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Area forecast discussion 
National Weather Service Marquette Michigan 
425 am EDT Monday Mar 15 2010 


Discussion /today through Saturday/... 


Dry weather with above normal temperatures through 
Friday...cooling trend thereafter. Next chance for measurable 
precipitation is Saturday. 


Expect quite a bit of sunshine again today. BUFKIT profiles show 
mixing to 850mb in some areas...have adjusted highs toward 60. 
Temperatures will be cooler near Lake Superior east of Marquette where 
weak onshore flow will limit heating...aided by developing lake 
breezes. A bit cooler tomorrow...especially over the west where 
middle clouds associated with weak short wave over Minnesota arrowhead will limit 
daytime heating. At night this work week expect temperatures 
generally at to just below freezing. Not sure if Thursday will be 
as warm as previously thought...both the GFS/European model (ecmwf) cool off 
airmass temperatures a bit as warmest air remains to our south. In 
addition cloud cover during the day could limit heating 
too...though there is differing solutions west.R.T this. For now left 
daytime highs on the warm side but these may need to be trimmed 
down a bit as effects of incoming trough for Friday/Sat are being felt 
by this time. Latest GFS guidance has come into line with the ec 
for Saturday/S trough passage. This solution is more progressive 
and further south and east...typical for this winter. For Upper 
Michigan...at best...the eastern zones will see a glancing blow of 
precipitation this weekend. Cooling trend still looks on track with 
highs near normal for the weekend. 


&& 


Aviation /for the 06z tafs/... 


VFR conditions are expected to continue. Fog does not look like a 
problem anymore as both sites mixed well today with dry air able to 
overcome the snowmelt and low level moisture and this dry air will 
continue to affect the taf sites through the period. 
&& 


Marine /for the 4 am Lake Superior forecast/... 


High pressure gradually building toward Lake Superior will keep 
winds below 25 knots through at least Wednesday morning. A tightening 
gradient between high pressure sagging south and a low pressure system 
moving into Ontario will allow west-SW winds to increase to 25 knots for a 
brief time late Wednesday into Wednesday evening over western and north Central 
Lake Superior. 
&& 


MQT watches/warnings/advisories... 
Upper Michigan... 
none. 
Lake Superior... 
none. 
Lake Michigan... 
none. 
&& 


$$ 




Discussion...Pearson 
aviation...07 
marine...Voss