THURSDAY AFTERNOON UPDATE: Much of our weekend precipitation now appears to coming in the form of rain Saturday afternoon until late evening (say, 10pm-midnight range) Saturday when it will change to snow that should last through Sunday morning. The likely accumulations over much of central Indiana are about 1-3 inches. My listeners north/northwest of Lafayette, and in the South Bend area could get as high as 4 inches. ANY snow that accumulates will blow and drift on Sunday, with bitterly cold breezes Sunday afternoon into Monday.
**Remember, there could be a coating to 1 inch of light snow in the northern half of the state from tonight through early Friday morning, possibly ending with a period of freezing drizzle just before daybreak Friday.**
The two quick charts show you the center of the storm and the Arctic air rushing in. The first depicts Saturday Night, the second shows Sunday Morning. Those solid lines show areas of equal air pressure, and when they get close together, get ready for the bitter breezes. This scenario shows the center of the low going right over central Indiana, which would keep the heaviest snow north and northwest of, say, Lafayette to Kokomo.
Plan accordingly, but skip the bread. Those Hostess Twinkies last forever.