***ISSUING an Alert of Light to moderate snowfall Tomorrow Tuesday the 6th from mid morning until afternoon and possibly evening***
YESSS Folks first Alberta Clipper will be affecting us tomorrow from mid morning until the Afternoon and possibly evening hours. THE characteristics of Alberta Clippers, which are usually fast, and do not have THAT much moisture to deal with also make it quite difficult to forecast...SO, I have a feeling, based off of the latest data from the models, and looking at other maps, that we might be getting a bit more then the major sites are forecasting, and it might be a BIT MORE heavy than you think, as was the Snow on Saturday (Short lived, but it came down!).
SO! Here is my forecast, and a snow totals map will be posted. ANOTHER thing to keep in mind - The TEMPERATURES aloft in the Atmosphere are SO COLD (Below 0*C) that something to watch with this clipper will be "Fluff" Factor - USUALLY we go by a standard ratio of 10:1 when forecasting snow amounts (10" snow = 1" rain)...SO, on a map, .5" of QPF (Liquid) would be 5" of snow. 1" QPF would be 10" snow. NOW, because these temperatures are so cold, we could be looking at a 15 or 20:1 ratio...so, .3" QPF would yield 4.5-6" of snow with a 15-20:1 ratio!
SO! Here is my forecast, and a snow totals map will be posted. ANOTHER thing to keep in mind - The TEMPERATURES aloft in the Atmosphere are SO COLD (Below 0*C) that something to watch with this clipper will be "Fluff" Factor - USUALLY we go by a standard ratio of 10:1 when forecasting snow amounts (10" snow = 1" rain)...SO, on a map, .5" of QPF (Liquid) would be 5" of snow. 1" QPF would be 10" snow. NOW, because these temperatures are so cold, we could be looking at a 15 or 20:1 ratio...so, .3" QPF would yield 4.5-6" of snow with a 15-20:1 ratio!
So, the models right now are forecasting 1-2" of snow for us based off of a 10:1 ratio...assuming that we actually get a 15-20:1 ratio, that 1-2" (0.1-0.2" QPF) suddenly becomes 1.5-3" or 2-4" of snow.
In this forecast, I have used a 18:1 ratio, and have combined all of the major models to get an average amount of QPF for our area. This is reflected on the map!.
ANOTHER thing with this clipper, it will be Riding the Jetstream the whole way...so, what is usually a fast storm suddenly became faster. I think that once it hits the warm water it will rapidly intensify, and slow down and give us more snow - which may happen depending on the winds in the Jet, or may not happen. ALOTTA tiny details for even a small storm!
ANOTHER thing with this clipper, it will be Riding the Jetstream the whole way...so, what is usually a fast storm suddenly became faster. I think that once it hits the warm water it will rapidly intensify, and slow down and give us more snow - which may happen depending on the winds in the Jet, or may not happen. ALOTTA tiny details for even a small storm!
OTHER THEN THE CLIPPER, COLLLLDDDDEST TEMPS OF THE SEASON COMING THIS WEEK, THURSDAY WILL BE THE COLDEST. A MINOR PULLBACK THIS WEEKEND, THEN ANOTHER COLD SHOT.
************************FORECAST**************************
TONIGHT - COLLDDDD and Clear skies will make it EVEN COLDER! Those winds today was the first of several cold fronts to come through, and tonight temps will drop to the low to mid teens. Much colder as you make your way to the North and into the Mountains and NW towards the Canadian Border. Coastal areas a few degrees warmer then inland.
TOMORROW - Snow will begin early to mid morning and continue lightly, maybe some stronger bands but I don't think it will get too bad. Total accumulations 1-3" for now, this COULD change tomorrow keep an eye out! Snow will stick around until mid afternoon, maybe evening. TEMPS BARELY MAKING IT TO MID 20'S, COLDER INLAND.
WEDNESDAY - Highs in the mid to HIGH teens...Morning WINDCHILLS COULD GO AND STAY IN THE NEGATIVES!
THURSDAY - Highs in the LOW Teens, maybe even below 10*, windchills possibly -20* or less.
Friday we have another chance at a clipper, and Monday-Tuesday chance of a coastal storm developing which would bring snow.
SNOWFALL MAP BELOW, EXPECT UPDATES LATER!
WILL BE POSTING TEMP MAPS FOR THE NEXT WEEK, AND WINDCHILL TEMPS
WINDCHILL Temperatures for Tomorrow |
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