Category: Tornadoes

Cristobal Makes Landfall; Takes Aim On Midwest. Discussing Central Indiana Impacts…

Tropical Storm Cristobal made landfall along the southeast LA coastline just after 6p eastern time as a 50 MPH storm. The upcoming 48-72 hours will feature Cristobal moving north and impacting the MS Valley, Midwest, and Great Lakes region. This evening we wanted to spend a bit more time focusing on the impacts of Cristobal’s remnants across central Indiana.

Monday- Dry conditions will persist along with plentiful sunshine and warm temperatures. We anticipate highs will top out in the middle to upper 80s with a partly cloudy sky that will likely feature increased mid-high level cloudiness across southwestern IN late day. This is in association with the expanding high level cloud canopy associated with Cristobal. An easterly flow will maintain low dew points and a very refreshing airmass to open the week (stark contrast compared to what awaits Tuesday).

Tuesday- Cristobal’s remnant circulation will continue to track north up the MS River Valley. Indiana will begin to experience some of the outer bands by the afternoon and evening hours. While the remnant circulation will remain well to our west (along with the more concentrated, heavy rain), these outer rain bands will be capable of producing torrential rain and could also produce a couple of quick, spin-up tornadoes (not uncommon with landfalling tropical systems). It’ll be important to remain weather-aware across the entire state Tuesday (more specifically during the afternoon and early evening across central Indiana). Tuesday will, by far, be the hottest day over the upcoming (10) days, including highs flirting with 90º and dews in the lower to middle 70s. Can you say “tropical?!”

While Cristobal’s remnant circulation will remain well west of Indiana, we’ll take a “glancing blow” Tuesday into Wednesday with better rain chances and a very humid regime.

Wednesday- The day will start very humid as the rich, tropical moisture continues to take up residence across the western Ohio Valley, but changes loom. We can expect a “smattering” of showers and thunderstorms ahead of the 1st of 2 frontal boundaries that will sweep through the region during the 2nd half of the week. MUCH LESS HUMID air will sweep into the area Wednesday evening. This will be a precursor to a much less humid and cooler weekend ahead.

How Much Rain Are We Talking? As you can see, the bulk of the heavy rain will remain well to our west and closer to the immediate remnant circulation of Cristobal. We expect rainfall amounts between 0.25″ and 0.50″ in the outer rain bands across central Indiana Tuesday into Wednesday.

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VIDEO: Discussing The Severe/ Localized Flooding Threat Tonight And Looking Ahead To The Holiday Weekend…

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Risk Of Rotating Storms This Evening-Tonight…

Quick short-term update this morning to discuss the potential of severe weather later this evening and into the nighttime hours. (We’ll have a more in-depth video update posted this evening, including longer range thoughts).

This morning has featured a few rain showers scattered about central Indiana, but the heavier, more organized, rain from the overnight is long gone (for now). While showers will impact central Indiana at times into the early afternoon hours, it’s not until late evening and the nighttime hours that we anticipate more organized shower and thunderstorm activity. Given the ingredients in place, there’s the potential of a few rotating storms tonight and subsequent risk of tornadoes. Sunshine, or not, it’ll be important to remain weather-aware tonight and have a means of getting the latest warnings that may be issued. Should we see a period of sunshine later this afternoon, the threat of severe weather will be elevated tonight.

The Storm Prediction Center (SPC) includes central and western portions of the state in a Slight Risk of severe weather in their most recent Day 1 Outlook.

The window of severe weather potential appears to come after 8p for central Indiana, continuing into the overnight hours.

Locally heavy rain will shift from western Indiana (tonight) into the eastern half of the state (Monday). Widespread 1″ to 2″ of additional rain is likely.

As the upper low “cuts off” early-mid week, shower chances will continue along with cooler temperatures.

Make it a great Sunday! Chat with y’all a bit later today!

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Late Season Wet Snow Storm For Northern Portions Of The Ohio Valley; Fresh Long Range Thoughts Into May…

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Couple Wintry Events For Portions Of The Ohio Valley This Week; MJO Differences In The Long Range…

Easter Sunday was a tough day across the Southeastern portion of the country, including a total of 465 severe reports. 53 of those were tornadoes, and the storm system continues to ravage the eastern seaboard this morning. Our thoughts and prayers are with our friends and family across the Southeast as they begin to clean up.

Much colder air has now filtered into the region on the backside of this storm system. We’ve already seen our high for the day (occurred at midnight) and temperatures will remain stuck in the 40s the remainder of the daytime before falling into the 30s this evening.

The big story today will be the wind. Northwest gusts of 40-50 MPH can be expected into the early to middle part of the afternoon before diminishing.

Clouds and wind will diminish tonight and set the stage for a cold night, including areas of frost throughout central Indiana. Most should fall to around 30° but there will be a few reports of upper 20s.

While a couple of instability-driven showers are possible Tuesday afternoon and evening, most of the day should be free of any precipitation. Unfortunately the same can’t be said for Wednesday. An upper level disturbance will track through the central Ohio Valley and this will be responsible for spreading a mixture of rain and snow showers through central Indiana Wednesday morning into the afternoon hours. We’re not expecting much if any snowfall accumulation with this system and precipitation totals, overall, should be light, but it’s certainly not what those ready for spring are wanting in mid-April.

If that wasn’t enough, another (stronger) system is dialed up late Thursday into Friday. It’s this wave of low pressure, combined with the unseasonably cold air mass entrenched across the region, that may lead to wet snowfall accumulation across portions of the region. As of now, we think northern Indiana into northern Ohio stand the chance of picking up some wet snow accumulation and this system will require our attention over the next couple of days.

Thankfully, fleeting high pressure will build overhead to produce a return of the sun and drier conditions by Saturday before our next cold front approaches with showers for Sunday.

In the longer range, the MJO is deserving of our continued focus. Over the weekend, we noted the differences in handling the MJO amplitude between the American and European models, in particular. The European slows things down and keeps us in Phase 2 late-April which would have colder/ drier implications on the late month forecast. Meanwhile, the American models continue to move things into Phase 3 (wetter/ milder). We’ll keep close tabs on this and include another update with our Long Range discussion Thursday.

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