(KTRS) – GasBuddy-dot-com is warning drivers in Missouri and Illinois that gas prices are likely to spike by tomorrow morning.

Analysts say weather on the east coast is causing a shortage in oil supply. The website already shows gas prices up since this morning, but they believe gas could jump by as much as 35-cents per gallon by tomorrow morning.

GasBuddy believes that gas will stay below $2 per gallon through the fall and winter.