I. It’s a state divided this afternoon with winter across the northern third of the state (most are in the 30s), seasonable spring conditions central (low-mid 60s), and 70°+ downstate. Unfortunately, we’ll all turn colder tonight and as low pressure scoots east across the Ohio Valley, it’ll help pull a swath of wet snow across the northern half of Indiana after midnight through the predawn hours Thursday. Further north and northeast, a wet accumulation of an inch or less can be expected.
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…
More specific to Indianapolis, here’s the monthly temperature breakdown so far for 2018:
While we have conflicting temperature ideas, both suggest a drier than average month emerging:
At the end of the day, our call on May’s forecast from mid-April would be for an early cooler than average start before flipping towards more of a seasonable to slightly warmer than normal regime. Our idea all along this spring has been that when this pattern flips, the potential is present to jump right to a summery feel. In the face of the new European Weeklies, we still feel this warmer idea mid and late May is on the table. We’re in agreement with the data of a drier than average month.
While we’ll deal with light rain Saturday morning, light snow Monday with upper energy and a transient shot of cold air, the primary message through next Wednesday is that our weather pattern will be rather benign considering we’re in the “heart” of winter. In fact, our current 7-day reflects (3) days of highs of 50°, or greater. That’s impressive for late January, and you have our full permission to enjoy every minute of it! 🙂
A combination of ingredients will come together to initially lead to a very active/ stormy period for the first half of February. Within this initial couple weeks of the month, we expect an expanding snowpack to encompass the Mid West and Ohio Valley region. While we can’t get specific on any one particular storm more than two weeks out, confidence is higher than normal on the pattern putting down greater than average amounts of the white stuff. Snow enthusiasts, locally, have to be “salivating” over the resistance put up from the eastern ridge and the resurgent cold pressing into the Plains and Midwest. A busy interior storm track seems like a good bet.
This will keep highs in the middle 20s Tuesday with wind chill values in the single digits and teens most of the day.
This doesn’t last long as the pattern begins to reload as Christmas week approaches. As the evolution to a fresh cold pattern takes place, there’s a window of opportunity present for a more significant wintry system to potentially impact the Ohio Valley into the Mid Atlantic region. Notice the relatively “flat” ridge across the southern tier and associated tight thermal gradient. This look suggests we need to be on guard for the chance of a storm system to ride the thermal gradient in a west-to-east fashion, and has wintry implications for our region. Far too early for specifics; just know the possibility looms of a wintry event, locally, as Christmas week nears.
Speaking of Christmas, it sure appears as if cold will overwhelm the pattern for Christmas, itself, and the overall cold regime doesn’t show signs of letting up (with the exception of potentially a day or two) into the new year.