The weatherforecast for Netherlands coastal waters and adjacent lakes and estuaries issued at 15:55 UTC 300622. A warning to shipping: Rottum Delfzijl west 6 other districts: no warning Synopsis: trough over the Netherlands moving slowly northeast. weak ridge builds Friday at over Germany. Forecast valid from 18:00 to 06:00 UTC: Flushing southwest 3-4, increasing 4-5. good. Zierikzee southwest 3-4. good. Hook of Holland IJmuiden west 3-4, increasing southwest 4-5. first periods of rain. good, in precipitation sometimes moderate. Texel Harlingen west to northwest 3-4, later increasing southwest 4-5. especially first periods of rain. good, in precipitation sometimes moderate. Rottum mainly northwest 4-5, in the evening for a time 6, later backing west. in showers possibly 30 knots. first risk an at thunderstorm, then occasional rain. good, moderate to poor in precipitation. Delfzijl mainly northwest 4-5, in the evening possibly for a time 6, later backing west. in showers possibly 30 knots. first risk an at thunderstorm, then occasional rain. good, moderate to poor in precipitation. IJsselmeer Marken mainly northwest 3-4, increasing southwest 4-5. first periods of rain. good, in precipitation sometimes moderate. Forecast valid from 06:00 to 18:00 UTC: Flushing Hook of Holland southwest 4-5, possibly 6. gradually risk shower. good, in precipitation possibly moderate. Zierikzee southwest 3-4, increasing 4-5. gradually risk shower. good, in precipitation possibly moderate. IJmuiden Texel southwest 4-5, later possibly 6. gradually risk shower. good, in precipitation possibly moderate. Harlingen IJsselmeer Marken southwest 4-5. gradually risk shower. good, in precipitation possibly moderate. Rottum Delfzijl west 4-5, backing southwest. gradually risk shower. good, in precipitation possibly moderate.