Tropical Storm Dolly 2026: Live Track, Path, Forecast & Will It Become a Hurricane?
- NHC does not forecast Dolly to become a hurricane. Its advisory 1 peak is 40 kt (45 mph), against a hurricane threshold of 64 kt (74 mph), and the forecast ends in dissipation on 31 August.
- The quantified answer is in NHC’s wind speed probability product: not one location in it carries a 64 kt row, and the product prints those rows whenever the five-day chance of hurricane-force wind reaches 1%. Everywhere is below one per cent.
- US territory is involved only lightly and only through rain. St Thomas, St John and St Croix sit at a 3–4% chance of tropical-storm-force wind; Puerto Rico is below the 3% threshold to be printed at all. NHC’s hazard is heavy rain and flash flooding on Sunday and Monday, especially in higher terrain.
- There are no coastal watches or warnings in effect anywhere, and the mainland United States does not appear in any part of this forecast.
Tropical Storm Dolly formed over the central tropical Atlantic on the morning of Thursday 27 August 2026. The National Hurricane Center began issuing advisories on it at 15:00 UTC, and the first one already contains the answer to the question most people are asking.
It is no.
Everything below is from that first advisory. NHC reissues every six hours, so treat this as a snapshot with a timestamp on it rather than a settled account — and go to the National Hurricane Center for the live version at any moment after this was written.
Will Tropical Storm Dolly become a hurricane?
Not according to the National Hurricane Center. Its advisory 1 forecast peaks at 40 kt — 45 mph — and a storm needs 64 kt, or 74 mph, to be a hurricane. From there the forecast has Dolly becoming post-tropical on Sunday and dissipating on Monday.
The shaded band is NHC’s own stated average intensity error — the advisory says those errors “have averaged near 15 kt each day”. Even adding a full average error to the forecast peak leaves Dolly at 55 kt, still short of a hurricane.
There is a harder number than that, and it comes from a product almost nobody reads. Alongside each advisory NHC issues wind speed probabilities for specific locations, giving the chance of sustained winds of at least 34, 50 and 64 kt. In this one, eleven locations are listed and every one of them has only a 34 kt row. The product states its own rule: the 50 and 64 kt rows are printed whenever the five-day cumulative chance of hurricane-force wind reaches 1 per cent.
Nothing was printed. At every location in the product, that chance is below one per cent.
Where is Dolly right now?
Near 13.6°N, 38.7°W, about 1,555 miles east of the Leeward Islands, as of 15:00 UTC on 27 August.
| Measure | Advisory 1, 15:00 UTC 27 Aug |
|---|---|
| Maximum sustained winds | 40 mph (65 km/h), 35 kt |
| Movement | West, 275°, at 24 mph (39 km/h) |
| Minimum central pressure | 1007 mb (29.74 in) |
| Tropical-storm-force wind extent | 60 miles (95 km) from the centre |
| Coastal watches and warnings | none in effect |
Two of those numbers matter more than they look. A central pressure of 1007 mb is barely below ordinary tropical sea-level pressure — this is a weak system. And 24 mph is a fast forward speed for a tropical cyclone, which is part of why NHC does not expect it to organise.
What is the forecast track?
Almost due west, quickly, and then apart before it gets anywhere. Dolly’s forecast latitude climbs only from 13.6°N to 17.7°N over three days while its longitude runs from 38.7°W to 63.2°W — a nearly straight line across open ocean towards the Lesser Antilles.
