Greenwich Park was the scene of an unexpected weather spectacle over the weekend when a compact tornado of dust and debris ripped across a sunbaked stretch of grass, scattering picnickers and startling visitors. The short-lived vortex, captured on video and shared widely online, formed as the capital faces one of its hottest spells of the year.
What happened
Clips circulating on social media show a column of dust and dried leaves spinning along the park’s dry plains and moving into areas where people had been sitting on blankets. Several people are seen fleeing the path of the funnel as it picked up speed and threw up a cloud of grit.
“Toto, we’re not in Greenwich anymore.”
The remark, posted among other comments under the footage, compared the scene to the famous line from The Wizard of Oz. Other social media users jostled between alarm and humour, posting remarks about parks turning into “a desert” and jokes about “tumbleweeds next.”
Not a tornado — a dust devil
Weather experts describe the phenomenon as a dust devil — locally sometimes called a “willy willy” — rather than a full-scale tornado. Dust devils are small, short-lived vortices that lift loose material from hot, dry ground when a column of rising warm air begins to rotate. They commonly appear on clear, sunny days when the surface heats rapidly.
The sighting comes as the Met Office has issued a rare extreme heat warning with temperatures forecast to climb to 36C. The capital is also experiencing prolonged dry conditions: the last recorded rain in London was more than a month ago, on 29 June, leaving grass and surface debris unusually susceptible to being picked up by gusts.
Other parks have seen similar events
Similar small vortices have been reported elsewhere in the capital this summer, with sightings in Hyde Park and Tooting Bec during the run of dry, hot weather. While not a safety incident on the scale of severe storm events, these dust devils can surprise park users and briefly reduce air quality locally by lifting fine particles into the air.
- Location: Greenwich Park, London
- Phenomenon: Dust devil / willy willy
- Conditions: Hot, clear weather and dried ground
- Context: Met Office extreme heat warning; temperatures up to 36C
Local reaction and practical considerations
On the ground, the reaction was a mixture of surprise and relief that no one was injured. Video shows people quickly moving away from the vortex rather than seeking shelter beneath trees — a sensible instinct given the brief, localised nature of dust devils. Park users should nevertheless be aware that sudden gusts can loft grit and small debris, posing a nuisance and, in some cases, a minor hazard to eyes and respiratory systems.
Public authorities have not reported any damage or injuries linked to the Greenwich incident. However, with several days of high temperatures and dry surfaces, the conditions for further dust devils — and other heat-related issues — remain in place.
| Item | Detail |
|---|---|
| Maximum forecast temperature | 36C |
| Last recorded rainfall in London | 29 June |
| Other reported locations | Hyde Park, Tooting Bec |
What to do if you encounter a dust devil
Basic precautions can reduce discomfort and risk:
- Move sideways out of the vortex’s path rather than running through it.
- Protect your eyes and mouth if thrown dust or debris reduces visibility.
- Avoid standing under trees during sudden gusts where branches could break.
The Greenwich episode is a vivid reminder of how familiar urban green spaces can produce unexpected phenomena when hot, dry conditions prevail. For now, the event remains an unusual but non-destructive footnote in a spell of extreme heat affecting the capital.
Around Greenwich, visitors said they were relieved the event passed quickly. The footage will add to growing local conversations about how the city adapts to intense summer weather.
