Winds
At what value in knots are peak winds reported?
26
How do you report snow pellets in an observation
GS
BKN clouds are encoded in an observation what the sky coverage is between how many oktas?
5-7
When is TWR VIS reported in the observation
Less than 4SM and differs be one reportable avlue
Wind Shifts are a change in direction by at least 45 degrees that occurs in less than how many minutes?
15 minutes
the greatest distance that can be seen in at least half of the horizon circle and may not necessarily be continuous (i.e. may be of sectors). Prevailing visibility represents a value determined from a height of approximately 6 feet above the ground level
Prevailing visibility
How would you encode an observation BKN048 BKN054 OVC12540?
BKN048 BKN055 OVC13000
How would an hourly rate of 9/100 inch of rain be encoded in an observation
P0009
Variable Wind Direction is acceptable when wind direction is varying how many degrees or more with wind speed greater than 6 knots
60 degrees
How do you encode 3SM at an overseas location?
5000 m
Fog obscuring 2/8ths of the sky would be encoded in the body of the report as
FEW000
a 24-hour maximum temperature of 10.0°C and a 24-hour minimum temperature of -1.5°C would be encoded as
401001015
Wind gust is the maximum instantanius speed over a period of how minutes?
10 minutes
A form of solid precipitation that falls as unbranched ice crystals in the form of needles, columns or plates. Under certain conditions, can appear without precipitable overhead cloud cover and is commonly referred to as Diamond Dust. Is not encoded with any qualifiers when it is the sole form of precipitation in the weather group
Ice Crystals
At what distance is CB and TCU reported in the body of the observation?
10SM
How would you encode a snow depth of 21 inches on the ground?
4/021
In order for a wind shift, you must have a minimum sustained winds of how many knots?
10 knots
Dust or sand that is raised from the ground and takes the form of a whirling column with varying height, small diameter and an approximate vertical axis. Commonly referred to as “Dust Devils,” they typically form in dry regions on hot, calm days when intense surface heating causes a very steep temperature lapse rate in the lower levels of the atmosphere
Well Developed Dust/Sand Whirl (PO)
How many cloud layers can be reported in the observation
6
What is the sensor status indicator if the precipitation amount is not available
PNO