Wednesday, July 7, 2010

Less humid conditions on the way!

One more day of hot sticky, humid, muggy air to deal with before a much needed break tomorrow through Friday... Then more humid conditions return the the FA for this weekend...


***CURRENT CONDITIONS***

At 9 AM SFC OBS showing temps in the middle 70s, cooler up around Lake Superior... Dewpoints are in the lower to middle 60s under sunny to mostly sunny skies.. Winds are calm to around 5 MPH...

***FORECAST DISCUSSION***

A week area of low pressure is forecasted to take shape over IA this morning.. 1014 or so MBS... This low is then forecasted to lift into the FA later this afternoon/into the over night hrs.. Cold front out over MN is also forecasted to move Eastwards as we head through the day into the evening.... Moisture is streaming into the area... Though dewpoints are some what lower this morning... Nevertheless it will remain a muggy day... Cape does increase to around 1500 J/KG to 2000 J/KG....LIS range from -2c to almost -4c later this afternoon and through out the evening... Dewpoints forecasted to in the upper 60s to lower 70s once again.... Now time to talk about severe thunderstorms chances... As of right now this looks to be very low if not null.... Despite we have some of the dynamics in place, however looking at the Skews we find little support in the middle to upper levels... Not much shear as of right now...This still could change as we head through this afternoon... Nevertheless showers and thunderstorms are forecasted to form out over Central/Eastern MN and then push Eastwards... Would appear as of right now a line of thunderstorms will take shape...This may lead to marginal wind threat.... So we can't rule out gusty/damaging wind threat... May also see some hail from the stronger cells/updrafts...Overall though the severe weather threat is very low.... If this does change this will be updated.... Cold front clears the area latter tonight...Dewpoints will take a hit as drier air pushes in the area...Will keep temps in the upper 70s to lower 80s through the rest of the week into the weekend... Dewpoints slowly make their climb back into the 60s by Sunday....