Southern California could feel more like Florida the rest of this week, forecasters said, as moisture from a dissipated tropical storm in the eastern Pacific shifts north, boosting humidity and the chance for unstable weather — including flash floods — in the region.

“The next several days, we’re getting the remnants of the energy from Tropical Storm Mario,” said Rich Thompson, a National Weather Service meteorologist in Oxnard. “It’s giving us this threat of thunderstorms.”

Those storms could create fires from dry-lightning strikes or flash floods and debris flows depending on how strong they turn out to be, the National Weather Service warned. The weather service has issued a widespread flood watch for much of inland Southern and Central California, as well as the Santa Monica Mountains, from Thursday morning until Friday morning, warning that excessive rainfall “may result in the flooding of rivers, creeks, streams and other low-lying and flood-prone locations.”

Most of Los Angeles and Ventura counties are expected to get a half-inch of rain between Wednesday and Friday, with mountain areas seeing around an inch at most, according to the National Weather Service. But some areas could get as much as two inches of rain locally, with some dangerous rainfall rates possible.

Forecasters said flash flooding would be possible when rainfall rates exceed half an inch per hour.

Localized flooding and debris flows are most likely on Thursday, and those stronger storms could also bring some powerful isolated winds.

On Wednesday morning, forecasters were already tracking storms that were moving across the San Luis Obispo County coast and onshore, bringing mostly dry lightning. The system had moved over the footprint of the Gifford fire, the state’s largest this year at 131,000 acres. While the fire that ignited in August is now considered 98% contained, forecasters said the dry lightning strikes “will be a main concern.”

Dry lightning was primarily considered a threat Wednesday, though it’s not out of the question the rest of the week. The forecast storms are likely to include more moisture Thursday and Friday as they become more widespread, affecting “pretty much anywhere in Southern California,” Thompson said.

But mostly, the weather pattern will make it feel “warm and muggy” across the Southland, more akin to Florida weather — though not quite as hot or humid as you might feel in Orlando or Miami, Thompson said.

“It’s just going to be a bit more uncomfortable with that extra humidity moving in,” he said.

But Friday may not be the end of it. Kristan Lund, a meteorologist with the National Weather Service’s Oxnard office, said another tropical system is brewing off Mexico’s west coast, which could bring renewed wet weather to California on Sunday and Monday.

This system could bring “another tropical storm surge,” Lund said.