ET on Tuesday, Sept. 23, 2025As Hurricane Gabrielle accelerates away from Bermuda, our attention turns to two tropical disturbances, tagged Invest 93L and 94L, east of the Caribbean. Red disturbance – Invest 93LInvest 93L is a large disturbance embedded in a cloud of dry air and Saharan dust, which is slowing its development. Unless something unexpected happens with the orange disturbance (Invest 94L), and it suddenly develops, the red disturbance (93L) will become Tropical Storm Humberto in a few days. Orange disturbance – Invest 94LInvest 94L is finally breaking free of the hostile upper winds emanating from Hurricane Gabrielle. The National Hurricane Center gives Invest 94L a medium chance of developing into at least a tropical depression.