Category: Forecast Models

Well-Advertised Major Changes Waiting On Deck…

Thursday will begin the major shift from relatively mild and stable weather that we’ve enjoyed for the past week and a half to one that’s drastically different, and much more resemblant of November by Saturday.

First rain drops will likely splatter on wind shields as early as the morning commute across central Indiana.

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We’ll then see a “lull” in the action through the majority of the day before more widespread showers and embedded strong to severe thunderstorms rumble in Thursday night into Friday morning.  Here’s a look at forecast radar Friday morning.

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The Storm Prediction Center does highlight western sections of the state for a Slight Risk of severe weather Thursday.  We’ll continue to monitor things closely.  Localized damaging straight line wind is the primary severe threat in the highlighted risk area.

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We also want to highlight Friday afternoon and evening for another round of showers and embedded thunder.

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Rainfall totals should reach between 1″-2″ with locally heavier amounts between the period of Thursday morning and Saturday morning.

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The rain and gusty storms will fall ahead of a strong autumn cold front that will send temperatures on a rapid downward trend come Friday night.  A deep trough will carve itself out over the eastern region Saturday and ultimately have temperatures all the way to the Gulf Coast feeling November-ish by Saturday (perfect football weather, IMO).

By the way, the record low max will be in jeopardy Saturday (49 degrees, courtesy of Sean Ash) as many central Indiana communities may struggle to make it out of the 40s for highs with considerable cloudiness, pesky drizzle, and gusty winds.  Have the jackets and sweaters ready, friends!

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Permanent link to this article: https://indywx.com/2014/10/01/well-advertised-major-changes-waiting-on-deck/

Weekly Outlook: Pleasant, But Big Changes Hit Late Week…

– What a beauty of a Sunday evening underway! Temperatures across the Ohio Valley and Mid West are running 15°-20° above where we’d expect them. The recent dry, warm stretch…

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Permanent link to this article: https://indywx.com/2014/09/28/weekly-outlook-pleasant-but-big-changes-hit-late-week/

Focusing On The Warmth…

The extended stretch of dry weather will continue well into next week. In addition to the dry weather, temperatures will also moderate from the unseasonably cool conditions for the majority…

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Permanent link to this article: https://indywx.com/2014/09/25/focusing-on-the-warmth/

More On The “Typhoon Rule”

Perhaps you’ve heard folks discuss the “typhoon rule” over the past few weeks. What I despise is when people take credit for certain ideas without giving credit where credit is…

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Permanent link to this article: https://indywx.com/2014/09/22/more-on-the-typhoon-rule/

Weekly Outlook: Cool Start, Mild Finish

A secondary cold front is moving into central Indiana this afternoon with clouds, gusty northerly breezes, and fresh cool air. Speaking of cool, September, so far, has been cooler and…

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Permanent link to this article: https://indywx.com/2014/09/21/weekly-outlook-cool-start-mild-finish/

Catching Up On A Tuesday Evening…

Several interesting weather items are on the docket and each will have to be dealt with as they come over the course of the upcoming 7 days.  Some of the headlines include a brief warm-up Saturday, weekend rain that could include a tropical connection Sunday, and another big shot of October-like chill next week.

While we have a few more days of below normal temperatures in front of us, we eye at least one day where temperatures will manage to climb above normal and that’s Saturday.  All indications still suggest we’ll be very close, if not a degree or two higher, than the 80 degree mark along with a nice southwest air flow in place Saturday.  All-in-all, it’ll be a great day to take care of any early-autumn yard work that’s needing to get done.

Changes brew Sunday as a cold front draws near.  This is where questions lie and they actually have to do with Tropical Storm Odile (currently all the way to our southwest over the central Baja California peninsula region).  Odilemoisture

While the GFS and European forecast models still aren’t interested in “welcoming” Odile’s moisture into the region, we note the Canadian model does suggest some tropical moisture, courtesy of Odile, gets entangled along the front Sunday.  We’ll continue to keep a close eye on things and monitor the forecast data accordingly moving forward through the back half of the work week.

 

The other item of interest has to do with yet another big blast of autumn air that will have things feeling very much like October around these parts come early next week.  The above average temperatures Saturday will hang around just for the day as yet another unseasonably chilly air mass moves into the area Monday into Tuesday of next week as a significant trough develops over the east with an impressive western ridge in place.  f156

 

Note the GEFS and Canadian show the return of the unseasonable chill next week.  Keep those jackets handy.  Early indications would suggest this type air mass is plenty capable of highs in the upper 50s/ lower 60s and overnight lows in the upper 30s/ lower 40s during the height of the chill (most likely Tuesday).  Stay tuned…

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Permanent link to this article: https://indywx.com/2014/09/16/catching-up-on-a-tuesday-evening/

Weekly Outlook: Cool And Overall Dry

We’re going to begin writing an overview on the weekends (Saturday or Sunday depending on what time allows) of the upcoming week ahead. This won’t serve as a substitute for…

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Permanent link to this article: https://indywx.com/2014/09/13/weekly-outlook-cool-and-overall-dry/

Nice Now, But Stormier Times Loom…

What a beautiful Sunday underway across central Indiana. We made the suggestion earlier today to get outside and watch the opening Sunday of NFL if at all possible (btw, we…

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Permanent link to this article: https://indywx.com/2014/09/07/nice-now-but-stormier-times-loom/

1-2 Punch Of Cool Coming…

September so far has been dominated by a southeast ridge, presenting a warmer and more humid than average feel to our air- stark contrast from the better part of the…

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Permanent link to this article: https://indywx.com/2014/09/04/1-2-punch-of-cool-coming/

Wet Pattern Looks To Continue Into Mid Month…

I was out and about earlier today and taking note that local lawns are much greener than they typically have been over the past few years by early September.  We can thank recent rains and warmth, but it’s been a wet year, overall, to date.  Think back to all of the winter snows and then add the copious spring and summer rains.  The end result so far?  2014 is running close to 2″ above normal precipitation at IND.

Overnight rains went close to forecast.  We picked up 1″ on the dot in the city, including northern ‘burbs.  (IndyWx.com HQ in southern Boone County also picked up 1″).  Heavier rains and localized flash flooding took place down state.

A look at today’s rainfall:

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Moving forward, the pattern over the upcoming (2) weeks appears wetter than normal.

In the shorter term, the GFS and Canadian paint a wet picture out by Days 7-10 (BTW- the European agrees).

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Modeling suggests 2-3″ type rainfall is possible over the upcoming 7-10 day period.  A transient pattern can be thanked for the overall wet forecast.

The CFSv2 also suggests precipitation runs 150%-200% of normal levels through mid September.

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As harvest begins across some Hoosier farm lands, note the increased wetness in the pattern through the upcoming 14 days, or so.

The region will remain in an active pattern through the next couple weeks, at least, as we lie in the battle ground between a stubborn southeastern ridge and an increasingly active early fall northern stream.  A wetter than normal mid west will ensue…

Permanent link to this article: https://indywx.com/2014/09/02/wet-pattern-looks-to-continue-into-mid-month/

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