Indianapolis, IN – Drivers across central Indiana are urged to use caution this Sunday morning as forecasters warn of flash freeze conditions developing after Saturday’s snow melt. Temperatures fell sharply overnight, and wet roads are expected to refreeze quickly, creating invisible black ice on key routes including I-65, I-70, and US-31.
According to the National Weather Service, a flash freeze occurs when surface temperatures drop rapidly below 32°F, freezing residual moisture almost instantly. These sudden ice patches are difficult to spot and can lead to spinouts or crashes, even at low speeds.
Experts note that on icy pavement, a vehicle traveling 35 mph may require up to 600 feet to stop — about six times the normal distance on dry roads. Motorists are urged to slow down, avoid cruise control, and maintain extra space between vehicles.
“Even when skies are clear, any leftover moisture can freeze fast,” the NWS said in a Sunday update. “Leave yourself extra time and take it slow.”
Drivers should expect slick bridges, ramps, and shaded areas through the morning hours, especially across Marion, Boone, and Johnson Counties.
