August 15th Severe Weather Outlook .. Temperatures in the severe zone will be anywhere from the 80s to the 90s .. http://www.twisterdata.com/data/models/nam/221/maps/2012/08/15/00/NAM_221_2012081500_F18_TMPF_2_M_ABOVE_GROUND.png.. Dew Points will be 60 to 70 depending on where you live..http://www.twisterdata.com/data/models/nam/221/maps/2012/08/15/00/NAM_221_2012081500_F18_DPTF_2_M_ABOVE_GROUND.png .. Convective Available Potential Energy will be anywhere from 500 to about 4000 depending on where you are located.. http://www.twisterdata.com/data/models/nam/221/maps/2012/08/15/00/NAM_221_2012081500_F24_CAPE_SURFACE.png .. Lift Index will be anywhere from 0 to negative 8 depending on where you are located .. http://www.twisterdata.com/data/models/nam/221/maps/2012/08/15/00/NAM_221_2012081500_F24_PLI_30_0_MB_ABOVE_GROUND.png .. SHEAR will be anywhere from 25 knots to 50 knots with the greatest over the Midwest area .. http://www.twisterdata.com/data/models/nam/221/maps/2012/08/15/00/NAM_221_2012081500_F24_SHRM_500_MB.png .. Its also in the above mentioned area where the Helicity is on the higher side of 300 + .. http://www.twisterdata.com/data/models/nam/221/maps/2012/08/15/00/NAM_221_2012081500_F24_HLCY_3000_M_ABOVE_GROUND_0_M_ABOVE_GROUND.png EHI is also above 1 in some of those same locales.. http://www.twisterdata.com/data/models/nam/221/maps/2012/08/15/00/NAM_221_2012081500_F21_EHI_3000_M.png ..with this in place with the Helicity we are going to put a 2-5% across the Midwest region in Wisconsin .. http://www.hpc.ncep.noaa.gov/basicwx/93fwbgus.gif Triggers will be a cold front that will be along the east coast and a cold front working its way across the Midwest from a Low pressure moving across the southern tier of Canada.
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