Category: Flooding

Quiet Open To The Week Turns Busy; Focus Shifts To Late Week HVY Rain Threat…

Updated 03.18.23 @ 2:33p

The short-term pattern will be highlighted by today’s wintry conditions. Snow showers accompanied bitter cold (at least by March standards) this morning, including wind chill values that even dipped below zero in spots. Sunday will also feature unseasonable cold before a slow moderation in the temperature department eventually takes us back into the 60s by midweek.

Speaking of midweek, that’s when unsettled weather will return. We don’t anticipate particularly heavy rain, but rain chances will be on the increase Wednesday. Early numbers suggest we’re looking at 0.25” to 0.50” type of an event but this appears to set the stage for a more significant rain storm as we get set to close the week. As is typically the case 5-6 days out, forecast models differ on the specifics but the overall pattern favors a heavy rain and local flood threat unfolding across the Ohio Valley. Specifics regarding whether or not this is a central or more of a southern OHV threat will be dealt with in the days ahead.

As it is, the GFS and European are in great agreement from this distance on the heavy rain and flood threat, including the opportunity of 3”+ of rain through at least a portion of the forecast area (most of which falls Friday). Specifics around more details with locations/ rainfall numbers will be fine tuned in the days ahead.

Permanent link to this article: https://indywx.com/2023/03/18/quiet-open-to-the-week-turns-busy-focus-shifts-to-late-week-hvy-rain-threat/

VIDEO: Multi-Faceted Significant Storm To Close The Work Week; Colder Shift Takes Place Next Week And Sets The Stage For More “Fun And Games…”

Updated 03.03.23 @ 7:40a

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Permanent link to this article: https://indywx.com/2023/03/03/video-multi-faceted-significant-storm-to-close-the-work-week-colder-shift-takes-place-next-week-and-sets-the-stage-for-more-fun-and-games/

Client Brief: Thursday Evening Update…

Updated 03.02.23 @ 11:03p

Type: Flooding and Severe Weather; North-Central IN Wet Snow

What: Heavy rain and severe weather; north-central Indiana heavy wet snow

When: Friday, 3/3/23

Wind: Variable 20-30 MPH with gusts to 50 MPH

Summary: A deepening area of low pressure will track into the central Ohio Valley as we close the work week. This will lead to an expanding area of heavy precipitation through the overnight and into Friday morning. Precipitation will fall in the form of heavy rain across central portions of the region, including the Indianapolis area, along with a flood threat. Further north, heavy wet snow will develop across northern IN, into the greater CHI area and into central MI. Note: Early 00z guidance is shifting this area of low pressure further southeast which puts more of north-central parts of the state in play for wet snow accumulation Friday afternoon. We’ll continue to monitor overnight trends but the possibility is there that the rain-snow line will have to shift south compared to what most of the data has been showing the past couple of days. Widespread rainfall amounts of 2”+ can be expected into central IN along with non-thunderstorm gusts of 50+ MPH.

We bracket the 1p to 4p window for the threat of severe storms. This risk lies from Indianapolis proper and points south. We anticipate a line of storms to “bow” out, leading to an elevated damaging wind threat across southern IN during this time period but we also note the potential of a couple of quick spin-up tornadoes within this line of storms, as well. It’ll be important to have a means of getting any and all warnings Friday. Keep tuned to local media or have a way to receive the latest National Weather Service updates. All of the “action,” including the heavy rain threat is expected to wind down Friday evening, including much calmer and quieter conditions returning Friday night.

We’ll be back with a fresh video discussion no later than 7:30a Friday.

Permanent link to this article: https://indywx.com/2023/03/02/client-brief-thursday-evening-update/

Reviewing Rainfall Amounts. Cooler And Less Humid Through The Remainder Of The Work Week; Heat Returns Over The Holiday Weekend…

Updated 08.30.22 @ 7:40a

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Permanent link to this article: https://indywx.com/2022/08/30/reviewing-rainfall-amounts-cooler-and-less-humid-through-the-remainder-of-the-work-week-heat-returns-over-the-holiday-weekend/

VIDEO: Significant Flood Concerns Across The Southern Half Of The State Over The Next 48 Hours; Gorgeous Weekend Weather On Tap…

Updated 07.26.22 @ 7:20a

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VIDEO: Heavy Rain; Localized Flooding Expected Overnight And Into Tuesday. Gorgeous Weekend Weather On Deck…

Updated 07.25.22 @ 7:30a

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VIDEO: Time To Dry Out; Heat Builds Through The 2nd Half Of The Week…

Updated 07.18.22 @ 7:24a

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VIDEO: Wet Sunday Gives Way To A Dry And Progressively Hotter Rest Of The Week…

Updated 07.17.22 @ 9:15a

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Central Indiana Poised To Finally Cash In On Heavy Rains…

Updated 07.08.22 @ 7:30a

0.14″. That’s it in the rainfall department, officially recorded at IND, for the month so far. While several neighborhoods have seen much more rainfall than that, it reiterates just how dry it’s been here for most immediate central Indiana communities. In fact, we have to go all the way back to June 12th to find the last 24 hour period where IND recorded anything close to even half an inch of rain (0.49″).

With all of that said, a combination of ingredients should come together to finally allow a widespread chunk of central Indiana to accumulate hefty rain totals as we get set to close out the work week.

I. We have added forcing from a cold front and wave of low pressure that will move along the boundary as it sags south this evening. This will aid in helping more widespread coverage of rain and thunderstorms fire, especially as we progress into the afternoon and evening.

II. A truly tropical airmass engulfs the region this morning and this will remain in place until the cold front clears the area late tonight. Precipitable water values in excess of 2″ combined with dew points in the lower to middle 70s will allow rain and storms to feed off the juicy air this afternoon and evening. Rainfall rates of 2″+ per hour will be common in the heavier cells. Should storms train over the same areas, flash flooding will likely develop.

III. As the wave of low pressure moves across the state this afternoon and evening, it could help enhance the threat of severe weather, especially along and south of the I-70 corridor. A quick spin-up tornado isn’t out of the realm of possibility but the bigger severe threats appear to be from wet microbursts (damaging wind/ hail).

We anticipate many central Indiana neighborhoods to accumulate at least an inch of rain today with some communities seeing locally heavier totals. Again, where heavier cells train, localized flash flooding will develop.

Eventually the front will settle south and clear the state tonight. This will allow drier and MUCH less humid to return to the region just in time for the weekend. We expect plentiful sunshine, low humidity, and cooler temperatures to dominate through the day Monday.

Permanent link to this article: https://indywx.com/2022/07/08/central-indiana-poised-to-finally-cash-in-on-heavy-rains/

VIDEO: Spring Fling Early Next Week, But A Lot Of Winter Is Left In The Tank…

Updated 02.17.22 @ 7:35a

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