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Post-tropical storm Laura, at roughly 52°N/45°W, now encounters sub-11°C SSTs, while moving to the north, just S of Greenland. 06Z surface analysis (OPC) already has a complete transition into a frontal low pressure system and latest WV image hints on the inclusion of drier high tropospheric/low stratospheric air. Last QuikSCAT scan had uncontaminated 35-40kt along its SE quadrant, which is in line with the last advisory of the NHC, keeping it a 40kt system (discussion number 10). Ex-Laura should reach the extreme southern tip of Greenland during the morning hours of Friday, before turning to the east while increasing its forward speed.Further track of this system will be hard to follow as highly diffluent pattern overspreads the region south of Greenland, resulting in a broad area of pressure fall with numerous new low pressure developments. Latest indications are that not Laura itself but a new developing low will reach Ireland during SAT morning while the circulation of Laura decays somewhere SE of Greenland but a modified but still high energetic pool of tropical airmass will be available for further cyclogenesis over NW Europe.
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