HEADLINES
– Lower humidity today, with a few showers/storms south/southeast of Indy.
– Humidity and rain chances return Friday.
– Rain this weekend could be heavy.
TODAY’S MAP
NWS TECHNICAL DISCUSSION
A weak cold front was moving through the area, and an upper trough was interacting with this front to bring the showers and storms. The showers and storms will continue at times through the early morning hours with the front slowing down thanks to nearly parallel upper flow. 850mb winds will keep moisture flowing into the area. Will go with with likely or higher PoPs across the eastern and southern portions of the area where forcing is best, with chance or lower PoPs elsewhere. Not expecting any severe storms with instability continuing to weaken diurnally. Today... The front will still be across the southeastern forecast area at the start of the Today period, so will go with chance to low end likely PoPs there to start with. The northwest forecast area will be dry. PoPs will diminish from the northwest during the morning as the front exits/weakens, with all areas dry by early afternoon. Late this afternoon, another cold front will move in from the northwest. Upper troughing will still be across the area, and the northern forecast area will be on the fringes of an upper jet. Moisture won`t be great, but the forcing may be enough to squeeze out some isolated to scattered convection. Will have some slight chance to lower end chance PoPs across much of the northern half of the area. Can`t rule out a shower or storm farther south, but odds are too low to mention. Severe parameters aren`t great, but there looks to be enough downdraft CAPE for some gusty storms north. In between cloud cover today, elevated wildfire smoke will move in. Will keep some sky cover around during this time as well. Enough sunshine will be around today to boost highs into the middle and upper 70s. Tonight... Instability will weaken quickly after 00Z, and this should end the threat for rain along the front. Will keep some low PoPs early in the northeast. Otherwise the night will be quiet. Some elevated smoke will be around, so will continue to keep some sky cover around even after clouds exit. Cooler air moving in behind the front will allow for lows in the lower to middle 50s. && .LONG TERM (Tuesday through Sunday)... Issued at 244 AM EDT Mon Jun 9 2025 Tuesday Through Thursday. The broader synoptic flow will become more northwesterly Tuesday with ridging across the Central Plains and Rockies with the exiting upper level low across the Eastern US. This upper level northwesterly flow will bring additional smoke aloft into central Indiana. A weak surface high will begin to move into the Ohio Valley with light southerly winds at the surface. Upper level flow will turn more zonal Wednesday with the warmest temperatures of the period Wednesday and Thursday with no chance for Thunder on Wednesday. Highs will climb into the mid to potentially upper 80s with overnight lows in the low 60s. Friday Through Sunday. Forecast confidence begins to decreases going Friday and into the weekend as models are struggling to resolve a weak and slow moving low pressure system across the Southern Plains and how it develops as it begins to push eastwards. Precipitation looks likely as this system interacts with a low pressure system riding along the ridge in the Northern Plains down into the Midwest, but the timing and axis of heaviest precipitation remains very uncertain. This wet pattern looks to persist into the late weekend and early next week as the jet stream remains well north of the forecast area with little steering flow to push out the aforementioned low.
INDY SEVEN DAY FORECAST
Today: Some early morning showers, then partly cloudy. Not as humid. High 77.
Tonight: Becoming mostly clear. Low 54.
Tuesday: Mostly sunny morning. Partly sunny afternoon. High 77.
Tuesday Night: Mostly clear. Low 59.
Wednesday: Sunny and warmer. High 84.
Wednesday Night: Clear. Low 63.
Thursday: Mostly sunny. High 86.
Thursday Night: Mostly clear. Low 66.
Friday: Partly sunny. Shower and storm chanc by late afternoon. High 85.
Friday Night: Shower and storm chances. Low 68.
Saturday: Showers and storms. High 83.
Saturday Night: Showers and storms. Low 68.
Sunday: Showers and storms. Heavy rain possible. High 82.
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