | TC |
| Gdacs AlertLevel | Green |
| Gdacs AlertScore | 1 |
| Gdacs Country | Mexico |
| Gdacs IsCurrent | true |
| MergedSources | [{"id":"gdacs_TC_1001325","source":"gdacs","severity":"low","severityValue":20,"timestamp":1789959600000,"latitude":15.5,"longitude":-103.8}] |
Safety Information
During a tropical cyclone: shelter in a sturdy interior room away from windows. Stock emergency supplies including water, food, medications, and flashlights. Do not venture outdoors during the eye of the storm. After passage, beware of downed power lines, flooding, and structural damage. Follow official guidance for evacuation and shelter.
Series begins 8 March 2026. Comparisons refer to that period only. Collection gap: 14-26 August 2026.
This data is aggregated algorithmically from scientific sources. Not a replacement for official emergency warnings.
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