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• Graphical METARs. The MX Weather page

(in the NAV page group) can show colored ﬂags

to indicate the level of current weather condi-

tions at those airports for which textual METAR

reports are available. The ﬂags are color-coded

to indicate the severity of the current weather at

the airport: cyan for VFR conditions, green for

Marginal VFR conditions, yellow for IFR condi-

tions, or magenta of Low IFR conditions.

• TAFs. A TAF (Terminal Aerodrome Forecast)

page is added among the airport pages of the

WPT page group. The TAF page differs from the

Textual METAR page in that it describes forecast

future weather conditions rather than current

conditions.

• TFRs. The boundaries of areas with Temporary

Flight Restrictions are outlined in yellow on the

Map and XM Weather pages of the NAV page

group. In the 500W-series, TFR boundaries are

also shown on the NAV main page. You can

obtain more information about a TFR by bring-

ing up the map cursor, moving the map cursor

to within the yellow outlined area, and pressing

the ENT key.

XM Nexrad Weather

The National Weather Service' s network of WSR-

88D Doppler weather surveillance radars—also called

NEXRAD, for Next Generation Radar—has greatly

improved the detection of meteorological events such

as thunderstorms, tornados, and hurricanes. An exten-

sive network of NEXRAD weather radars provides

almost complete coverage of the continental United

States, Alaska, and Hawaii. The unobstructed range of

each NEXRAD is up to 250 nautical miles.

When enabled, composite data from all the

NEXRAD radar sites in the United States is shown.

This data is composed of the maximum reﬂectivity

from the individual radar sweeps. The display is color-

coded to indicate the weather level severity. Informa-

tion about with sites are operational or off-line is also

available.

To display NEXRAD weather on the Map

page:

With the Map page (the second page of

the NAV page group) displayed, press the

MENU key. The Page Menu for the Map page

appears.

Turn the large right knob to highlight "Dis-

play NEXRAD," and then press ENT. (If "Hide

NEXRAD" appears, NEXRAD radar data is

already enabled; just press MENU again to

exit the Page Menu.)

To display NEXRAD weather on the XM

Weather page:

With the XM Weather page (the third page of

the NAV page group) displayed, look at the

upper left corner of the page. Under the page

title ("XM Weather") either "NEXRAD" or

"METAR" appears. If the word is "NEXRAD,"

do nothing; NEXRAD weather is already being

displayed.

If the word in the upper left corner of the page

Part Two: Section 2

XM Weather