Category: Wintry Mix

VIDEO: Blocking Matures And Forces Stormy Pattern Underneath…

Updated 01.03.24 @ 7:03a After a quiet start to the year, a much busier weather pattern is set to take foot over the span of the upcoming weekend, continuing throughout…

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VIDEO: Tracking 2 Storms In The Short-Term; Long Range Pattern Rumblings- Both For And Against Sustainable Cold…

Updated 01.02.24 @ 7:50a The next few days are quiet and will allow us to catch our breath ahead of a blitz of storm systems that start this weekend and…

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Couple Thoughts On This Weekend And Next Week’s Storms; Colder Trends Build Long Term…

Updated 01.01.24 @ 6:41p

I hope you and your family are enjoying an incredible New Year’s Day! What a game we have on our hands at halftime in the Rose Bowl.

I post this in flight back to home base from ushering in the new year in the beautiful Berkshire mountains. Our regularly scheduled client video discussions will return tomorrow morning. I trust you’ve been following along with both short and long term pattern ideas daily over the past week.

The immediate term opens with quiet and unseasonably calm conditions while the end of the upcoming 10-day stretch will end much colder. The transition between start and finish will turn much more hectic around these parts as we track not one, but two storm systems between this weekend and early next week. While there’s no doubt we’ll trend colder than average by Day 10, questions abound with just how cold we go. Should we get a snowpack down, subzero is on the table.

Speaking of the aforementioned more “hectic” pattern, this kicks into gear over the weekend. While modeling likes more of a suppressed track at this distance, thinking here is that guidance will start to pick up on a more organized northern piece of energy, or surface low reflection, that will accompany the primary Gulf low. I suspect a secondary, organized, shield of precipitation into the OHV region Friday night into Saturday. Will that be enough to put our neck of the woods into a winter storm risk during this timeframe? Too early to call at this distance, but given where the PNA, EPO, and Greenland Block that will be starting to mature, I’d recommend keeping an eye on what will likely be an eventual click or two northwest as the week goes along. It’s likely either a “snow or no” type situation here with storm #1, as opposed to having to worry about rain or mixing issues.

As for storm #2 early next week, our early idea takes the primary low into the OHV before a secondary low “takes over” along the eastern seaboard. The energy transfer likely brings just enough mild air north into the central Ohio Valley to create more of a rain to snow type scenario, locally. The coldest air of the season so far will likely follow in the 10-15 day.

Speaking of the 10-15 day, the look above is an absolute textbook upper air pattern not only for cold, but continued opportunities of winter weather here as we rumble into mid-January. By this point, other long term pattern drivers, such as the NAO and AO (of course to go along with the MJO, PNA, and EPO) will be factored in to where we head not only for the 2nd half of the month, but into late winter and spring. Recent trends certainly suggest the colder options are gaining traction. Today’s European Weekly update reflects a more persistent stretch of high latitude blocking I can remember o/ the past few winters. This ups the ante for a stormy stretch into and through the heart of winter. Given the longer term NAO and MJO look, I’d suspect the colder threat (relative to normal) is on the table into spring this year.

Much more in the AM! Make it a great evening!

Permanent link to this article: https://indywx.com/2024/01/01/couple-thoughts-on-this-weekend-and-next-weeks-storms-colder-trends-build-long-term/

Friday Morning Rambles: Pattern Discussion To Close Out The Year…

Updated 12.22.23 @ 7:15a

We open the period with widespread milder than normal temperatures in the 1-6 day period. Greatest anomalies are centered over the upper Midwest. Note the step down to a pattern, locally, that’s more seasonable if not slightly cooler than normal to close the year and open 2024. That’s the emphasis we want to drive home- though turning colder, we’re not in the camp that our immediate region will have to deal with any sort of arctic air anytime soon.

Days 1-6
Days 6-11
Days 10-15

You know we’ll be keeping close eyes on the Madden Julian Oscillation over the next few days. Should the American guidance come to fruition, then a warmer pattern is certainly alive and kicking after the cooler pattern to open January. Interestingly this morning, early trends are more in favor of the European camp, but it’s still early and we’ll need to monitor closely through the Christmas holiday.

American guidance isn’t as bullish moving into Phase 3 early January with the overnight update.

In the shorter term, morning showers will transition to more of a widespread light rain across the northern half of the state later this afternoon and tonight. Some northern Indiana rain gauges could surpass 0.50″ during this time period from “round 1” of more widespread rain.

Pesky light showers will be around Saturday, but this will be more of a nuisance than anything else. Widespread measurable rain isn’t anticipated. We then flip the calendar to Christmas Eve and the forecast continues to improve. We even anticipate some sunshine to couple with the unseasonably mild air and breezy southerly winds. Highs approaching 60° can be expected as Santa loads up his sleigh.

