Started: 10/05/2013 4:42 AM by Goosen
10 May 2013
High amplitude upper ridge axis over BC will gradually shift eastward Saturday allowing Pacific moisture to move onto the coast. The RDPS model is a few hours slower bringing the rain to the Lower Mainland than the foreign models and is also slower than the ensemble average. A few members has rain for YVR by 00Z Sunday. Thus, introduced a POP for late afternoon instead of beginning late evening. Dayshift will have to pin point the rain start time better. Models are similar at bringing rain to southern Yukon late Saturday. Models are close enough in the longer term.
Posted: 10/05/2013 4:53 AM by Goosen
Interior..Another day with some record setting temperatures for the Southern Interior. A very weak short wave will round the ridge late today and may triggle a high based thunderstorm over the ridges. Models are showing isolated cells developing but not sure if anything will occur as 700 mb temps are increasing and most soundings show a LID or skinny CAPEs. With the exception of the NAM the foreign models show basically no CAPE.
Posted: 10/05/2013 4:55 AM by Goosen
Coast and Yukon..Timing of the rain on Saturday is a bit uncertain. Stratus is not quite to BLI at 12Z so stratus unlikely to reach Lower Mainland today. Mentioned mainly sunny (instead of sunny) due to high cloud arriving this afternoon.