According to another source a tropical storm is any storm with winds of 40 to 60 miles per hour. Tsunami See article . Tsunami are not weather conditions but are included in this list of definitions for convenience. Twister Same as a tornado. The name given to storms similar to hurricanes in the western Pacific Ocean.
Typhoons occur both north and south of the equator.
Warning A warning means that the stated danger is actually occurring and you should observe the appropriate safety hints. A watch means that weather conditions are right for the formation of the stated danger. You should listen to local radio and television stations for up to date weather information, if possible using a battery operated set. Blizzards and Cold Temperatures Northern areas of the United States often experience very cold temperatures in winter. The coldest temperatures in the United States have been recorded in Alaska.