Ok as long as….
You have enough fuel on board to divert or hold as required. Enough charts and airfield information to divert and know what’s there. Enough time before dark or other factors to get somewhere safely.
The storm cells yesterday were less of a problem because you could see them. It gets more difficult when the cells are embedded in the general clag. Knowing which way the cells are actually moving is useful. A large and active cell that passed over Headcorn yesterday laid down a white carpet (of hail) a couple of miles wide across the southeast. It made it relatively easy to see the direction of travel of the cell.