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Click on the help pages link to view more information on the products within GFA, and have access to tutorial videos and information.

To Walk through a step-by-step tutorial of the Graphical Forecasts for Aviation, click here.

Select initialization

Time

Data

Cross Section Tool

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Map Options

Data

METAR

Parameters visible

	Temp	Wind	Alt
Vis	Wx	Cover	Ceil
	Dew	Wgst	Id

Density:
Scale:

Metric units

Decode METAR

Include TAF

PIREP

Types:
Turbulence Icing Weather Other

Hide negative reports

Scale:
Top: 480
Base: 0
Max age:

TAF

Density:
Scale:

Metric units

Decode TAF

Weather Symbol

Density:
Scale:

SIGMET

Opacity:

Display heights

G-AIRMET

Opacity:

CWA

Opacity:

Imagery

Weather Image

Opacity:

Satellite

Opacity:
Type:

Radar

Opacity:
Type:

Loop

Map Format

Use local time

Show G-AIRMET domain

Show GFA domain

Basemap:

Opacity:

Map Features

Airports
Scale:
Show IDs
Runways

Fixes
NAVAIDs
Show IDs
Jetroutes
Q routes
Airways
Airspace
SUA
ARTCC/FIR

Highways
Roads
Cities
Counties
Rivers
Features
Obstacles
NWS County Warning Areas
Latitude/longitude grid lines

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Satellite Radar Weather Symbol METAR Flight Cat PIREP TAF Fronts SIGMET CWA NWS Warnings TCF Fcst Discussion SPC Conv Outlook G-AIRMET

G-AIRMET

IFR Mtn obs LLWS Sfc wind Freezing lvl Turb high Turb low Icing

Go to:

MSL

Level

METAR Station Plot

Weather Symbols

TAF Station Plot

Weather Symbols

FltCat

LIFR	IFR	MVFR	VFR

PIREP
Turb					Ice						Other
					\|					\|
NIL	LGT	MOD	SEV	LLWS		NIL	LGT	MOD	SEV

Radar (dBZ)

5		15		25		35		45		55		65

Radar Echo Tops (kft)

5		15		25		35		45		55		65

Lightning (event density per 5 min)
No Coverage over Alaska

10		20		30		40		50		60		70

Wind Speed (kt)

	10		20		30		40		80		120		160

Wind Barbs

Calm	15kt	60kt	25G30kt

Sky Coverage <FL180

FEW	SCT	BKN	OVC

Cloud Tops 100s Ft MSL

	060		120		180		300		420

Cloud Bases 100s Ft MSL

	060		120		180

Sky Cover <FL180

SKC	FEW	SCT	BKN	OVC

FLT CAT

LIFR	IFR	MVFR
Weather Symbols

CIG (ft AGL)

	100		300		500		700		1000		2000
Weather Symbols

VIS (SM)

	0.25		0.5		1		2		3		4
Weather Symbols

Density Alt Dev (ft)

	500		1000		1500		2000		2500		3000		3500		4000
Weather Symbols

Precip Type
	Rain	Snow	Mix	Ice	TS
Chance
Likely					Severe
Weather Symbols

Wx Type

Haze	Fog	Smoke	Dust/Sand

Thunderstorm

ISOL	SCT	NUM
Weather Symbols

TCF
Coverage		Lines

Sparse 25-39%	Medium 40-74%	Solid 75-100%

SPC Convective Outlook

TSTM	MRGL	SLGT	ENH	MDT	HIGH
SPC Product Description

Winter Weather
	Snow	Mix	Ice
Chance
Likely
Weather Symbols

Icing Severity

Trace	Light	Mod	Heavy

Freezing Level (MSL x100ft)

	010		030		050		070		090		110		130		150		170

GTG (Eddy Dissipation Rate)
		L	MOD			SEV				E	Heavy
	LGT		MOD		SEV			EXTRM			Medium
	L	MOD		SEV			EXTRM				Light
10		20		40		60		80		100
(m²/s³)^1/3

LLWS (/s)

0	.06		.12		.18		.24		.3

SIGMETS

Conv- ective

Thunder Storm

Trop Cyclone

Blowing Dust/Sand

Volcanic Ash

Turb

Icing

G-AIRMET/AIRMETS

SFC Wind

LLWS

Turb High

Turb Low

FRZ LVL

Icing

MTN OBSCN

CIG/VIS (IFR)

NWS Warnings

Tornado

Severe TS

Winter Storm

Blizzard

Ice Storm

Lake Effect Snow

Storm

Gale

High Wind