1.) 2017 continues to fly along. August features 3.13″ of rain during the month and temperatures that start out with an average high and low of 84°/ 65° and 83°/ 62° to end the month. Needless to say, temperatures this weekend will feature well below normal conditions that will feel more like it should jumping forward 6 weeks, or so.
2.) Moisture returns today and results in scattered shower coverage this afternoon and Wednesday. Most of both days will remain rain-free, but don’t be surprised by a passing shower at times.
Scattered showers return this evening across central Indiana.
3.) More widespread coverage of showers and thunderstorms arrive Thursday afternoon into Friday morning as a strong cold front presses into the state. Localized heavy rain is possible and rainfall totals of 0.50″-1.00″ can be expected (with locally heavier amounts under stronger storms) between now and Friday.
4.) As surface low pressure wraps up over the Great Lakes Friday, it’ll help pull unseasonably cool air south into the state, along with gusty northwest winds. In fact, temperatures will remain steady or slowly fall as we move through the day Friday. It sure won’t feel like the first weekend of August as temperatures tumble into the 50s area-wide Saturday morning.
Temperatures will feel more like late-September this weekend.
Additional rainfall of 1″-1.5″ is likely from Indianapolis and points south and east with this band of rain before drier weather finally works in here this afternoon and evening. Otherwise, expect continued windy, cold, and raw conditions today as temperatures remain in the 40s this afternoon, including wind chills in the 30s.
We’ll finally get rid of the rain and introduce a drier regime Saturday afternoon into Sunday, including a sunny close to the weekend. With the drier air, overnight lows will fall to frosty levels Sunday and Monday mornings (lower to middle 30s).
Highlights:
We’ll begin to dry things out Saturday night into Sunday, but unseasonably chilly air will remain. Lows over the weekend into early next week will grow cold enough to allow patchy frost to develop in outlying communities. We think low to mid 30s will be common across the region Sunday and Monday mornings.
Highlights:
The individual GFS ensemble members are truly concerning, especially given just how wet we currently are. We note some members suggest additional 3″-4″ totals- with over 50% of that coming from our midweek storm.
We’ll keep a close eye on model data over the next couple of days, but as of now, we suggest planning for additional hefty rain totals in the Wednesday night through Friday time frame. Also of interest will be the extreme cool associated with this storm. As previously mentioned, the majority of the day Thursday will be spent in the 40s (more like early-March than early-May). Factor in a gusty easterly breeze and we’ll have the makings for a truly “raw” weather day across the region.
Highlights:
We think an eastward-advancing line of thunderstorms will blow into central Indiana later this evening (between 9p and midnight). Some of these may reach strong to severe levels with damaging straight line winds of greatest concern. Additionally, torrential downpours will occur within this line of storms.