NHC forecast track for Dolly
Advisory 1, issued 27 August 2026, 15:00 UTC| Valid | Position | Wind | Stage |
|---|---|---|---|
| Thu 27 Aug, 15:00Z | 13.6°N 38.7°W | 35 kt / 40 mph | current |
| Fri 28 Aug, 00:00Z | 13.7°N 42.0°W | 40 kt / 45 mph | forecast |
| Fri 28 Aug, 12:00Z | 14.4°N 46.4°W | 40 kt / 45 mph | forecast |
| Sat 29 Aug, 00:00Z | 15.1°N 51.1°W | 40 kt / 45 mph | forecast |
| Sat 29 Aug, 12:00Z | 15.9°N 55.6°W | 40 kt / 45 mph | forecast |
| Sun 30 Aug, 00:00Z | 16.7°N 59.5°W | 35 kt / 40 mph | post-tropical |
| Sun 30 Aug, 12:00Z | 17.7°N 63.2°W | 35 kt / 40 mph | post-tropical |
| Mon 31 Aug, 12:00Z | NHC outlook: dissipated | ||
NHC official cone of uncertainty TVCN consensus GFS, UKMET, HWRF, HAFS past 144h: climatology only
The dotted tails are not a forecast. On this storm the dynamical models and the consensus run to 144 hours; the lines continue to 240 because two of the aids do, but those two are a climatology baseline and a straight extrapolation of the current motion. NHC uses that family to measure whether a forecast has any skill at all — it is the bar, not the forecast. The map opens fitted to the official track and the guidance inside the skill boundary; zoom out to follow the tails. Model cycle 2026082712, from NOAA's public archive.
The shaded cone is not where the storm will be felt. It is where its centre is likely to go, widening with time because the forecast does: each circle along it is sized so two-thirds of the last five years of official errors fall inside, and the whole track stays within the cone roughly 60–70% of the time. NHC is explicit that impacts regularly extend well beyond it — a storm's rain and wind are far wider than its centre.
Drawn here from NHC's published cone, simplified from 2147 points to 270 so it renders in a browser — this is our rendering of NOAA's public data, not NHC's own graphic. For the official image, go to the National Hurricane Center.
Drag to pan, use the +/− buttons to zoom, tap a point for its figures. This is one advisory, not a live feed — NHC reissues at 03, 09, 15 and 21 UTC, and this page refreshes when the site is rebuilt. The National Hurricane Center is the live source.
NHC notes that model guidance is “tightly packed” on a track towards the Leeward Islands, and that its own forecast sits on the faster and more southward side of that guidance — consistent, it says, with a well-known tendency for models to be too slow and too far poleward in the tropical Atlantic.
The forecast stops at dissipation on Monday, west of the Leeward Islands but still east of Puerto Rico. That is why there is no mainland United States in this story at all.
Who is actually at risk, and when?
The islands, and mostly from rain rather than wind. NHC’s hazard statement is specific about both the places and the days: heavy rain could begin to affect the Leeward Islands late Saturday into Sunday, and the Virgin Islands, Puerto Rico and Hispaniola Sunday and Monday. The risk it names is flash flooding, especially in areas of higher terrain.
On wind, the picture is thinner still.
For a US audience the two rows that matter are the US Virgin Islands and Puerto Rico:
- St Croix and St John: 4%. St Thomas: 3%. Those are five-day cumulative chances of sustained tropical-storm-force wind — 39 mph and above.
- Puerto Rico does not appear in the table at all, which places it under the 3% threshold NHC uses before printing a location.
Puerto Rico being absent from the wind table while named in the rain hazard is not a contradiction. It is the whole shape of this system: a disorganised bundle of moisture moving fast, with far more rain in it than wind.
Are there any watches or warnings?
None, anywhere. The advisory records no coastal watches or warnings in effect, and no storm surge watch or warning products have been issued.
What NHC says instead is that interests in the Leeward Islands should monitor Dolly’s progress. That is the weakest formal language in the set, and it is worth reading as what it is — a request to keep an eye on it, not an instruction to act.
Why is Dolly forecast to fall apart?
Three things at once, and NHC names all three: increasing southwesterly shear from an upper-level trough over the central Atlantic, the storm’s own fast forward motion, and dry air aloft.
Shear is already visible in what the satellite shows. NHC describes northwesterly shear pushing most of the thunderstorm activity onto the southern side of the circulation, away from the centre — a storm whose convection has been shoved off its own middle is not a storm that is deepening. The maximum winds of 35 kt were measured by scatterometer in the northeastern quadrant, with a Dvorak classification of T2.5/35 kt supporting it.
