A stationary front is currently spread over much of central Europe, extending from a surface low pressure system located over the North Sea. This front will gradually progress to the southeast through Thursday. With the front located to the south of Rhineland-Palatinate region, winds are expected from the north, bringing cool, moist air in from the coastal areas. There is a likely chance for widespread showers throughout the day, with an isolated chance for thunderstorms further into the afternoon; this is primarily due to opposing winds from the north and south creating convective potential as they meet along the front.
A secondary low is projected to form along the aforementioned front Thursday into Friday as it interacts with the warmer waters of the Ligurian Sea. Upper level steering flow will send this surface system to the northeast, allowing winds over Nurburg to continue from the north as they move cyclonically around the center of this low. This will maintain similar conditions to Thursday, though with a lower chance for precipitation. Some amounts of afternoon heating may cause a few isolated showers across the region.
This second low pressure system is expected to remain relatively stationary over the borders of Germany, Czechia, and Poland through the remainder of the weekend. As such, there will be a continuation of conditions observed Thursday and Friday, though with another elevated probability for rainfall Saturday as increased moisture once again moves in from the North Sea. Lingering showers may extend through Sunday morning.