Updated 10.29.13 @ 9:37a
Zionsville, IN It’s another calm, cold, quiet start to the day, but changes are brewing. These changes include warmer, more muggy air by tonight and Wednesday, widespread rain and storms for mid week, and another temperature plunge for the weekend.
Tuesday: Mostly cloudy; scattered nighttime showers; 0.10″; 37/ 62
After a calm, cold start to the day, clouds will increase and showers will develop tonight. We currently note widespread rain and embedded thunder across MO, but this will weaken as it encounters our dry air mass tonight. Light rain will likely overspread the region from southwest to northeast as we move through the nighttime hours.
Wednesday: Scattered showers; 0.10″; 55/ 67
The big story on Wednesday won’t be the rain, but instead the briefly warmer surge of air out ahead of our cold front. In fact, most of Wednesday should remain rain-free. Latest high resolution short term model data points to showers and a rumble of thunder exiting stage right Wednesday morning and while we can’t rule out an additional shower or thundershower through the day, most of the time will be rain-free Wednesday. South winds will begin to increase during the afternoon, gusting over 20 MPH.
Halloween: Showers and thunderstorms; 1.10″; 59/ 66
A strong cold front will plow into the state Thursday night. Out ahead of this boundary, abundant moisture will surge north into the area. We’re not looking at all day rains Thursday, but target the afternoon-nighttime hours when rain and thunderstorms will be the most widespread. Additionally, we continue to monitor the severe threat with this system. Widespread and significant severe thunderstorms will be likely across southern IN and points south to include the western TN Valley. That said, severe weather reports will likely extend north to include central Indiana, as well. As of now, the primary severe threat appears to be from a damaging straight line wind perspective across our neck of the woods. Heavy rainfall will also be common as widespread 1″+ rains are likely. Needless to say, you’ll certainly want to keep those weather radios tuned in Thursday.
Friday: Partly cloudy and breezy; 45/ 59
The cold front will be to our east Friday, allowing the sunshine to return. It’ll be a breezy day, but the true cold air advection will hold off until Saturday, so temperatures will be very near seasonal levels Friday with a gusty northwest breeze.
Saturday: Mostly cloudy; PM scattered showers (wet snow flake mixed in); 0.05″; 37/ 47
Fresh cold air will pour into the state Saturday and be accompanied by some upper level energy to create the threat of afternoon scattered showers. Precipitation may mix with a wet snow flake Saturday evening. We think the day shapes up as a cold, raw day that will certainly require that jackets and sweaters.
Sunday: Partly cloudy; 32/ 55
We’ll wrap up the weekend with sunshine returning. Temperatures will begin to moderate closer to where we should be for this time of year, after a cold and frosty start.
Monday: Partly cloudy; 37/ 63
As high pressure moves to our east, it’ll allow a warmer return flow out of the southwest to help take over the region for the start of another work week. We’ll monitor a storm system to our west, but forecast dry skies for now next Monday.