Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 252 PM EDT Sun Apr 21 2019 Valid 00Z Mon Apr 22 2019 - 00Z Wed Apr 24 2019 ...Locally heavy rainfall possible across parts of the northwestern Great Lakes as well as the Southern Plains... ...Severe thunderstorms possible across the Texas panhandle Monday... ...Well below average temperatures from eastern Colorado to the Upper Peninsula of Michigan tomorrow... A frontal system will slowly sink through the Rockies today and tomorrow with mostly rain but locally heavy mountain snow. Much colder temperatures are forecast for the foothills into the plains of Colorado tomorrow (about 25 degrees colder than Sunday) northeastward to Minnesota and Wisconsin behind the front. As it continues southward into the Oklahoma and Texas Panhandles, severe storms will be possible on Monday. The Storm Prediction Center outlined a Slight Risk area around Lubbock. Heavy rain may accompany these storms. Along the boundary to the northeast, rainfall may be enhanced across parts of Wisconsin and into the Upper Peninsula of Michigan as well, where present snow cover coupled with modest rainfall could lead to some flooding. Temperatures to the south and east of the front will be above normal by about 10-15 degrees over the mid-Mississippi Valley into lower Michigan. In the east, the frontal system that moved mostly offshore will invigorate a trailing system later today that will spin up another area of low pressure off the Mid-Atlantic coast tonight. That surface low will lift northward toward southeastern New England tomorrow and bring a chance of more scattered showers to the area. Though amounts will generally be light, any additional rainfall could exacerbate ongoing flooding in Maine due to snowmelt combined with the rainfall. Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Fracasso Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php