Category: Winter Storm

02.13.21 Weather Bulletin: Snowfall Forecast Issued; Initial HVY Snow Zone Idea For Midweek…

Updated 02.13.21 @ 9:56a

Back-to-Back Winter Storms…A weak trough of low pressure extends south into the northern portion of Indiana this morning. This will serve to help enhance snow “up north” through the day- including a little lake enhancement this evening. Scattered snow showers will work into central Indiana later this afternoon into the evening, but shouldn’t be a big deal.

Bitterly cold air will greet us out the door Sunday morning, but this will be the proverbial calm before the storm. A mix of clouds and sun will give way to an increasingly cloudy sky during the evening hours and snow will break out from southwest to northeast late Sunday evening into the overnight and predawn Monday. This is the “1st wave” of the early week storm. A lull in the snow is possible late Monday morning into the early afternoon before the real show begins Monday evening into the predawn hours Tuesday across southeast Indiana. This will be a very cold storm and snowfall ratios will be much higher than standard 10:1 (closer to 15-20:1) which means this should be an efficient snow producer across the region. The dry, powdery nature of the snow will blow about quite easily and snow removal clients should prepare for an extended period of significant blowing and drifting issues through the upcoming week (even well after the falling snow stops).

Here’s our first stab at accumulation with Storm #1. We’ll refine these numbers if need be moving forward.

Morning snow will end from west to east Tuesday morning and we’ll have about 24 hours of relative calm before additional fun and games roll into town Wednesday night. While still early, there seems to be potential for Storm #2 to be more significant across a larger chunk of the state. We’re noticing the majority of forecast models starting to “bulk up” on precipitation amounts with this storm and the negative PNA will likely continue to force the storm ever so much further west with time. The potential is even present for more mixing issues as warmer air aloft is drawn in across southeast Indiana. Where things remain mostly (if not all) snow, a big hit is likely Wednesday evening into Friday morning. Let’s get through the day tomorrow before getting specific with totals, but here’s our initial idea.

Permanent link to this article: https://indywx.com/2021/02/13/02-13-21-weather-bulletin-snowfall-forecast-issued-initial-hvy-snow-zone-idea-for-midweek/

VIDEO: Use The Weekend To Prepare…

Updated 02.12.21 @ 5:50p

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02.12.21 Weather Bulletin: Continuing To Keep Close Eyes On Next Week…

Updated: 02.12.21 @ 7:34a

Use This Weekend To Prep…The short-term portion of this forecast is relatively quiet. Take advantage and prepare for significant winter weather next week. We may even see a few breaks in the cloud cover today. All in all, look for mostly cloudy and continued cold conditions. Keep in mind, average highs this time of year should be close to 40°. We’ll be nowhere near that anytime soon. In fact, most days will feature high temperatures even colder than average lows for this time of year!

Reinforcing arctic air will penetrate the area Saturday and will likely kick up some light snow showers- especially during the afternoon. Light snow will remain a possibility Valentine’s Day, but “light” is the key word.

The more exciting part of this forecast comes at us as we open the work week. Surface low pressure will develop in the northwest Gulf of Mexico Sunday night and track northeast up along the Appalachians. This will spread a swath of snow into the Ohio Valley through the day Monday. It appears as if snow will become heavy at times Monday evening into the predawn hours Tuesday before tapering to light snow/ snow showers late Tuesday morning. This will be a much more powdery snow than we typically see with these Gulf storms, due to having truly arctic air involved with the storm. Gusty winds will create significant blowing and drifting issues throughout the early and middle portion of the work week.

That then leads us to the threat of another significant winter storm as we push into Wednesday night into Friday morning. We don’t want to get ahead of ourselves, but the threat is very real that this storm also deals out heavy impacts across the region with additional heavy snow possible during the aforementioned time frame.

We’d suggest using the weekend to prepare for the potential of two back-to-back “big deal” winter storms. We’ll be here through the weekend with additional updates.

Averages: H: 39/ L: 23° on the 12th –> H: 41°/ L: 25° on the 18th

Permanent link to this article: https://indywx.com/2021/02/12/02-12-21-weather-bulletin-continuing-to-keep-close-eyes-on-next-week/

VIDEO: Long Range Update And Fresh Thoughts On Next Week…

Updated 02.11.21 @ 10:48p I apologize for the abrupt stop in tonight’s video. After rambling on for close to 20 min., YouTube informed me that I had to trim under…

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VIDEO: Long Hours In The Forecast Office Ahead…

Updated 02.11.21 @ 7:55a

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Reasons For (And Against) The “Big One” Next Week…

Updated 02.10.21 @ 6:23p

Before we look ahead, snow continues to fall across most of central Indiana. So far, immediate downtown Indy has avoided significant snow, but other areas are approaching 1″ to 2″ already as of this post. We continue to believe another band of snow will organize during the overnight into the predawn hours across central Indiana (especially along and north of the I-70 corridor). Given how cold it’s been as of late, even the lightest snow is creating havoc on area roadways. As winds become gusty, blowing and drifting issues will remain into the day Thursday.

As we look ahead, this pattern remains nothing short of remarkable. Feb. 5th (last Friday at 6p) was the last time Indianapolis was above the freezing mark. As we look ahead, we’re likely talking about another 12 days below freezing (if not longer). The “moderation” that some models are hinting at after that time frame isn’t something I’d label as high confidence at this point. That’s rare territory for central Indiana- even during some of the infamous cold winters of the “good ole days.” There’s also already been a fair share of snow events in this pattern. Sure the big one hasn’t hit (yet), but many across the state are getting used to clearing snow off the sidewalk and driveway on a daily basis. Not counting today’s snow, Indianapolis, officially, sits at 2.3″ month-to-date. Areas downstate received as much as half a foot (or more) earlier this week. As we look ahead, there’s a lot more white gold where that came from. (Keep in mind, the “average” snow total during the month of February in Indianapolis is 6.5″).

