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METAR
An hourly routine observation
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SPECI
A special observation
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TESTM
Test observation from uncomissioned site.
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Identifier PA
The identifier for Pacific Alaska
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Identifier PH
The identifier for Pacific Hawaiian
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Identifier CU CW CZ CY
Canadian Identifiers
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WInd direction is allways referred to as coming "______" true "_______".
From, True North
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Wind: VRB
Variable (wind speed 6 knots or less).
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Visability: R
Runway visual range.
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Metar: M
Minus or less than
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Weather is...
What's blowing around or falling out of the sky.
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Precipitation: DZ
Drizzle
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Precipitation: PE
Ice PEllets
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Precipitation: SG
Snow Grains
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Precipitation: IC
Ice Crystals
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Precipitation: UP
Unknown Precepitation
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Precipitation: GR
Hail >1/4 in.
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Precipitation: GS
Small Hail/ Snow Pellets
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Observations to Visability are known as...
Obsurations
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Obscurations: FG
Fog. Visability nis 1/2 mile or less.
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Obsurations: VA
Volcanic Ash
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What is a Squall?
Sustained wind speeds at least 16kts, sustained at 22kts or more for one minute or more.
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Other Weather: FC
Funnel Cloud
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Other Weather: +FC
Tornado or Waterspout
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Other Weather: DS
Dust Storm
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Other Weather: SS
Sand Storm
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Other Weather: PO
Dust or Sand Whirl (dust devel). Think Polish off.
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Descriptors: TS
Thunder Storm
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Descriptors: BL
Blowing. >6' in height above the ground.
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Descriptors: DR
Low Drifting <6' in height above the ground.
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Present Weather Format
- Intensity
- Descriptor
- Precipitation
- Obscuration
- Other
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Percipitation Intensity
- - = Light
- + = heavy
- Blank = moderate
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Intensity is listed from what to what?
The most servere the in decreasing effect on flight.
Only refers to visability or obsurations. Not for weather intensity.
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Visability: MIFG
Shallow Fog
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Sky Condition: is reported in what fraction?
8ths
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Sky Conditions: Height is given in a three digit format. HOw do you decipher?
Leading zeros are added in order to fill in all the spaces. Add two zeros to the ent to get the feet in height.
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Sky Conditions: SKC or CLR
Sky clear or clear
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Sky Conditions: Few
Few >0 - 2/8
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Sky Conditions: SCT
Scattered 3/8 to 4/8
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Sky Conditions: BKN
Broken 5/8 to 7/8
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Sky Conditions: OVC
Overcast 8/8
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Sky Conditions: VV
Vertical Visability. Indefinate Ceiling.
IE VV005 is airport to ceiling is 500'. Height indefinate.
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Sky Conditions: Whick layer represents the ceiling?
The lowest layer of Broken or Overcast clouds.
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Sky Conditions: TCU
Towering Cumulus
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Sky Conditions: CB
CumulonimBus
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Partial Obsuration:
- FEW000 >0 - 2/8
- SCT000 3/8 - 4/8
- BKN000 5/8 - 7/8
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Temperature: ?/?
Temp/Dewpoint
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Celsius to Fahrenheight Conversion formula
C x 2 +30 = F
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Remarks: A01,A02
Type auto
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Remarks: PK Wind
Peak Wind
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Remarks: WShift
WIndshift
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Remarks: TWR VIS
Tower Visability
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Remarks: SFC VIS
Surface Visability
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Remarks: RAB,RAE
Rain Began, Rain Ended
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Remarks: TSB, TSE
Time Thunderstorm Began, Time Thunderstorm Ended.
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Remarks: SLP
Sea Level Pressure is always in Hectopascals, same as Millibars. Add a decimal point before the last digit and a 9 or 10 in the front to get closest to 1000.
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Remarks: How to read temperature?
In the remarks section provides a more accurate reading of temp.
First digit T means Temperature. Second igit 0=positive temp, 1=minus temp.
Expressed as T10641074. Temp is Minus 6.4C, Dewpoint is minus 7.4c.
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Remarks: $
Maintnance Needed at Station
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What is TAF?
Terminal Aerodrome Forecast
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How many times are TAF's issued daily?
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