ATIS question

[Guest]

Archived from groups: alt.games.microsoft.flight-sim (More info?)

When ATIS tells you wind is 270 at 16 knots (let's say), does that mean
it's blowing *towards* 270 (west) or in *from* 270 (east)?



John

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[Guest]

Archived from groups: alt.games.microsoft.flight-sim (More info?)

The Lindbergh Baby <johngrabowski1@die.spammersearthlink.net> wrote:

> When ATIS tells you wind is 270 at 16 knots (let's say), does that mean
> it's blowing *towards* 270 (west) or in *from* 270 (east)?

Winds are always expressed in the direction they are blowing from.
Additionally, ATIS winds are always magnetic direction, whereas forecast
winds are always based on true north.

In your example, winds 270 at 16 means winds are blowing *from* 270 (from
the west) at 16 knots. This is done so that you can easily match the
winds to the runway.

If the winds are 270 at 16 and the single strip airport has runways 10 and
28, what runway is most closely aligned with the winds? Runway 28 (which
has a magnetic heading of approximately 280 degrees)

--
Peter


















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[Guest]

Archived from groups: alt.games.microsoft.flight-sim (More info?)

The Lindbergh Baby <johngrabowski1@die.spammersearthlink.net> wrote:
> When ATIS tells you wind is 270 at 16 knots (let's say), does that mean
> it's blowing *towards* 270 (west) or in *from* 270 (east)?
>
> John

From 270..

You will want to land on the runway closest to the ATIS reported wind
direction to get the best headwind you can...

--
Mike Flyin'8
PP-ASEL
Temecula, CA
http://flying.4alexanders.com

 

[dallas]

Archived from groups: alt.games.microsoft.flight-sim (More info?)

"pr"
> Additionally, ATIS winds are always magnetic direction, whereas forecast
> winds are always based on true north.

Why is that?...

And why are distances expressed in nautical miles, but METAR reports report
visibility in statute miles?


Dallas

 

[Guest]

Archived from groups: alt.games.microsoft.flight-sim (More info?)

Dallas <Cybnorm@spam_me_not.Hotmail.Com> wrote:

> "pr"
>> Additionally, ATIS winds are always magnetic direction, whereas forecast
>> winds are always based on true north.
>
> Why is that?...

Forecast winds are used for flight planning and flight planning is first
done with regard to true north (lat/lon). After all headings and wind
correction have been calculated based on true north, then magnetic
deviation (the difference between true and magnetic north) is used to
derive the actual magnetic headings to fly for each leg of the flight plan.

One reason that winds on the ATIS are expressed in magnetic directions is
because runways are numbered based on their magnetic heading.

--
Peter


















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[Guest]

Archived from groups: alt.games.microsoft.flight-sim (More info?)

pr wrote:
> The Lindbergh Baby <johngrabowski1@die.spammersearthlink.net> wrote:
>
>
>>When ATIS tells you wind is 270 at 16 knots (let's say), does that mean
>>it's blowing *towards* 270 (west) or in *from* 270 (east)?
>
>
> Winds are always expressed in the direction they are blowing from.

That's what I thought. Then there must have been a glitch in the game.

I recently took off heading west. ATIS told me there were 20 knot winds
blowing *from* 001. From that, I should get pushed to the left as I
took off. Instead I was pushed to the right.



J

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