Category: Heavy Rain

Enjoy The Dry Time While We Have It…

Screen Shot 2016-06-29 at 6.18.41 PMHighlights:

  • Pleasant air in the short-term
  • Storm chances Friday
  • Widespread soaker

Looking Increasingly Wet For The Holiday Weekend…High pressure will supply continued dry times Thursday, but clouds will increase during the evening and give way to scattered showers and embedded thunder Friday. This doesn’t look like a huge deal, but don’t be surprised by rain and/ or a clap of thunder to close the work week.  That said, there will be more dry time than wet Friday.

As we rumble into the long Independence Day weekend, confidence continues to increase for a widespread soaking rain to develop.  Thankfully, Saturday still looks mostly dry, but we think clouds will be on the increase late in the day, followed by rain overspreading the region from west to east as Sunday afternoon approaches.  Widespread rain should continue into Monday.  We still have questions on timing and precise placement of heaviest rains (2″+ totals), but it’s safe to say most, if not all, of the region can expect a long-duration rain event developing Sunday.  Stay tuned.  It’ll also be cool.  Areas where heaviest rains set up Sunday likely won’t climb out of the 60s.

Drier air will return late Monday into the middle of next week, but we caution that another wet weather maker appears to have eye on the region beginning next Thursday.

Upcoming 7-Day Precipitation Forecast:

  • Snowfall: 0.00″
  • Rainfall: 1.5″-2.5″

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Long Independence Day Weekend Taking A Wet Turn…

A cold front will slide through central IN Friday, but heavy rain and widespread storms aren’t expected as the front slides through the region. Instead, we’ll keep mention of scattered showers before drier air returns Saturday (with lots of sunshine).

For the purpose of this post, we’re more focused on the all-important Sunday-Monday forecast. Sunday will likely dawn dry, but trends are for wetter times late Sunday into Monday.  A slow moving area of low pressure is forecast to track out of the central Plains Sunday into the Ohio Valley Monday. Copious moisture will be affiliated with this area of low pressure, including a severe threat to the south of the storm track.  Heavy rainfall will fall along and north of the track of the low.  While we still have a couple days to fine tune things, it’s becoming increasingly likely that portions of the forecast area (especially southern and central areas) are impacted by heavy rain later Sunday into Monday.

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6We note ensemble support, as well.

3Rain totals will likely be hefty for some, including widespread 2″+ totals where the axis of heaviest rain falls.

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2Stay tuned as we continue to look over data and update the important Independence Day weekend forecast.

Permanent link to this article: https://indywx.com/long-independence-day-weekend-taking-a-wet-turn/

Catching Up On Tuesday Night…

June to date is running warmer (+3.6°) and wetter (+0.71″) than normal in Indianapolis.


That said, drastic changes have taken place over the past 24 hours for the cooler and drier. In fact, as we write this, many central IN neighborhoods are enjoying temperatures in the lower 60s already at the 10 o’clock hour. An unseasonably cool night is in store with widespread low-mid 50s come Wednesday morning. (Anyone else craving fall)?!🍂


Highs Wednesday afternoon will only reach the upper 70s for most.


Our next chance of rain will arrive on scene to close the work week, however, moisture return still doesn’t look terribly impressive. We’ll continue advertising widely scattered coverage Friday. 


The plot thickens as we roll into the crucial Independence Day weekend. Latest data suggests a hefty rain storm will be in our general vicinity, but we caution many details have to be ironed out. Our forecast, locally, Sunday-Monday may differ drastically over a relatively short piece. Fine tuning on track, timing, and amounts will have to be adjusted.


GFS ensemble members also show the challenging times ahead.


Stay tuned! In the meantime, get those window opens and enjoy the weather! 

Permanent link to this article: https://indywx.com/catching-up-on-tuesday-night/

PM Strong Storms…

The morning is off to a sunny, muggy, and warm start.  Temperatures will rise into the lower 90s this afternoon, but when we look at heat indices, it’ll feel like around 100 degrees across many central IN neighborhoods.

The visible satellite shows the sunny skies in place right now, but we note the cloud deck off to the northwest.  That’s in association with a frontal boundary that will press through our region tonight.

VisA line of thunderstorms will develop later this afternoon and a few of these could be strong to severe as they push to the south.  Large hail and damaging straight line winds are of greatest concern.  We think best chances of thunderstorms across central IN will come during the mid to late afternoon hours into the early evening.

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11pThe air mass is loaded with moisture today.  In fact, precipitable water values will zoom to 2″+ this afternoon and suggest the threat of torrential rainfall with any storm that develops.

2Once to Tuesday, a MUCH cooler, drier air mass will arrive on the scene and help set up an unseasonably cool close to the month.

Permanent link to this article: https://indywx.com/pm-strong-storms/

Latest Thinking On What Will Be A Busy Wednesday…

The SPC (Storm Prediction Center) maintains a significant severe weather risk across Indiana Wednesday.  A Slight risk encompasses the southern portions of the state, while an Enhanced risk takes up residence across central Indiana.  Finally, a Moderate risk is located across the northern third of the state.  Given the latest data, we wouldn’t be surprised if a portion of the Enhanced/ Moderate risk areas are upgraded to a rare High risk during the early Wednesday morning SPC update.  Regardless, we want to be very clear that Wednesday is a potentially dangerous weather day across Indiana.

2We won’t bore you with the meteorological ingredients/ lingo that are coming together to lead to an active Wednesday with this post, but please know that nearly all severe weather parameters point to the threat, and even likelihood, of an active day.

That said, there are unknowns.  How does morning convection impact our ability to heat/ destabilize things during the afternoon?  Are models underestimating the cold pool that will likely develop with the storms during the afternoon/ evening?  If so, a further southeast track and more robust situation could unfold (when compared to what forecast radar products suggest as of this post Tuesday evening).

While all modes of severe weather are certainly possible, for our immediate region, we’re particularly concerned for the threat of widespread damaging winds and flash flooding.  It wouldn’t surprise us if localized 3″+ amounts fall across portions of central and northern IN Wednesday.  Precipitable water values (PWATs) surging to 2″+ give increased confidence on localized flash flooding, especially considering the recent wet times.

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FlashFloodThreatThe first of multiple storm clusters will likely be moving into central IN Wednesday morning.  Here’s an idea of what the radar may look like around 7a.

1We think we undergo a “lull” in the action Wednesday afternoon before a potentially more serious complex of storms blows into town during the evening hours.  We caution that we’re not as confident on specific timing with the evening round of storms.

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4Current data would imply a tornado threat for areas from northern IL into northwestern IN with the afternoon/ evening convection before “morphing” into a more widespread damaging wind threat as the line propels southeast into the nighttime hours.  Timing will have to be fine tuned as Wednesday morning arrives.

To close, if you take anything from this post, please understand the importance of knowing your family’s severe weather safety plan.  Have a means of getting the latest watch and warning information from the National Weather Service and take any and all bulletins seriously.

Much more later!

Permanent link to this article: https://indywx.com/latest-thinking-on-what-will-be-a-busy-wednesday/