Bertha is back to Tropical Storm strength today. Well see gradual weakening & transition to Post Tropical as it moves Northward over the next 2 days. Overnight model runs + National Hurricane Center continue to track Bertha near Southeast of the Avalon on Thursday. It remains a tricky forecast, because just a slight shift in the eventual track of Bertha will mean a big difference in the rainfall forecast for the Avalon. As of now, it appears St. Johns Metro will miss out on the heaviest rainfall, with the bulls-eye currently looking set to fall just offshore, or perhaps clip the Southeast Avalon. Forecast models are flirting with 30-50+ mm for that heaviest swath, with amounts dropping off quickly to the Northwest. The strongest (60-90+ km/h) Tropical Storm force winds are look to remain offshore & over the Grand Banks. However if Bertha does get close enough, we could see some 40-60 km/h winds over the Southeast Avalon. Stay tuned for updates. #nlwx
Posted on: Tue, 05 Aug 2014 14:10:36 +0000