027 
fxus63 kgrb 212004 
afdgrb 


Area forecast discussion 
National Weather Service Green Bay WI 
304 PM CDT sun Mar 21 2010 


Short term...tonight and Monday 
a weak frontal boundary will push through the area tonight. Skies 
should remain clear as this boundary pushes through the region. 
The main effect of this boundary is to turn winds to the 
northeast behind it. High pressure will build into the region on 
Monday... bringing an increasing easterly flow across the region. 
Went toward the colder guidance over the north...especially in 
the typically colder locations with dry air mass in place. Across 
northeast Wisconsin...winds are expected to turn to the northeast 
overnight with a slight increase in winds from Green Bay and the 
Fox Valley east to the lake. Took a blend of the colder NAM/warmer 
mav guidance in this region. 


With increasing easterly flow on Monday...temperatures more than 
likely will not get out of the 30s near the Bay and lake. Inland... 
temperatures should warm well into the 50s across central and north 
central Wisconsin. Leaned toward the cooler NAM guidance from Green 
Bay and the Fox cities east to the lake due to easterly flow at 
the surface and cooler 925mb/850mb in this portion of the state. 


Long term...Monday night through next Sunday. Split upper flow 
will continue this week with significant systems staying to our 
south. Weak upper troughs could produce some scattered light rain 
or snow Tuesday and Thursday but nothing of consequence expected. 
The models now bring a system in the southern stream far enough 
north so that we could be on the fringe of some wet snow or rain 
Saturday and Sunday. 
&& 


Aviation...VFR conditions will continue through Tuesday. Light and 
variable winds across the region this evening will shifts to the 
northeast late tonight into Monday morning. Winds are expected to 
turn easterly on Monday with a more southeast component to the 
wind across central and north central Wisconsin. 
&& 


Grb watches/warnings/advisories... 
none. 
&& 


$$ 
Eckberg/rdm