Natural Disasters Flashcards
Natural disasters can occur ?
Anytime
Most major disasters in the U.S result from ?
Severe Winter Storms
Common Feature of winter storms ?
Their ability to completely immobilize large areas and to isolate and kill persons and livestockin their paths.
Since 1936, snow storms have caused directly and indirectly how many deaths a year ?
100
and 200 is not uncommon
what fracture of the deaths from a winter storm are automobile and other accidents ?
1/3
and another 1/3 for overexertion and exhaustion with cosequent fatal heart attack.
Watch
alerts the public that a storm has formed and is approaching the area.
Warning
means that a storm is imminent and immediate action should be taken to protect life and property.
Freezing Rain or frezzing drizzle
is rain or drizzle occuring when surface temperature are below freezing.
what % of ice storm deaths are traffic related ?
85%
Sleet (frozen rain drops)
ice pellets that bounce when hitting the ground or other objects.
the terms ice, freezing rain, and drizzle warn the public of what?
that a coating of ice is expected on the ground and on other objects that are exposed.
Heavy snow warnings are issued when ?
when a fall of 4 inches or more is expected in a 12 hour period.
In areas that normaly dont get a lot of snow. A warning could possibly given out when ?
2 to 3 inches
Snow Flurries
Snow falling for a short duration at intermittent periods however snowfall blow about that horizontal visibilty is greatly restricted.
Drifting Snow
is snow