A severe thunderstorm watch has been issued for areas north of the Ohio River (not Louisville) until 7am edt.
http://w1.spc.woc.noaa.gov/products/watch/ww0484.html
Saturday, June 20, 2009
Tuesday, June 16, 2009
The Heat Is On The Way...
The hot weather across the central and southern U.S. will expand into the Ohio Valley the next 3 days. Temperatures should climb close to 90 on Wednesday and WELL into the 90s Thursday and Friday.
As for storm chances... It looks like scattered storms will once again be possible Wednesday especially for areas south of Louisville where atmospheric moisture will be a little deeper (i.e. H7 moisture on the order of 50 to 70% south of Louisville). Instability is expected to be quite high and 0 to 6 k shear values on the order of 30 to 40kts. Bottom line, storms that form and are able to tap the higher instability could be severe with mostly and wind / hail threat.
After a couple of hot days - Thursday and Friday, an approaching H5 short and its associated sfc cold front will sweep the area Friday night. Storms are expected with this system Friday night but drier air will build in for the weekend resulting in nice weather for both Saturday and Sunday.
Jay
As for storm chances... It looks like scattered storms will once again be possible Wednesday especially for areas south of Louisville where atmospheric moisture will be a little deeper (i.e. H7 moisture on the order of 50 to 70% south of Louisville). Instability is expected to be quite high and 0 to 6 k shear values on the order of 30 to 40kts. Bottom line, storms that form and are able to tap the higher instability could be severe with mostly and wind / hail threat.
After a couple of hot days - Thursday and Friday, an approaching H5 short and its associated sfc cold front will sweep the area Friday night. Storms are expected with this system Friday night but drier air will build in for the weekend resulting in nice weather for both Saturday and Sunday.
Jay
Monday, June 15, 2009
Unsettled ... Then Heatin' Up
A frontal boundary will shift slowly north through the Ohio Valley the next couple of days. This combined with weak upper disturbances passing through the jet stream produce several waves of showers and storms across the central U.S. an well as the Ohio and Tennessee Valleys. 
A few of the storms could be severe on Tuesday with the primary threats being hail and high winds.
Here's the latest Day 2 svr outlook....
By Thursday, upper ridging will really start building into the Ohio Valley. This will effectively push the front and rain chances well north leaving us with hot and mainly dry conditions for the end of the work week.
we'll keep you posted
Jay
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