**********8:00PM UPDATE SUNDAY************

Guys, this is an extremely tricky storm to forecast - so bear with us. We are sorry for the lack of updates this weekend, we were both out of town and without computers - hard to do updates without them! ANYWAY, we are back so lets get to the weather!

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This storm is NOT a big snowmaker for us, rather a much BIGGER Icemaker...We are ON that line as usual though, of the cold and more snow...So, 20-30 mile changes - EVEN LESS then that, COULD MEAN BIG changes for us.

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TIMING - Freezing rain/sleet will break out tonight if not before midnight by midnight, continue through the morning and change over to snow late morning/midday. Light Snow will continue through the afternoon, probably not too heavy. Icing will continue as well mixing a bit with snow through the evening. It will change back to all snow and continue through Monday night ending between 1-4am or a bit before...generally very very early hours of Tuesday.

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ACCUMULATIONS 

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BIGGEST HAZARD - ICE ICE ICE....THERE IS A MUCH MUCH GREATER CHANCE OF ICE WITH THIS SYSTEM THEN LAST, BECAUSE TEMPERATURES WILL NOT BE QUITE AS COLD. GROUND TEMPS HOWEVER WILL BE WELL BELOW FREEZING - WE ALL KNOW WHAT HAPPENS THEN - IT FREEZES ON CONTACT.

With Snow NOT changing over until LATER in the DAY MONDAY, and temperatures not going BELOW freezing until AFTER MIDDAY, ICING WILL BE A VERY BAD PROBLEM for the Morning commute, and EVEN the Afternoon/EVENING commute which will be EVEN MORE dangerous as it changes back to a wet, sleety, icy snow.

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Temperatures tomorrow will be JUST around or UNDER 32°, even into Upper 20's if we are lucky. North of I84, you will be mostly snow, even north of I287. Temperatures will begin to drop after lunchtime and continue dropping to low to mid 20's by nightfall - ANY Wet/melted ground will freeze up..on top of any ice that formed.

AGAIN, THIS IS NOT A BIG SNOWMAKER FOR US...MUCH MORE OF AN ICE MAKER - WHICH IS MUCH WORSE.

*******MONDAY NIGHT FORECAST DISCUSSION*************

***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, 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!

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.

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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

High Temperatures Tomorrow!!! COLLDDD