Category: EPO

More On The Late March-Early April Pattern And Reviewing The NEW JMA Weeklies…

As we look ahead, a persistent western Canada/ Alaska ridge continues to show up on the medium to long range data. The downstream implications are for cooler than normal temperatures, overall, across the eastern and central portions of the country into early April.

Upper air pattern- Days 4-9
Surface temperature anomalies- Days 4-9
Upper air pattern- Days 9-14
Surface temperature anomalies- Days 9-14

Given the time of the year (and pattern), cool won’t rule the entire period. It’s just that the cold will “out do” the transient warmth in between storm systems over the next couple of weeks.

When we look at the teleconnections (combo of negative EPO and neutral to slightly positive PNA is ruling the day for now), they support the lingering chill into early-April.

However, as we turn the page from early-April to mid-April, the idea here is that an eastern ridge will begin to expand west with more “umph” and eventually lead to warmth overwhelming the pattern. We aren’t budging from the original idea of a warmer than normal April by month’s end. It sure appears as if the NEW JMA Weeklies are catching onto this idea.

Weeks 3-4 (mid April) forecast upper air pattern.

From a precipitation perspective, the majority of medium and long range model data does show a return of wetter times (relative to normal) as we move into April, including an active storm track. The beginning of this overall shift in the pattern back towards wetter than normal conditions will begin early next week.

We’ll recap our latest short-term thinking, including an update on the NEW European Weeklies that will arrive this evening later tonight in a video update.

In the meantime, make it a fantastic Thursday- and happy tip off to March Madness!

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Tuesday Morning Video: Reason To “Tap The Brakes” On Late Month Warm-Up?

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Long Range Video Update: Changeable Pattern For The 2nd Half Of March Into April…

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VIDEO: All-Access Long Range Update…

This evening’s long range video update discusses the pattern drivers behind the late-March weather pattern…

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Snow Update And Looking Ahead Towards Mid-March…

Snow will overspread central Indiana through the late morning hours into the afternoon.

While the overall idea where the accumulating snow would fall was a good one from early week, our initial expected amounts won’t come to fruition. The reason? The storm system is much weaker and faster moving than originally modeled.

Accordingly, this is a 1″ to 2″ type event for most of the area. The majority of the snow will fall from noon to 5p.

A period of snow will scoot across central Indiana from late morning into the early evening hours.

This same storm system will be responsible for a severe weather outbreak, including the possibility of a couple of strong tornadoes, across the Deep South this afternoon.

Back here on the home front, MUCH colder air will pour into the region this evening, remaining in place into the new work week. Back-to-back nights with lows in the upper 0s to lower 10s can be expected across central Indiana Monday and Tuesday mornings.

This is all part of the overall colder than normal first half of March, powered by the SOI crash (several week ago), deeply negative EPO, and MJO rumbling through the cold phases.

Additional storm dates to keep note off include Thursday night into Friday (more of a wintry threat with the 3/7-3/8 system) and Saturday into Sunday (potential strong thunderstorms with the system on 3/9-3/10).

Looking ahead, it still appears the mid-March warm-up is on track as the EPO flips to positive.

With that warm-up will also come a return of heavier precipitation events and a continued overall active storm track across the region. Precipitation looks to run above average for the mid-month stretch.

We’ll dig deeper early week on what lies ahead as we close the month of March and look ahead towards April…

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