Questions tagged [metar]

METAR is a format for reporting the latest available weather information. It is similar to but distinct from TAF.

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1answer
93 views

How does ceiling relate to IFR and VFR?

I'm working on a Python script that takes in metar data and decides if an airport is VFR/IFR/MVFR etc. This is the website that I'm getting the info from: https://www.aviationweather.gov/metar/data?...
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What does NSC mean in a METAR?

Here's a METAR: SCEL 090000Z 15005KT 5000 HZ NSC 10/08 Q1020 NOSIG What does NSC mean?
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What does “FG BNK” mean in a metar?

Here's the KLAX METAR 2153Z observation: KLAX 102153Z 27010KT 10SM FEW002 BKN200 24/16 A2997 RMK AO2 SLP147 FG BNK S-NW T02390156 $
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Where can I find the latest METAR and TAF for RPVK / Kalibo International Airport?

What website holds the latest METAR and TAF for RPVK / Philippine weather? In aviation weather the information does not exist at all times. Could you suggest an other website that provides the ...
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What does it mean when there is no ceiling or “CLR” in an airport METAR?

Here's the current METAR at KFLG: KFLG 210657Z AUTO 21010KT 3/4SM -SN BR VV010 M07/M09 A2961 RMK AO2 SLP044 P0003 T10721094 410331178 It doesn't have anything about cloud layers or "CLR", but it ...
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What do the remarks of this metar mean? “RMK SC1SC5AC1 AC TR SLP116”

Here's the current METAR from CYYZ: CYYZ 140700Z 26011KT 15SM FEW025 BKN045 BKN080 M05/M08 A2984 RMK SC1SC5AC1 AC TR SLP116 Does anyone know what each section of text of the remarks section means?
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What does I1001 mean in a METAR remarks?

Here is an actual METAR example: KOMA 190352Z 36017G26KT 3SM -SN OVC012 M08/M11 A3014 RMK AO2 PK WND 36027/0302 FZDZE37SNB27 SLP220 P0000 I1001 T10831111 $ What ...
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Use of a METAR when $ is present [duplicate]

I fly out of an uncontrolled airport that has an unmanned, automated weather reporting site with a precipitation sensor (AO2). The METAR often has a \$ symbol at the end of the report, indicating ...
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646 views

Why does GR mean hail in a METAR?

Wouldn't you think they'd choose HL instead? That might confuse pilots who frequently see SS (Sandstorms), DS (Dust Storms) and VA (Volcanic Ash).
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How can an inexperienced pilot tell if the weather is good enough for flying?

When I look at weather in the morning of my flight, it looks good. However, the actual determination can be made later during the day closer to my flight time. Being a student pilot, how can I ...
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Did these weather conditions require the airline to cancel a flight? [duplicate]

[I do not believe this question duplicates a previous question, which involves different conditions and circumstances] I'm interested in the airline's response to a query of mine about why a flight ...
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370 views

What does METAR show when actual RVR is below the reporting minimum?

RVR is measured between 50m and 1500m (ICAO). When the actual RVR is below 50m, what does METAR show?
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On a METAR, what does DSPTD mean?

KDEN is currently reporting the following METAR: SPECI KDEN 090325Z 34031G37KT 10SM -PLRA FEW015 OVC036 08/03 A2992 RMK AO2 PK WND 35037/0325 RAB04PLB25 TS DSPTD P0000 T00830028 $ I have no idea ...
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How are altimeter settings estimated?

So, I spotted another weird METAR from the same place that spawned the first one I asked about (it's a USAF base if you're wondering what kind of 'drome it is): K... 060846Z 00000KT 10SM OVC002 18/...
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How to decode this METAR published during huricane Harvey?

I have the following METAR from the FAA Aviation Weather Center (AWC) website for KCRP (Corpus Christi Airport): ...
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How are METARs published?

I use https://flightplanning.navcanada.ca to get METARs and TAFs for my local stations. While listening to CYPK tower at work I noticed something in the header of my VLC: That's a METAR! But why ...
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What does the code FU1FU2FU5 mean in this metar?

In their METAR, CYPK reported ... 25SM FEW037 SCT050 OVC250 21/15 A3016 RMK FU1FU2FU5 DENSITY ALT 400FT. Since it's quite smokey out, I would have expected a ...
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How to programmatically access AIP data, METAR, TAF, NOTAMs?

I'm looking at developing an app where one of the functions I would like to implement needs to use data which is normally available in AIP, like: Aerodrome names, ICAO codes, GPS location, elevation ...
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What is this weird format (R06L/CLRD62) in METAR for runway being cleared?

Yesterday, this metar was published: METAR UUEE 292000Z 07003MPS CAVOK 17/12 Q1013 R06L/CLRD62 R06R/CLRD62 NOSIG= Can someone explain the meaning of the ...
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2answers
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What are the criteria for “variable” in METAR reports?

Regarding variable wind direction in METAR reports, what are the criteria for VARIABLE when the authority uses "VRB"? An Advisory Circular mentions the authority uses "V" when the wind direction ...
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761 views

Why do NOTAMs consist of code instead of plain language?

I'm currently getting thru a PPL course book and I don't understand this. Is there any purpose of sending NOTAMs in this format: "RWY 08R/26L DUE WIP NO CENTRELINE, TDZ OR SALS LIGHTING AVBL" ...
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What are ISA +10, ISA -15 and ISA -30?