NHC’s expectation, in its own words, is that Dolly opens up into a strong tropical wave before it reaches the Leeward Islands. The post-tropical positions in the forecast are provided not because the system will still be dangerous as a cyclone, but because a decaying wave still carries gusty winds and heavy rain.
Where do I get the live update?
The National Hurricane Center, at nhc.noaa.gov. It is the only source that matters here, and every number on this page came from it.
Complete advisories come at 5:00 and 11:00, morning and evening, Atlantic Standard Time — the equivalent of 21:00, 03:00, 09:00 and 15:00 UTC. Advisory 1 was issued at 15:00 UTC on 27 August, so the first update to everything above was due at 21:00 UTC that same day. If watches or warnings are ever issued for a storm, intermediate advisories fill the gaps every three hours.
Four products are published each cycle and they answer different questions. The public advisory is the plain-language summary with the position and the hazards. The forecast/advisory carries the numerical forecast positions and intensities. The forecast discussion explains the reasoning, and is where the forecaster’s own doubts appear. The wind speed probabilities give the per-location numbers used above.
Why is it called Dolly?
It is the fourth name on the 2026 Atlantic list, and NHC went out of its way to say the timing is coincidental. The discussion attached to advisory 1 contains an unusual paragraph explaining that Atlantic storm names come from six pre-determined rotating lists maintained by the World Meteorological Organization’s Region IV Hurricane Committee, and that the name Dolly replaced Diana after the 1990 hurricane season, first being used in 1996.
Forecasters do not normally spend a paragraph of a technical discussion on nomenclature. That they did here is a small sign of how much confusion a name can generate — and it is the only part of advisory 1 that will still read the same way in a month.
How we verified this
🔴 The storm was confirmed to exist before anything else was written. NHC’s machine-readable current-storms feed returned Dolly as active storm al042026 at 35 kt, and an invented filename on the same host returned 404 — so the feed discriminates rather than answering everything the same way. Every figure below then came from the advisory text products, not from the feed alone.
🔴 This page is one advisory deep, and says so throughout. Everything is from advisory 1, issued 15:00 UTC on 27 August 2026, forecaster Blake. NHC reissues every six hours; the next complete advisory was due at 21:00 UTC the same day. A live storm article is a snapshot by construction, and the honest thing is to timestamp it rather than write as though it were settled.
✅ “Will it become a hurricane” is answered from NHC’s probability product, not from the narrative. The wind speed probabilities product lists eleven locations and gives each only a 34 kt row. Its own printing rule states that 50 kt and 64 kt rows appear “when the 5-day 64-kt cumulative probability is at least 1 percent”. No row appears anywhere, so the chance is below 1% at every location in the product.
⚠️ Puerto Rico’s absence from that table is informative, not an omission. The same product prints a location once its five-day cumulative 34 kt probability reaches 3%. Puerto Rico is not printed, which places it below that figure — while NHC separately names Puerto Rico in its rainfall hazard. Low wind risk and real rain risk are not in conflict.
✅ The Leeward Islands longitude on the track chart is derived, not recalled. NHC’s public advisory places the centre “about 1555 mi…2505 km E of the Leeward Islands” while at 13.6N 38.7W, which puts the islands near 61.9°W. NHC’s two distance figures were checked against each other first: 1,555 miles converts to 2,502.5 km against the stated 2,505 km.
⚠️ The ±15 kt band on the intensity chart is NHC’s own stated error, used flat. The advisory says intensity errors “have averaged near 15 kt each day”. It is drawn as a constant band because that is how the sentence reads; it is not a probability distribution, and NHC’s probability product is the better guide to outcomes.
🔴 No forecast on this page is ours. Track positions, intensities, timing, hazards and error figures are all NHC’s. Where this page does arithmetic — the longitude derivation, the gap between 40 kt and 64 kt — it says so.