Category: Summer

Prolonged Hot, Muggy Stretch…

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Permanent link to this article: https://indywx.com/2018/08/31/prolonged-hot-muggy-stretch/

September Opens Warm Before Mid-Month Changes…

Thursday features updated weekly products from both the JMA (morning) and European (evening).  We’ll update this post tonight once the European Weeklies are in.

The updated JMA Weeklies show a hot open to September as a significant upper ridge takes up residence over the eastern portion of the country.  While the upper Mid West gets in on heavy rain, it’s a rather dry pattern, locally.  Sure we’ll have typical “splash and dash” variety of storms through the Labor Day weekend, but nothing worth cancelling any of your outdoor plans.  In fact, we recommend incorporating a visit (or two) to the pool over the weekend as well above average warmth and humidity dominate.

Week 1

“Transitional period” summarizes this timeframe.  The upper ridge begins to retrograde during Week 2, but it’s still a warmer than average pattern.  It’s a rather dry pattern, as well.

Week 2

Craving a more “fall-ish” regime?  The model says you’re in luck towards the middle of September and would make sense with some of the larger pattern drivers we’re beginning to see behind the scenes.  The ridge axis shifts west and allows a cooler than normal pattern to descend into the central part of the country.

Weeks 3-4

Permanent link to this article: https://indywx.com/2018/08/30/september-opens-warm-before-mid-month-changes/

VIDEO: Midweek FROPA; Looking Ahead To Labor Day Weekend…

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Permanent link to this article: https://indywx.com/2018/08/27/video-midweek-fropa-looking-ahead-to-labor-day-weekend/

Extended Summer…

Meteorological fall begins Saturday, but Mother Nature has other plans in store as we move through the next 2-3 weeks.  If you’re a fan of summer, you’ll like what’s in store, as a dominant eastern ridge grabs the headlines.  Sure, the “axis” of the ridge will retrograde Week 2, but the pattern will likely remain significantly warmer than average through the first couple weeks of September, overall.

Both the GEFS (courtesy of Tropicaltidbits.com) and EPS (courtesy of weathermodels.com) show the overall warm pattern as we approach mid-September.

Averages begin to fall in more significant fashion as we transition through the month of September. More specifically, average high temperatures of 83° on the 1st fall to 78° on the 15th.  Given the looks of the pattern, highs in the mid to upper 80s (and perhaps a couple of 90° days) will likely be common through the first couple weeks of the new month.  Overnight lows will remain oppressive, as well.

If you’re longing for cooler, more fall-like, air, hang in there. Pattern drivers are likely to become more conducive for increasingly refreshing times around these parts as mid-September approaches.

PS: Can you believe we’re only (5) days away from the return of college football?!  That alone will help us traverse the next couple weeks of warmer times.

Permanent link to this article: https://indywx.com/2018/08/26/extended-summer/

VIDEO: Stormy Open To Our Saturday; Looking Ahead Towards Labor Day…

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Permanent link to this article: https://indywx.com/2018/08/25/video-stormy-open-to-our-saturday-looking-ahead-towards-labor-day/

VIDEO: Best Rain Chances Along & West Of I-65 Later Today; Humidity Returns…

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Permanent link to this article: https://indywx.com/2018/08/24/video-best-rain-chances-along-humidity-returns/

Cool Now, But Summer Returns- Along With Storms…

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Permanent link to this article: https://indywx.com/2018/08/23/cool-now-but-summer-returns-along-with-storms/

VIDEO: Taste Of Fall Is Replaced With Resurgent Summer Heat…

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VIDEO: Hint Of Fall Blows Into Town Tonight…

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Heavy Storms For Some Tonight And Looking Ahead…

A warm front is draped across the state this evening.  At the same time, surface low pressure is spinning across north-central MO with a trailing cold front entering IL.  This evening, a warm and moist airmass continues to advect into central Indiana.

As we type this update, widely scattered thunderstorms are impacting areas from Lafayette to the northeast side of Indianapolis.  A more organized complex of thunderstorms is firing to our southwest- from south-central IL to southeastern MO and into AR.  This is ahead of the cold front.

Looking at forecast radar products, the majority of data brings a couple rounds of showers and thunderstorms through central parts of the state around 9p to 10p, continuing into the overnight and predawn hours.

9p forecast radar

11p forecast radar

2a forecast radar

5a forecast radar

With high precipitable water values in place (approaching 2″ through tonight), locally heavy rain is likely with thunderstorms through the night.  We expect widespread additional rainfall tonight of 0.50″ to 1″ with locally heavier amounts.  A few embedded strong to severe storms are also possible tonight with the primary concern being damaging straight line winds and large hail, but an isolated quick spin-up tornado can’t be ruled out.  We suggest ensuring your weather radio is set with the ‘alert mode’ on tonight.

As we flip the page, a few scattered showers will remain in our forecast Tuesday PM before a much cooler and drier air mass invades Tuesday evening- continuing into Friday morning.  Several central Indiana neighborhoods will dip into the 40s Thursday and Friday mornings.

2a forecast temperatures Thursday.

Enjoy the cooler air while you’ve got it, as a developing heat wave will engulf much of the region as we close the month and open September.  Needless to say, despite the unofficial end to summer just around the corner, there’s still plenty of summer left in the tank.  This is the type pattern that can produce an extended stretch of lows around 70° and highs around 90°.

Permanent link to this article: https://indywx.com/2018/08/20/heavy-storms-for-some-tonight-and-looking-ahead/

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