Today is another travel day for us. We made it past Rolla and into the small town of St. Robert, MO, last night. We drove through rain off and on the entire trip, and I was constantly adjusting my wiper speed. There was also dense fog along the entire route as well.
This morning, I got up before sunrise and went for a jog. It was cool, foggy and damp, with a slight breeze as well. The damp and the breeze made it feel quite cold on my morning jog. Here is a photo from my hotel window at the Quality Inn in St. Robert, MO, this morning:
The National Weather Service offices show overcast skies, still winds, patchy drizzle, dense fog and cool temperatures this morning in St. Roberts. The temperature will drop throughout the day, and the winds will increase, clearing away the fog. By the time we reach Oklahoma City, winds will be gusting into the 20’s and wind chill will become a factor.
The satellite imagery shows another day of overcast skies along our entire route:
Also, the Storm Prediction Center (SPC) Mesoscale Analysis Graphics show that the boundary layer is saturated along our route. Notice how the dewpoint and temperature were the same for many stations in Missouri this morning.
The Pressure Chart shows that there is a strong pressure gradient over my travel route today. The RAP shows that this will persist for at least the next six hours (and will likely extend into the night, according to the NAM). This gradient exists because of high pressure over Montana and low pressure over the Midwest.
The NAM shows a large, fat trough dipping south, with a strong jet streak through Kansas at the 300 mb level by this afternoon. This trough is the driving force for the cold blast of air we’ll see this evening.
The 850 mb level NAM shows strong Cold Air Advection (CAA) paralleling our travel route all day. Notice how the winds blow directly across the thermal gradient from cold to warm. Temperatures will drop later this evening.
The NAM Precipitation chart shows that we will likely run in and out of rain again today, with precipitation expected along our entire route.
I think we will have wet travels today, but, thankfully, no winter weather. I’m not looking forward to the wind chill figures in Oklahoma City tonight, however.
Thank you for reading my post.