Gulfstream Park has a ten-race card scheduled for Friday with a first post of 2:00 p.m.
The Weather Channel forecast is for a 35 percent chance of thunderstorms during racing hours at rhe Hallandale Beach, Fla., track.
Friday's big attraction will be the Rainbow 6, on which the carryover has grown to $617,738.
The 20-cent per combination only bet will be on races five through ten with the sequence scheduled to start at 3:58 p.m.
On Thursday there were 33 tickets with the winners of all six Rainbow 6 races. Each was paid $1,505.18 on the 20-cent bet.
It was the 23rd straight race day without the jackpot payoff requirement of just one ticket with all six Rainbow 6 winners.
The jackpot consists of the entire carryover plus 80 percent of the days new Rainbow 6 wagers.
On days with multiple winning tickets,, such as Thursday, Gulfstream takes out 20 percent of the day's Rainbow 6 wager. It then divides 56 percent among winning tickets and adds 24 percent to the carryover.
On Thursday, $87,366 was bet on the Rainbow 6.
Program numbers of the winning horses were 2-5-7-5-6-1.
All five of Thursday's scheduled-for-turf races were run on that surface.
On seven of this month's nine race day,s Gulfstream has moved two or more races from turf to dirt because of raim or lingering wet conditions