Weather Reports Flashcards by Dan Lemmon

GRAFOR - Define

Graphical Aviation Forecast chart provides weather information for low-level flights (SFC to FL100). All times UTC

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GRAFOR - Issue Times

1100 and 2100

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GRAFOR - Valid Times

1100 issue - 1800, 0000 and 0600
2100 issue - 0000, 0600 and 1200
Each chart valid for ± 3hrs of the stated valid time, e.g. a chart valid at 1800 is valid for use between 1500 and 2100.

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GRAFOR - No of Charts

3 charts at each issue time.

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GRAFOR - heights

Hundreds of feet ASML

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GRAFOR - Area

New Zealand with 15NM envelope extending seaward from the coastline, and adjusted over Southern Taranaki Bight. The 15NM envelope is marked on the charts.

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GRAFOR - Fronts

Cold, Warm, Occluded, Stationary

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GRAFOR - Phenomena

SH, TS, DZ, RA, GS, GR, SN, SG, BR, FG, HZ, FU, VA, DU, SA, SQ, PO, FC, SS, DS

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GRAFOR - Deep Convective Cloud Type

TCU, CB

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GRAFOR - Deep Convective Cloud Coverage

ISOL, OCNL, FRQ, EMBD

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GRAFOR - Non deep convective cloud Coverage

OVC, BRK, SCT, NSC

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GRAFOR - Freezing Level

Spot values depicted in a box. 0º means 0º C and three figures indicate the height in hundreds of feet AMSL, e.g. 085 = 8,500 ft; 115 = 11,500 ft -
[0º : 085]

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AAW - define

Area Aviation Winds

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AAW - issue times

1100 and 2100 (all times UTC)

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AAW - Validity

1200 to 0600 and 2100 to 1200. Each of these may be split into smaller periods within the overall validity.

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AAW - Heights (winds)

1000, 3000, 5000, 7000 and 10,000 ft AMSL

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AAW - Heights (temps)

5000, 7000 and 10,000 ft AMSL

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AAW - Wind speed and direction

Degrees TRUE in knots.

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AAW - Temperature

Deg Celsius

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AAW - Areas

17 areas in New Zealand

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GNZSIGNWX - Define

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GNZSIGNWX - Issue times

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GNZSIGNWX - Validity

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GNZSIGNWX - No of Charts

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GNZSIGNWX - Heights

GNZSIGNWX - Area

GNZSIGNWX - Phenomena

GNZSIGNWX - Cloud (type)

GNZSIGNWX - Cloud (coverage)

SIGMET (text) - define

SIGMET (text) - Issue times

SIGMET (text) - Validity

SIGMET (text) - Heights

SIGMET (text) - Area

TAF and TREND - define

TAF and TREND - Validity

TAF and TREND - Heights

TAF and TREND - Area

TAF and TREND - Wind

TAF and TREND - Visibility

TAF and TREND - Cloud (type)

TAF and TREND - Cloud (amount)

METAR, METAR AUTO and SPECI - define

METAR - Aerodrome Routine Meteorological Report - routine, compiled manually, provided for a specific aerodrome and presented in code. METAR AUTO - Automatic Aerodrome Routine Meteorological Report - routine, provided by an AWS for a specific aerodrome, also presented in code. SPECI - a METAR issued outside of the routine issue time of a METAR (NZWP, NZOH and NZMF only)

METAR, METAR AUTO and SPECI - Issue times

METARs issued hourly, on the hour METAR AUTOs issued every half hour, 24 hrs/day SPECIs issued when required and will have issue time other than on the hour. (Not issued at METAR AUTO aerodromes).

METAR, METAR AUTO and SPECI - Heights

Feet above aerodrome level

METAR, METAR AUTO and SPECI - Area

Within 8KM of the aerodrome reference point When the term VC is used, this applies to the area between 8 and 16KM from the aerodrome reference point.

METAR, METAR AUTO and SPECI - Wind

Degrees TRUE, in knots. When wind varies by 60 deg or more, extreme directions are given separated by V, e.g. 260V330

METAR, METAR AUTO and SPECI - Visibility

Up to 9999 m, in meters, e.g. 7000 Above 9999 m, in kilometers, e.g. 20KM Vis variation shown by adding the direction, e.g. 2000SW - visibility variation not reported in METAR AUTO CAVOK and 999 (10KM or more) used at Auckland, Wellington and Christchurch only)

METAR, METAR AUTO and SPECI - Cloud (type)

CB, TCU (not provided in METAR AUTO, except for NZAA, NZWN and NZCH)

METAR, METAR AUTO and SPECI - Cloud (Amount)

NSC, SKC, FEW, SCT, BKN, OVC

METAR, METAR AUTO and SPECI - Temperature / DP

Deg Celsius

METAR, METAR AUTO and SPECI - Pressure (QNH)

Hectopascals (hPa)

ATIS - define

Continuous plain language broadcast of the current weather conditions at an aerodrome, on a discrete frequency.

ATIS - Issue times

Irregularly, when conditions change or deteriorate

ATIS - Heights

Feet above aerodrome level

Wind

Deg MAGNETIC in knots

ATIS - Visibility

< 5000 m in meters, e.g. 3000; ≥5000 m in KM, e.g. 5KM

ATIS - Cloud (type)

CB, TCU

ATIS - Cloud (coverage)

SKC, FEW, SCT, BKN, OVC

ATIS - Temp / DP

Deg Celsius

ATIS - Pressure (QNH)

Hectopascals (hPA)