Note that lightning and heavy rain ARE not more about lightning and flash flooding in an upcoming blog update.elements of a severe thunderstorm, nonetheless lightning and potentially very heavy rains caused by a thunderstorm that can lead to flash flooding, are a thunderstorms two greatest producers of fatalities. I will talk
What is a Severe Thunderstorm or Tornado WATCH?
A Severe Thunderstorm Watch outlines an area where an organized episode of hail 1 inch diameter or larger and/or damaging thunderstorm winds are expected during a three to eight hour period. A Tornado Watch includes the large hail and damaging wind threats, as well as the possibility of multiple tornadoes. Typical watches cover about 25,000 square miles, or about half the size of Iowa. [from the Storm Prediction Center (SPC)]
What is a Severe Thunderstorm or Tornado Warning?
A warning means that severe weather has been observed, or is expected soon. That is reports of damage, large hail or a tornado has been sighted on the ground or indicated by radar.