4pm, Wednesday, July 23, 2008
From FOX 6 Chief Meteorologist Vince Condella
What a terrific day in southeast WI. And another great night ahead in the weather as skies remain clear and dewpoints in the comfortable 50s. Winds will be light or go calm.
Thursday looking good as dry layers at low and mid levels will help keep away any surface moisture. We should see an increase in high clouds during the day, so filtered sunshine, but still a nice day with dewpoints climbing into the upper 50s - comfortable.
The numerical prediction models showing the main batch of thunderstorms to pass to our south Thursday and Thursday evening, although our RPM model (SkyVision Plus) indicating that we will get clipped by an area of showers after midnight. Should just be a glancing blow.
The main wave at upper levels is still off to our northwest on Friday, and dewpoint levels should jump into the low 60s. It is possible we could pop a few scattered showers or thunderstorms Friday afternoon, but a better chance Friday evening and overnight.
Then the question about Saturday: I will change the mostly sunny forecast and bring in a chance for scattered showers. Upper level flow showing diffluence aloft, cyclonic curvature still present at 850mb (approx. 4,000 feet above the ground), and vorticity (spin) max. rotating over WI during the day. It all adds up to one of those days with possible scattered showers, plus a fair amount of sunshine.
Sunday through Tuesday looks good with a lot of sunshine, surface high pressure, and weak flow aloft. Low dewpoints in the 50s, too.
Tonight: Clear
Low: 55 - 60
Dewpoint in the 50s
Light Wind
Thursday: Partly Sunny - increasing high clouds - Filtered Sunshine
High: 82 inland, 73 lakeside
Dewpoint around 60
Wind: SE-S 10-18mph
Thursday Night: Partly to Mostly Cloudy
A Few Showers After Midnight
Low around 65
Dewpoint near 60
Wind: SW 5-10mph
Friday: Partly Sunny and a Bit Muggy
A Few Scattered Showers or Thunderstorms in the Afternoon
High around 85
Dewpoint in the low to mid 60s
Wind: S-SW 10-20mph
Friday Night: Showers and Thunderstorms
Low near 68
Dewpoint in the low to mid 60s
Wind: SW 10-20mph
Saturday: Partly Sunny and Breezy
Widely Scattered Showers
High around 80
Dewpoint: 55 - 60
Wind: NW 12-22mph
Saturday Night: Early Evening Scattered Showers
Then Clearing
Low near 62
Dewpoint in the 50s
Wind Becoming Light
Sunday and Monday: Sunny
Morning Lows around 60
Afternoon Highs near 80 but cooler lakeside
Dewpoint in the 50s
Tuesday: Partly Sunny
Morning Low: 62
Aftenoon High: 83
Dewpoint around 60