Category: Long Range Discussion

July 2020 Outlook: The Heat Is On…

As we head into “halftime” of meteorological summer, there’s good reason to believe the hottest stretch of weather for a big chunk of the country awaits. So far this summer, Indianapolis has only hit the 90° mark a total of (3) times. If our idea is correct, that number will go much, much higher in the month ahead.

A highly amplified pattern will take up residence for the majority of the month which is certainly unusual for this time of year. Anomalous cold will set up shop out West while heat bakes the Plains into the Ohio Valley, Great Lakes, and Northeast. Given the ingredients in place, there’s reason to believe this kind of pattern will “repeat” itself throughout a good chunk of the month. At least locally, we think this will be a rather humid heat, with timely rains throughout the month. Some of this rain will likely come from “ridge riding” storm clusters that ride the periphery of the ridge that will retrograde west from time to time during the pattern transition.

Modeling, overall, is in good agreement with the upper pattern.

Our official July Outlook is below. Officially for central Indiana, we’re forecasting temperatures to run 1° to 2° above normal with near to slightly above normal rainfall (1″ give or take either direction). Greatest concerns for drier conditions will reside through the southern and central Plains into the Great Lakes region.

Permanent link to this article: https://indywx.com/july-2020-outlook-the-heat-is-on/

VIDEO: Long Range Update Through The Remainder Of Summer And Early Hint At Fall…

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VIDEO: Replacing The Pleasant Airmass With Increased Humidity And Periods Of Heavy Rain This Weekend And Into Early Next Week…

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VIDEO: Turning Less Humid; More On Weekend Storms And The Early July Pattern…

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Early July: Transitional Heat; Active Times…

As we near the midpoint of meteorological summer (June, July, and August), we wanted to take a look at the season so far. Specifically for Indianapolis, summer 2020 thus far is running 2° above normal with rainfall (through June 21st) running below normal to the tune of 1.84″.

We’ve covered the shorter-term and increased chances of rain within that should bring the month closer to average when all is said and done, but we wanted to spend a little more time this afternoon looking ahead to the Independence Day holiday and 1st half of July, overall. As a reminder, our official July Outlook will be posted next week.

Similar to June, the first half of July is likely to promote a transitional upper air pattern. Part of this can be thanked to the EPO and recent SOI activity. In this transitional pattern, the expectation is that an upper level ridge will temporarily setup shop over the Ohio Valley and Great Lakes during the first few days of the month (Independence Day weekend included) which will support drier and hotter conditions. With such a pattern, temperatures should climb to the hottest levels of the season thus far (a couple days in the lower to middle 90s aren’t out of the question). While an isolated to widely scattered storm is possible, organized rain will be hard to come by during the medium range (July 2-6) time frame.

Thereafter, notice how the upper ridge begins to retrograde west. Ultimately, this is likely signaling the predominant upper pattern through mid and late summer (still think the most persistent heat and dryness takes up shop across the West into the Plains at times). More important to central Indiana with such a pattern is that this will likely put us in play for more organized rain and storm events as disturbances ride the periphery around the ‘mean’ upper ridge position. After a dry, hot first few days of the month, wetter and cooler times would likely ensue in the longer range (post July 6).

We’ll continue to keep close tabs on things and have our complete monthly outlook up next week. Just wanted to give you an idea this evening on some early thinking as the holiday weekend looms…

Permanent link to this article: https://indywx.com/early-july-transitional-heat-active-times/