July 24, 2019 (San Diego's East County) -- The National Weather Service has issued a flash flooding and extreme thunderstorm warning for the southeast portions of San Diego County in effect now through 4 p.m. Locations likely to experience flooding include Alpine, I-8 Between Pine Valley And Boulevard, Lake Morena, Potrero, Campo, Pine Valley, Descanso, Tecate, Guatay and Barrett Lake.
Photo, right: Rainstorm over Boulevard, taken by Donna Tisdale this afternoon
Excessive runoff from heavy rainfall will cause flooding of small creeks and streams, country roads, farmland, and other low lying spots.
In hilly terrain there are hundreds of low water crossings which are potentially dangerous in heavy rain. Do not attempt to cross flooded roads. Find an alternate route.