Category Archives: T-storms

Weekend Improvements…

Highlights:

  • Chilly Saturday
  • Brighter Sunday
  • Unsettled week ahead

Improving Weekend Weather…The second half of the weekend will most certainly be more pleasant than the way we’re opening up.  Expect mostly cloudy skies with a potential quick-hitting shower, especially from Indianapolis and points northeast through the afternoon hours.  Drier air will then push in this evening and help set-up a very pleasant Sunday.  After a chilly Saturday, lower 50s sure will feel nice with that sunshine Sunday.

Unfortunately, we won’t be able to hang onto the sunny conditions for long.  Clouds increase Monday and evening showers develop.  Tuesday is a transition day and we’ll include mention of showers Tuesday morning before drier, colder air builds south Tuesday night and Wednesday.

A fast transition to a moist southerly flow will greet us for the latter portions of the week and we’ll ramp up shower and thunderstorm chances Thursday PM into Friday as a cold front approaches.  It’ll also be very windy (non-thunderstorm gusts of 40 MPH+).

Upcoming 7-Day Precipitation Forecast:

  • Snowfall: 0.00″
  • Rainfall: 0.50″ – 1.00″

Our friend, Moe, sent these images from earlier in the week just north of Frankfort.  Despite the unseasonably cold weather we’ve been dealing with, these shots, separated only by a few hours, illustrate the power of that increasingly high March sun angle.

7-Day Outlook, Arctic Cold, Forecast, Rain, Spring, T-storms, Unseasonably Cool Weather, Unseasonably Warm, Weather Photos, Windy

Thursday Morning Weather Rambles…

1.)  All of a sudden what was a warm March has revered big time.  Officially, Indianapolis is running close to 1° below normal on the month and will continue to fall further once today’s data is factored in.  Always fun to see Mother Nature “balance” things out.

2.)  It’s another cold start to the day with many central Indiana neighborhoods in the teens and hard freezes extending south into Florida this morning.

3.)  Sunshine can be expected today and after the frigid beginning, a moderating trend will begin this afternoon that will send temperatures into the lower to middle 40s.  That’s still close to 10° below average for daytime highs, but will feel much better than what we’ve been dealing with over the past several days.  Add in that high March sun angle and it’ll actually be a very pleasant afternoon.

4.)  Unfortunately, we won’t hang on to the sunshine for St. Patrick’s Day.  A warm front will lift northeast through the region during the overnight and lead to an increase in clouds by evening.  A wintry mix of sleet and freezing rain will impact central IN predawn Friday morning before transitioning to showers mid-to-late morning.  “Light” is the key word here with models suggesting less than 0.20″ total.  By Friday afternoon we’re back to dry times.

5.)  We’ll turn a touch cooler Saturday and it’ll be a blustery day, as well.  A couple of early snow showers are possible across east and northeast portions of the state before afternoon sunshine returns.  High pressure settles in overhead Saturday evening and will set up a nice second half of the weekend- lots of sunshine and milder temperatures by Sunday (lower 50s).

6.)  Looking ahead, the quiet times will be hard to come by as we progress through the latter portions of the month.  Both the new JMA Weeklies (shown below) and other ensemble guidance is bullish on a wetter than average close to the month, and also one that features wild temperature swings.  Thoughts shift back to severe prospects, especially for our friends to our south and the potential of backlash wet snow showers in the colder air.  From a temperature perspective, it’s a pattern that will be very “transient” with no true long-lasting periods of significant warmth, or cold- relative to average.

Arctic Cold, Forecast Discussion, Forecast Models, Rain, Severe Weather, Sleet, snow, Spring, T-storms, Unseasonably Cool Weather, Unseasonably Warm

Thoughts Shift From Storms To Snow…

Before we discuss the weekend winter storm threat, we still have to get through the overnight period-morning hours Tuesday with embedded heavy rain and storms.  Some of these storms could offer up gusty winds and a few could be strong as they rumble across central Indiana Tuesday morning.

Most of the storms should push through west-central Indiana well before the morning rush hour.

Forecast radar 4am Tuesday.
Forecast radar 6am Tuesday.

