Category: Forecast Discussion

The Pending Halloween Pattern Transition And Initial Taste Of Winter…

Updated 10.21.23 @ 7:34a

The upcoming week will feature a pattern shift, albeit a transitional one, that will drive unseasonably warm temperatures north into the Ohio Valley and Great Lakes region. This will be on the heels of the first widespread frost of the season Monday morning. Ah, Indian summer at its finest.

A couple of disturbances will try to make inroads into this ridge mid and late week, but will likely struggle in providing much in the way of precipitation or cooler air initially. As we push into the latter part of next week and the Halloween weekend, a larger storm system is anticipated to move east out of the Plains region. This storm will likely deliver the first widespread winter impacts (outside of the mountains of course) of the fall season.

Specifics will be fine tuned as we get closer, but we expect a widespread rain (perhaps a clap of thunder) here next weekend followed by sharply colder weather prior to Halloween, itself.

We’re left with a much different pattern to open November. This is the type regime that will likely lead to the first lake effect snow in the snow belt, drive the 1st widespread freeze into the Ohio Valley, and result in highs in the 40s in the wake of the frontal passage.

Farmers and those with ag interests, we’d suggest wrapping up harvest 23 efforts by mid next week if at all possible. Conditions will certainly become harsher and less favorable by next weekend. More to come…

Permanent link to this article: https://indywx.com/2023/10/21/the-pending-halloween-pattern-transition-and-initial-taste-of-winter/

VIDEO: Gusty Saturday Followed By A Frosty Start Monday Morning; Warmer Week On Deck…

Updated 10.20.23 @ 7:34a

You must be logged in to view this content. Click Here to become a member of IndyWX.com for full access.  Already a member of IndyWx.com All-Access?  Log-in here.

Permanent link to this article: https://indywx.com/2023/10/20/video-gusty-saturday-followed-by-a-frosty-start-monday-morning-warmer-week-on-deck/

VIDEO: Damp Thursday Gives Way To A Gusty Saturday; A Lot To Discuss Over The Next 10 Days…

Updated 10.19.23 @ 7:17a

You must be logged in to view this content. Click Here to become a member of IndyWX.com for full access.  Already a member of IndyWx.com All-Access?  Log-in here.

Permanent link to this article: https://indywx.com/2023/10/19/video-damp-thursday-gives-way-to-a-gusty-saturday-a-lot-to-discuss-over-the-next-10-days/

Unsettled Weather Returns To Close The Work Week; Widespread Frost To Open The New Week…

Updated 10.18.23 @ 6:17a

Today will start on the seasonally cool side with plentiful sunshine. We’ll note an increase in mud and high level clouds this afternoon that will eventually lower and thicken tonight. These clouds will signal rain by Thursday morning, and perhaps embedded thunder. The culprit? A cold front. This front will move through the state during the day Thursday.

Additional showers will follow Friday morning thanks to trailing upper level energy.

Most area rain gauges should expect to accumulate between 0.10” and 0.30” during the aforementioned time period but there will be some 0.50”+ exceptions.

Seasonally chilly air will flow in behind this system for the weekend. As high pressure settles overhead, the coldest night upcoming should be Sunday night/ Monday morning where widespread frost is expected across central Indiana. Most will wake up to temperatures between 33° and 35°.

Permanent link to this article: https://indywx.com/2023/10/18/unsettled-weather-returns-to-close-the-work-week-widespread-frost-to-open-the-new-week/

VIDEO: New Seasonal Guidance “Ups The Ante” For Upcoming Winter; Unsettled Close To The Work Week…

Updated 10.17.23 @ 5a

You must be logged in to view this content. Click Here to become a member of IndyWX.com for full access.  Already a member of IndyWx.com All-Access?  Log-in here.

Permanent link to this article: https://indywx.com/2023/10/17/video-new-seasonal-guidance-ups-the-ante-for-upcoming-winter-unsettled-close-to-the-work-week/

VIDEO: Early And Midweek Improvements Ahead Of A New Storm System…

Updated 10.16.23 @ 7:38a

You must be logged in to view this content. Click Here to become a member of IndyWX.com for full access.  Already a member of IndyWx.com All-Access?  Log-in here.

Permanent link to this article: https://indywx.com/2023/10/16/video-early-and-midweek-improvements-ahead-of-a-new-storm-system/

VIDEO: Throwing It On Repeat…

Updated 10.15.23 @ 7:50a

You must be logged in to view this content. Click Here to become a member of IndyWX.com for full access.  Already a member of IndyWx.com All-Access?  Log-in here.

Permanent link to this article: https://indywx.com/2023/10/15/video-throwing-it-on-repeat/

Saturday Morning Rambles…

Updated 10.14.23 @ 7:43a I. An upper low and trough of low pressure will lead to a return of cloudiness, additional nuisance variety showers along with gusty winds and falling…

You must be logged in to view this content. Click Here to become a member of IndyWX.com for full access.  Already a member of IndyWx.com All-Access?  Log-in here.

Permanent link to this article: https://indywx.com/2023/10/14/saturday-morning-rambles-12/

Tracking 2 Storms In The Week Ahead…

Updated 10.13.23 @ 7:25a

I’ve had the opportunity this week to spend time with family and loved ones in the gorgeous western NC and eastern TN mountains. Fall foliage is starting to pop above 2,000 feet, especially after the cooler air this week.

At any rate, thank you for your patience and flexibility this week as posts have been a bit off schedule. We’ll resume “normal programming” Saturday.

When we look ahead to this week, there are 2 storms of note. The easy and obvious first system will deliver a round of storms this evening. A few of these will have gusty winds and a few leftover “backlash” showers will continue through the weekend as the upper low swirls overhead. Once again, we’ll turn much cooler tonight and continue into the new week.

Rain and storms will roll across the state tonight.

Rainfall totals of 0.25” to 0.75” will be common for central and southern Indiana with heavier amounts of 1” to 1.5” across the northern 1/3 of the state.

Our second system is much more complex and will come into the picture late week (next Friday/ Saturday time frame). Guidance agrees on the energy becoming cut off from the main steering flow but is far from etched in stone with the specifics at this distance. It’ll certainly be a topic of discussion in the days ahead.

Permanent link to this article: https://indywx.com/2023/10/13/tracking-2-storms-in-the-week-ahead/

LR Update: Checking In On The Pattern Drivers To Close October…

Updated 10.12.23 @ 10:50a

As we roll into the second half of October, a look at the primary pattern drivers suggests there should be a lack of any sort of sustained above normal temperatures.

The PNA (image 1) should remain mostly in a positive state over the next couple weeks while the EPO (image 2) is expected to be in a neutral to negative state.

Furthermore, the MJO is forecast to sneak into Phase 1 late month. This is the correlation in October:

It’s hard to find much at fault with the NEW JMA Weeklies posted earlier today.

Temperatures

Week 1

Week 2

Weeks 3-4

Precipitation should run average to slightly below normal over the span of the upcoming (2) weeks:

Permanent link to this article: https://indywx.com/2023/10/12/lr-update-checking-in-on-the-pattern-drivers-to-close-october/

IndyWx.com