Status in source: mandatory.
Technical details
{
"smi_kind": "OBJECT-TYPE",
"definition": [
"essVisibilitySituation",
"OBJECT-TYPE",
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"fogNotPatchy",
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"4",
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"patchyFog",
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"5",
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"blowingSnow",
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"6",
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"smoke",
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"7",
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"seaSpray",
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"8",
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"vehicleSpray",
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"9",
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"blowingDustOrSand",
"(",
"10",
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"sunGlare",
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"11",
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"swarmsOfInsects",
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"12",
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],
"syntax_tree": [
[
"SimpleSyntax",
"INTEGER",
[
"enumSpec",
[
[
"other",
1
],
[
"unknown",
2
],
[
"clear",
3
],
[
"fogNotPatchy",
4
],
[
"patchyFog",
5
],
[
"blowingSnow",
6
],
[
"smoke",
7
],
[
"seaSpray",
8
],
[
"vehicleSpray",
9
],
[
"blowingDustOrSand",
10
],
[
"sunGlare",
11
],
[
"swarmsOfInsects",
12
]
]
]
],
null,
[
"MaxAccessPart",
"read-only"
],
[
"Status",
"mandatory"
],
[
"DESCRIPTION",
"Describes the travel environment in terms of visibility. If one exists, the corresponding BUFR value is indicated for staffed (BUFRs) and automated (BUFRa) stations. The indicated value can be found in the BUFR Table referenced below. Defined values are: Range BUFRs BUFRa Meaning 1 other visibility anomaly 2 unknown 3 0 100 clear 4 44 130 Fog - not patchy 5 41 131 Patchy fog 6 36 127 Blowing snow 7 04 104 Smoke 8 07 207 Sea Spray 9 Vehicle Spray 10 31 127 Blowing dust or sand 11 sun glare 12 Swarms of insects"
],
[
"REFERENCE",
"The values identified in the above table for BUFRa and BUFRs can be found in WMO Binary Code form FM 94 BUFR Table B table reference descriptor 0 20 003."
],
null,
null,
null
]
}