Honeywell Bendix/King KMD 550 Pilot's Manual Addendum page 111

Understanding Weather Reports
For a single cell thunderstorm:
ISOLD (isolated) SVR TSTM (severe thunderstorm) D30 (30 nm in
diameter) MOVG (moving) FROM 2520 (250 degrees at 20 knots).
Storm TOPS ABV (above) FL450 (flight level 4-5-0). HAIL TO 2 IN
(inches in diameter) WIND GUSTS TO 65 KT (knots) PSBL (pos-
sible).
For a line of thunderstorms 25 nm wide:
LINE (line of) SVR TSTMS (severe thunderstorms) 25 MI WIDE
MOVG (moving) FROM 2745 (270 degrees at 45 knots). Storm
TOPS ABV (above) FL450 (flight level 4-5-0). WIND GUSTS TO
60KT (knots) RPRTD (reported). TORNADOES...HAIL TO 2 IN
(inches in diameter)...WIND GUSTS TO 65 KT (knots) PSBL (pos-
sible).
UNDERSTANDING ALERT WEATHER WATCHES (AWW)
1 2
SPC AWW 162236
4
WW 1162 SEVERE TSTM MS AL FL AND ADJ CSTL WTRS
6
162300Z - 170400Z
AXIS..75 STATUTE MILES NORTH AND SOUTH OF LINE..
7
45SW MOB/MOBILE AL/ - 30SSE DHN/DOTHAN AL/
8
..AVIATION COORDS.. 65NM N/S /37SW MOB - 51WNW TLH/
HAIL SURFACE AND ALOFT..1 1/4 INCHES. WIND GUSTS..60
9
KNOTS. MAX TOPS TO 400. MEAN WIND VECTOR 23035.
The following is an example of a typical Alert Weather Watch with an
explanation of the elements.
1. Station Identifier: SPC
SPC is the station identifier for the Storm Prediction Center in
Norman, Oklahoma.
AWWs are issued for:
Tornado
Damaging winds or winds > 58 knots
Hail ≥ 3/4 inch in diameter.
2. Report Type: AWW
AWW indicates this is an Alert Weather Watch.
Revision 6 Feb/2009
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KMD 550/850 FIS Addendum
Appendix A