Category: Long Range Discussion

VIDEO: Timing The Arrival Of Rain And Amounts; Looking Ahead To Early March Changes…

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Meteorological Spring A Couple Weeks Away, But Trends Suggest Winter’s Not Done…

With the exception of a rain maker blowing through the region Monday evening into Tuesday, we’re heading into a relatively quiet weather pattern for the upcoming 7-8 days. A couple of days of well below average temperatures will follow Tuesday’s cold front before weekend moderation takes place. With the shift in the pattern (albeit likely only for a brief period of time), we thought we’d look ahead to what may loom to close February and head into March.

As we’ve discussed in the past, the EPO and MJO are the keys to the pattern, and will continue to be through March. Some of the recent trends with both features would suggest cold is going to fight back as we head into late Feb and early March (spike positive in the EPO also boosts our confidence the pattern will warm over the weekend and into early parts of Week 2). This would likely be met with a return of an active storm track through our neck of the woods.

Both the GEFS and EPS paint a developing negative EPO as we close the month and welcome March. Secondly, the MJO is looking more and more like it’ll move out of the traditional winter warm phases and towards a much colder Phase 8. Collectively, these features should give pause to anyone thinking the kick-off to meteorological spring will be met with dry, warm weather. In reality, the opposite would more than likely result- stormy with colder than normal weather.

This is also the time we begin leaning more heavily on the influence a negative NAO can have on the pattern. Should this teleconnection get into the negative territory in March, then we’d be talking about a potential colder pattern lasting for 10-14 days towards one that would reload to result in colder, wintry conditions lasting into April. While not there yet, it’s certainly worth keeping an eye on in the coming days and weeks.

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VIDEO: Long Range Update Into Late Feb/ Early March…

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VIDEO: Analyzing Mid-Week Winter Storm Threat; MUCH Colder To Close The Week…

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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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