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Tropics

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Tropical trouble is brewing off the South Carolina coastline as thunderstorms organize around a developing low pressure. The system could produce torrential rainfall for the East Coast, with particular focus over the Northeast. Invest 98L, the low pressure system that the National Hurricane Center has given a 70% chance of becoming a tropical depression by Friday, only just crossed into the ocean Wednesday morning. With balmy sea-surface temperatures (SSTs) in the low-mid 80s°F (upper 20s°C) off the Carolina coastline, the developing low has plenty of fuel to intensify into a Tropical Depression or possibly, Tropical Storm. However, it will only have a brief window to reach Tropical Storm intensity. The low is expected to reach the Delmarva coast Thursday evening, where SSTs are in the mid-70s°F (mid 20s°C). These temperatures are too cool to sustain tropical cyclone growth. Contoured Sea Surface Temperature (SST) Map as observed by a global ensemble…