Fronts
Severe weather
Clouds
Fair or poor weather conditions
100
This is the symbol and the weather associated with the cold front.
Double
Poor weather conditions-storms, rain
100
This is released in the event that conditions are favorable for severe weather.
triple
watch
100
This cloud type is formed high in the atmosphere.
cirrus
100
Sky becomes dark
Cumulus clouds dot across the sky
Fog in the morning
Double
poor
fair
fair
200
This is the symbol and definition of an occluded front.
A front in which two overlapping air masses are moving in the same direction. 
200
This is the missing step in the progression of a hurricane:
1. Tropical disturbance
2.
3. Tropical storm
4. Hurricane
Tropical depression
200
This is the cloud that is puffy like cotton.
double
cumulus
200
Clouds lower and thicken
Red sky in the morning
Gentle wind
poor
poor
fair
300
This is the symbol and associated weather for a warm front.
Warm fronts bring warmer air and fair weather conditions
300
Hurricanes are assigned categories based on this factor.
wind speed
300
This is the type that blankets the sky .
stratus
300
High pressure
Cold front
Communications interrupted
fair
poor
poor
400
This is the symbol and definition of stationary fronts.
A front in which two air masses meet and are moving in opposite directions causing a stall in motion. 
400
This is released in the event that a storm is actively in progress.
warning
400
This prefix is used when a cloud becomes a storm cloud.
nimbus
400
spike in temperature during the summer
high humidity
gray sky in the morning with signs of blue sky
poor
poor
fair
500
The triangles or circles on a front symbol represent this.
direction of motion
500
This is a scale used to measure the intensity of tornadoes.
Fujita
500
When a cloud name has the prefix alto added it is found in this part of the atmosphere.
middle atmosphere(troposphere)
500
Red sky at night
Halo around the moon
Clouds appear to be moving in different directions
fair
poor
poor