Category: Forecast Discussion

Apr 22

Frosty Weather Turns Wet Saturday…

Screen Shot 2015-04-22 at 7.02.51 PMHighlights:

  • Frosty start Thursday and Friday for some
  • Wet, chilly, and raw Saturday
  • Brighter 2nd half of the weekend
  • Watching next week

4Tonight’s water vapor loop, courtesy of WeatherTap.com, is showing drier air making it’s way into our region.  This will set the stage for plentiful sunshine Thursday and Friday (well deserved, I might add :-)).  Winds will also begin to diminish this evening.  The combination of winds going calm and clearing skies will promote the chance of a frost and freeze across central IN tonight (and likely again tomorrow night) as reinforcing chilly air pours into the region.  Those with ag. interests be sure to take note.

Attention then turns to the weekend and we’ll label it as “half-n-half” for now.  A wet, chilly, and raw Saturday should give way to increasing sunshine Sunday.  Early to mid next week will provide a new set of challenges and we’re leaning towards the wetter solutions yet again.  Keep in mind the drier forecast model sets (GFS in particular) had to come around and play catch up to those leading the way Saturday (EC and GEM).  Expect changes and stay tuned.

1Forecast lows tonight, thanks to Weatherbell.com, are suggested to fall into the lower to middle 30s.  Should the wind go calm then expect a few readings around 30 degrees.  We’ll likely dip near these readings again Friday morning.

2After a dry close to the work week, moisture increases late Friday night into Saturday morning.  Expect a wet Saturday with early rainfall numbers projected in the 0.50″ to 1″ range.

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Permanent link to this article: https://indywx.com/frosty-weather-turns-wet-saturday/

Apr 21

Rain Early Wednesday Morning; Chilly Pattern Continues…

Screen Shot 2015-04-21 at 9.39.23 PMHighlights:

  • Unseasonably chilly air arrives behind a band of showers
  • Needed dry time Thursday-Friday, but frost potential looms
  • Wet, cold, and raw Saturday

It’s been a chilly and WINDY open to the week.  After a day of sunshine Tuesday, clouds thickened Tuesday evening and showers aren’t far behind.  We forecast a band of light to moderate rain to move north to south during the overnight period- particularly between 1a and 5a.  Unseasonably cool air will be the rule as we wrap up the work week and head into the weekend.  A new storm system looks to deliver widespread rain Saturday.  Factor in temperatures running well below average and you have the makings for a rather nasty Saturday (a far cry from last Saturday’s sunshine and 80 degree warmth).

1A band of showers will move through central IN Wednesday morning and will be followed by another push of unseasonably cool air.  Forecast radar shown above, courtesy of Weatherbell.com, shows overnight rain moving through the region.  Between one tenth and one quarter inch is a good bet.

3High resolution forecast models suggest many dip to around freezing Thursday and Friday morning.  Those with ag. interests, take note.

2Wet weather returns Saturday.  The European and Canadian forecast models led the way with this system and now the GFS (shown above) is playing catch up towards a cold and wet Saturday.

Permanent link to this article: https://indywx.com/rain-early-wednesday-morning-chilly-pattern-continues/

Apr 19

Unseasonably Cool Stretch…

Screen Shot 2015-04-19 at 9.10.05 PMHighlights:

  • More heavy rain and embedded thunder tonight
  • Unseasonably cool air this week
  • Frost and freeze threat

SAT_EUS_WVENH_ANILow pressure over IN this evening will move north into the Great Lakes Monday and strengthen along the way.  A cold front will sweep through the region later tonight and Monday morning and shut off the heavier rainfall.  Before that we have several hours of additional moderate to heavy rain and embedded thunderstorms tonight.  Tomorrow will be a breezy and MUCH cooler day and help set the tone for the week as a whole.  We’ll watch for a weak disturbance to provide a shower chance mid week and keep a close eye on the weekend for the chances of rain.  Model data is in disagreement on Saturday as of now.

RAD_KIND_N0R_ANITonight’s radar, courtesy of WeatherTap.com, shows another slug of moderate to heavy rain and embedded thunder moving in from the south.  Heavy downpours will make for excellent sleeping weather tonight.

Overall rain coverage will decrease significantly as we progress through Monday, but we can’t totally rule out the chance of afternoon showers redeveloping in “pop-corn” fashion as just enough sunshine may work on what will be a very unseasonably cool air mass moving in.

Forecast radar, courtesy of Weatherbell.com, shows this Monday afternoon.

1Unseasonably chilly air will be the rule this week- including 50s for highs most every day.  The only exception may be highs around 60 Tuesday and highs that may not make it out of the 40s Wednesday.  Frost and freeze conditions will be a concern on multiple nights/ mornings this week.

2 3After a warm month (to date) [image 1], Mother Nature will do what she does best- attempt to balance things out the upcoming 7-10 days [image 2].

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Permanent link to this article: https://indywx.com/unseasonably-cool-stretch/

Apr 18

Almost Summer-like Today Before Sunday Storms…

Screen Shot 2015-04-18 at 8.02.52 AMHighlights:

  • Lower 80s today!
  • Heavy rain and storms Sunday
  • Cooler, showery Monday
  • MUCH cooler next week

SAT_EUS_WVENH_ANIThis morning’s water vapor image, courtesy of Weathertap.com, shows the big swirl over the CO Rockies.  This will continue to move slowly east over the next couple of days.  Surface low pressure will organize over the lower MS Valley tonight and move north into Indiana Sunday afternoon and evening.  After a beautiful Saturday, clouds will increase tonight and widespread rain and thunderstorms will arrive Sunday morning.  With a deep Gulf connection, expect heavy rainfall, as well.  Much cooler air will then take over next week- jackets will be needed!

Before the rain and storms move in Sunday, be sure to enjoy the weather today- lots of sunshine and lower 80s!

hrrr_t2m_max_indy_12Forecast radar, courtesy of Weatherbell.com, shows the wet and stormy Sunday ahead.  Rain will push north through early and mid morning Sunday, continuing into the evening.

hires_ref_indy_32 hires_ref_indy_37 hires_ref_indy_40An average of 1″ to 1.5″ of rain is likely, with isolated heavier totals Sunday.  The model breakdown is below.

The Canadian shows the least amount of rain, with 0.50″ – 0.75″ through central IN.

GEMTotThe GFS paints 1.2″ of rain through central IN, with a “ribbon” of enhanced rainfall along the IN/ IL state line.

GFSTotThe high resolution NAM places emphasis on central and eastern portions of the state, including 1.5″ to 2″ amounts.

NAMTotThe RGEM shows a similar story to the high resolution NAM (above) with 1.5″ to 2″ through central IN.

RGEMTot

 

Permanent link to this article: https://indywx.com/almost-summer-like-today-before-sunday-storms/

Apr 17

Friday Evening Video Update…

https://youtu.be/_5kethxFEUw

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Permanent link to this article: https://indywx.com/friday-evening-video-update-3/