An Isobar is a line drawn on a weather map or chart that connects points at which the barometric pressure is the same. This aids in a visual depictions of the position of high and low pressure centers. Close spacing of isobars would mean that the pressure gradient force of air would be greater, and in simple terms, there would be stronger winds around the area.
The use of wind barbs show both wind direction and speed. Think of them as arrows in terms of direction, which each barb (pennant) at the tail representing speed. … A full blacked pennant or triangle is 50 knots of speed. A full line on the wind barb is 10 knots of speed. One knot equals 1.15mph.
Below is the isobar and wind barb map for today through this weekend. (click to enlarge).
We have a strong storm system moving in for the weekend which may move right over the state bringing another mixed bag of precipitation, however our main concern will be the winds on Sunday which could be in the 45 to 50mph range with lake effect snows being blown around after the passage of the storm. Sorry to say this may usher in cold air for the rest of the month into March with another system coming in on Tuesday refreshing our snow cover. We will be tracking these and have more details tomorrow and Sunday, and of course from our bloggers here.
1,051 total views, 2 views today