Mainly Dry Cold Front

Pickin's are slim this week for weather entertainment, although I'm hoping you are getting out for some time in the sun.

On tap for tomorrow is the passage of what looks to be a mainly dry cold front, which is due to arrive tomorrow morning.  The overnight GFS forecast shows the front at 700-mb (10,000 ft or crest level) pretty much right over northern Utah at 1500 UTC 12 April (0900 MDT Saturday).   

By 0000 UTC 13 April (1800 MDT Saturday), the flow has finally come around to west-northwesterly and 700-mb temperatures have dropped to about +4C over the Salt Lake Valley from +9C today.  So tomorrow will be cooler, but still mild, with valley highs in the low 70s and 9500 foot highs in the mid to high 40s. 

Sunday the 700-mb temps will be down even lower and our machine-learned forecast for Little Cottonwood is calling for temps at Alta-Collins  and on Mt. Baldy to be near or just above 20°F.  

Thus, although there may be some clouds around, it looks like we may get a pretty good hard freeze Saturday night. Given the lack of snow, I'm expecting coral reef conditions on Sunday morning.  Patience and playing solar aspects right will be the key to finding corn. 

For now, there's nothing major on the horizon.  We may go deeper into April without a big storm since the April Fools Powder Surprise.  On upper-elevation north aspects in the central Wasatch, peak snowpack water equivalent is often in late April.  I'm starting to wonder if that will be the case this year.