KNWA/KFTA- Today's Weather 101 topic is all about fog, including the different types and how it develops.

Radiation fog occurs when you have a clear sky and calm winds. This combination of conditions allows the temperature to drop to the dew point to become 100% saturated due to radiational cooling. When this happens, a cloud near the ground will form. This is fog.

Advection fog occurs when warm moist air flows over a colder surface. This colder surface could be a body of water, snow accumulation covering the ground and even a swath of deep hail. As the warm air flows over a colder surface it condenses and forms a cloud.

Send us your weather questions at weather@knwa.com

UA receives grant for mitochondria study

Hispanic Heritage Month: Latinas en Bici!

Fort Smith Fall Festival 2023

Bikes, Blues, & BBQ returns to Rogers

Arkansas gets $10 million grant to improve electric grid

Equal Employment Opportunity Commission sues Walmart for sexual harassment

Community, council members react to Fayetteville’s decision to not apply for housing grant

Former Siloam Springs teacher sentenced to probation in sexual assault case

UAPD investigating rape case

Arkansas State Police investigating I-49 shooting

Fayetteville City Council votes down federal housing grant

Former Rogers coach sentenced to 57 days for sexual assault