This is a very Busy and Unsettled Week to start off Late February and into March. Many have heard the saying "March can either come in like a Lamb/Lion and leave out as a Lamb/Lion" Well IF it comes in like a Lion (unpleasant, stormy, unsettled) it may leave out like a Lamb (tranquil/quiet/pleasant)
As I look Long-Range and into March, I choose the LION to start out a Month... Its looking very Unsettled and Stormy with Snow Chances all this Week and into the Weekend. I'll be breaking down each one this Evening as I mentioned tonight during our 5 & 6 Shows. HERE is the 7-Day Forecast for Casper this Week. Though I didn't post Riverton or Cheyenne, I do think Temperatures will stay Cool on Tuesday, Seasonal Wednesday/Thursday and then COLD again late Week and Weekend. ~ Those are just Temperatures. SNOW is something different as we have 3 Systems that will affect our State.
SYSTEM #1) Along our Stalled Frontal Boundary over I-25 and Central WY, a piece of energy will carve out of the Bitteroots of MT/ID and drop Southeast into WY as by Tuesday Morning and lasting through Early Evening in the Laramies. LATEST Data shows a swath of Light Snow Amounts all across Central WY in the Lower Elevations & about 3-6" in Laramies or so.
SYSTEM #2) Now all of WY will catch a break on Wednesday as we'll be between a Western Ridge & an Eastern Trough. This means, dry and breezy weather increases and lasting through Thursday Afternoon. Now much of WY stays dry on Thursday but our Next piece of Energy will move in after Moisture from CA/NV drifts East in the Western Basins. As a Surface High builds back into the Dakota's, the Boundary will shift West into WY. The Moisture moving in from the West to the East will interact with the High. Dynamics and Upper Level Forcing will create more SNOW for much of WY late Thursday and into Friday
<< ALL Long-Range Weather Models show this from this Mornings Run and will be closely watching the very latest data rolling in beginning Tonight.
** I do think the Potential of Light to Moderate Snowfall is possible for the Lower Elevations in the Basins and along the I-25 Corridor.
SYSTEM #3) OKAY, so as we lead into the Weekend, our Friday System will erode away but a "Newer" piece of energy from the Pacific will usher in more Moisture as that Frontal Boundary will stay Put along the Laramies and I-25 Corridor. THIS batch of Moisture looks to pack a little more energy than System #2 as it carves out of CA once again. Moisture streams a Low of 1004mb in the West with Upslope potential in the Laramies.
<< Again to Note, ALL THREE Weather Models make the similarities of the Friday>Saturday System of the Timing and Intensity.
* Wherever that Boundary stalls, sets up a good placement of the Heavier Moisture. So far, I-25 Corridor looks prime for Moderate-Heavy Snowfall potential.
EARLY THOUGHTS: Fairly certain Tuesday's Storm will be Light with maybe a burst or two of Moderate Snowfall rates (1"HR) once it moves through BUT System #2 & 3 are NOT set in-stone yet. Lots of Upper Level Energy/Dynamics/Moisture can make this an unsettled late week in WY with the Potential of Heavier Snow Rates (1.5-2"/HR). I AM NOT Throwing out Amounts, but I do think a Double-Digit Snowfall Amount is possible in some spots in the Lower Elevations. Will keep you posted through the Week!
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