Published: 2006-03-17 16:50:00
Updated: 2006-03-17 16:50:00
Posted March 17, 2006
The green displayed on the graphic below denotes the areas of rainfall expected during that time period. This display is for 7am Saturday morning. Notice no rain for North Carolina yet but that will change once we get to Monday. Notice the high pressure center that sits over central Canada. Notice the flow of air around the high. That flow extends into North Carolina. We do have dry, cold air feeding into the state over the weekend.
The surface pattern for the same time period as the graphic above shows the rain has spread into North Carolina. Notice there is no 'Parent' high pressure system sitting just to our north over New England feeding cold, dry air into the state. The high is well to the northwest sitting just north of Minnesota. It is not in the right position for us to see a sustained frozen precipitation event. If the rain arrives early enough on Monday it could begin as a mix, but the thinking now suggests an afternoon arrival which would allow surface temperatures to rise enough that this would begin and remain a cold rain.
Here is the rainfall expectancy from the Hydrometeorological Center for the time period Friday through Wednesday morning. As you can see this system has the potential to produce inches of rain where it is badly needed in the Plains and perhaps up to an inch of rain across our part of the state.