Category: Weekly Outlook

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/weekly-agwx-and-severe-weather-outlook-49/

Weekly #AGwx And #Severe Weather Outlook…

Updated 03.24.24 @ 8:20a

While a period of unsettled weather looms late Monday and Tuesday, the majority of the upcoming week will feature quiet conditions across our neck of the woods. We’re watching Tuesday afternoon for the potential of severe weather across the state.

The ‘mean’ trough will settle into the western CONUS and that’s where the coldest anomalies will setup shop.

A trough will take up residence across the West with only glancing blows of cooler air, locally.
A chilly week is in store for the West with the temperature swings balancing out very close to average across our area this week.
Rainfall will run average to slightly below average in the week ahead south and east.

Forecast period: 03.24.24 – 03.31.24

We’ll close the weekend with quiet conditions in place. Anticipate gusty winds to kick up Monday as our next storm system approaches from the west. This will also deliver a few showers Monday night before heavier rain and embedded thunder arrives Tuesday predawn. An additional round of thunderstorms is expected Tuesday afternoon and a few of these could become strong to severe (damaging straight line winds are of greatest concern, but an isolated tornado can’t be ruled out).

A cold front will sweep east and end the rain/ storm threat Tuesday night with calmer weather returning for mid and late week. The next chance of rain will arrive next weekend. Speaking of next weekend, though early, model guidance is suggestive that we may be looking at a heavy rain event around the time that we close out March and open April. Just something we’ll be keeping an eye on in the days ahead.

Upcoming storm dates to keep an eye on:

  • 03.25 – 03.26
  • 03.30 – 04.01

*10-day Rainfall Projection: 2.00″ to 3.00″

Permanent link to this article: https://indywx.com/weekly-agwx-and-severe-weather-outlook-48/

Long Range Report: Cooler, Drier Week 1 Turns Wetter To Close March; Open April…

Updated 03.16.24 @ 7:55a

Indianapolis is running right at average month to date from a rainfall perspective (1.78”).

We’re transitioning to a much drier pattern in the week ahead as a cooler, Canadian airmass dominates (for a change).

Several hard freezes (mid-upper 20s) are on tap in the upcoming 7-10 day period: Monday/ Tuesday morning and again late next week/ next weekend.

Cooler? Yes, but I still don’t see anything overly cold on the horizon as we navigate the next couple of weeks.

What’s more notable is the shift in the precipitation pattern over the next few weeks. The dry Week 1 (now) transitions to a significantly wetter and more active look Week 2 (below).

The JMA also sees the wetter regime.

This is forecast to continue in the Weeks 3/4 timeframe.

Continues to back up the idea of an active (wet) and stormy (more in the way of severe weather) spring as a whole.

Down the road, an eventual move into a hot, dry (compared to normal) summer may loom. (Yet one that is very active from a tropical perspective, continuing into the fall). More on that in the coming weeks…

Permanent link to this article: https://indywx.com/long-range-report-cooler-drier-week-1-turns-wetter-to-close-march-open-april/

Weekly #AGwx And #Severe Weather Outlook…

Updated 03.10.24 @ 8:21a

Another unseasonably mild week awaits, but one thing is becoming increasingly clear: we’re not finished with the cold yet. The transition to a colder time of things next week will come with unsettled conditions late this week and the weekend (I know, timing isn’t on our side).

An upper level ridge will dominate in the week ahead, but note the building heights late in the period across western NA. That will help promote a different (colder) airmass here over the wknd into early next week.
Warmer than average temperatures can be expected this week from the Plains and points east.
Precipitation should check in right around average this week across central IN and the Ohio Valley as a whole.

Forecast Period: 03.10.24 – 03.17.24

The period will open with dry and seasonably chilly conditions before a southwesterly flow takes hold and helps promote yet another quick warm-up in the work week ahead. A weak and fast moving system may deliver some scattered showers midweek but the lions share of our moisture this week will come Thursday and Friday. Colder air then pours in here over the weekend with the potential of snow getting involved by this time next week.

Upcoming Storm Dates to keep an eye on:

  • 03.13
  • 03.14 – 03.15
  • 03.16 – 03.17

*10-Day Rainfall projection: 0.75” – 1.50”

Permanent link to this article: https://indywx.com/weekly-agwx-and-severe-weather-outlook-47/

VIDEO: Source Region Change For Our Storm Systems Between Now And Next Week; Establishing A Bar On Just How Cold We Get Next Month…

Updated 01.25.24 @ 7:36a Dense fog is present yet again this morning, but at least we’re not dealing with heavy rain. That changes later this evening as a slug of…

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Permanent link to this article: https://indywx.com/video-source-region-change-for-our-storm-systems-between-now-and-next-week-establishing-a-bar-on-just-how-cold-we-get-next-month/