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DSM Exam 1
Terms in this set (95)
Pressure Gradient Force
What does PGF stand for?
Anvil to Ground Lightning
Which lightning has a positive charge?
the body's perception of cold temperature when exposed to wind.
The wind chill temperature index reflects...
warm air parcels become unstable and rise
Where warm air and cold air masses meet, the less dense warm air flows over the cold air
A moving air parcel meets a mountain range, which forces it to rise.
Where surface winds converge, they rise
What can be described as perfect?
cumulus stage, mature stage, dissipating stage
Correct order of life cycle stages of a thunderstorm
A type of multi-cell thunderstorm, where the storms become organized into a line. This typically occurs along the leading edge of a cold front.
MPH for a EF-5 tornado
What is the common "nickname" given to the region with the highest tornado strikes in the United States?
T/F: Air pressure decreases with increasing altitude (height in the atmosphere).
T/F: The deflection of the coriolis force causes air around a high pressure system to move clockwise direction and around a low pressure system counter-clockwise direction in the northern hemisphere.
Most lightning fatalities occur during what type of activity?
What hazard caused the crash of the DELTA L1011 aircraft at the Dallas/Fort Worth airport in 1985?
1993 Blizzard (Storm of the Century)
What event caused ALL major airports along the U.S. east coast to be closed for the first time ever?
SKYWARN (not SKYREADY) also (not SKYEDDY)
Network of storm chasers
-Local tissue damage caused by actual tissue freezing
-Most likely to happen in body parts fastest from the heart and those with large exposed areas.
_________ occurs when the body loses heat faster than it can replenish it resulting in a drop of the body's core temperature
1. Tropical Wave
2. Tropical Depression
3. Tropical Storm
4. Hurricane (omg I could go for some Canes rn mmm chicken)
What are the stages of hurricane development?
Cat 5 greater than or equal to 157
Winds of a Category 5 Hurricane
Where in a hurricane do the strongest winds tend to occur?
What wind speeds will you experience in the left-rear quadrant of a hurricane with sustained winds of 125 mph and a forward motion of 15 mph?
What wind speeds will you experience in the right-front quadrant of a hurricane with sustained winds of 130 mph and a forward motion of 10 mph?
June 1-November 30
When is the North Atlantic hurricane season?
Hint: B SAS(sy)
What instruments/tools are used for hurricane observation?
Which quadrant of the hurricane is the most dangerous to be located in?
Hurricane air spirals in toward the center in a________ pattern in the northern hemisphere (clockwise in the southern hemisphere), and out the top in the opposite direction
Which storm was the costliest hurricane in U.S. history?
Who is the rapper on A Bay Bay?
1900 Galveston Island Hurricane
Which was the deadliest storm in U.S. history?
Galveston (know Galveston was elevated)
During the storm, _______ experienced a storm surge of about 15 ft - remember average ELEVATION of the island was about 5 ft at that time.
-There was no ability to monitor storms at that time (i.e., residents not aware that a storm was
-The barrier island was only 5 feet above sea level (i.e., no protection from storm surge).
-There was no sea wall to protect residents from storm surge.
-It was a densely populated area (i.e., many people and assets in harm's way)
Why was the 1900 hurricane affecting Galveston Island, Texas so disastrous in its impact?
one of only three category 5 hurricanes to make U.S. landfall.
The 1935 Labor Day Hurricane is of significance because it is ______________.
Which U.S. regions are at risk from hurricanes?
Best Building practices
After Hurricane Andrew (1992), the State of Florida improved what aspect of hurricane preparedness, in which it leads the Nation today?
T/F: After the 1900 hurricane, the entire Galveston Island was elevated by 17 feet to reduce the city's vulnerability to storm surge.
T/F: Most of the deaths (i.e., World War I veterans) from the 1935 Labor Day Hurricane occurred because they were not evacuated in a timely fashion and had no proper shelter to seek refuge from the storm.
T/F: The damage along the Mississippi coast was mostly caused by the direct impact of storm surge associated with Hurricane Katrina.
The world's deadliest tropical cyclone occurred during the Great Bhola Cyclone of 1970, where it is estimated that more than 500,000 people were lost.
