Wednesday, January 21, 2009

Modified Airmass


The graphic to the left shows the current snowpack across the Midwest. Snow is still fairly thick as far south as a line between Burlington, IA and Springfield, IL. Today's southwest winds are pretty light between 5-15 mph, but it is enough to kick start a warming trend. If this pile of snow wasn't here this warmer airmass would be able to send us above the freezing mark today and into the 40s tomorrow. Unfortunately, this airmass is being modified a bit as the southwesterly winds move over the snow and cool off. The map of current temperatures directly correlates to the current snowpack. As of 11am, readings were in the mid 30s in Quincy & St. Louis, but in the Forest City we've barely made it into the low 20s. In conclusion, the warming trend for today and tomorrow is a bit subdued. Highs today will be near normal with slightly warmer than average conditions Thursday. -ADAM

2 comments:

Anonymous said...

I was on a conference call with people from all over the Midwest yesterday. The guy from SD said it was 55 degrees there.

Was he kidding? Why aren't we getting that?

Adam Painter said...

That guy is not pulling your chain. The 11am MST observation in Rapid City, SD reports 53°. There are numerous reasons we aren't getting that. They are closer to the Chinook winds off of the Rocky Mountains, they are sitting under a huge ridge in the jet stream, and they have no snowpack. All conditions that we are not currently experiencing and won't see anytime soon.