GFS and NAM MOS Compare

KCVG GFS MOS GUIDANCE 8/17/2019 1200 UTC
KCVG NAM MOS GUIDANCE 8/17/2019 1200 UTC


Date/Time
UTC
8/17
18:00
Sat
8/17
21:00
Sat
8/18
00:00
Sun
8/18
03:00
Sun
8/18
06:00
Sun
8/18
09:00
Sun
8/18
12:00
Sun
8/18
15:00
Sun
8/18
18:00
Sun
8/18
21:00
Sun
8/19
00:00
Mon
8/19
03:00
Mon
8/19
06:00
Mon
8/19
09:00
Mon
8/19
12:00
Mon
8/19
15:00
Mon
8/19
18:00
Mon
8/19
21:00
Mon
8/20
00:00
Tue
8/20
06:00
Tue
8/20
12:00
Tue
Date/Time
Local
8/17
14:00
Sat
8/17
17:00
Sat
8/17
20:00
Sat
8/17
23:00
Sat
8/18
02:00
Sun
8/18
05:00
Sun
8/18
08:00
Sun
8/18
11:00
Sun
8/18
14:00
Sun
8/18
17:00
Sun
8/18
20:00
Sun
8/18
23:00
Sun
8/19
02:00
Mon
8/19
05:00
Mon
8/19
08:00
Mon
8/19
11:00
Mon
8/19
14:00
Mon
8/19
17:00
Mon
8/19
20:00
Mon
8/20
02:00
Tue
8/20
08:00
Tue
GFS-N/X 69 90 69 88 69
NAM-N/X 71 92 70 90 69
GFS-TMP858480757271728187878276737272818585807372
NAM-TMP858782777573748388898377747373818687837473
GFS-DPT696970696868687070697069696969717171727272
NAM-DPT686869676767687069686869696970717171717272
GFS-CLDBKBKBKBKSCSCSCSCSCSCBKBKBKSCSCSCBKBKBKSCBK
NAM-CLDBKBKBKSCCLFWSCFWBKBKBKBKBKBKBKSCBKBKOVBKBK
GFS-WDR261617192019192221211920201919222121222120
NAM-WDR231720191919182123231921220916202123261814
GFS-WSP070605050605050709090505050505060708040302
NAM-WSP060704040504040610090605050403030406040302
GFS-P06 25 10 7 3 11 14 1 5 281517
NAM-P06 3 2 5 4 4 19 35 7 322913
GFS-P12 10 15 18 36 34
NAM-P12 5 5 46 35 47
GFS-Q06 0 0 0 0 0 0 0 0 0 0 0
NAM-Q06 0 0 0 0 0 0 0 0 0 0 0
GFS-Q12 0 0 0 0 0
NAM-Q12 0 0 1 0 1
GFS-T06 33/15 21/10 7/ 1 9/ 7 32/20 19/ 7 4/ 3 10/ 6 30/14 10/ 3
NAM-T06 16/18 12/12 4/ 6 9/13 21/31 23/16 27/ 5 9/ 6 36/18 11/ 4
GFS-T12 36/15 12/ 8 38/20 15/ 8 43/16
NAM-T12 17/18 17/13 32/31 29/ 8 49/18
GFS-CIG 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8
NAM-CIG 7 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8
GFS-VIS 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 6 4
NAM-VIS 7 7 7 7 7 7 7 7 7 7 7 7 7 6 5 7 7 7 7 7 3
GFS-OBV N N N N N N N N N N N N N N N N N N NBRBR
NAM-OBV N N N N N N N N N N N N NBRBR N N N N NBR

Entries of "--" indicate that the current model run does not include forecast data for the time period.


Descriptions of MOS Elements

Definitions of Categorical Elements

QPF Categories
0 no precipitation
1 0.01 to 0.09 inches
2 0.10 to 0.24 inches
3 0.25 to 0.49 inches
4 0.50 to 0.99 inches
5 1.00 to 1.99 inches
6 2.00 inches or greater
Snow Fall Amount Categories
0 no snow or a trace expected
1 > a trace to < 2 inches
2 2 to < 4 inches
4 4 to < 6 inches
6 6 to < 8 inches
8 > = 8 inches
Visibility (VIS) Categories
1 < 1/2 miles
2 1/2 - < 1 miles
3 1 - < 2 miles
4 2 - < 3 miles
5 3 - 5 miles
6 6 miles
7 > 6 miles
Ceiling Height (CIG) Categories
1 < 200 feet
2 200 - 400 feet
3 500 - 900 feet
4 1000 - 1900 feet
5 2000 - 3000 feet
6 3100 - 6500 feet
7 6600 - 12,000 feet
8 > 12,000 feet
Cloud (CLD) Categories
CL clear
FW > 0 to 2 octas of total sky cover
SC > 2 to 4 octas of total sky cover
BK > 4 to < 8 octas of total sky cover
OV 8 octas of total sky cover or totally obscured
Precipitation Type (TYP) Categories
S pure snow or snow grains
Z freezing rain/drizzle, ice pellets, or
anything mixed with freezing precip
R pure rain/drizzle or rain mixed with snow
MAV Obstruction to Vision (OBV) Categories
N none of the following
HZ haze, smoke, dust
BR mist (fog with visibility >= 5/8 mile)
FG fog or ground fog (visibility < 5/8 mile)
BL blowing dust, sand, snow

MOS element descriptions and definitions are adapted from the NWS Meteorological Development Laboratory's web site.


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