This one is really shaping up nice, should be interesting. What is really neat, is the Quad Cities NWS office was going with a chance of a blizzard 5 days out. Depending on the wind speeds that might just verify...
FORECAST FOR DEKALB AND VICINITY, 12/6/09, 11:00 AM
Today...mostly cloudy. High of 34 degrees. South winds at 5-10 MPH.
Tonight...chance of light snow. Low of 26 degrees. South winds around 5 MPH.
Tomorrow...chance of snow. High of 33 degrees. North winds at 5-10 MPH.
Extended outlook...Tuesday through Saturday...
Tuesday...chance of snow showers, with chance increasing Tuesday night. Low in the middle 20s. High in the lower 30s.
Wednesday...snow likely, with increased wind. Low in the middle to upper 20s. High in the upper 20s.
Thursday...partly cloudy. Low in the lower teens. High around 20.
Friday...partly cloudy. Low in the middle teens. High in the middle 20s.
Saturday...chance of snow showers. Low in the middle to upper teens. High in the middle 20s.
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CLIMATE DATA: Yesterday's high, 33 degrees; last night's low, 20 degrees. The average high/low temperature is 37/22. We had no precipitation at the DeKalb campus over the last 24 hours as of 7 AM this morning.
We have had 0.01" inches of liquid equivalent this month, and .5" of snow. On average, we should see 2.18" of liquid equivalent, and 9.5" of snow by December 31. We have had 43.11" of liquid equivalent as of this point this year, and .5" of snow. On average we should have seen 37.40" of annual liquid precipitation by December 31.
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SEVERE/HAZARDOUS WEATHER OUTLOOK: Everything is beginning to indicate a winter storm Tuesday into Wednesday. Forecast models track the storm over our area, and they are also showing increased wind speed.
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PRECIPITATION: Tonight into Monday: chance of light snow showers. With this, about .01-.1" liquid equivalent and snow up to 1", with 40% coverage.
Tuesday into Wednesday: .5"-1" of liquid equivalent, snow between 4"-8" with 80% coverage.
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FORECAST DISCUSSION: Everything is starting to point towards trouble come midweek. Forecast models continue to track a strengthening low over our area Tuesday through Wednesday, bringing with it some heavy snow. On top of this problem, winds speeds are forecasted to increase, to at least 20 MPH on Wednesday, causing blowing snow.
This morning's surface map has a low in Wisconsin, with a cold front tracking back across Iowa, Missouri, and Kansas. There is also a low in the panhandle of Oklahoma, with a cold front across Texas and New Mexico. Then there is our concern later this week, a low in central Colorado.
The cold front in Iowa, should pass through our area later today, and with it, we may see some light snow showers. The chance of snow comes mostly tonight and tomorrow before noon. Total accumulation with this system could be around 1".
After the snow stops tomorrow, we have a small break before we see snow again. The Colorado low should be entering our region Tuesday afternoon, with a chance of snow. Tuesday night, the chance of snow increases as the system will be much closer, and that chance stays high throughout Wednesday. We'll be looking at heavy snowfall, with possible amounts around 4"-8". We also will be having increased wind speeds, causing drifting snow. If the low tracks closer to us, we may see some mixed precipitation, including sleet and freezing rain. This is going to be a nasty system.
After the system moves out, the temperatures will drop again. Thursday and Friday should have partly cloudy skies, but highs only in the lower to middle 20s and lows in the lower to middle teens. Since the big system will have just passed, it should still be windy, so the wind chills will be even colder.
Saturday and Sunday are about the same as Thursday and Friday. There is a small chance of seeing a snow shower on Saturday, but it would not be a big one if it does snow. Sunday we actually begin to warm up again, with highs in the upper 20s.
At this point in time, the best thing to do would be stay posted to the weather. As that storm approaches, there may be changes in snowfall totals and in wind speeds. The system midweek is looking really nasty, so definitely keep an eye on it. Other than that system, prepare for a few light snow showers and cold temperatures and wind chills. After these systems, the roads may get a little nasty, so drive safely, and keep warm.
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Chuck Richie II
Northern Illinois University undergraduate meteorology student
e-mail: crichie2@gmail.com
FORECAST FOR DEKALB AND VICINITY, 12/6/09, 11:00 AM
Today...mostly cloudy. High of 34 degrees. South winds at 5-10 MPH.
