We have a disturbance kicking off widespread convective snow showers this afternoon across the entire Ohio Valley. A lot of this is melting because of it being daytime, and mid-March, but the heavier bursts are putting down quick coatings. Watch out for rapidly changing conditions when your out this afternoon. These will dissipate after sunset.
The next system arrives later tomorrow. This one continues to trend colder - so light snow is looking more likely with this one for more areas. Here is the latest GFS for tomorrow evening. The blue line is usually the main rain/snow line.
With that said, the track and the timing is KEY for potential snow accumulations for your area. Right now, this looks to move in by the evening rush hour. Most of this will be melting on contact. As dusk approaches, the snow may begin to stick on grassy surfaces, but the system will also begin to exit near that time. Right now, I think the best chances of getting a quick inch or so would be areas along and east of I-65. Will have to fine-tune this forecast tomorrow, but overall-not a huge deal anyway.
We try to get some warmer air in here Friday, with the return of some sunshine. A temperature range from near 60 in southern Indiana, low 50's central, and upper 40's north looks good at this time. Friday is also the St. Patrick's Parade in downtown Indy. The parade starts at 11:30. Temperatures will probably be in the low 40's at that time, along with a breeze. Dress accordingly, but it could be worse! It will actually be very warm across the Plains, but just when it looks like it's headed our way, it never makes it here as a cold front moves in from the northwest flow keeping that warm air from ever really surging into Indiana. The map posted below is the GFS 850mb temperature forecast for Friday. I circled the much warmer air mass just missing us to our west.
The weekend will feature a big temperature difference north to south across the state. Highs could range from the 50's in southern Indiana to the 30's in northern Indiana, as a front stalls out over southern Indiana. A wave of showers looks possible early Saturday, then a more organized system Sunday into Monday to affect mainly the southern part of Indiana. The GFS indicates the northern part of the precip shield could bring some light snow mixed with the rain to parts of southern Indiana Sunday night. European is the farthest north and says a MAJOR snow storm for central and northern parts of Indiana. It's an interesting solution and because of the model's accuracy, I don't want to totally ignore it. (Map posted below is the GFS late Sunday).
The next issue is the main storm system out of all of later Monday into Tuesday. Widespread rain looks likely Monday afternoon, then perhaps changing to light snow late Monday night.
So there's the forecast to the best details as I can. I hope that helps you to better plan the next several days! Thanks for reading.
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