Light At The End Of The Tunnel From The Recent Dry Regime?
In our JMA Weekly recap from last week, we noted the model was transitioning towards a wetter pattern for early and mid June.
It’s encouraging to see the latest ensemble data from the American GFS and European (courtesy of TropicalTidbits.com) support this idea, as well.

In addition to a wetter pattern, we would also want to pay attention to the potential of a gusty storm complex or two riding southeast around the hot dome off to our southwest.
After an unusually dry May (- 3.44″ as of this post), Alberto’s remnant moisture will help us, at the very least, cut into the rainfall deficit tomorrow. Longer term, it sure is nice to see the medium range guidance in agreement on a wetter time of things. As we’re all aware, this is a crucial time to determine the overall long-standing summer pattern. Dry ground and early warmth can easily “feedback” on itself, and it’s easy to understand some of the concern, particularly AG-related over the past few weeks. With that said, it’s certainly not too late to try and at least ease some of the worry a bit.
When we look at the MJO, we note the amplitude and it’s forecast to swing through the wetter phases, at least locally, (4,5,6) through the month of June:

In closing, the JMA Weeklies led the charge in the idea of more active times returning in June, and the combination of GFS and European ensemble data suggests they had merit. With the added bonus of having the MJO on our side, it’ll be hard to avoid a change of the guard towards an overall wetter pattern in the weeks ahead. Perhaps Alberto’s remnant moisture is only the beginning…
2.) Sunshine will develop as the day progresses Friday and we’ll notice an increasingly muggy feel through the afternoon and evening. A true taste of summer can be expected as we put a wrap on the work week, including highs in the middle 80s and dew points climbing into the mid and upper 60s.
Also note the tight temperature gradient across the state. That temperature gradient will serve as the focal point between a mostly dry central Indiana through the first half of the weekend and “busier” times across northern parts of the state into the southern Great Lakes region. Locally heavy rain will fall at times with storms for our friends “up north!” We’ll remain very summer-like here into next week.
4.) The balance of next week will run significantly warmer than normal and feature an almost daily threat of showers and thunderstorms. While there will be some “haves and have nots,” most area rain gauges should accumulate 1″ to 2″ of rain by the end of next week.

5.) Speaking of rain, the new European Weeklies in tonight, courtesy of weathermodels.com, also point towards wetter times in our future. This is encouraging as it supports the going idea shown this morning from the JMA Weeklies, CFSv2 Weeklies, and GEFS. Needless to say, despite the recent dry shift, we’re not concerned for long term moisture issues (or lack thereof ;-)).
After a chilly work week (relative to average), 60s will return this weekend and temperatures will zip into the lower and middle 70s early next week, before approaching 80° by the middle of next week.
Despite the showers that will impact central Indiana today, it’s mostly a dry pattern over the upcoming 10-day period. Additional rain chances will continue Tuesday (scattered, nuisance-level) and with a frontal passage Friday. With that said, 10-day rainfall will only run between one half and three quarters of an inch for most of the region.
II. We’ll turn cooler to close the week, but with an increasingly sunny time of things, we forecast a very pleasant open to the weekend. High pressure will remain in control of our weather into early next week. Really the only item of interest will be a gusty easterly breeze at times Sunday into Monday. We’ll watch a storm system get shunted south and stay dry here. Overnight lows will remain chilly through the weekend.
III. The next opportunity for meaningful precipitation should arrive the middle of next week (Tuesday-Wednesday) time frame, and even this doesn’t look like a big deal. From this distance, it seems like 0.10″ to 0.25″ will come from that system.
IV. As we look ahead, the relative cold looks to relax as we put a wrap on April and open May. Additionally, we also note the EPS painting much of the northern tier into the Ohio Valley with a drier than normal signal. Sure looks like conditions are finally improving for #Plant18 to get underway in earnest…
