Drain the carb bowl into a glass container. Look for water or dirt particles.
If it's not bad, add Seafoam to the gas tank, and keep commuting.
The normal maintenance amount of Seafoam is 1 ounce per gallon. On the TW that's 2 oz per tank. On particularly gummed up carbs I have used 8 oz. per tankful with no ill effects.
It takes time/miles for the Seafoam to work.
If the problem recurs, then it may be time to clean the carb.