MiddayWeatherBrief 10/28/11: Grappling With Graupel
We’ve had numerous reports of ice pellets falling with the rain this morning over Southern Kentucky. Further east, there have even been reports of a few wet snowflakes mixed in.
It’s all because of what we call “supercooled” air. The shield of rain moved in this morning after temperatures had cooled another 10-15 degrees over Thursday’s readings. While temps at the surface are well above freezing, you only had to go about 8-10,000 feet above us to find temperature levels at 32° and colder. This is what caused a few of the ice pellets…or graupel to mix in with the rain over parts of the area (read my previous post on this subject).
For the rest of the afternoon, the rainy weather will be east of I-65 affecting the Lake Cumberland, Dale Hollow Lake and Green River Lake regions.
West of I-65, we’re already seeing an end to the precipitation and even a few breaks in the clouds. However, any sunshine looks to be limited until we begin to see the clearing line move further east which will take a good part of the afternoon. Those in Western Kentucky and near the Land Between The Lakes may begin to see some filtered sunshine in the next couple of hours.
Patchy frost is likely area wide tonight as a clearing sky, calm wind and temperatures in the 30s will set us up for a frosty start to our Saturday.
Shane will have more on your weekend forecast tonight at 5, 6 and 10pm, on-line at WBKO.com/weather and ToGo on your mobile device.