From 60s to snow this week
Cooler than average today, but sunshine is always a welcomed sight on Sunday. Afternoon temperatures in the low to mid 40s will be slow to cool due to a steady southwesterly wind.
Highs on Monday will rival the warmest of the year… which is 62 degrees for Indianapolis on February 20th. Regardless, Monday will be truly be a treat after the coldest winter since the late 70s.
Expect a repeat performance with the taste of spring on Tuesday. In fact highs in southern Indiana may flirt with 70 degrees, while much of the I-70 corridor climbs into the 60s. This warm up precedes a winter weather system Tuesday night into Wednesday. Though uncertainty on track, strength, and speed exists… there is medium to high confidence of a "shovelable" snow north of I-70. At this point I have medium to low confidence for Indianapolis and points southward for seeing 1 to 2″.
Precipitation begins as rain and arrives by 12am Wednesday. Between 12am and 6am rain will change to snow from northwest to southeast as the colder air funnels rides a strengthening wind field. The timing of the changeover is one of several factors in accumulation potential.
Areas north and northeast of Indianapolis have the greatest potential to see amounts over 2″. Remember this is an "initial" forecast that is highly subject to change being 48 hours away from impact. Back-to-back days in the 60s, timing of changeover from rain to snow, and speed of this system could lower totals. So we advise to check this blog (which is updated multiple times daily) for possible changes to amounts and timing.
Windy, raw conditions ensue Wednesday afternoon as the low pressure system deepens to our east, resulting in blowing snow over much of Central Indiana. A steady diet of strong northwesterly wind pushes temps into the 20s Wednesday afternoon, low teens Thursday morning and keeps highs near freezing Thursday. Thankfully this is spring and readings quickly rebound to near 50 Friday as the air mass quickly modifies.