Category: Unseasonably Cool Weather

Weekly #AGwx And #Harvest21 Outlook…

Updated 09.05.21 @ 8a

The upper air pattern this week will feature a trough across the Northeast and Great Lakes with an upper ridge anchored over the Four Corners.
Temperatures will run below average from the Ohio Valley into the MS Valley, with well above normal temperatures expected across the West.
Most of the country can expect below to well below average precipitation in the week ahead. The one exception? Northern New England.
We only forecast 0.10″ to 0.25″ of rain here in central Indiana during the 7-day period.

Forecast Period: 09.05.21 through 09.12.21

A very quiet weather pattern will settle into the region as we go through the upcoming week. The one exception to that is Tuesday night as a cold front quickly passes through the area. Moisture levels will return ever so slightly ahead of the boundary and may be enough to produce a couple of storms Tuesday evening (widely scattered coverage). The front will help to reinforce the dry airmass in place, along with provide cooler temperatures for mid and late week. As we look ahead beyond this week, indications are that things will moderate and turn a bit more active (though that’s admittedly not saying much, considering just how quiet things will be this week).

Permanent link to this article: https://indywx.com/2021/09/05/weekly-agwx-and-harvest21-outlook/

VIDEO: Unsettled Weather Today Gives Way To A Return Of Pleasant Conditions…

Updated 09.04.21 @ 10:05a

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VIDEO: Saturday Showers Give Way To A Pleasant Sunday And Labor Day; Warmer Mid-Month Trends…

Updated 09.03.21 @ 8a

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Permanent link to this article: https://indywx.com/2021/09/03/video-saturday-showers-give-way-to-a-pleasant-sunday-and-labor-day-warmer-mid-month-trends/

VIDEO: Tracking A Couple Of Cold Fronts Saturday Morning And Next Tuesday…

Updated 09.02.21 @ 8a

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Permanent link to this article: https://indywx.com/2021/09/02/video-tracking-a-couple-of-cold-fronts-saturday-morning-and-next-tuesday/

VIDEO: Extended Stretch Of Early Fall-Like Weather As We Welcome In Meteorological Autumn…

Updated 09.01.21 @ 5:26p

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September 2021 Outlook: Welcome to Meteorological Fall…

Updated 09.01.21 @ 7:30a

Welcome to fall- at least from a meteorological perspective! Averages in Indianapolis for the month of September include highs that fall from 82.6° on the 1st to 72.7° at month’s end. Lows drop from the lower 60s (62.5°) to the low 50s (51.6°). We average 3.2″ of rainfall during the month.

As we look at September 2021, the month will get off to a cooler than normal start, but we don’t think we’re quite done with the warmer temperatures. The MJO is forecast to rumble into the notorious warm phases for September and the EPO is showing signs of wanting to spend most of the time in a positive manner.

The MJO, currently in “cool” Phase 2 is expected to emerge into warmer phases over the next couple of weeks.
While negative now, the EPO is expected to remain neutral to positive through the majority of the month ahead.

We’ll take this into account, along with factoring in the trends from the latest longer range computer models (European Weeklies, CFSv2, and JMA) to build our September forecast:

Summed up, we’re talking about a month that is very near seasonal norms from a temperature perspective (once all is said and done) and slightly wetter than average.

Permanent link to this article: https://indywx.com/2021/09/01/september-2021-outlook-welcome-to-meteorological-fall/

VIDEO: Tracking Heavy Storms Over The Next 24-36 Hours Before Much Drier, Cooler Air Invades To Close Out The Week…

Updated 08.30.21 @ 7:50a

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Permanent link to this article: https://indywx.com/2021/08/30/video-tracking-heavy-storms-over-the-next-24-36-hours-before-much-drier-cooler-air-invades-to-close-out-the-week/

VIDEO: Devastating Hurricane Ida Makes Landfall This Afternoon; Tracking BIG Changes Here By Midweek, Continuing Into Labor Day Weekend…

Updated 08.29.21 @ 11a

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VIDEO: Explaining How Ida And A Cold Front Can Work Together To Draw In MUCH Drier, Cooler Air Leading Up To The Labor Day Weekend…

Updated 08.27.21 @ 9:15a

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Permanent link to this article: https://indywx.com/2021/08/27/video-explaining-how-ida-and-a-cold-front-can-work-together-to-draw-in-much-drier-cooler-air-leading-up-to-the-labor-day-weekend/

Meteorological Fall Only 5 Days Away- Long Range Update Into Mid September…

Updated 08.26.21 @ 8:48a

Is there anything more polarizing than pumpkin spice products?! Count my house in favor of rolling these items out in late August. (I think my wife bought her first autumn candle of the year a few weeks ago and, rest assured, upon our return from the beautiful Gulf Coast, it will be lit almost immediately).

Despite the fact we’re in the hottest and most humid stretch of the summer (mind you, in a summer that really hasn’t been that bad from that from a heat perspective), we’re at a point where we’re shaving off nearly 2 and a half minutes of daylight per day.

As we look at the upcoming 3-4 weeks, the primary drivers still appear to be the EPO and MJO movement. Pardon us if you’re tired of hearing this word, but it’s still the best, in our opinion, when describing the upcoming several weeks: “transient.”

Consider the more amplified look to the MJO:

As well as the EPO:

Thinking here is that the EPO and MJO will work in tandem to drive a very transient regime over the next 3-4 weeks. Perhaps the past few days have been a hint of what’s to come with more appreciable precipitation into the “heart” of central Indiana- an area that, for the most part, missed out over the latter half of July and first half of August. Officially, Indianapolis is now only 0.89″ in the hole.

Let’s take a look at some of the more trusted medium-long range computer model guidance:

JMA Weeklies

Week 1

Week 2

Weeks 3-4

CFSv2

Weeks 1-2

Weeks 3-4

European Weeklies

Week 1

Week 2

Week 3

Week 4

The largest takeaway between the drivers (MJO and EPO) and computer guidance above is that we will inject a wetter regime back into the mix over the upcoming 2-4 weeks (especially compared to the past 4 weeks). While we’ll likely cool somewhat in early September, the pattern, as a whole, looks warmer than normal over the upcoming 2 to 4 weeks, locally. The opposite can be said for the northern Rockies as early winter conditions will make their presence felt during this period. It’ll be particularly interesting to see if the JMA is correct in driving that strong western trough in the Weeks 3-4 time period. Should that come to fruition, it would likely pump unseasonably hot conditions across the East during that time frame, but, eventually, a piece of that trough may shift east late month and set up a cooler regime to end September.

Regardless, be sure to enjoy that PSL… 🙂

Permanent link to this article: https://indywx.com/2021/08/26/meteorological-fall-only-5-days-away-long-range-update-into-mid-september/

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