General Observations
METAR/TAF
Surface Analysis
Instrumentation
Upper Air Analysis
100
This is the time standard used all across the globe for weather observation.
What is the Universal Time Coordinate/Zulu Time?
100
This comes as the first segment of code at the beginning of a METAR or TAF.
What is the Station Identifier?
100
This parameter is reported using the center dot of a Station Plot.
What is Cloud Cover?
100
This is the central brain of every weather tower.
What is the Datalogger?
100
This is the instrument launched via weather balloon to track Pressure, Temperature, Humidity, Wind Speed and Direction at different levels of the atmosphere.
What is a Rawinsonde?
200
This type of observation network is comprised of adult volunteers from all different walks of life.
What is the Cooperative Observer Program (COOP)?
200
This translates into 30020G35KT in METAR code.
What is Winds from 300 degrees at 20 kt gusting to 35 kt?
200
This line points in the direction the wind is coming from, and indicates speed with small hash marks at its end.
What is the Wind Barb?
200
This is the height of most standard weather towers, and is generally where the anemometer is located.
What is 10 m?
200
This pressure level generally marks the highest level at which observations are taken (varies between seasons)
What is the 250/300 mb level?
300
This is the unit of pressure used when making weather observations
What are Millibars/Hecto-Pascals/Inches of Mercury?
300
This translates to -BR in METAR code.
What is Light Mist?
300
This parameter is indicated on the bottom right hand side of the station plot, usually with a number and a small line of vary shapes.
What is Pressure Tendency?
300
This instrument sits at the same level as the thermister, and is used to measure relative humidity.
What is the Hygrometer?
300
This is the level of the atmosphere where we observe the effects of upper level vorticity
What is the 500 mb level?
400
This weather parameter is measured in Watts per square meter.
What is Radiation?
400
This code in a TAF indicates a temporary condition lasting less than half the time period it is projected for.
What is TEMPO?
400
These types of lines on a weather map represent a constant value of some physical parameter, similar to contours on a topographic map.
What are Isopleths?
400
This instrument can measure both incoming and outgoing radiation, to get a net radiation measurement for the area around the tower.
What is the Radiometer?
400
This level has the most parameters observed, including vertical velocities and relative humidity.
What is the 700 mb level?
500
This form of am/pm time is 5 hours behind UTC time
What is Eastern Standard Time?
500
This translates to PRESFR FRQ LTGICCC SW-NW MOV E in METAR code.
What is Pressure Falling Rapidly, Lightning In-cloud and Cloud-to-cloud from the Sw to the NW, moving East?
500
This type of front comes from the merging of a warm front and cold front, with a weak temperature gradient and typically slow moving or static weather.
What is an Occluded Front?
500
This very expensive instrument has the ability to measure how deep the snow is in the general vicinity of the tower.
What is the Ultrasonic Snow Depth Sensor?
500
This is a region of increased winds formed by the pressure gradient force between regions of high and low pressure, typically associated with a summer MLC, and can be seen from the surface up to 850 mb generally.
What is the Low Level Jet?