Quiz 4 Flashcards
Most non-sever thunderstorms only last 20 to 30 minutes and begin to dissipate when…
The down draft spreads throughout the cloud and cuts of the updraft
How many tornadoes does the state of Oklahoma see on average each year
52
True or false
A funnel cloud usually contains dirt and debris after it has made contact with the ground.
False
The #1 weather related killer in the U.S. is what?
Flooding
A line of thunderstorms is called what?
A squall line
Lightning discharges within a cloud occur _____ than cloud-to-ground lightning
More frequently
A rotating thunderstorm is called a what?
Mesocyclone
Which nation has more tornadoes than any other country on the world?
The United States
What city would you expect to find the best chances of having a tornado in February?
Biloxi, Texas
What instrument uses a radiowave reflected by precipitation to measure the speed at which precipitation is moving toward or away from an observer.
Doppler radar
What is the measure of hurricane strength based on hurricane winds and central pressure?
Saffir-Simpson scale
Storms that form in the tropics are given a name when they reach what?
The tropical storm strength
The term storm surge refers to what?
The rise in ocean level of several meters or more.
Most of the destruction caused by a hurricane is due to what?
Flooding
Which quadrant of a forward advancing hurricane is the most likely place to produce tornadoes?
Right-front quadrant
The developing stages of a hurricane are what in order of first to last…
- Tropical disturbance
- Tropical depression
- Tropical storm
- Hurricane
The strongest winds and tallest storms are found in which part of the hurricane?
Eye wall
The vertical structure of a hurricane shows an upper-level ______ of air! and a surface _______ of air.
Outflow, inflow
True or false
A thunderstorm is considered sever if the winds reach 45 mph and pea sized hail covers the ground.
False
The main source of energy for a hurricane is what?
Warm ocean water and release of latent heat energy by condensation
Just as important as a smoke detector in your home when it comes to sever weather information what device should you have?
NOAA weather radio
The probability forecast that calls for 14% cance of rain means what?
The is a 40% chance that any random place in the forecast area will receive measurable rain
One should take cover immediately in their predetermined safe-spot of your home when what type of advisory is issued?
Tornado warning
The most active time or season for sever weather in Oklahoma is during when?
Mid march to mid June
Which month is usually the active tornado month in Oklahoma seeing an average of how many tornadoes?
May, 18
True or false
Lightning is a requirement to have thunder.
True
Weather forecast that predicts that the future weather will be the same as the present weather is called what?
Persistence forecast
The forecasting of weather by a computer is known as what?
Numerical weather prediction
A prof is what?
A forecast chart that shows the atmosphere at some future time.
An analysis is what?
A surface or upper level chart that interprets the present weather patterns.
