BendixKing KAC 503 - Supplemental System FIS - Manual (Page 12)

8
Rev 1 Oct. 2003
UNDERSTANDING AIRMETS
The following is an example of a typical AIRMET with an explanation of the
elements.
1. Forecast Area: CHIT
This is the station identifier of the issuing Weather Service Forecast
Office.
BOS
Boston
CHI Chicago
DFW Dallas/Ft. Worth
MIA Miami
SFO San Fransisco
SLC Salt Lake City
The T denotes the reason for the AIRMET. This could be one of the
following:
S Sierra IFR Ceilings less than 1,000 feet and/or visi-
bility less than 3 miles affecting over 50%
of the area at one time or extensive moun-
tain obscuration.
T Tango Turbulence Moderate turbulence, sustained surface
winds of 30 knots or more at the surface
or low level windshear.
Z Zulu Icing Moderate icing and/or freezing levels.
AIRMET items are considered widespread. Widespread is considered
an area of at least 3,000 square miles.
2. Report Type: WA
WA identifies an AIRMET.
3. Date and Time Issued: 151900
15 indicates the 15th day of the month. 1900 indicates UTC.
CHIT WA 151900 AMD
AIRMET TANGO UPDT 2 FOR TURB
VALID UNTIL 160100
AIRMET TURB...KS MO
FROM MCI TO STL TO SGF TO ICT TO MCI
MOD TURB BLW 100 EXPCD
CONDS IPVG AFT 160000Z
1 3 4
5
2
6
7
8
9
10