Storms Fire Later This Afternoon And Evening For Some…

It’s a nice start to the day, though patchy dense fog is impacting some communities this morning.  Sunshine will burn through the fog over the next hour, or two.

Screen Shot 2016-07-29 at 7.43.54 AMThat said, things will change as we progress into the prime heating hours of the afternoon and evening.  Upper level energy will rotate east out of the Plains (this morning) and across Indiana this afternoon and evening.

UntitledThis will help ignite thunderstorm development during the afternoon and evening.  While a storm could impact any given neighborhood this evening, best concentration of storms should lie north of the I-70 corridor.  Locally heavy rain will be a good bet with the stronger storms.  Localized rainfall amounts in excess of 2″ will be possible.

hrrr_ref_indy_13Additional scattered thunderstorm activity will continue Saturday, but there will be many more dry hours than wet/ stormy.

Looking ahead, a shot of heat will come out next week (lower 90 potential), but this will be transient.  By the 8-10 day period, we’re back into an active NW flow type look.  You know the drill by now.  That means potential storm complexes and the worst of the heat to our west, relative to averages.

ecmwf-ens_z500a_us_11

Storms Increase In Coverage This Afternoon…

Screen Shot 2016-07-28 at 7.27.22 AMHighlights:

  • Storm coverage increases
  • Cooler than days past
  • Unsettled pattern next week

Stormy At Times…Widespread thunderstorms have resulted in as much as 4″-5″ of rain across southeastern IN during the early morning hours.  Flash flooding has resulted (including in and around the Cincy area, as well).  Closer to the home front, upper air energy will combine with a weak surface wave of low pressure to result in an enhanced storm chance this afternoon and evening across central IN.  Some locally heavy rain will accompany the stronger storms that develop, along with vivid lightning.

Scattered storm chances will remain Friday into Saturday, but there will also be plenty of dry hours, as well.  Drier air should keep most of the state rain-free Sunday before an unsettled regime returns for early and middle parts of next week.

Upcoming 7-Day Precipitation Forecast:

  • Snowfall: 0.00″
  • Rainfall: 0.75″-1.25″ (locally heavier totals)

Storm Chances, But Plenty Of Dry Time…

Screen Shot 2016-07-27 at 7.14.50 AMHighlights:

  • Storm chances, but timing needs fine tuning
  • Turning slightly cooler over the weekend
  • Unsettled regime continues early next week

More Sunshine Today…Areas of heavy rain resulted in localized flooding across south-central IN yesterday.  While we can’t go with a completely dry forecast today, it will be an overall drier day when compared to Tuesday.  An isolated thunderstorm is possible, but most should remain dry.

Upper level energy and increased moisture will lead to a more widespread coverage of showers and thunderstorms Thursday.  With precipitable water values approaching 2″ in spots Thursday, localized hefty downpours will again be possible.

We’ll continue scattered storm chances this weekend, particularly Saturday, as renewed upper level energy moves overhead.  After a slightly cooler stretch of weather, compared to normal, we’ll begin to heat things back up next week.

Upcoming 7-Day Precipitation Forecast:

  • Snowfall: 0.00″
  • Rainfall: 0.50″-1.00″ (localized heavier totals)

Unsettled, But A Better Feel Coming…

Screen Shot 2016-07-24 at 8.26.06 AMHighlights:

  • Storm chances increase tonight-Monday morning
  • Drier, cooler air on deck
  • Widespread storms Thursday

Hang In There…It’s been a long couple of days with high heat and humidity, but relief is in sight. A cold front will move through the state Monday.  Ahead of this front, a band of showers and thunderstorms will slide through Indiana.  A few of these storms could be strong with locally heavy rain.  Best chances of storms across central IN appear to arrive tonight and Monday morning, before transitioning to southern IN Monday afternoon.  Drier air will arrive Tuesday into Wednesday.

Our next rain and storm chances are dialed up for Thursday and early indications suggest this could be a fairly widespread event.  Though we’ll maintain rain chances next weekend, coverage will diminish when compared to Thursday.  Temperatures will be much more tolerable than what we’re dealing with today.

Upcoming 7-Day Precipitation Forecast:

  • Snowfall: 0.00″
  • Rainfall: 0.75″-1.25″ (Locally heavier totals)

Thursday Evening Rambles…

1.) A big ole ridge will supply oppressive heat and humidity across the Mid West this weekend.  Unseasonably hot temperatures will combine with downright “soupy” air to create heat indices between 105-110 degrees across central IN this weekend.  Take it easy and implement frequent breaks if your plans take you outdoors.

HeatIndex

2.) Similar to what we’re seeing on radar this evening, thunderstorms will also make an appearance from time to time for some.  With an atmosphere loaded with moisture, any storm that develops will be plenty capable of producing “frog straggler” type rainfall rates.  Perhaps there will be a couple periods of more concentrated storm activity, focused on late tomorrow night and early Saturday, and again late Saturday night-Sunday morning.  We’ll keep an eye on things.

LateFriNight

3.)  The pattern is one (as has been the case all summer) that’s transient and the situation that develops to wrap up July and open August is an all-too-familiar look around these parts: NW flow aloft that offers storm potential, along with seasonal to slightly warmer than average.  It’s a wet look, overall.

