unknown met abbreviations

[Aerodynamisist]

been looking at ametforcast and have found one latley

SPECI YARM 192213Z AUTO 27022KT 2900NDV // SCT007 OVC012 07/05 Q1017
RMK RF00.4/000.4

can anyone tell me what the "NDV" means ? I can't find it anywhere in the aip's or publications on line.

[OZAZTEC]

From AIP SUP H20/05

NDV - No Directional Variation (available)
NCD - No Cloud Detected

http://www.airservices.gov.au/public...t/sup/h200.pdf

[Aerodynamisist]

Thanks OZAZTEC
I didn't think to look in sup's
I should pay more attention to them in future

[blueloo]

anyone know what ALQS is?\


2005/08/18 17:45
KDKB 181745Z AUTO 12006KT 10SM -VCTSDZ SCT028 SCT038 SCT044 19/19 A2984 RMK AO2 P0005 LTG DSNT ALQS

[swh]

blueloo,

The AO2 means its an automated site with a automated rain guage, P0005 is the amount of rain in hundredths of an inch since last hour (its a US site measurements are in inches).

LTG DSNT ALQS, just means distant lightning over 10 miles away miles in all quadrants, sometimes will see LTG DSNT N which means lightning 25 statute miles north of the station.

DSNT means over 10 miles away.
VC means within 10 miles

Other unusual ones ..
OCNL LTGICCG OHD occasional lightning, in cloud, and cloud ground overhead
DS - Duststorm
SS - Sandstorm
MIFG - Shallow fog
DRDU - drifting widespread dust
DRSA - drifting sand
DRSN - drifting snow
VCSH W would mean precipitation of unknown intensity within 10 statute miles west of the station
PRESFR - pressure falling rapidly
TN18/16Z minimum temperature 18 degrees occurred around 1600 UTC
TX35/00Z maximum temperature 35 degrees occurred around 0000 UTC

[blueloo]

Thanks swh !

[Plas Teek]

The NDV. Is that an OZ thing? As we couldn't find it in the Jepps the other day and had no idea till we asked the tower at OOL. Even they had a few seconds think on it too.

[turbantime]

Read OZAZTEC's post above

[OZAZTEC]

SWH

-------
OCNL LTGICCG OHD occasional lightning, in cloud, and cloud ground overhead
------

I believe OCNL should be read as "Well Seperated"

[swh]

OZAZTEC,

What I had posted was correct for lightning.

Lightning codes in metars ....

• CG - Cloud-ground - Lightning occurring between cloud and ground.
• IC - In-cloud - Lightning which takes place within the cloud.
• CC - Cloud-cloud - Streaks of lightning reaching from one cloud to another.
• CA - Cloud-air - Streaks of lightning which pass from a cloud to the air, but do not strike the ground.
• OCNL - Occasional - Less than 1 flash per minute.
• FRQ - Frequent - About 1 to 6 flashes per minute.
• CONS - Continuous - More than 6 flashes per minute.

Just hope some saddist does not include this in PPL/CPL met.

[Hempy]

NCD - No Cloud Detected

Oh, so that's what it means...

[27/09]

The abbreviations were developed during the times when teleprinters were being used to send these messages and the charge was per character, making full text messages expensive.

There is no need for abbreviations these days, why do they still persist in using them.

[ViagraDependent]

There is no need for abbreviations these days, why do they still persist in using them.

Because, if they changed them, ASL would have to pay someone to re-write the exams to bring them in line with the modern world

[king oath]

And the public servants wouldn't know more trivia than the users.