Category: Severe Weather

Apr 13

Weekly #AGwx And #Severe Weather Outlook…

Updated 04.13.24 @ 12p

While unseasonably warm air will build in here early next week, don’t put away the cold weather gear just yet. We’re likely even looking at additional frost threats as we get towards late next weekend and/ or early Week 2. More details below in this week’s #AGwx and #Severe Weather Outlook.

“Transitional” is the word to describe the upcoming couple weeks worth of weather around these parts. The warmth to open the period will cool significantly next weekend and early Week 2, only to give way to renewed warming late April.

Note the roller coaster in the temperature anomalies over the next couple of weeks.

The active pattern in the week ahead will dry significantly late in the forecast period as the cooler airmass takes hold.

In the more immediate term, we’re tracking 2 storm systems in the week ahead: Tuesday – Wednesday and again Thursday night into Friday.

The Storm Prediction Center includes western Indiana in a risk of severe weather Tuesday. We’ll monitor for the potential of a further east extension of this risk area.

We think (2) rounds of storms are on deck Tuesday. The first round likely is associated with a warm front lifting north through the state Tuesday morning (hail threat) followed by a second round of activity Tuesday night into Wednesday morning (main concern being damaging straight line winds with this round). As of now, storm total rainfall amounts of 0.50″ to 1″ seem likely during this timeframe.

Another round of showers and embedded thunder will precede a blast of chilly air next weekend. We bracket Thursday night into Friday morning for this particular round of rain. An additional half inch, or so, of rain seems reasonable from this distance.

By the time we get to next weekend and early Week 2, drier and much cooler, more stable air should take up residence.

We note the warm open, chilly finish in the 10-day meteogram. Also note the frost threat at the end of this period.

Upcoming *10-Day Rainfall Projection: 1″ to 1.5″

Permanent link to this article: https://indywx.com/2024/04/13/weekly-agwx-and-severe-weather-outlook-51/

Apr 12

VIDEO: Mother Nature Is Making Us Earn It Saturday; Long Range Pattern Remains Active/ Stormy…

Updated 04.12.24 @ 7:48a Today will certainly be another less than ideal weather day across central Indiana, but the trade off for what awaits Saturday will be worth it. You’ve…

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Permanent link to this article: https://indywx.com/2024/04/12/video-mother-nature-is-making-us-earn-it-saturday-long-range-pattern-remains-active-stormy/

Apr 10

VIDEO: Heavy Rain Develops Later Today Into Thursday; Keeping An Eye On The Potential Of Strong Storms Early Next Week…

Updated 04.10.24 @ 7:40a We’re only dealing with a few light showers out the door this morning, but a heavier and more widespread area of rain will develop through the…

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Permanent link to this article: https://indywx.com/2024/04/10/video-heavy-rain-develops-later-today-into-thursday-keeping-an-eye-on-the-potential-of-strong-storms-early-next-week/

Apr 06

VIDEO: Saturday Stunner Gives Way To Sunday Storms; “Perfect Timing” Monday Ahead Of More Heavy Rain…

Updated 04.06.24 @ 11:06a We couldn’t ask for better weather today (after that cold start). You earned it, friends! Clouds quickly return Sunday and give way to late afternoon and…

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Permanent link to this article: https://indywx.com/2024/04/06/video-saturday-stunner-gives-way-to-sunday-storms-perfect-timing-monday-ahead-of-more-heavy-rain/

Apr 02

Bumpy Ride This Afternoon…

Updated 04.02.24 @ 6:44a

It’ll be important to remain weather-aware this afternoon as a final round of severe storms move through the state. Morning rain will come to an end soon and then we’ll see a “lull” in the action late morning. Upstream satellite images are concerning as it appears we’ll break into sunshine for a while late morning into early afternoon. This will quickly get to work on the atmosphere and aid in a turbulent time of things through the early and mid afternoon. In fact, as the Storm Prediction Center gets a look at the setup post-sunrise, it wouldn’t surprise us if each of the respective risk areas gets pulled back further west.

Regardless, storms will redevelop just after lunchtime across western Indiana and intensify on their journey east through the afternoon. By evening, most if not all of the activity will be out of the state.

All modes of severe weather will be possible area-wide today. We’re particularly worried about an elevated tornado outbreak across the Ohio Valley, especially if clearing takes hold for a while late morning. Take warnings seriously if and when they are issued, friends.

Forecast radar 1p
Forecast radar 3p

Strong westerly winds will take hold by evening, quickly pushing a colder and more stable airmass into town, thankfully.

Permanent link to this article: https://indywx.com/2024/04/02/bumpy-ride-this-afternoon/

Mar 31

Weekly #AGwx And #Severe Weather Outlook…

Updated 03.31.24 @ 7:26a

The upcoming immediate term will be headlined by a multi day heavy rain and severe weather episode. A stalled frontal boundary will serve as the pathway for multiple waves of low pressure to ride along through Tuesday. In addition to a heavy rain and flooding threat (primarily targeting immediate central and north-central Indiana), we’ll also likely have to deal with (3) rounds of severe storms. We’ll allow our short-term products to handle those severe threats, but just know all modes of severe are on the table with the greatest emphasis being on large hail with this setup. Should a couple discrete cells develop near or just south of the boundary then an elevated tornado threat would ensue. Again, we’ll have a fresh post hoisted later this afternoon or evening on that.