I have found out that an ISA atmosphere is: 15 °C temperature 5 °C dewpoint 1013.25 hPa pressure What are the conditions of an ISA +10, ISA -15 and ISA -30? I know the temperature, but what are ...
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What is the relationship between temperature, dew point and the formation of clouds?

What can you infer from the temperature / dew point values in this METAR? EGJG 121630Z 09012KT 9999 SCT006 15/14 Q1015 I understand the temperature is 15 degrees and the dew point is 14, and I ...
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214 views

Aerodrome actual weather - METAR decode - 3 letters for this sky?

How can I describe this sky, in 3 letters as per the Aerodrome actual weather - METAR decode? I found online a comprehensive list of Metar codes
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Is there a way to obtain real-time METAR data?

I know that METAR data are available at hourly intervals from the US National Oceanic and Atmospheric Administration (see e.g. the report for Karpathos Airport, Greece ). However, I would have ...
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Why do METAR's report wind relative to true north rather than magnetic?

Why isn't the wind in a METAR given in magnetic heading, to match the runway numbers? Especially for areas where there is a double-digit magnetic declination. Secondary/optional question: does the ...
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1answer
6k views

How to tell the difference between METAR and SPECI reports?

I am trying to use METAR data from AviationWeather.gov to programmatically collect hourly rainfall data. This Wiki says that the first field in the report should be "type" - either METAR or SPECI. ...
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7k views

What constitutes a wind gust in a METAR report?

In a METAR report gusts of wind are shown with a G after the wind speed. When will gusts be reported? I have seen reports that show: 12017G20 12010G20 12003G20
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What is the difference between mist and fog?

Fog is a form of a cloud and it is said clouds are visible moisture. We all know that mist (baby rain) is also moisture so I am curious when will a METAR say BR (mist) or FG (fog)?
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How should the Swiss international airlines flight 850 METAR reports be interpreted?

From the Wikipedia page on the Swiss International Airlines Flight 850 crash investigation, it was stated that the initial METAR did not reflect the situation and the METAR less than an hour (a moment ...
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Why don't we get more user-friendly weather reports than METARs?

This question is not about how to decode METARs or what software or tools can be used to decode METARs. It is about why we are still using METARs today. Given that we have smartphones with video ...
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What does N mean after a runway visual range (in a METAR)?

This morning's METAR for Cambridge looked like this: EGSC 110720Z 11001KT 0150 R23/0200N R05/0175N FZFG BKN001 M02/M02 Q1028 Note the bold runway visual range (RVR) indications. What does the ...
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What does one do when the weather report has a bogus altimeter setting?

I saw a METAR for a nearby airport that had A2248 ... SLPNO in it with no maintenance indicator. Is the SLPNO a sign that the altimeter setting in the METAR is untrustworthy as well? How else does ...
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3k views

What do multiple slashes in METAR mean?

The current METAR for Stanstead in the UK says: EGSS 031520Z AUTO 29011KT 9999 FEW021/// //////TCU 07/02 Q1022 I do not know how to interpret the /// and //////. From what I remember multiple ...
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What does this METAR remark mean? 'RMK RWY 7 ATIS G LL'

I understand the long form: "Remarks: runway 7 Automated Terminal Information Service (ATIS) G landline" But what I don't understand is what runway 7 has to do with the ATIS information (this ...
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Does the “Maintenance Indicator” sign on a METAR imply we can't trust it?

As explained in this Q/A: What does a dollar sign mean in a METAR? The presence of a Dollar Sign ($) at the end of a METAR is included when an ASOS/AWSS detects that maintenance is needed on the ...
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What does a dollar sign mean in a METAR?

Look at this METAR: KLOU 151553Z 21005KT 10SM CLR 13/M01 A3044 RMK AO2 SLP309 T01281011 $ What does the dollar sign mean?
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Where can I get a history of METARs? [duplicate]

Is there a place where past METARs are logged? Suppose I want all the METAR for a given airport from October 1st to October 15th 2015. Where can I find them? If it matters, I'm looking in particular ...
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946 views

Is it normal for visibility to be missing from the METAR?

I have noticed at a local airport the AWOS METAR oftentimes is missing visibility measurements. In talking with other more experienced pilots, they tell me this isn't an isolated thing. They indicated ...
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Why is mist abbreviated BR on METARs and TAFs?

The abbreviation for a condition of mist is BR on METAR and TAF reports. How did mist end up getting abbreviated as BR?
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What geographical area does a METAR report cover?

According to the FAA's AC 00-45G section 3.1, a METAR is defined: Aviation Routine Weather Report (METAR) is the primary observation code used in the U. S. to satisfy World Meteorological ...
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What do the different colors of weather stations indicate on SkyVector?

In this particular map from SkyVector, what are the meanings of the different colored circles, and for the different amounts of 'fill-in'? It's obvious by hovering over them, that they are weather ...
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What is METAR and how is it read?

I was reading an article about TAM Airlines Flight 3054 crash and I saw the following: METAR SBSP 172200z 35008kt 7000 -ra Bkn008 Ovc070 15/14 Q1018 SBSP 172200z 35008kt 7000 -ra Bkn008 ...
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Why the number 6 in P6SM in a METAR/TAF?

A typical METAR or TAF reads something like this: VRB04KT P6SM SCT025 BKN040 OVC060 P6SM means "greater than 6 statute miles ...
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When are winds given with respect to true vs. magnetic north?

Wind information can be reported by various sources (ATIS, METAR, TAF, spoken on the radio, etc). I was taught that officially some of these sources are relative to magnetic north and others to true ...