The distinguishing feature of any tornadic activity is
A thunderstorm officially ends
While performing a radar metwatch, the operator notices a storm that...
An intense, temporary release of energy that occurs in the vicinity of...
The amount of time it takes the radar to transmit one pulse is called...
The Doppler dilemma is a tradeoff between
What is the interface called that separates interplanetary space from...
Identify the impact of electron density gradients within the...
Above 13 miles, the radiation from the sun breaks down the oxygen in...
If you throw a ball towards a stationary target from the window of a...
Who owns the Master System Control Function (MSCF) at a majority of...
Which organization serves as the DOD's sole space weather provider?
Which organization operates the worldwide Solar Electro-optical...
An unstable wave cyclone is one where the amplitude
Unstable waves are classified as
What causes the surface low to deepen during the self-development...
Where is the ideal location to look for a hook echo signature?
The line echo wave pattern (LEWP) signature should signal the radar...
How do you report prevailing visibility at US stations and overseas...
Data collected for generation of the composite reflectivity product is...
For a runway visual range (RVR) report of R22/1000V1600FT, what is the...
The stratosphere is characterized by
Which force is described as any center-seeking force?
The areas of low pressure that correspond to the belt of low pressure...
In relation to the jet core, the greatest vertical wind shear is...
Which value is considered the approximate...
What factors must a region possess in order to facilitate air mass...
An increase of mass in a column of air will cause the surface pressure...
The primary cause of surface pressure changes for a dynamic low is net
When the central pressure of an anticyclone is rising, you can infer...
How will precipitation targets appear as they move into the cone of...
With the passage of a cold front in the Northern Hemisphere, the...
What color balloon would you use to determine the ceiling heights of...
Generally, solar bursts are most common during
Which statement best describes water vapor in the atmosphere?
The driving mechanism that is mainly responsible for the earth's...
Typical ground clutter targets have spectrum width values ranging from
Which force is the "equal and opposite reaction" to the center-seeking...
It is winter. A cPk air mass is moving over the Great Lakes. In this...
Horizontal divergence within an air mass will
The damper effect is comprised of upper-level
Which bulletin, produced by Air Force Weather Agency (AFWA) Space...
In the life cycle of a low, the system will evolve into a cold...
What causes a surface high to build during the self-development...
Embedded thunderstorms are detected by the WSR–88D quite well...
The spectrum width product is useful for the early detection of...
What type of precipitation might you observe with clear skies?
Data thresholding is performed at the
Widespread low spectrum width values with isolated areas of higher...
The simplest method for locating the 500 millibar frontal zone is to
Which orographic cloud resembles an almond or a fish?
A thunderstorm is present and occurring at your station. In addition,...
For observing purposes, five hydrometers are considered to be...
Which item describes the number of cycles per a given unit of time?
How is the echo tops (ET) product very useful?
Which solar-geophysical sensor detects cosmic radio noise at a...
Once the tornado detection algorithm (TDA) has detected a tornadic...
The two atmospheric gases most responsible for the absorption of...
What air mass classification signifies an unstable, maritime tropical...
What air mass classification signifies a stable, continental polar air...
What air mass forms over land only during the summer?
A low-pressure system undergoing cyclogenesis is said to be
Superrefraction is when the curvature of the radar beam is
In regards to types of pressure systems, a heat low is a
In a cold occlusion, the coldest air is found
A change in wind direction of 45° (or more) that takes place in...
Which statement determines the length of a forecast made by the storm...
The echo tops (ET) product computes echo top height by using
The unit of measurement used to identify the strength of a magnetic...
Which electrically charged particles emitted by the sun are of primary...
Which process involves assessing, as completely as necessary, the...
Which space concept proposes ways to evaluate actual and future...
Centrifugal force (CeF) will increase when there is a decrease in
Where are the greatest velocities located in relation to the...
As air converges at the surface and toward the center of a layer,...
Anticyclogenesis typically occurs at, and just downstream from,...
Frontogenesis requires two adjacent air masses with
How does the storm cell tracking algorithm handle a storm cell...
The basic assumption of the velocity dealiasing technique is that
Another term for second-trip echoes is
The tails of comets that always point away from the sun show the...
How many degrees centigrade does the temperature decrease per 1,000...
Advection transfers temperature
Continental tropical air masses are usually associated with
After warm air with an unstable wave is pushed aloft and cuts off from...
"Clouds or obscuring phenomena that have bases at the same...
When frozen precipitation is expected, you would
Superrefraction effects the radar's displayed height values by making...
Identify what subrefraction does?
The three estimates that the hail detection algorithm provides are
Which kind of pulse repetition frequencies (PRF) are required for high...
Which atmospheric layer serves as the primary reservoir of...
Which phenomena is a dynamic and delicate visual manifestation of...
Which atmospheric layer is used by many communications systems to...
The geographic location in earth's outer atmosphere is the major...
Which process is most responsible for the slow formation of air masses...
The Space Weather Prediction Center (SWPC) receives energetic particle...
The weather characteristics of a particular month in a given locality...
Under which condition is anomalous propagation of the radar beam most...
When using Petterssen's rule, the factors needed for cyclogenesis are...
