Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 447 AM EDT Thu Jun 04 2015 Valid 12Z Thu Jun 04 2015 - 12Z Sat Jun 06 2015 ...Strong to severe thunderstorms are possible from the central Great Plains to the mid Missouri valley... ...Wet and unseasonably cool weather to continue for another day across the Mid-Atlantic states... ...Precipitation returns to northern California... Showers and thunderstorms are expected to develop later today across the central High Plains as a well-defined upper level disturbance moves out of the central Rockies. Storms developing across eastern Colorado, western Kansas and Nebraska are expected to track east, possibly becoming strong to severe, with heavy rains, as they move across the central Great Plains and into the mid Missouri valley late today into the overnight hours. By early Friday, these storms are expected to move across portions of the lower Missouri and mid Mississippi valleys and into the lower Ohio valley. By late Friday, expect storms to once again develop back across the High Plains. Across the East, a slow moving area of low pressure will offer another day of showers and thunderstorm across the Southeast and Mid-Atlantic states, with temperatures remaining well below normal across portions of the Mid-Atlantic on Thursday. This low is expected to drift east on Friday. As rain associated with this system moves out to sea, showers and thunderstorms will once again approach from the west as a cold front centered over the upper Midwest early Thursday, pushes into the Northeast and upper Ohio valley by late Friday. Across the West, an upper level low is expected to develop across California on Thursday, supporting showers and thunderstorms across northern California, the Sierra and into the northern Great Basin. As the low settles south and then turns east, scattered showers and thunderstorms can be expected across portions of the southern Great Basin, Southwest and the central and southern Rockies Thursday night into Friday. Pereira Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_wbg.php