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KMD 250 Pilot's Guide
Section 2
FIS Operation
Rev 4 Aug/2007
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.
NOTE: AIRMETs may be issued up to 15 minutes prior to the start of the
validity period. The FIS system will display the data age as zero until the
start of the validity period.
4. AMD indicates an amended report. Reports can be amended due
to changing weather conditions or issuance/cancelation of a
SIGMET. COR in this field would indicate a corrected AIRMET.
RTD indicates a delayed AIRMET.
5. This line indicates that there is a second (2) update (UPDT) to this
AIRMET issued for turbulence (FOR TURB). More than one meteo-
rological condition may be addressed as shown in the following:
FOR IFR AND MTN (mountain) OBSCN (obscuration)
FOR ICE AND FRZLVL (freezing level)
FOR STG (strong) SFC (surface) WINDS AND LLWS (low
level wind shear)
6. This updated AIRMET is valid until 0100 UTC on the 16th day (16)
of the month. An AIRMET does not contain an explicit validity start
time.
7. This AIRMET forecasts turbulence (TURB) for the states of KS
(Kansas) and MO (Missouri). Geographic areas are also covered
such as CSTL WTRS (coastal waters). Other geographic abbrevia-
tions are used as well (see Appendix A).
8. The affected area is defined by lines FROM MCI (Kansas City) TO
STL (St. Louis) TO SGF (Springfield) TO ICT (Wichita) and back TO
MCI. Areas can be defined by lines between points which are air-
port or navaid identifiers.
9. Moderate (MOD) turbulence (TURB) below (BLW) 10,000 feet
expected (EXPCD).
10. Conditions (CONDS) improving (IPVG) after (AFT) the 16th day (16)
of the month 0000 UTC.
If conditions end more than one hour prior to the indicated expiration
time, an amended AIRMET will be issued stating it’s cancellation. If con-
ditions end within one hour of the indicated expiration time, the AIRMET
will be allowed to expire without cancellation. Once the report is can-
celled or expires, the FIS system no longer broadcasts the report.
Understanding Weather Reports
KMD 250 FIS_R4 8/13/07 10:07 AM Page 2-73