Decoding MAV, and
NGM, and
NGM Guidance
The NGM-Based MOS FWC guidance is generated from 0000 UTC and 1200 UTC model output from the NGM run of NCEP's Global Spectral Model.
Forecast elements are valid from 6 to 72 hours in advance.
Sample FWC Message
FOUS14 KWBC 060357
DCA ESC NGM MOS GUIDANCE 3/06/91 0000 UTC
DAY /MAR 6 /MAR 7 /MAR 8
HOUR 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12
MX/MN 59 39 54 24
TEMP 37 34 33 38 45 53 52 49 46 43 40 42 47 51 42 39 35 30 24
DEWPT 27 28 28 30 32 36 40 38 41 41 37 33 28 27 25 21 20 19 19
CLDS OV OV OV OV OV OV OV OV OV OV BK BK BK SC SC SC CL CL CL
WDIR 26 18 08 12 14 14 15 18 24 27 28 29 29 29 29 33 01 02 00
WSPD 01 04 06 10 11 12 16 18 13 15 12 20 24 22 14 12 14 08 00
POP06 4 9 46 85 62 3 7 12 8
POP12 49 91 8 19
QPF 0/ 0/ 1/1 3/ 2/4 0/ 0/0 0/ 0/0
TSV06 2/ 0 3/ 0 4/ 1 5/ 1 6/ 2 16/ 3 11/ 1 8/ 0 0/ 0
TSV12 4/ 0 8/ 1 21/ 4 9/ 1
PTYPE S S S S S R R R R R R R R S Z
POZP 8 10 12 6 0 0 0 0 0 1 3 0 2 24 35
POSN 65 67 70 48 41 14 11 13 15 16 20 9 16 50 42
SNOW 0/ 0/ 0/1 0/ 0/0 0/ 0/0 0/ 0/0
CIG 4 5 4 4 5 6 7 6 3 2 1 5 6
VIS 3 4 3 5 5 5 5 4 2 2 1 3 4
OBVIS H H H N N N N F F F F H N
HOUR = Forecast hour, i.e. how many hours from the model run time.