• Category Archives Drizzle
  • Friday Morning Notebook: Warmer Times This Weekend…

    Happy Friday, friends.  We’re still cold this morning, but a look at the change in temperatures compared to 24 hours ago shows the milder trend that will be with us through the upcoming weekend.  Highs today will reach the upper 40s and 55-60 Saturday.

    Winds will turn strong and gusty out of the southwest this afternoon, noted by the tightly packed isobars (lines of equal pressure) along with considerable mid and high level clouds.

    Clouds will lower and thicken Saturday and we may also have to deal with periods of fog, as well.  Showers and drizzle will lift into town as the day progresses, especially by afternoon and evening.

    We don’t expect heavy rain this weekend.  In fact, model data continues to really back off on expected totals.  The general consensus is between 0.15″ and 0.25″ across central Indiana.

    After a mild Saturday, cooler (but not cold) air will ooze into the Ohio Valley Sunday.

    Resurgent cold air will blow into town during the middle and latter portions of the upcoming work week.  Highs will return to the 30s with overnight lows in the lower 20s.  We’ll likely add scattered snow showers into the mix as well.


  • Icy Concerns Grow Again Tonight…

    After a night of freezing rain, many roadways throughout central IN remain glazed over and hazardous as of this update.  If you absolutely don’t have to travel today, please don’t.  Allow road crews to do their job.  Additionally, we have growing concerns of a new round of freezing rain to sleet and eventually snow tonight.  Lingering moisture on roadways will result in “flash freeze” conditions and treacherous travel tonight into Sunday.

    First, a tip of the hat to short-term modeling, including the NAM, for suggesting we’d have a very difficult time eroding the shallow arctic air at the surface across most of central IN today.  While we never bought into the mid/ upper 50s idea the GFS and Euro were once suggesting, we did initially think 40s were in store today.  Forget about it.  Mid to potentially upper 30s are the best we can do today and temperatures will crash this evening as not one, but two, arctic fronts push through central IN.  Even if we didn’t have additional precipitation inbound tonight, “flash freeze” conditions would develop from lingering moisture and lead to renewed problems on area roadways.  Throw in another wave of low pressure riding along the pressing arctic front and a whole slew of problems will develop yet again from a freezing and frozen precipitation perspective.

    Note the incredible temperature gradient from downstate to central and northern Indiana early this afternoon.

    hrrr_t2m_indy_6The heavy, dense, arctic air will win out as evening turns into nighttime.  Indianapolis is back to the freezing mark around 6p and into the 20s by 9p.

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    hrrr_t2m_indy_13Temperatures will continue to fall through the day Sunday and by Monday morning central Indiana will be in the single digits, with below zero readings across northern parts of the state.

    hires_t2m_indy_49Wind chill values of 10 to 20 degrees below zero will be common by Sunday night into Monday morning across central Indiana.

    gfs_windchill_indy_8Areas of drizzle and freezing drizzle will continue across the region into the early afternoon, but begin to expand in coverage and intensity once again by evening.  Note the area of freezing rain expand across central IN, including Indianapolis, between 4p and 7p.

    4p

    6p

    7pFreezing rain will eventually begin to mix with sleet and eventually transition to light snow during the overnight from northwest to southeast.  A coating of snow to less than 1″ is a good bet on the new icy glaze that develops tonight.

    When you factor in the current hazardous conditions in place along with the fresh push of arctic air and precipitation tonight, it’s a good idea to hunker down inside and remain off area roadways.  We have big concerns of new travel problems developing by evening across central Indiana.  By this time tomorrow, our attention will turn to the bitterly cold air and dangerous wind chill values developing.

    More later, including prospects of snow around Christmas.  As always, you can follow our updates on social media by following us on Twitter (@indywx) and Facebook.  Stay safe!

     


  • Damp, Chilly Tuesday…

    Heavy drizzle and patchy light rain are falling across central IN this morning along with temperatures in the upper 40s to lower 50s.  It’s a raw morning.  As we move forward, areas of light rain and drizzle will remain in the forecast into the early afternoon before we potentially brighten the skies in areas during the afternoon.  That sun may be just enough to pop a shower or (non-severe) storm during the afternoon.

    1Reinforcing chilly air will blow into town Wednesday and will be accompanied by a band of showers and thunderstorms tomorrow morning.  Once this passes, expect breezy conditions with steady or slowly falling temperatures through the day.  Pack a jacket tomorrow as temperatures remain in the lower to middle 50s.

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    3Rainfall amounts should be in the 0.25″-0.50″ range between now and Wednesday afternoon.

    We’ll dry things out and warm up as we progress through the latter portions of the work week and the weekend.  Beforehand, look for lows in the upper 30s Thursday morning.

    As we look ahead, shower and scattered thunderstorm chances will be on the increase Saturday evening.  We’ll “sure up” timing in the days ahead.

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