Jersey Met is warning heavy, persistent rain could lead to flash flooding.
The island will be hit by downpours early in the afternoon on Saturday (7 September), although the bulk of the rain is likely to fall at night, continuing into Sunday (8 September).
Islanders are being warned about the possibility of 'localised' flash flooding.
Government of Jersey:
"The exact location of the heaviest rain is uncertain, but it will be over or close to the Channel Islands."
The government has been preparing for the weather by clearing drains.
People worried about the flooding can visit the government website for more information on how to prepare, cope and clean up.

Five Jersey residents on New Year Honours List
All-Jersey cast and chorus take to The Opera House stage
Trekkers raise £25K for Dementia Jersey
Alleged road rage assault on Christmas Eve
Jersey's first Christmas Tractor Run raises more than £10k
Finish line looms for school's Advent Challenge
£1 million into Jersey sport in 2026
Channel Islands could technically have a White Christmas