Tonight...chance of light snow. Low of 26 degrees. South winds around 5 MPH.
Tomorrow...chance of snow. High of 33 degrees. North winds at 5-10 MPH.
Extended outlook...Tuesday through Saturday...
Tuesday...chance of snow showers, with chance increasing Tuesday night. Low in the middle 20s. High in the lower 30s.
Wednesday...snow likely, with increased wind. Low in the middle to upper 20s. High in the upper 20s.
Thursday...partly cloudy. Low in the lower teens. High around 20.
Friday...partly cloudy. Low in the middle teens. High in the middle 20s.
Saturday...chance of snow showers. Low in the middle to upper teens. High in the middle 20s.
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CLIMATE DATA: Yesterday's high, 33 degrees; last night's low, 20 degrees. The average high/low temperature is 37/22. We had no precipitation at the DeKalb campus over the last 24 hours as of 7 AM this morning.
We have had 0.01" inches of liquid equivalent this month, and .5" of snow. On average, we should see 2.18" of liquid equivalent, and 9.5" of snow by December 31. We have had 43.11" of liquid equivalent as of this point this year, and .5" of snow. On average we should have seen 37.40" of annual liquid precipitation by December 31.
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SEVERE/HAZARDOUS WEATHER OUTLOOK: Everything is beginning to indicate a winter storm Tuesday into Wednesday. Forecast models track the storm over our area, and they are also showing increased wind speed.
*********************************************
PRECIPITATION: Tonight into Monday: chance of light snow showers. With this, about .01-.1" liquid equivalent and snow up to 1", with 40% coverage.
Tuesday into Wednesday: .5"-1" of liquid equivalent, snow between 4"-8" with 80% coverage.
*********************************************
FORECAST DISCUSSION: Everything is starting to point towards trouble come midweek. Forecast models continue to track a strengthening low over our area Tuesday through Wednesday, bringing with it some heavy snow. On top of this problem, winds speeds are forecasted to increase, to at least 20 MPH on Wednesday, causing blowing snow.
This morning's surface map has a low in Wisconsin, with a cold front tracking back across Iowa, Missouri, and Kansas. There is also a low in the panhandle of Oklahoma, with a cold front across Texas and New Mexico. Then there is our concern later this week, a low in central Colorado.
The cold front in Iowa, should pass through our area later today, and with it, we may see some light snow showers. The chance of snow comes mostly tonight and tomorrow before noon. Total accumulation with this system could be around 1".
After the snow stops tomorrow, we have a small break before we see snow again. The Colorado low should be entering our region Tuesday afternoon, with a chance of snow. Tuesday night, the chance of snow increases as the system will be much closer, and that chance stays high throughout Wednesday. We'll be looking at heavy snowfall, with possible amounts around 4"-8". We also will be having increased wind speeds, causing drifting snow. If the low tracks closer to us, we may see some mixed precipitation, including sleet and freezing rain. This is going to be a nasty system.
After the system moves out, the temperatures will drop again. Thursday and Friday should have partly cloudy skies, but highs only in the lower to middle 20s and lows in the lower to middle teens. Since the big system will have just passed, it should still be windy, so the wind chills will be even colder.
Saturday and Sunday are about the same as Thursday and Friday. There is a small chance of seeing a snow shower on Saturday, but it would not be a big one if it does snow. Sunday we actually begin to warm up again, with highs in the upper 20s.
At this point in time, the best thing to do would be stay posted to the weather. As that storm approaches, there may be changes in snowfall totals and in wind speeds. The system midweek is looking really nasty, so definitely keep an eye on it. Other than that system, prepare for a few light snow showers and cold temperatures and wind chills. After these systems, the roads may get a little nasty, so drive safely, and keep warm.
********************************************
Chuck Richie II
Northern Illinois University undergraduate meteorology student
e-mail: crichie2@gmail.com
It should be interesting to see how this one pans out. Looks like a winter storm for sure, but will it hit blizzard criteria? (35 MPH winds or greater, storm sustained for 3 hours, and less than a 1/4 mile visibility) Time will tell, so keep an eye on this one.
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