Highlight: Storm-driven cooler Dec. 14-20. Midday 12Z GFS… Days 6-10: Cooler Kansas; marginally warmer East. Days 11-15: Cooler East; warmer West. Dates HDD forecast 12-hr change 48 hours ago NOAA Nml Nov 30-Dec 6 171.2 +0.1 172.3 178 Dec 7-13 196.3 -0.2 204.5 192 Dec 14-20 194.4 +19.4 169.6 204 Table 1: CWG tabulates the 12Z GFS OP gas population weight HDD. Storms… The southern U.S. storm through the weekend into early next week moves right along…there is no blocking high pressure pattern to the north to slow it down. Therefore…rapidly off the Southeast/Carolina Coast rather than turning toward the Mid-Atlantic/Northeast Coast. Storm most potent near and west of Houston area Friday night/early Saturday where heavy rain/flash flooding is likely. Moderate to heavy ice event northwest Texas through north-central Oklahoma and northern Arkansas to the eastern Tennessee valley and southwest Carolinas. Heaviest snow western Carolinas to the VA/NC state line. Another storm late next week/weekend Texas to the East Coast.