West Bengal/Bangladesh (500,000 deaths)
Deadliest Hurricane/Tropical Cyclone
The gauged height of the water level in a river
Flood is possible.
Flood is occurring or will occur soon.
Flash Flood Watch
Flash flooding is possible.
Flash Flood Warning
Flash flooding is occurring.
A flood with a 0.1% annual chance of occurrence is also called a ________?
1% annual chance of recurrence (More severe floods will have a much higher interval like 100 years )
Chance of 100-year flood
A river with multiple channels is called a________
Similar to braided rivers, Both consist of multiple interweaving channels, but _______ rivers typically consist of a network of low-gradient, narrow, deep channels with stable banks
A chart that illustrates discharge of a river over time at a specific location along the river.
T/F: A flood is the overflow of water onto land that is normally dry.
T/F: People who live in a designated floodplain are required to have flood insurance.
Flood Control Act
What policy act was implemented after The 1927 Mississippi River Flood?
1993 Midwest Floods
Which flood event is known as the largest and most significant in U.S. history?
dark blue to black
What color(s) represent flood areas on the satellite image shown for the 1993 Midwest Flood?
In which country did the world's worst dam disaster occur?
Faulty engineering led to the dam failure.
What was the key reason for the failure of the Vaiont Dam?
"I'm too hot, hot _____" -Bruno Mars
The county installed a reverse 911 emergency home system.
What did Larimer County implement after the Big Thompson Creek tragedy?
24 counties in Texas, all counties in Oklahoma
How many counties in Texas were classified by the governor with a "disaster declaration" as a result of the 2015 Texas/Oklahoma Flooding?
T/F: The U.S. Army Corps of Engineers is responsible for the maintenance of both federal and non-federal levees.
T/F: A homeowner who decides to live beside a levee system is required by law to purchase flood insurance.
Coriolis Force: In the northern hemisphere, the PGF is deflected to the____ of its projected path and in the southern hemisphere the PGF is deflected to the____ of its projected path.
Winter storm associated with heavy snowfall and strong winds
- Winds > 35 mph
- Blowing snow
- Visibility < 500 ft.
- Duration > 3 hrs.
4 classifications of a blizzard
temperature and wind
2 variables for measuring wind chill index
The ______ tornado year had lower number of reports than previous 10 years.
What does Northwestern Pacific call hurricanes?
1. Warm water
2. Unstable parcel of air (i.e. upward lifting of cooling air)
3. Little or no wind sheer (weak upper-level winds)
Three basic conditions needed for a tropical cyclone to form
Which hazard does NOT occur in association with a hurricane?
Hazards associated with tropical cyclones (hurricanes)
The speed at which water moves through a channel at a given point. The rate of water flow is measured in feet per second
First Order Streams
______ streams do not have tributaries and their headwaters are usually the highest point of elevation of flowing water.
A numerical system used to rank stream size based on the number of tributaries flowing into a stream
"Genovian Order of the Rose"
Speaking of Orders, what "Order" did Queen Clarisse Renaldi appoint to the police officer and trolly driver to get Princess Mia out of trouble?
The most common drainage pattern is ___________, in which the pattern of the streams resembles the branches of a tree.
Which type of river has large amounts of sediment build up?
type of flood, caused by high or overflowing water from a river; snowmelt
Dam and Levee Failure
type of flood, poor construction, lack of maintenance
type of floods that occur suddenly and rapidly, result from the balance of rainfall and infiltration
type of flood, storm surge from hurricanes, tsunami
In the United States, around 200 people die annually from flooding. The majority of those deaths occur from which type of flooding event?
Storm surge, ice-jam, riverine
Which type(s) of flooding has (have) a seasonality to it?
Flash floods, Levee Failure
In today's world, which type(s) of flooding can occur rapidly and without warning?
Urbanizations, Agriculture, Forestry, Flood Control
4 Human Influences on Flooding
Amount of rainfall
Which of the following geographic and atmospheric conditions can influence flooding?
The federal government offered "buyouts" to many homeowners.
Which non-structural mitigation measure was widely employed after the 1993 Midwest Flood
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