Attention will then shift to the winter storm threat this weekend- particularly Friday night through early Sunday morning.  We still have to fine tune the all-important specifics, but confidence is rising on the possibility of a significant wintry event impacting at least portions of the region this weekend.  March snow events provide added headaches of dealing with the impacts of marginal temperatures, higher sun angle/ time of day, etc.  Conversely, the tight thermal gradients noted with most late season, spring snow events can be impressive, as they can quickly feedback, ultimately leading to swaths of thumping wet, heavy snow.  Hoosiers don’t have to think back too terribly far to some impressive and impactful March snow events.  Modeling today is in relatively good and surprising agreement, especially considering the lack of agreement models have dealt us weather ‘folk for the past few months.  🙂

GFS ensemble members are focusing in on a snow event this weekend.

It’s still early in the game and a lot can (and likely will) change with model runs over the next few days.  It’s wise not to make knee-jerk reactions to the operational model solutions, but instead understand the overall pattern driving the potential of this memorable March wintry event.  Anomalously cold air in southern Canada will spill south this weekend and help aid in the “fun and games” ahead.  At the same time, given the time of year, “suppression depression” isn’t likely as their will be resistance from the south-central Plains and southeast ridging in place.  As of now, we think the I-70 corridor could be the “sweet spot” for snow totals, understanding fine-tuning will be required moving forward.  Where a snowpack accumulates this weekend, expect temperatures Sunday night/ Monday morning to fall into the 10s.

Much more later!

Forecast Discussion, Forecast Models, Rain, snow, T-storms, Unseasonably Cool Weather, Winter Storm

Rain Coverage Increases; Weekend Winter Storm Brewing?

Highlights:

  • Increasing coverage of showers and t-storms
  • Mostly dry mid week period
  • Weekend wintry fun and games

Busy Week Of Weather…The week is off to an unseasonably mild start as a strong southerly flow continues ahead of an approaching cold front.  That cold front will continue to push east today and sweep through the state Tuesday morning.  Coverage of showers will increase as we go through the late morning and early afternoon hours, but there will still be periods of dry weather today.  Best coverage of rain and thunderstorms will arrive overnight when most are sleeping and end (from northeast to southwest) Tuesday morning.

Mid week is relatively quiet as we begin to transition from a spring-like beginning to more of a winter-like close.  A weak weather system could offer up a few showers Thursday evening, but enthusiasm isn’t high for this to be a big deal.

A more significant storm will move in over the weekend.  This is a complex set-up, but we note anomalously cold air poised to spill south from Canada.  Given the trend of the winter, we’re treading lightly from hitting the big snow theme models currently suggest.  That said, the set-up is one that raises an eyebrow for the potential of a late season, impactful, winter event.  Stay tuned this week as we fine tune the details moving forward.  A word of caution, if we get snow down this weekend, we’ll have to lower temperatures even further for Sunday…

Upcoming 7-Day Precipitation Forecast:

  • Snowfall: 1″ – 3″
  • Rainfall: 0.50″ – 1.00″
7-Day Outlook, Forecast, Rain, snow, T-storms, Unseasonably Cool Weather, Unseasonably Warm, Windy

Sunday Afternoon Rambles…

1.)  It’s another unseasonably pleasant afternoon across central Indiana.  Despite a gusty SW breeze (open county is approaching 40 MPH throughout central IN Sunday afternoon), the sunshine and warm temperatures are providing a phenomenal second half of the weekend.

Temperatures are running 20+ degrees above normal this afternoon.

2.)  Clouds will begin to increase tonight and give way to showers as we open the work week.  There will be plenty of dry time Monday morning into the afternoon, but a passing shower will remain in our forecast.  Heavier rain and embedded thunderstorms will arrive on the scene Monday night into the wee morning hours Tuesday.  As a whole, we expect between 0.50-1″ of rain, overall, by Tuesday morning.

Greatest rainfall coverage will arrive overnight Monday night.

3.)  We’ll trend cooler for the mid week stretch, but nothing “cold” for this time of year.  In fact, temperatures will remain above average as high pressure provides dry conditions.

Weak high pressure builds in for mid week.

4.)  Confidence is high on an active period of weather arriving for the weekend into potentially early parts of next week.  That said, despite overall high confidence on a busy time of things, the specifics remain “murky,” at best.  It’ll be important to check back for updates on the weekend forecast as we progress through the upcoming week.  Solutions range anywhere from a period of rain and storms to possibly some wintry “mischief.”  One thing seems certain and that’s for a period of colder air (below normal) arriving in the 8-10 day period.  In fact, the latest European model suggests overnight low in the 10s late next weekend.

The weather turns active next weekend.
European Model, Forecast Discussion, Forecast Models, Rain, snow, T-storms, Unseasonably Cool Weather, Unseasonably Warm, Weather Rambles, Weekly Outlook, Windy