To properly report the visibility for more than one sector, you would...
You would classify precipitation as intermittent if it
When choosing an operating wavelength for a radar, it is dependent...
Radiation leaves the core of the sun as
The ability of the radar to distinguish between two targets at the...
Which solar-geophysical sensor measures the strengths and variations...
How many minutes does it take for solar flare-enhanced x-rays and...
The force that is responsible for starting the horizontal movement of...
In relation to the jet core, the greatest horizontal wind shear is...
The storm cell tracking (SCIT) algorithm can track how many individual...
The echo tops (ET) product is based on data from which other product?
Which term is used to describe transient, concentrated, localized,...
Which data collection limitation of the reflectivity cross-section...
How many stages are there in the life cycle of a low?
Which is primarily responsible for low-level divergence acting as a...
The storm cell centroid algorithm performs best when
If energy from a radar strikes a stationary target, the...
The velocity azimuth display (VAD) winds profile (VWP) provides a/an
Identify the impact of electron density gradients within the...
The temperature an air parcel would have if it were cooled...
Identify the statement that define gate-to-gate shear.
Coriolis force (CoF) is created by
Which heat transfer process involves the transfer of energy by...
When using weather radar to measure the intensity of precipitation,...
The continual, outward flow of energetic charged particles from the...
Which solar features are ribbon-like, suspended above the chromosphere...
Which term is used to describe rapid, random variation in signal...
Converging contours downstream of the jet stream will cause the jet to
How would you classify a stable air mass that formed over land in the...
A high-pressure system undergoes anticyclolysis when the clockwise...
A low dissipates after proceeding through its entire life cycle which...
The average slope of a cold front is
Outflow boundaries may be seen on the WSR–88D even when no...
Which technique does the radar uses to compare the frequency of each...
By convention, velocities toward the radar are expressed as
A strongly tilted storm may cause what kind of vertically integrated...
The spectral slope of the Doppler spectrum of a large thunderstorm...
A limitation of the storm total precipitation (STP) product is that it
Whenever the velocity azimuth display (VAD) algorithm determines that...
Base data is processed by which system?
Control of the radar product generator (RPG) is accomplished from a...
"Jet fingers"
Which bulletin, produced by Air Force Weather Agency (AFWA) Space...
In comparison to an active cold front, an inactive cold front is...
When a satellite orbiting the magnetosphere is bombarded by energetic...
Surface pressure changes are largely controlled by
In a cold occlusion, which type of front, if any, is found aloft?
Which wavelength would be best for interrogating a large thunderstorm?
The actual wind speed is determined if the flow of wind is
Which solar feature is formed by the condensation of material from the...
Which term is used to identify the area between the sun and earth?
The maximum shear associated with a tornadic vortex signature (TVS)...
How long does it take high-energy particles to reach earth after a...
As an air mass is heated from below, there will be increased
When only high and middle clouds are associated with a warm front, the
A corona is often present at night with
The temperature to which a given parcel of air must be cooled, with...
If you change the direction of current flow through a coiled wire, the...
Which type of radiation has the least application in the space...
The width of the jet stream core is approximately equal to the
The cold conveyor belt originates in the low levels that are located
Blowing spray is reported only at sea stations near large bodies of...
How long does the linear motion feature enable the radar user to...
Which layer of the sun contains one-half of the solar mass?
The overall polarity of the sun's northern and southern hemispheres...
Which statement best defines a storm cell segment?
The storm cell centroid algorithm provides a
Which product is used in the detection and location of rotating...
How does the beam width vary with the wavelength and how does it vary...
The velocity azimuth display (VAD) wind profile (VWP) displays
Which level of the ionosphere does most of the refraction of...
The balance of forces needed for gradient cyclonic circulation is...
Which statement is not a limitation of the tornadic vortex signature...
The frontolytic processes are most effective
Cirrus clouds in the form of an anvil are classified as
What is the reference level for all pressure values?
Wind observing equipment is oriented to
The hydrometeor classification (HC) product can be used to supplement...
When looking at rain/hail mix on radar, extremely low Correlation...
Which statement is correct regarding the solar cycle?
The beam width of the WSR–88D is approximately
In which layer/region of the ionosphere is the highest concentration...
Using average surface frontal slopes, how far ahead of the surface...
Air mass stability characteristics often depend on the temperature...
The DOD's sole space environmental forecast and warning facility is...
Which air mass involves most of the wintertime storms for the North...
In the chimney effect, the maximum upward vertical wind motion will be...
The difference in cloud classification between L1 and L7 is
The best way to distinguish stratocumulus from altocumulus clouds is...
Which high cloud can occasionally be so transparent that the only...
You are preparing to use a convective cloud height table to determine...
What pressure value is the basis for determining all other pressure...
In the baroclinic instability process,
Which term is used to describe solar radio emissions received on...
Which type of radiation causes ionization of upper atmospheric atoms...
Mesocyclone recognized by the Mesocylcone product when all criteria is...
With satellite communications, the severity of scintillation depends...
How can data thresholds be changed for the vertical winds profile...
Which bulletin, produced by Air Force Weather Agency (AFWA) Space...
Observation of the photosphere is made by photographic techniques or...