Category: Heavy Rain

Tuesday Morning Rambles: Potential Tropical Impacts Down The Road And Renewed Heatwave Claim Headlines…

I. Another quiet, pleasant mid-summer day is on tap thanks to high pressure. Though very warm, humidity will remain low today. We should add another 90 degree day to the books later this afternoon.

II. A cold front will move into the Ohio Valley Wednesday and we expect a couple of lines of thunderstorms to move across central Indiana during the day. The first line will likely be in a weakening state as it approaches central Indiana around lunchtime tomorrow, however, we expect a second line of showers and t-storms to move through the heart of the state tomorrow evening.

The Storm Prediction Center includes northwest IN in a ‘Slight’ risk of severe weather Wednesday.

III. While dry conditions (and cooler temperatures) will return here for late week and into the first half of the weekend, all eyes by this time will be centered on soon-to-be Barry. Conditions still seem favorable (sea surface temperatures and upper level wind environment) for a disturbance currently over SW GA to strengthen into a named tropical system over the northern Gulf over the next 24-48 hours.

While confidence remains low concerning potential inland impacts from the eventual remnants of Barry (always the case with tropical systems), there seems to be an opportunity for two paths as of now.

“Path A” would essentially be a scenario where Barry gets trapped under an upper level ridge to the north, resulting in raining himself out over Texas next week. “Path B” would curl Barry north and northeast into the OHV, spreading a swath of heavy tropical rains well inland. Stay tuned.

IV. The other headliner will be a return of significant heat next week. While Barry may (or may not) have a say in cooling us down late next week, there will be a renewed stretch of 90 degree warmth that develops Sunday into at least the middle of next week. Longer range data continues to trend hotter and we’ll have a look at the updated European Weeklies later today or Wednesday.

Permanent link to this article: https://indywx.com/2019/07/09/tuesday-morning-rambles-potential-tropical-impacts-down-the-road-and-renewed-heatwave-claim-headlines/

VIDEO: Window Opens For More Traditional Summer Weather…

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Permanent link to this article: https://indywx.com/2019/06/22/video-window-opens-for-more-traditional-summer-weather/

VIDEO: Timing Out Storm Impacts This Weekend; More July Chatter…

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Permanent link to this article: https://indywx.com/2019/06/21/video-timing-out-storm-impacts-this-weekend-more-july-chatter/

Concerned For Significant Flooding Tonight Into Thursday…

The day is opening dry across central Indiana (and sunny for some), but another heavy rain event looms by the end of the day. The culprit? A stalled front remains draped across central Indiana and a surface wave will move along this boundary this afternoon into tonight. A “juicy” airmass will remain intact across the region with precipitable water values topping out at 2.5″ across the southern half of the state. This will promote any shower or thunderstorm that develops to drop very heavy rainfall in a short period of time (1″ to 2″ per hour at times).

As the surface wave interacts with the tropical air mass in place, widespread showers and thunderstorms will blossom across the region through the afternoon into tonight. Rain will continue into Thursday afternoon.

We’re still also concerned for severe weather this afternoon and evening, including a couple of tornadoes across the southern half of the state.

By the time the rain comes to an end Thursday evening, widespread 2″ to 4″ can be expected across the heart of the state, including Indianapolis, itself.

If that’s not enough, heavy rain and thunderstorms will return late Friday and continue in an “off and on” fashion straight through the weekend.

Unfortunately, some central Indiana rain gauges can expect to pick up an additional 5″+ of rain between this afternoon and next Tuesday…

Another unsettled weekend is on tap.

Permanent link to this article: https://indywx.com/2019/06/19/concerned-for-significant-flooding-tonight-into-thursday/

VIDEO: Latest Thoughts On Tomorrow’s Severe Potential And Looking Ahead Through The 1st Half Of July…

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Permanent link to this article: https://indywx.com/2019/06/18/video-latest-thoughts-on-tomorrows-severe-potential-and-looking-ahead-through-the-1st-half-of-july/

VIDEO: Severe Threat Continues To Increase Wednesday PM…

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Permanent link to this article: https://indywx.com/2019/06/18/video-severe-threat-continues-to-increase-wednesday-pm/

Only Going To Get Worse Before It Gets Better…

The pattern into the medium range period continues to look like a broken record: excessively wet. Unfortunately, flood and flash flood warnings will continue to likely be issued over the next 7-10 days on an almost daily basis for at least portions of the immediate viewing area.

Current Flash Flood Guidance can be found below:

In most cases across central and southern Indiana, we’re only talking about rainfall of 1″ to 1.5″ in an hour’s timeframe that will cause flash flooding. 3 hour guidance is in the 1.5″ to 2″ range.

Tuesday will feature less overall aerial coverage of showers and thunderstorms (widely scattered) as compared to the past few days. However, we’re tracking (2) surface waves that will result in more widespread heavy rain and thunderstorms Wednesday afternoon into Thursday and again over the weekend into early next week with a moisture-rich, tropical southwesterly air flow in place.

After less rainfall coverage Tuesday, heavy rain and storms will return Wednesday PM into Thursday.
A wave of low pressure and vigorous upper level energy will lead to a threat of severe weather Wednesday afternoon and evening.

As mentioned above, severe weather is possible Wednesday afternoon and evening as vigorous upper level energy accompanies the surface wave scooting across the lower OHV. This will warrant our attention over the upcoming 48 hours and will likely lead to the Storm Prediction Center expanding the current Slight Risk further northwest with future updates.

Fingers are still crossed for briefly drier conditions Friday before we reload the moisture with a persistent southwesterly air flow this weekend. This will promote additional concerns for heavy rainfall over the weekend.

At times, this moist southwest flow will help precipitable water values exceed 2″. Needless to say, concern will remain very high for additional flooding problems over the weekend into early next week.

Widespread additional rainfall of 2.5″ to 3.5″ is a good bet with locally heavier amounts over the upcoming week.

More on the long range pattern into the Weeks 3/4 period tomorrow!

Permanent link to this article: https://indywx.com/2019/06/17/only-going-to-get-worse-before-it-gets-better/

VIDEO: A New Week; Same Ole Weather Pattern. Discussing The Pattern Evolution Into July…

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Permanent link to this article: https://indywx.com/2019/06/17/video-a-new-week-same-ole-weather-pattern-discussing-the-pattern-evolution-into-july/

VIDEO: A Very Wet Week Is On Deck; Early July Thoughts…

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Permanent link to this article: https://indywx.com/2019/06/16/video-a-very-wet-week-is-on-deck-early-july-thoughts/

VIDEO: Classic Pattern For A Significant Flood Event…

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Permanent link to this article: https://indywx.com/2019/06/15/video-classic-pattern-for-a-significant-flood-event/

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