6PM Day 1 Convective Outlook for Wednesday, February 18. THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS ACROSS THE SOUTHERN CALIFORNIA COAST
SUMMARY
Isolated strong thunderstorms will be possible across parts of coastal Southern California through tonight.
Discussion
Thunderstorm activity continues across portions of Southern California this evening as mid-level flow increases with the approaching upper-level low. Thunderstorm activity is expected to continue overnight, with potential for occasional stronger bands that may produce some instances of damaging wind. A low tornado risk was maintained with this outlook, owing to the strong deep layer flow progged to increase overnight.
High-based convection across far eastern Nebraska has showed signs of weakening over the last hour, with a downward trend in lightning. Guidance shows little in the way of additional development through the rest of the evening. The Marginal Risk across this region was removed with this outlook.