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Category: JMA
Permanent link to this article: https://indywx.com/long-range-update-cool-set-back-doesnt-last-looking-ahead-to-april/
Mar 07
Long Range Video Update: Changeable Pattern For The 2nd Half Of March Into April…
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Permanent link to this article: https://indywx.com/long-range-video-update-changeable-pattern-for-the-2nd-half-of-march-into-april/
Feb 28
Reviewing The New JMA Weeklies; Do We Pull Out Of The Unseasonably Cold Pattern Later In March?
The updated JMA Weeklies are in and we wanted to take a moment to review those with you this morning. A more extensive long range post will arrive tonight. In addition, we’ll also have an updated video discussion around the potential (and increasing likelihood) of a winter storm this weekend later this evening.
Week 1
In agreement with the majority of the other data, the model overwhelms the pattern with unseasonably cold air. Note the anomalous pattern, including strong AK ridge that is helping “dislodge” the late season arctic air. The other item that stands out? The southeast ridge is no longer (for now).
Week 2
Cold is forecast to linger in the Week 2 timeframe, but it’s beginning to modify from the early month bitter shot. Secondly, the high latitude pattern has completely reversed from Week 1 (note the lower heights) and the southeast ridge is showing signs of re-emerging.
Weeks 3-4
Eastern ridging is shown during the mid to late month stretch and gives further reason to believe our mid month warm-up idea has merit. With this, the model also delivers an overall wetter pattern for the 2nd half of the month.
Permanent link to this article: https://indywx.com/reviewing-the-new-jma-weeklies-do-we-pull-out-of-the-unseasonably-cold-pattern-later-in-march/
Feb 16
2019 Spring Outlook…
2019 IndyWx.com Spring Outlook
Forecaster: Team; Date Issued: 02.16.19
Last spring was a tale of two seasons in itself. March (featured a foot of snow) and April were significantly colder than normal and then we shifted things to summer in May (the last month of meteorological spring was close to 10 degrees above normal). As a whole, it was a quiet severe weather season.
Despite the wild swings, at the end of the day, things “balanced out” nicely across the central Ohio Valley, including central Indiana.
As we look ahead to what the 2019 version holds, here are a few headlines that have our attention:
I. Weak Nino is behaving more like a Nina (Tropical Northern Hemisphere pattern can be thanked for this).
II. Neutral NAO is expected
III. Neutral PDO (Pacific Decadal Oscillation)
In addition, we’re paying special attention to the SST configuration in the Gulf of Mexico. A warmer than average GOM can most certainly lead to a more “hyper” severe weather season as spring gets going.
The late winter/ early spring drought monitor can give a hint where early warmth may try and get going. However, this year, we can’t rely on this tool as the Plains and East, including the heart of the #AGbelt, have seen copious amounts of moisture over the winter.
Let’s look at what the model guidance is printing out for meteorological spring:
JMA
CFSv2
JAMSTEC
European Seasonal
Summary
We anticipate a slightly warmer than average spring season across not only central Indiana, but the Mid West and Ohio Valley region, as a whole. A weak El Nino is expected to persist into the upcoming summer and the conditions typically associated with such should eventually show themselves (as opposed to more of a Nina-like flavor now) through the spring. We agree with the consensus of model guidance above that March is likely to feature the coldest temperatures, relative to normal, and that’s primarily due to what should be a colder 1st half of the month before more bonafide spring conditions take hold the 2nd half of the month. Precipitation is anticipated to run near average, if not slightly below average, levels through the spring. As for severe weather, we expect a much busier season than last year, especially with the warm SSTs lurking in the Gulf of Mexico.
Permanent link to this article: https://indywx.com/2019-spring-outlook/
Feb 14
All-Access Morning Video Update: Looking Into Next Week & Reviewing The Latest JMA Weeklies…
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