- Category Archives Christmas/ Thanksgiving
I.) The pattern we’re currently dealing with is one that presents multiple challenges in the near term. East-central and northeastern portions of the state have gotten in on the snow act today, but, so far, most of central Indiana has missed out on the snowy goods. With such a fast-paced northwest flow, we have to remain on guard for potential “surprises” in this pattern. Perhaps the HRRR is beginning to pick up on this. Latest runs want to deliver a “pop” of snow Wednesday morning, associated with “warm” air advection (WAA). We’ll monitor tonight.
II. The northwest flow will continue to provide disturbances plenty capable of producing periods of snow again Wednesday evening through the end of the week. Are these monster storms? Hardly, but they can “suddenly” become sufficient enough to create travel problems given the pattern. For those who live across the northern half of the state, plan to keep close tabs to local forecasts if you have travel plans through the end of the week.
III. A period of brief moderation will come in this pattern early Christmas week, but all eyes continue to focus on the period between December 22nd through December 26th for the potential of impactful weather across our region. For model “worshipers” out there, we suggest paying more attention to overall trends, and a blend of ensemble data, as opposed to specifics associated with operational runs. It’s a “jailbreak” pattern of sorts as true arctic air will be pouring down the Plains while the southeastern ridge tries to fight for a time. The resistance from the southeastern ridge and associated tight thermal gradient should promote a very stormy regime for the interior (Ohio Valley into the interior northeast) as we head into the true holiday/ Christmas stretch. As of now, we favor the idea of multiple waves along the pressing arctic boundary, as opposed to one big storm. Looking back through the records shows some of the heaviest snows at IND have come from similar set-ups. Understanding each set-up is unique, the overall pattern does have to raise an eye brow for potential of wintry weather in, or around, our region as Christmas approaches…
Temperatures will attempt to approach seasonal norms Monday (average high this time of year is 40°) before arctic reinforcements blow into town Monday night and Tuesday.
This will keep highs in the middle 20s Tuesday with wind chill values in the single digits and teens most of the day.
Scattered snow showers and embedded lake-generated squalls will accompany this arctic surge Tuesday. As the wind trajectory sets up shop Tuesday afternoon, lake effect snow bands will impact portions of northeast and east-central Indiana.
Cold weather will continue to dominate through the work week and an additional upper level disturbance may try to ignite snow showers Thursday.
As we push into the 8-10 day time frame, a “relaxation” of the cold is anticipated, but, as we’ve been discussing, any sort of moderation will be brief in this weather pattern. Cold looks to continue to dominate, overall. With that said, there will be a window of opportunity early next week where temperatures will go above normal for a change and the European ensemble shows this brief moderation nicely.
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.
- Mild open to December
- Early week rain and storms
- Hello winter
Great Weekend By December Standards…High pressure will build in overnight and provide beautiful weather to open December. We’ll enjoy plentiful sunshine and well above average temperatures through the weekend and on into early next week. Take our word for it: Enjoy it while you have it!
An approaching storm system will lead to increasing clouds later Monday along with an increasingly gusty southwest breeze Monday afternoon into the evening. A cold front will move through the state Tuesday with widespread rain and embedded thunderstorms. Strong and gusty winds will continue. Once the front sweeps through the state, falling temperatures can be expected Tuesday evening.
The true shift to winter will begin the middle of next week, complete with MUCH colder air, gusty northwest winds, and scattered snow showers. Speaking of winter, if you’re a fan of the cold and snow for the holiday season, the upcoming pattern change will put a smile on your face. A prolonged stretch of cold and wintry conditions should continue through the holidays and into the new year…
Upcoming 7-Day Precipitation Forecast:
- Snowfall: Trace – Dusting
- Rainfall: 1″ – 2″
The short-term weather pattern will continue to be dominated by rather “boring” conditions for this time of year, along with much milder than normal air. A weak frontal system will swing through here Thursday and while a light shower is possible, that’s really the only significant (if you want to call it that) weather feature through the upcoming 7-10 days.
In addition to the rather quiet weather, relative warmth will dominate as we open December. When “normals” feature lows in the upper 20s and highs in the lower 40s, actual overnight lows will only fall into the low-mid 30s and highs will reach the middle to upper 50s.
When we look ahead, the shelf life of this warmth is certainly limited. The GEFS showcases this shift in the pattern from a warm open to the month towards a much colder pattern very nicely. The GEFS has other model support, as well.
This is the type of dramatic shift in the overall pattern that not only threatens to “lock in” a colder than average regime, but potentially lead to plenty of wintry mischief to boot, and just in time for the holiday season.
There’s teleconnection support for the wintry shift, as well, leading to further confidence of a significant move towards cold, and potentially snowy/ icy, conditions as the true holiday and Christmas season approaches.
To summarize, while unseasonably quiet and mild conditions will rule in the short-term, Mother Nature sure seems to have an attitude of making up for “lost time” in the medium to longer range. This is the type pattern that we’ll have to monitor the potential of some sort of leader-follower scenario as the transition from warm to cold takes place, and given the blocky nature of the pattern, it sure seems like we’re heading into a busy time of things from a wintry perspective mid and late month.
Perhaps this will be the scene as Christmas time nears across the Mid West, including central Indiana? Time will tell…
- Scattered flurries and snow showers Sunday morning
- Dry for Thanksgiving travels
- Rather boring week of weather ahead
November Or December?! A strong cold front is slipping southeast as we type this forecast Saturday afternoon. This will result in a much colder close to the day, along with wrap around moisture transitioning to wet snow later this evening across central and northern portions of the state. Sunday will start off with scattered flurries and snow showers before dry conditions quickly return. It’ll be an unseasonably cold and blustery day.
As folks begin to travel for the upcoming Thanksgiving Day holiday, high pressure will provide an extended period of dry and rather uneventful conditions. A dry cold front will pass through the state Tuesday and help reinforce the chill for Thanksgiving, itself. While we’ll notice gusty breezes at times this upcoming week, precipitation will be hard to come by.
Our next threat of precipitation will arrive this time next week as a cold front moves south. Expect showers Saturday, followed by a wind shift and coldest air of the season by the second half of next weekend.
Upcoming 7-Day Precipitation Forecast:
- Snowfall: Trace – Dusting
- Rainfall: 0.10″ – 0.25″