One-Two Punch Plus!
Posted May 16, 2006
After a few days with showers and storms(Sunday and Monday) we saw drying take place today(Tuesday). However, over the next three days, we have three different features that will have an impact on our weather. These are not extraordinary features but features nonetheless that will have some kind of effect on our afternoons and evenings Wednesday, Thursday and Friday.
Wednesday afternoon we have a surface trough of low pressure that moves in from the northwest. This feature does not have too much moisture associated with it, but it is something that could produce a few afternoon and evening showers and storms. At this point none of the storms are expected to become severe. These will be hit and miss if not isolated, so there is a slight chance that any one area will see a shower or storm. As you can see farther upstream there is a cold front. This could have a bigger impact on Thursday if the moisture convergence is focused upon North Carolina.
Thursday afternoon and evening it appears the cold front will be crossing the state. Moisture convergence looks greater so there may be a better concentration of showers and storms across Central North Carolina and Southern Virginia. Notice far to the northwest across Illinois and Iowa another system is developing. This is Friday's system.
Friday afternoon and evening the next feature approaches. This is the area of rain we saw on that last graphic over Illinois and Iowa. This is yet another surface trough of low pressure. This is the third and final system in the series. Again like the first surface trough, the moisture will be limited so there is only a slight chance for a few showers and storms late in the day and perhaps lasting into Friday night.
This is how the next three days are shaping up in today's run of the GFS model. Keep watching WRAL-TV for the latest adjusted forecasts and of course WRAL.com.