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GFS and NAM MOS Compare

KCVG GFS MOS GUIDANCE 7/19/2018 0000 UTC
KCVG NAM MOS GUIDANCE 7/19/2018 0000 UTC


Date/Time
UTC
7/19
06:00
Thu
7/19
09:00
Thu
7/19
12:00
Thu
7/19
15:00
Thu
7/19
18:00
Thu
7/19
21:00
Thu
7/20
00:00
Fri
7/20
03:00
Fri
7/20
06:00
Fri
7/20
09:00
Fri
7/20
12:00
Fri
7/20
15:00
Fri
7/20
18:00
Fri
7/20
21:00
Fri
7/21
00:00
Sat
7/21
03:00
Sat
7/21
06:00
Sat
7/21
09:00
Sat
7/21
12:00
Sat
7/21
18:00
Sat
7/22
00:00
Sun
Date/Time
Local
7/19
02:00
Thu
7/19
05:00
Thu
7/19
08:00
Thu
7/19
11:00
Thu
7/19
14:00
Thu
7/19
17:00
Thu
7/19
20:00
Thu
7/19
23:00
Thu
7/20
02:00
Fri
7/20
05:00
Fri
7/20
08:00
Fri
7/20
11:00
Fri
7/20
14:00
Fri
7/20
17:00
Fri
7/20
20:00
Fri
7/20
23:00
Fri
7/21
02:00
Sat
7/21
05:00
Sat
7/21
08:00
Sat
7/21
14:00
Sat
7/21
20:00
Sat
GFS-X/N 84 65 83 68 77
NAM-X/N 85 67 79 65 76
GFS-TMP716869768082797169676876797976737170707472
NAM-TMP706768778183797169687073767672666666667270
GFS-DPT575759595858606161636469706969676767676768
NAM-DPT565657575453555658616469706969666666666768
GFS-CLDCLCLBKFWSCSCFWBKOVOVOVOVBKOVOVOVOVOVOVOVOV
NAM-CLDCLCLFWFWFWCLSCBKOVOVOVOVOVOVOVOVOVOVOVOVOV
GFS-WDR101009111113131214161719201721192122222628
NAM-WDR100910131412131211161515181714141819192320
GFS-WSP060406090706040404060812120909080805071208
NAM-WSP050406070606050404051010121013091012120904
GFS-P06 2 0 0 13 59 62 60 64 414356
NAM-P06 3 2 1 5 53 45 36 63 735758
GFS-P12 0 68 77 87 80
NAM-P12 3 57 59 84 78
GFS-Q06 0 0 0 0 2 3 4 3 1 1 2
NAM-Q06 0 0 0 0 2 1 0 4 4 3 4
GFS-Q12 0 2 5 4 3
NAM-Q12 0 2 2 6 5
GFS-T06 0/ 0 0/ 3 1/ 0 9/ 1 34/ 3 40/12 63/39 35/18 20/ 4 38/13
NAM-T06 0/ 0 0/ 0 0/ 6 6/ 1 31/ 4 23/11 39/28 31/11 26/ 2 34/16
GFS-T12 0/ 3 9/ 1 53/12 69/39 37/ 6
NAM-T12 0/ 0 10/ 6 43/11 59/28 35/ 6
GFS-CIG 8 8 8 8 8 8 8 8 8 8 7 7 8 8 7 7 7 4 3 5 5
NAM-CIG 8 8 8 8 8 8 8 8 8 7 7 4 6 1 1 3 4 3 4 1 1
GFS-VIS 7 7 7 7 7 7 7 7 7 7 7 6 7 6 5 7 7 7 4 6 5
NAM-VIS 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 4 5 7 7 3 3
GFS-OBV N N N N N N N N N N NHZ N NHZ N N NBRHZBR
NAM-OBV N N N N N N N N N N N N N N NBRBR N NBRBR

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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