Category Archives: Unseasonably Cool Weather

Chilly, But Overall Dry Pattern Until Perhaps Around Halloween…

The short and medium range weather pattern will be highlighted by a colder than average regime, but one that’s also drier than normal.

A cooler than average, but drier than normal pattern will remain in place through the upcoming (10) days. Image courtesy of Weathermodels.com.
A few weak weather makers will scoot through the region over the upcoming (10) days, but be moisture starved. Image courtesy of Weathermodels.com.
After a warm open to October, the sustained period of chilly air is welcome by many. Image courtesy of Weathermodels.com.

The positive PNA will continue to support the mean trough position in the central and eastern portion of the country as we rumble into late October.

As we look ahead, there are growing indications a more significant storm may impact the general region as we get closer to Halloween.  This is the next time frame we’re closely monitoring for the potential of an impactful storm system.  Given the overall setup, we would be surprised if this particular storm didn’t present a wintry side, as well, but it’s simply too early to know the details from a couple of weeks out.  Stay tuned.

Potential is present for “fun and games” around Halloween… Image courtesy of Weathermodels.com.
No Comments AG Report, Autumn, Forecast Discussion, Forecast Models, Halloween, Harvest'18, Long Range Discussion, PNA, Rain, Unseasonably Cool Weather, Unseasonably Warm

First Frost Of The Season Comes Right On Schedule…

The average date for the first frost and freeze in Indianapolis takes place on October 11th and 14th, respectively.  Right on cue, the first frost of the season will take place for most central Indiana neighborhoods over the weekend.  If you happen to miss out on the frosty conditions this week, reinforcing chilly air will descend on the region early next week.

We forecast (3) of the upcoming (7) nights to fall into the 30s.  This is, obviously, a significant change from the extended summer like conditions we’ve been dealing with as of late.  One primary driver behind the significantly cooler pattern has to do with the change in the PNA.  The shift towards a positive PNA will result in the cooler air remaining in place with more staying power than the fleeting cool shots of a few weeks ago.

A series of cold fronts will sweep through the Ohio Valley over the upcoming couple of weeks and each will likely feature progressively cooler conditions.

With the positive PNA in place, it’s no surprise to see the mean trough setting up shop over the eastern portion of the country.

At the surface, we see the cool pattern taking hold into not only the short-term, but the 10-15 day range, as well.

No Comments Autumn, First Freeze, First frost, Forecast Discussion, Forecast Models, Harvest'18, Long Range Discussion, PNA, Summer, Unseasonably Cool Weather, Unseasonably Warm