Overall, there’s no change in the idea of an active pattern continuing from Week 1 (image 1 below) into Week 2 (image 2 below).

The cooler pattern behind our early week storm system will reverse in significant fashion Week 2. – Transitional regime at its finest.

Week 1 temperature anomalies

Week 2 temperature anomalies

The busy nature of the pattern is reflected in the upcoming 2 week precipitation anomalies.

Severe weather will be possible at least across a portion of our immediate viewing area starting this evening and continuing daily through Tuesday.

Colder air will crash in here Wednesday and as an upper low swirls overhead, wet snow will develop. Snow may even fall heavily enough to accumulate on grassy surfaces in spots Wednesday night into Thursday morning.

*Upcoming 10-Day Rainfall Projection: 3” to 4”+

Permanent link to this article: https://indywx.com/2024/03/31/weekly-agwx-and-severe-weather-outlook-49/

Mar 30

Saturday Evening Thoughts On The Pending Heavy Rain/ Severe Event…

Updated 03.30.24 @ 5:07p

There’s not much, if anything, to change regarding the setup and anticipated outcome of the Easter Sunday through Tuesday timeframe. Periods of heavy rain will get going Sunday PM and we’ll also need to watch for the threat of severe storms not only tomorrow afternoon/ evening but again Monday.

Midday models are latching onto a widespread 2”-4”+ event.

The Storm Prediction Center (SPC) has increased the threat area tomorrow afternoon. Large hail is greatest concern but an isolated tornado can’t be ruled out.

All modes of severe are on the table Monday, including tornado potential once again.

If all this wasn’t enough already, a much colder air mass will plunge into the region by midweek allowing rain to mix with and change to wet snow Wednesday evening into Thursday morning. The snow may even be heavy enough for slushy accumulations in spots.

Spring at its finest across the great Hoosier state…

Permanent link to this article: https://indywx.com/2024/03/30/saturday-evening-thoughts-on-the-pending-heavy-rain-severe-event/

Mar 30

Multiple Waves Of Heavy Rain On Deck; Severe Storm Risk As Well…

Updated 03.30.24 @ 7:16a

The combination of a quasi-stationary frontal boundary, increasingly warm and humid air, and multiple waves of low pressure riding along the aforementioned boundary will lead to several rounds of locally heavy rain and also pose a strong to severe storm risk as we go through the early stages of the new week.

Precipitable water values (PWATs) will approach 1.5” to 2” at times early week (a tough feat to come by this time of year). This only raises confidence in the opportunity for this setup to generate periods of heavy, and eventually excessive, rainfall.

Widespread 3”+ totals can be expected by the time all is said and done, with locally heavier amounts.

If the heavy rain event wasn’t enough, we also need to be on guard for the threat of severe storms Sunday and Monday.

In particular, it’s Monday’s risk of severe that has us most concerned, including all modes (hail, wind, and a TOR threat). We recommend reviewing your family’s severe weather safety plan and make sure to have a way to receive any warnings that may be issued.

The heavy rain event will come to an end by Tuesday evening, but if we didn’t have enough to track already, we’ll add in the potential of rain to mix with wet snow Wednesday. Regardless, expect a much colder and blustery time of things as this bigger storm departs by midweek.

Permanent link to this article: https://indywx.com/2024/03/30/multiple-waves-of-heavy-rain-on-deck-severe-storm-risk-as-well/

Mar 29

Long Range Report: Active Pattern As We Head Into And Through April…

Updated 03.29.24 @ 6:57a

Don’t get used to any one particular pattern for any length of time over the next few weeks. “Active” will sum things up best in a single word as a transitional regime takes hold.

The NEW JMA Weeklies highlight this transitional theme best over the upcoming (4) week period.

Week 1

Week 2

Weeks 3/4

To no surprise, especially given the transitional nature of the pattern, the upcoming few weeks should feature above normal rainfall for a good chunk of the Great Lakes and Ohio Valley.

We’ll also want to keep tabs on the potential of greater than average severe weather episodes, notable considering we’re almost into April. It’s a byproduct of the “topsy-turvy” look to the overall pattern.

Pattern drivers, including the EPO, back up the transitional them over the upcoming couple weeks. Reminder, negative phase favors chilly conditions and positive phases favor milder air (compared to average). This look, too, screams wet and stormy.

Bottom line, buckle up for an active storm track and associated heavier than normal rainfall over the next few weeks. Temperature regimes will feature a bit of it all, including above and below normal periods, likely all balancing out slightly above normal when all is added up.

Permanent link to this article: https://indywx.com/2024/03/29/long-range-report-active-pattern-as-we-head-into-and-through-april/

Mar 26

VIDEO: Line Of Storms To Develop This Afternoon; Busy Pattern Ahead To Close March And Open April…

Updated 03.26.24 @ 7:30a Wind is the story this morning, and that will continue through the afternoon and evening. A “big hair warning” is in effect today. 🙂 A bit…

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Permanent link to this article: https://indywx.com/2024/03/26/video-line-of-storms-to-develop-this-afternoon-busy-pattern-ahead-to-close-march-and-open-april/

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