TEMPERATURES DIVE OVERNIGHT
Who is ready for some snow? The spring-like feel will fade fast as much colder air returns overnight. Reaching 61° Tuesday - the normal high for April 7th, the temperatures will tumble sharply by sunrise. Tuesday's hihg was well short of the record but was the 2nd warmest ever for the date!
NO 1" SNOW IN OVER A MONTH
The lack of snowfall for the season is rather remarkable. To date we are now 12" below normal with only 6.6" of snowfall for the season. That's one-third of the normal snow for the season and now reaching 33 days since the last 1" snow in Indianapolis.
With colder air in place Wednesday the jet steam will streak south into the state bringing a band of snow with it. Snow will develop by afternoon and increase in coverage by late afternoon.
Snowfall WILL impact the evening commute Wednesday with accumulation likely. Initial snow may be slow to stick on area roadways but as the evening wears on there is a chance of some roads becoming slick.
A band of potential 1" snowfall looks to fall just north the jet stream track through central/north-central Indiana. Off 8 various snow generating computers the average snowfall for the city of Indianapolis comes in at 1.3" with range of .4" to 2.5".
UPDATED snowfall number are in and they have increased slightly. The in house RPM and latest NAM models look quite similar in snowfall projections. Amounts of up to 2" have been indicated by the new NAM model below.
I'm posting the latest RPM computer snowfall forecast and the National Weather Service's probability of 1" snowfall off the SREF ensemble forecasts. Probability of 1": snowfall (50%) in highest along and north of I-70.