Major Cold Front Approaches With Snow Chances
Tuesday, October 2nd, 2012
Thanks to Diane Baum from Inver Grove Heights in MN.
“I thought this was so unusual; a tree that was half green and half yellow! Taken in Inver Grove Heights, MN — in Inver Grove Heights.”
More Northern Lights
Thanks to @pixelsbyjim for the picture below out of Green Bay, WI.
The northern lights forecast doesn’t look as promising as it did over the weekend, but if you’re taking a trip up to Canad, keep an eye to the sky!
“Forecast: Auroral activity will be low. Weather permitting, low-level displays will be visible overhead from Inuvik, Yellowknife, Gillam, James Bay and Nain and visible low on the northern horizon from as far south as Juneau, Edmonton Winnipeg and Sept-Iles, Canada.”
Soggy Bottom Boys
Every time I think of a soggy day, I think of the “Soggy Bottom Boys” from the movie “O Brother, Where Art Though?” I guess it would be good music for a gray, rainy day! The image below is from @Luke_Frasier who snapped this picture out of Bowling Green, KY, which picked up 1.27″ of rain so far from the storm system.
According to radar estimates of rainfall, 2″ to 4″ of rain fell across parts of the Lower Mississippi Valley and the Gulf Coast States.
Slow Moving Low
Thanks to a slow moving low pressure system moving up from the Lower Mississippi Valley, waterlogged weather conditions will continue for the eastern 1/3 of the country. The other storm of note is that in Canada! That’s the one that will drop temperatures significantly into the weekend.
The same slow moving low pressure system across the Ohio Valley will slowly slide northeast with additional rain/thunder chances today. NOAA’s HPC rainfall forecast today suggests the potential of up to an additional 1″, but being away from the main source of moisture (Gulf of Mexico), rainfall amounts will be lighter.
Meanwhile In Montana…
Take a look at the 36 hour precipitation forecast for the Northern Rockies! Yes, that’s snow!! Thanks to a significant cold front, temperatures will be cold enough for some accumulating snow across parts of Montana!
Winter Weather Advisory
The National Weather Service has issued a WINTER WEATHER ADVISORY for parts of western Montana for accumulating snow potential through PM Wednesday.
WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 2 PM THIS AFTERNOON TO 6 PM MDT WEDNESDAY ABOVE 4500 FEET FOR…MARIAS PASS… A WINTER WEATHER ADVISORY ABOVE 4500 FEET REMAINS IN EFFECT FROM 2 PM THIS AFTERNOON TO 6 PM MDT WEDNESDAY.
* IMPACTS/TIMING: A COLD FRONTAL SYSTEM WILL USHER COOLER TEMPERATURES AND PRECIPITATION INTO THE AREA LATE TUESDAY AND THROUGH WEDNESDAY. SNOW LEVELS WILL BE LOWERING WHILE SNOW DEVELOPS IN THE MOUNTAINS BY LATE TUESDAY AFTERNOON. SNOW LEVELS WILL CONTINUE TO LOWER TO ABOUT 4000 FEET WEDNESDAY MORNING WITH ACCUMULATING SNOW OVER THE HIGHER TERRAIN.
* SNOW ACCUMULATIONS: 5 TO 10 INCHES OF NEW SNOW ABOVE 6000 FEET…WITH 2 TO 4 INCHES AT THE LOWER ELEVATIONS DOWN TO 4500 FEET.
It’s interesting to look at the snowfall forecast as the system drops south into the Lower 48. Snow accumulations will be at their highest in the highest elevations, but temperatures will be cold enough for some light snow potential in the lower elevations as well!
Missed by Shovelable Snow?
Interestingly, the day 3 snowfall forecast from NOAA’s HPC suggests a good potential of at least 4″ snowfall (mainly across Ontario Canada). In fact, the forecast calls for a 70% chance of at least 4″ in the red outlined areas.
November-like Air Mass
This will be the first big cold front of October 2012! Temperatures will drop nearly 30° from where they were last weekend. We are also likely to see widespread frost/freeze conditions across a large chunk of the Great Lakes Region through the weekend. The image below suggest the 850mb temperatures early Saturday. These are temperatures a few thousand feet off the ground and to be honest, I’m not sure I’ve seen readings as cold as this so far this season!
Progression of a Cold Front
Take a look at the high temperature forecasts through the rest of the week/weekend… This may help show how potent this cold front will be!
Thanks for checking in on this Tuesday, have a great rest of your week!
Don’t forget to follow me on Twitter @TNelsonWNTV