A fresh intrusion of arctic air will arrive just in time for the weekend. We’re looking at a mostly dry stretch of weather through the weekend, with the exception of some light snow prospects Saturday. Again, given how cold it’s been, even these light snow events will likely create travel trouble.

The coldest morning appears to be Sunday with lows falling to between 3° and 6° below zero. Wind chill values will approach 20° below zero, or worse, in spots.

By this time, all eyes will be on the developing storm system in the northwest Gulf of Mexico. There’s already been a great deal of chatter about this storm and that will only continue to ramp up as we move forward. Given the overall pattern and model consensus at this juncture, there’s plenty reason to believe the Ohio Valley, including central Indiana, is in store for a significant winter storm early next week.

With that said, nothing is a lock in this business. While the negative PNA (image 1 below) argues for the southeast ridge to “flex” it’s muscle and lead to a more inland track, the fact arctic air will be pressing southeast (image 2 below) does at least raise an eyebrow for potential shifts southeast in time over the next couple of days. It’s another fascinating meteorological battle we’ll have the pleasure to watch unfold in real time.

As it sits right now, we favor a storm track that will be far enough west to put central Indiana in play for potentially significant wintry precipitation (far too early to throw numbers out). The early call is for surface low to move out of the northwest Gulf and track west of the mountains before a secondary low take over along the Mid-Atlantic and moves northeast off the New England coast.

If this wasn’t enough, another storm system likely follows later next week that could also produce additional wintry “goods.”

Will every storm produce in your backyard? Negative. That said, when we get to March 1st, central Indiana winter weather fans are likely to look back on February 2021 as a truly special ride.

I suppose time will tell…

Permanent link to this article: https://indywx.com/2021/02/10/reasons-for-and-against-the-big-one-next-week/

VIDEO: The Beat Goes On; Looking At The Pattern Into Late-Month…

Updated 02.10.21 @ 8:30a

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02.09.21 Weather Bulletin: “Active” Would Be An Understatement…

Updated 02.09.21 @ 8a

Keep That Head On A Swivel…Before we talk about what’s ahead, it was a snowy night across south-central Indiana. Many of the reports coming in from down that way indicate our 3″ to 5″ forecast played out quite nicely, including most common snowfall totals between 4″ and 5″ (with a few isolated heavier amounts). Thank you for those ground truth reports, friends! I know we’ve said it before, but they are more valuable than you know!

Now to look ahead. Storm systems will come flying through fast and furious over the upcoming 7-days. Scattered lingering snow showers and flurries today will give way to a steadier snow as we move into Wednesday. Meanwhile, an icy mixture of sleet and freezing rain is expected across far southern Indiana. After the 12z model suite is complete this afternoon, we’ll be back with a fresh look on expected snowfall amounts later this evening.

Friday appears to offer up a much needed one day breather from wintry systems with cold, dry conditions expected. Then our attention will shift to the weekend and threat of potentially a more significant winter storm. Guidance is trying to sort out which feature has the best chance of phasing into a more potent storm system. The GFS likes the lead wave this weekend while the European holds things off until early next week. Please stay tuned.

Permanent link to this article: https://indywx.com/2021/02/09/02-09-21-weather-bulletin-active-would-be-an-understatement/

VIDEO: Cold, Snowy Pattern Locking In For The Foreseeable Future…

Updated: 02.08.21 @ 5:35p

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Multiple Snow Makers; Cold Grows More Bitter…

Updated 02.08.21 @ 8:32a

Most of the daytime today will only feature light snow, but don’t let that fool you. With such a cold, arctic airmass in place, even the “light” snow is creating travel issues in spots. Take it slow out there, friends.

A new piece of upper level energy will streak across the region tonight and help snow to become more organized in aerial coverage. A narrow, but efficient band of steadier snow is expected to get going across south-central Indiana around, or just after, sunset. It’s within this snow where we expect several inches of snow to accumulate tonight and early Tuesday morning.

Snow will become moderate to heavy at times across south-central IN tonight.

Most of the steady snow will exit to the east before sunrise Tuesday. We’ll then be left with periods of flurries and light snow through the remainder of the day.

Here’s our snowfall forecast with tonight’s system:

Attention will then shift to a “juicier” midweek storm system. An arctic boundary will remain draped to our south while a surface wave rides northeast along the stalled front. This will allow more widespread, heavier precipitation to push into the region (from southwest to northeast) through the morning Wednesday. For a time, moderate to heavy precipitation rates are expected Wednesday evening into Wednesday night. The early call on this system continues to be for an all snow event across central Indiana (where we think 3″ to 6″ of fresh snow is a good bet) with more of a wintry mix of snow, sleet, and freezing rain across southern portions of the state as warmer air aloft gets pulled north. Unfortunately, I think even southern portions of the state remain cold at the surface, continuing the threat of an icy glaze vs. a plain ole rain.

Widespread wintry precipitation will overspread the region Wednesday.

Here’s our snowfall forecast for Wednesday and Thursday:

As the snow continues to add up, concern will mount around the issues that will likely come from a blowing and drifting perspective- especially as a fresh arctic intrusion arrives late week. If that wasn’t enough, additional “fun and games” are on the table for the upcoming weekend, followed by the coldest air so far this season (and in some cases in a couple of years).

Stay tuned…

Permanent link to this article: https://indywx.com/2021/02/08/multiple-snow-makers-cold-grows-more-bitter/

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