Rapidly Developing Low-Pressure System Sweeps Across Southern England Wednesday Night
A rapidly developing low-pressure system is set to affect southern England on Wednesday night into Thursday. This system poses significant wind and rain hazards, leading to possible travel disruptions and property damage.
Details of the Low-Pressure System
On Wednesday, a deep wave will move into western Europe. By midday, a surface low is expected to form over the Bay of Biscay, characterized by rapid intensification. The central pressure is anticipated to drop from 988 millibars (mbar) to approximately 961 mbar by Thursday at noon.
Rapid Intensification Explained
Rapid intensification refers to a significant decrease in central pressure—more than 24 mbar within 24 hours. This specific system is predicted to experience a pressure drop of 27 mbar, indicating a process known as bombogenesis.
Wind and Rain Forecast
Forecast models suggest wind gusts could reach up to 120 kilometers per hour (km/h) across southern England, extending towards northern France and the Benelux countries. The Met Office has highlighted potential scenarios depicting the system’s track and impact.
Expected Conditions
- Peak Central Pressure: 961 mbar by Thursday 12 UTC.
- Wind Gusts: Possible 100-130 km/h across southern England and surrounding waters.
- Rainfall: Anticipated 60-80 mm within 12-24 hours, posing flooding risks.
Impact Timeline
The low-pressure system will track northeast through the English Channel. By midnight on Thursday, the low is projected to deepen to around 975 mbar. The following morning, further pressure drops will occur as the system moves over the southeastern coast of England.
Weather Implications
As a result of the low’s intensification, the wind field will expand significantly. Winds near the surface are expected to translate into strong gusts, leading to travel disruptions, particularly in air traffic.
Rainfall along the system’s path may cause localized flooding, especially where thunderstorms coincide with the advancing front over the English Channel.
Conclusion
It is essential for residents and travelers in southern England and nearby regions to stay informed about this rapidly developing low-pressure system. Anticipate severe weather conditions into Thursday, with potential for strong winds, heavy rain, and associated hazards.