WetPattern

10-Day GFS rainfall numbers are impressive across the Mid West. Soaking rains for many. Courtesy Weatherbell.com

10-Day GFS rainfall numbers are impressive across the Mid West. Soaking rains for many. Courtesy Weatherbell.com

This is what the upper air pattern should look like as we close July- 10 days from now (hard to believe)!

July31st

4.)  Looking further ahead, the latest JMA Weeklies continue to suggest the most sustained hot pattern should remain across the west as we rumble deeper into August.  That’s not to say we won’t deal with periods of hot weather here at times, but sustained heat will be hard to come by with such a pattern…

Screen Shot 2016-07-21 at 7.48.29 AM

Screen Shot 2016-07-21 at 7.48.39 AM

Cranking Up The Heat…

Screen Shot 2016-07-20 at 7.25.55 AMHighlights:

  • Much more dry time than stormy
  • Heat and humidity reach dangerous levels this weekend
  • Cooler next week

Splash And Dash Storms, But Most Remain Dry…A quick glance at the forecast above may suggest wet times, but don’t let that fool you.  “Isolated” and “scattered” are key words. While we’re still keeping an eye on the potential of a more widespread complex of storms late tonight/ early Thursday, we’re far from confident on the precise location of this potential storm complex and short term modeling isn’t offering up much help.  Regardless, with such a muggy air mass in place, an isolated storm could fire anytime between now and the weekend.  There are a couple periods we’re watching for more concentrated storm potential (Friday evening and Sunday).  Timing remains fluid.

The big story with this forecast remains the heat and humidity.  Temperatures will soar into the middle 90s this weekend and when you combine those hot readings with dew points in the lower and middle 70s, dangerous conditions result for anyone with longstanding outdoor plans.  Have a means of taking frequent breaks and receiving plenty of water.  The heat and humidity this weekend will be a serious situation.

Upcoming 7-Day Precipitation Forecast: 

  • Snowfall: 0.00″
  • Rainfall: 0.25″-0.50″ (locally heavier totals)

Heat Builds Late Week, But Doesn’t Last…

The pattern remains in a transient state.  An upper ridge will build over the region late week into the weekend.  With this will come the hottest air of the season (multiple days of lower to middle 90s starting Friday, continuing into early next week).  The hottest days appear slated for Friday and Saturday.  Heat indices will approach 105 degrees.

However, just as fast as the ridge builds over the area, we see the “want” to position itself over the Rocky Mountain region.

Hot dome will provide a couple days of highs in the middle 90s Friday-Saturday. Image courtesy of Tropicaltidbits

Hot dome will provide a couple days of highs in the middle 90s Friday-Saturday. Image courtesy of Tropicaltidbits

3

 

Note the difference of the ridge position by Day 10. Courtesy of Tropicaltidbits

Note the difference of the ridge position by Day 10. Courtesy of Tropicaltidbits

4While some oppressive heat and humidity will impact our local area to wrap up the work week and head into the weekend, this is a pattern where it’s incredibly difficult to deal with any sort of one particular weather pattern for any time of substance.  Looking forward to August, we don’t see this changing.  Remember that word we leaned on to begin summer? “Transient” remains the best way to describe the pattern moving forward, as well.

Additionally, this is a pattern that should result in a return of wet and active times as we put a wrap on July and welcome August.  It’s impossible to nail down the precise details of any one particular neighborhood’s rainfall numbers from this distance, but understand the pattern is one that should yield more locally hefty rains in the weeks ahead.

WetTo close, we’ll leave you with a look at the latest PNA pattern.  This has been the primary driver of our weather this summer, and it also argues any sort of dry, hot weather doesn’t last.  Note the positive PNA returning to close July.  This also lines up well with our idea of unsettled times returning…

Screen Shot 2016-07-18 at 5.58.35 PM

PositivePNA

Stormy Start; Heat Builds Late Week…

Screen Shot 2016-07-18 at 10.07.34 AMHighlights:

  • Storms to start the work week
  • Heat and humidity build
  • Heat doesn’t last

Renewed Storm Chances Later Today…Alarm clocks weren’t needed today as a big complex of storms and heavy rain rumbled through the state during the pre-dawn hours.  Many neighborhoods received a quick 2.5″+ during the overnight and predawn hours.  As we write this, renewed thunderstorms are firing to our west and will impact portions of the state later this afternoon.  Additional hefty rains are a good bet for some.

We’ll dry things out as we rumble through the mid week stretch and while isolated storms are possible to close the week, most folks should remain dry as a big ole’ upper ridge builds over the mid west.  The big story will be intensifying hot, humid weather- centered on Friday-Saturday.  Heat indices will approach 100-105 degrees during this time frame, as well.  The good news is that forecast data points to the associated hot dome backing west and setting up shop over the Rockies to close the month and open August.  Accordingly, the hottest anomalies will shift west, as well.  We’ll be left with a NW flow aloft providing a cooler and unsettled stretch to close the month of July and open August.

Wet

The pattern to close July and open August should look rather familiar to what we’ve seen the majority of summer. NW flow aloft with frequent rain/ storm chances. Courtesy: TropicalTidbits

Upcoming 7-Day Precipitation Forecast:

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