Severe Geomagnetic Storm Alert
Severe, stern, austere, ascetic mean given to or marked by strict discipline and firm restraint. Severe implies standards enforced without indulgence or laxity and may suggest harshness. Severe adjective (very serious) add to word list causing great pain, difficulty, damage, etc.;
See examples of severe used in a sentence. Severe implies adherence to rigorous standards or high principles and often suggests harshness: Severe generally refers to something very great or intense, such as extreme pain or weather conditions.
Definition of severe adjective in oxford advanced learner's dictionary. Severe punishments or criticisms are very strong or harsh. This was a dreadful crime and a severe sentence is necessary.