Increasing moisture and instability over the Eastern Interior will bring heavy rain showers and widely scattered thunderstorms through Monday. The atmosphere over the holiday weekend will be more typical of late July than the end of May. Storms that do form today will not move quickly and may be nearly stationary, which will allow them to drop abundant rainfall over small areas. Not all areas will see rainfall, but creeks and streams near areas that do see heavy rain may rise rapidly, especially in steep terrain. By Monday, the bigger threat from these thunderstorms will be strong outflow winds, abundant lightning, and small hail. It is possible that the heaviest rain will fall along the Alaska Highway between Delta Junction and Tok on Sunday night into Monday morning. Rising freezing levels on Sunday will allow snowmelt from high terrain above Cathedral Rapids and Sheep Creek along the Alaska Highway to add to rainfall in those streams. This may cause very high water in these streams along the Alaska Highway. Recreators should be alert for areas of heavy rainfall, lightning, and for rapidly rising creeks and streams.
