BendixKing KAC 503 - Supplemental System FIS User Manual

Page 9

Rev 1 Oct. 2003

FM denotes “from” and 1000 indicates 1000Z. “From” means a signifi-
cant change in prevailing conditions is expected. The described condi-
tions follow this element and supercede all previous forecast conditions.

10. Forecast Wind: 22010KT

See #5 in the UNDERSTANDING METARs section for details.

11. Forecast Visibility: 5SM

See #6 in the UNDERSTANDING METARs section for details.

12. Forecast Weather Phenomenon: -SHRA

See #7 in the UNDERSTANDING METARs section for details.

13. Forecast Sky Conditions: OVC020

See #8 in the UNDERSTANDING METARs section for details.

14. Change in Conditions: BECMG 1315

BECMG indicates “becoming” over the time interval between 1300Z
(13) and 1500Z (15). “Becoming” describes a gradual change in fore-
cast conditions. The described conditions follow this element and
supercede previously reported like elements.

15. Wind Becoming: 20010KT

See #5 in the UNDERSTANDING METARs section for details. This
element may be omitted if no change is expected.

16. Visibility Becoming: P6SM

See #6 in the UNDERSTANDING METARs section for details. This
element may be omitted if no change is expected.

17. Weather Phenomenon Becoming: NSW

NSW indicates “No Significant Weather”. See #7 in the UNDER-
STANDING METARs section for details.

18. Sky Conditions Becoming: SKC

See #8 in the UNDERSTANDING METARs section for details. This
element may be omitted if no change is expected.

19. Change in Conditions: TEMPO 2022

TEMPO indicates “temporary” changes expected as described between
2000Z (20)and 2200Z (22). “Temporary” indicates a temporary fluctua-
tion in conditions, usually lasting less than one hour. The described
conditions follow this element.

20. Low Level Windshear: WS015/30045KT

WS indicates “windshear” not associated with convective activity. 015
indicates the windshear is expected at 1500 feet. AGL Wind is
expected from 300° (300) at 45 knots (45KT).

21. Change in Conditions: PROB40 0407

PROB40 indicates a 40% “probability” of described conditions occurring
between 0400Z (04)and 0700Z (07). The described conditions follow
this element.