Category: European Model

50/50 Split On Sunday Night Snow…

Quick-hitting Bullet Points:

  • Light snow Saturday night
  • Still questions around Sunday night snow potential
  • Even colder air invades early next week
  • Fun and games continue in the longer range

The afternoon model suite is in in it’s entirety and it leaves us with about as many questions as answers :-)…

Four of our more trusted short-term forecast models are split 50/50 on the outcome Sunday night.  In the snowy camp you have the NAM and European.  In the drier camp you have the GFS and GEM.  Past experience with this type event says the European and NAM solutions may have the better handle and we think the drier modeling will shift a touch northwest with time over the upcoming 24 hours.  The difference between camps would be a nice 2-3″ type snowfall for the Monday morning commute across central Indiana versus nothing more than a few flurries.  More as the details become clearer…

We still forecast light snow to overspread central Indiana Saturday evening and night.  While this won’t be a big deal, a dusting to 1″ of snow is a good bet across most of central Indiana, especially from the I-70 corridor and points north.  Roads may be slick in spots on your way to church Sunday morning.

One thing that’s a certainty is that another blast of arctic air will invade along with scattered snow showers early next week.  This push of bitter air will be even colder than this weeks.

In the longer term, plenty of wintry “fun and games” remain.  In fact, today’s 12z European has the look set to offer more meteorological headaches come late next week.  Ah, the season is only beginning… 🙂

f168

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Weekly Outlook: Heading Straight Into Winter

November is off to a cold start, but a byproduct of the unseasonably cold pattern is a relatively dry one, as well. Brisk southwest winds are blowing this morning and…

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Weekly Outlook: Busy Times In The Weather Office…

October finished colder than average (-0.8°) and slightly wetter than normal (+0.05″). The full October summary can be found here: http://www.crh.noaa.gov/news/display_cmsstory.php?wfo=ind&storyid=104988&source=0 November has gotten off to a rip-roaring start if…

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Wednesday Evening Video Update…

Good afternoon and welcome into IndyWx.com!  Here’s a quick video brief concerning the weather situation across central Indiana over the course of the week ahead. By the way, if you’re…

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The Ups And Downs Of Autumn…

It simply doesn’t get much better than this!  Wall-to-wall sunshine and temperatures in the lower to middle 70s across central Indiana this afternoon…  If you aren’t outside now, we are making it mandatory to get outside upon reading this!  🙂  Enjoy, as the ups and downs of autumn will send us in an opposite direction late in the upcoming week.

Forecast models are coming into better agreement on the evolution of things heading into next weekend.  While there are still a couple of important differences between the GFS and European, we’re growing increasingly confident on a much colder feel next weekend.

Note the latest GFS operational run stacked atop individual ensemble members.  Needless to say, there’s ensemble support and leads to a higher confidence forecast in the mid range of a deep trough carving itself out across the Mid West and East.  Unseasonably cold air would be associated with this.

GFS

 

 

 

 

 

 

 

 

 

 

Meanwhile, the European model is more extreme, suggesting a cut off feature develops across the southeast before helping spawn a Nor Easter and leading to high ground accumulating snows from the southern Appalachians northeast along the spine of the mountains.

Again, there’s ensemble support (left) to go with the operational run (right).

EC1

EC2

Whether or not we get some sort of cut off low pressure system to really dig in and help generate high ground snow is up for debate and will be the focal point for many for the upcoming week.

Back here on the home front we’re becoming increasingly confident on the first push of wintry type air here next weekend and timing will have to be fine tuned as we move forward, including the all-important Halloween forecast.  The type air mass moving in will most likely put an end to the growing season across these parts as it’s likely capable of producing multiple below freezing nights.

Much more in the days ahead!  In the meantime, enjoy what we have in front of us now!

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