More widespread rain arrives Christmas Day, especially by late morning and during the afternoon. This is the timeframe when we expect greatest coverage and heaviest rainfall rates of the period. Storm total rainfall of 0.50″ to 1″ still looks like a good bet.

Colder air works in behind the storm and left over “wrap around” precipitation will begin to mix with and change to snow Thursday.

The downhill slide to more seasonable and slightly colder than normal temperatures continues as we close out the year…

Permanent link to this article: https://indywx.com/2023/12/22/friday-morning-rambles-pattern-discussion-to-close-out-the-year/

VIDEO: Topsy Turvy Ride Into Early Next Week…

Updated 12.05.23 @ 6:23a Novelty flakes for some and a cold light rain for others will give way to briefly cooler air as we go into tonight and Wednesday morning…

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Dinnertime Rambles: Talking Snow, Weekend Storm, And Holiday Pattern…

Updated 12.04.23 @ 5:21p

1.) Our clipper system is still on track to deliver a wintry mix of a cold rain and wet snow to central Indiana during the predawn hours Tuesday, continuing into the mid and late morning. We don’t have any changes from this morning’s video update. Thinking is that this is primarily a wet snow event from in and around Indianapolis and points north, including the potential of a coating to a dusting of snow in/ around the city with 0.50″ to 1″ type accumulation of wet snow across north-central Indiana (including northern Indy ‘burbs, such as Whitestown, Zionsville, Westfield, Carmel, and Fishers). Pavement issues aren’t anticipated due to the marginally cold temperatures in place and recent mild air, but slushy accumulation on grassy and elevated surfaces is likely in the areas mentioned above.

Most of the “system” precipitation should be out of here by lunchtime with a chance of a few scattered snow showers returning to north-central Indiana and into Indianapolis Wednesday morning with the weak cold air advection (CAA).

2.) After a seasonably chilly midweek, temperatures will “zoom” into the 50s and even approach 60 before we close the work week out. This is in response to an aggressive southwesterly air flow ahead of an approaching and strengthening surface low pressure system that already has the weather community “buzzin'” several days in advance. While the pattern is conducive for a rapidly deepening area of low pressure advancing from the Ark-la-tex region northeast across the Ohio Valley and Great Lakes, there are still many more questions than answers before we can provide anything concrete with respect to p-type, including potential snow numbers.

The hesitancy in leaning in stronger to this event from a winter perspective, locally, is the lack of cold air available to tap into. That’s not to say this storm will have to generate all of the cold on its own, but we’ll have to have a rapid strengthener to help aid in the cold production if anything meaningful is to transpire on the winter front. All of that said, it’s safe to say that a widespread, wind-whipped precipitation event is becoming increasingly likely this weekend. While the initial lean is still mostly “wet vs. white” for central Indiana, we’ll be watching trends very carefully.

3.) With each passing day, we receive more questions on the weather pattern around the holidays, and understandably so. The key to a sizable shift to more sustained cold and winter weather opportunities lies squarely on the MJO, in our opinion. I’ll include the image we posted here last week below showing the overall MJO evolution into the 2nd half of December. It’s certainly not unreasonable to think that the progression into the colder phases should happen when you extrapolate this out.

Long story short, we have no changes in our idea of a colder shift taking place with the overall pattern around (give or take a day or 2) 12/20.

Permanent link to this article: https://indywx.com/2023/12/04/dinnertime-rambles-talking-snow-weekend-storm-and-holiday-pattern/

VIDEO: Talking Tuesday Morning Snow And The Weekend Storm…

Updated 12.04.23 @ 7:43a A clipper will dive southeast across Indiana Tuesday morning. This will help precipitation overspread the region during the predawn hours and though temperatures will only be…

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VIDEO: Pattern Takes An Active Turn…

Updated 12.03.23 @ 11:18a Our gloomy and chilly Sunday is rather telling for the week ahead, aside from Thursday and Friday where we’ll inject more sunshine and warmer temperatures into…

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VIDEO: Wintry Mix Today Gives Way To The Coldest Air So Far This Season To Open The New Work Week…

Updated 11.26.23 @ 8:50a A wintry mix of rain and snow across central Indiana will fall as predominantly all snow across the northern 1/3 of the state where the best…

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Permanent link to this article: https://indywx.com/2023/11/26/video-wintry-mix-today-gives-way-to-the-coldest-air-so-far-this-season-to-open-the-new-work-week/

VIDEO: Colder Air Flows In; Talking Sunday Snow And Wintry Mix…

Updated 11.24.23 @ 7:50a Quiet, but colder (and blustery) weather will be with us for our Black Friday and Small Business Saturday. Our next weather maker arrives Sunday as the…

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Permanent link to this article: https://indywx.com/2023/11/24/video-colder-air-flows-in-talking-sunday-snow-and-wintry-mix/

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