Category: Forecast Discussion

Weekly #AGwx And Severe Weather Outlook…

Updated 08.28.21 @ 6a

A persistent trough will remain in place across the northern Rockies while weak ridging takes up shop across the Great Lakes region.
Warmest anomalies through the forecast period can be expected across the Mid-Atlantic and central Plains, into the Southwest. The northern Rockies will remain cooler than normal. The cooler than normal conditions across the central Gulf Coast region is associated with the daytime highs being lower as Ida moves north early in the period.
The biggest focus through the middle of the week will have to do with the remnant moisture associated with Ida. Active times will return to the upper Midwest as well.
We forecast 7-day rainfall amounts to check-in between 1″ and 1.5″ for most of central Indiana.

Forecast Period: 08.28.21 through 09.04.21

The period will open with an active weather pattern. A cold front will slowly press south through early week. At the same time, Hurricane Ida is forecast to make landfall along the north-central Gulf Coast (likely along the LA coastline) Sunday afternoon, and as a major hurricane at that. The remnant moisture of Ida will lift north before curling east. Eventually, we believe the remnant moisture of Ida will get tangled up with the aforementioned cold front. While we’ll need to keep a close eye on data to see if any adjustments are needed early week, as of now, we believe the heavy rain threat will lie just south of our immediate area (more so along and south of the OH River). We’ll keep a close eye on things. Regardless, scattered to numerous showers and thunderstorms are expected as the cold front sinks south. By midweek, the region will be in a much drier (and somewhat cooler) northeasterly airflow. Dry conditions are expected to continue into the holiday weekend ahead with slowly moderating temperatures.

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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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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… 🙂

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VIDEO: Heat And Humidity Lead To Dangerous Conditions To Be Outdoors; Watching the Gulf of Mexico Early Next Week And Prospects Of A Cooler Open To September…

Updated 08.25.21 @ 8:45a

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VIDEO: Eyeing A Potential Pattern Change As We Get Into September…

Updated 08.24.21 @ 10:20a

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