Category: Freezing Rain

Long Range Update: Latest EPO/ MJO Implications…

Before we dig into the late-February pattern, there’s no let-up in sight with respect to our current active weather pattern. Just next week alone, we’re tracking (3) systems:

I. Sunday

II. Wednesday

III. Thursday-Friday

This is all part of the big battle taking place between a persistent southeast ridge and western trough. The tight thermal gradient between these features will help “fuel” continued active times, and above average precipitation next week. As mentioned this morning, at times we’ll have to deal with bouts of moderate-heavy rain, and at others, sleet, snow, and freezing rain.

An active weather pattern will continue as the ‘mean’ storm track cuts right through the Ohio Valley next week.

Looking ahead, we continue to build our longer range forecast by using “base ingredients” that feature a 50-50 split of the MJO (Madden Julian Oscillation) and EPO (East Pacific Oscillation).

The MJO maintains a warm look, rolling things into Phase 5-6 over the next few weeks.

As you know by now, these are warm phases- especially across the eastern portion of the country.

The “saving grace” for fans of at least being on the playing field for a chance of wintry weather in such warm MJO phases is the negative EPO. There’s great model agreement that this negative EPO will continue into the middle part of the month and this will keep us on our toes for wintry implications as storms track through the region. Conversely, there’s reason to buy into a “blow torch” regime to close the month, as the EPO flips positive and combines with the Phase 5-6 of the MJO.

To no surprise, given the above, we see the new European Weeklies showing a warming trend (after the fight over the upcoming week) for late-February.

The JMA Weeklies from this morning (for the Weeks 3-4 time frame) would agree.

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VIDEO: Short-Term Update Tonight Through Saturday- Ice Gives Way To Snow…

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Client Brief: Conditions Deteriorate By Late Afternoon…

Type: Impactful Wintry Weather

A wintry mix of sleet and snow will arrive into central IN between 4p and 5p.

What: Accumulating snow, sleet, and freezing rain

When: This evening and Thursday morning

Temperatures: Upper 20s to around 30°

Wind: Northeast 10 to 20 MPH

Blowing/ Drifting: Light to moderate across northern Indiana

Pavement Impacts: Salting/ plowing also will be required in the “snow zone.”

A surface wave will move from the middle MS River Valley into the TN and lower Ohio Valley region tonight and Thursday morning. Eventually this system will push into the Mid-Atlantic states Friday.

After a mostly dry daytime, precipitation will become more widespread by late afternoon and early evening. More specifically, we anticipate a wintry mix of sleet and snow to move into Indianapolis and a greater chunk of central Indiana between 4p and 5p. Waves of moisture will continue to impact the region into tonight, but as warmer air aloft moves overhead, precipitation is expected to transition to a mixture of sleet and freezing rain during this time frame. Up to 2 tenths of an inch of glaze is possible across the I-70 corridor this evening. We recommend avoiding travel if possible tonight across central Indiana with icy spots expected to develop on area roadways. Across most of central Indiana, snow and sleet accumulation should remain less than 1″. Further north, precipitation will remain predominantly snow with 2″ to 4″ expected.

Colder air aloft will return Thursday allowing precipitation to transition back to light snow across central Indiana. As upper level support swings through the state, snow should become more widespread Thursday night into Friday morning with additional light accumulation possible.

Confidence: High

Next Update: This evening

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VIDEO: Fresh Data In On Wednesday Night; New Thoughts On This Weekend’s Accumulating Snow Threat…

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VIDEO: Detailed Look At Multiple Rounds Of Wintry Precipitation, Including An Icy Set-Up Tomorrow Evening…

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