This will make the fuel system drop in pressure when the fuel pump is not working. (yourmechanic.com)
Ice crystals block the airflow, less heat is absorbed into the evaporator, more ice is formed, less airflow... The TXV bulb will radically drop in pressure as the evap temperature approaches freezing, and cause the TXV to completely shut off liquid refrigerant flow into the evaporator to prevent this condition. (mechanics.stackexchange.com)
Popular Science has a relatively user - friendly definition of «bomb cyclone» you can check out, but this type of weather event is essentially a super fast drop in pressure (bomb) caused by warm air meeting cold air, combined with the rotation of the Earth to create a swirling effect (cyclone). (lemonade.com)