Archive for SkyTrak Weather Blog
Caution is advised if you’re traveling into the northeastern corner of Indiana overnight into early Saturday. Reports of a heavy mist that’s freezing on contact and creating slick roads, with numerous accidents in Whitley and Allen counties. A Freezing Fog Advisory is in place up there until 7am and includes Marion, Peru, Hartford City and Fort Wayne.
Though isolated pockets of freezing fog or drizzle are possible farther south… it shouldn’t be a widespread problem. However the stagnant air in place across central Indiana is. The combination of a strong temperature inversion (warm air over cold air), light wind and overcast allows pollutants to build to unhealthy levels this weekend. In my 17 years I can’t recall a Freezing Fog Advisory and Air Quality Action Alert at the same time. The Air Quality Alert includes of the Indianapolis metro area and surrounding counites as well as Munice and Kokomo.
Conditions remain cloudy and stagnant Sunday… though temperatures gradually warm to near 50 degrees Sunday afternoon. Some mist and fog is possible again early Sunday, but much of the day is dry.
Rain becomes likely Monday afternoon as the first of two systems to impact us next week arrives. Colder air returns Wednesday and may set the stage for a potential wintry weather maker across the Ohio Valley and Great Lakes. This may mark the transition to a stormy change to the overall pattern for the second-half of the month. Stay tuned and check back for updates. Have a great weekend – Sean Ash
**** Air Quality Action Days This Weekend Due To Stagnant Air/High Particulates****
Low cloud overcast arrived a few hours earlier than expected for most of the region today. Underneath this blanket of gray it’s chilly with temperatures in the low to middle 30s. Eastern Indiana reaps the reward of geography today with the clouds to arrive last there. That gives way to an increasing low cloud deck tonight.
Central Indiana will be stuck under this cloud blanket for at least the next 48 hours, as warm air (near 50 degrees) at 4-5,000 feet traps colder air (30s) at the surface. This temperature “inversion” prevents very little “mixing” of the atmosphere… breeding low cloudiness, haze, fog and mist at ground level. Air particulates will also gather and reach levels that are unhealthy for groups with sensitive respiratory systems. If you’re in the group you’ll need to minimize outdoor time this weekend.
Tonight: The clouds due serve as insulation overnight and keep temperatures fairly steady in the lower 30s. Areas of low visibility are possible along with some patchy drizzle. The
“blanket” keeps lows near freezing as opposed to near 20 Friday morning under a clear sky.
The Weekend: Afternoon high temperatures struggle into the lower 40s Saturday, hold steady Saturday night and creep to near 50 degrees Sunday afternoon… despite remaining overcast. So it’s a cloudy, cool tailgate for the Colts game Sunday at Lucas Oil Stadium.
Rain becomes likely Monday afternoon as the first of two systems to impact us next week arrives. Expect rain to continue Monday night into Tuesday morning. Colder air returns Wednesday and may set the stage for wintry precipitation next weekend.
Long range models continue to indicate signals of winter weather maker in the eastern U.S. heading into next weekend. Though at this time there remains a good deal of uncertainty regarding strength, location, temperature profiles. It’s on our watch and we’ll post updates between now and then and keep you update.
Check back for updates on a highly changeable long range forecast. Have a great weekend – Sean Ash
Cloud cover will keep us cool around Central Indiana today, but just wait until you see the weekend forecast!
Highs remain below our “normal” high of 40 for this time of year. We’ll only top out in the mid 30s today thanks to the stubborn clouds.
Tonight the clouds break and temps fall into the 20s.
We will enjoy more sunshine tomorrow, but temperatures will remain cool with highs still struggling to reach the 40 degree mark.
A big warm up comes our way for the weekend more sunshine. By Sunday we could hit 50!
Soak up the dry time while you can, more rain is back in the forecast by Monday.
By late Monday evening, temperatures were still above freezing across central Indiana. Light rain continued to fall, but the colder air was close. There were snow reports across Illinois.
The colder air will continue to push into central Indiana overnight and the rain will start to change to snow. We are not forecasting an accumulating snow, but bridges and overpasses could be a bit slick early Tuesday, with temperatures near freezing. Highs on Tuesday will only be in the middle and upper 30s. There will be a few snow showers and flurries scattered across the area on Tuesday.
The rest of the 7 day forecast is quiet, with cold air expected through Thursday.