Sunday, July 12, 2009
July 12/2009 Forecast
Severe storms are possible today off the foothills in Alberta. Nice cape values in the order of 2500-3000j/kg, dews in the mid 60F range, southerly 850's, southerly surface winds and a lee side trough to get things going. A downfall is that H5 and H7 winds are not very great. Conditions may be conducive for HP development with the lack of good flow. Although dangerous, they can be quite photogenic! The best area seems to be near Drayton Valley north to the Yellowhead area where the best instability and moisture is forecast. The southerly 850's lie a bit further east, so hopefully if a storm does fire it can sustain itself to reach those winds. I may head to southeastern Alberta and maybe into southwestern Sask tomorrow as it looks like thunderstorm conditions will be there. Time will tell...
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Storms fired in the foothills today but struggled to get out into the plains. We had a look at a high based storm near Tay River early this afternoon. A cap? Lack of mid level flow? Both? Maybe some lighting photo ops tonight, or a drive to southeast Alberta tomorrow.
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