GFS and NAM MOS Compare

KCVG GFS MOS GUIDANCE 7/16/2018 1200 UTC
KCVG NAM MOS GUIDANCE 7/16/2018 1200 UTC


Date/Time
UTC
7/16
18:00
Mon
7/16
21:00
Mon
7/17
00:00
Tue
7/17
03:00
Tue
7/17
06:00
Tue
7/17
09:00
Tue
7/17
12:00
Tue
7/17
15:00
Tue
7/17
18:00
Tue
7/17
21:00
Tue
7/18
00:00
Wed
7/18
03:00
Wed
7/18
06:00
Wed
7/18
09:00
Wed
7/18
12:00
Wed
7/18
15:00
Wed
7/18
18:00
Wed
7/18
21:00
Wed
7/19
00:00
Thu
7/19
06:00
Thu
7/19
12:00
Thu
Date/Time
Local
7/16
14:00
Mon
7/16
17:00
Mon
7/16
20:00
Mon
7/16
23:00
Mon
7/17
02:00
Tue
7/17
05:00
Tue
7/17
08:00
Tue
7/17
11:00
Tue
7/17
14:00
Tue
7/17
17:00
Tue
7/17
20:00
Tue
7/17
23:00
Tue
7/18
02:00
Wed
7/18
05:00
Wed
7/18
08:00
Wed
7/18
11:00
Wed
7/18
14:00
Wed
7/18
17:00
Wed
7/18
20:00
Wed
7/19
02:00
Thu
7/19
08:00
Thu
GFS-N/X 67 87 64 83 63
NAM-N/X 68 86 62 84 62
GFS-TMP818178757269707784858173696666757981786766
NAM-TMP808078757370707682847971676466768181776765
GFS-DPT737474726967656462616363616060615958586060
NAM-DPT727271717068666159585859585859595756565859
GFS-CLDOVBKBKBKBKFWCLFWSCSCSCSCSCCLCLFWSCSCSCCLSC
NAM-CLDOVOVOVOVOVBKSCFWFWFWFWCLCLCLFWFWSCSCFWCLSC
GFS-WDR232527283033333332323335353636040302020608
NAM-WDR202225242733353634323234353536023534360509
GFS-WSP070805050606050710111006040404060606060405
NAM-WSP070703030305060710120805040303050606050304
GFS-P06 71 37 8 2 1 3 4 3 4 1 4
NAM-P06 74 39 9 2 2 1 5 3 3 1 2
GFS-P12 37 4 5 7 6
NAM-P12 53 3 5 4 4
GFS-Q06 4 0 0 0 0 0 0 0 0 0 0
NAM-Q06 3 0 0 0 0 0 0 0 0 0 0
GFS-Q12 0 0 0 0 0
NAM-Q12 1 0 0 0 0
GFS-T06 49/15 26/ 7 2/ 2 2/ 1 3/ 8 1/ 1 0/ 1 0/ 0 0/ 4 0/ 0
NAM-T06 51/19 31/ 6 5/ 3 3/ 2 5/ 7 1/ 6 0/ 0 0/ 4 1/11 0/ 0
GFS-T12 56/16 2/ 4 5/ 8 0/ 2 0/ 4
NAM-T12 65/23 5/ 3 5/ 8 0/ 4 1/11
GFS-CIG 5 6 6 8 8 8 8 8 8 8 8 8 8 8 8 8 6 7 8 8 8
NAM-CIG 5 5 6 6 6 6 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8
GFS-VIS 7 7 7 7 6 6 7 7 7 7 7 7 7 7 5 7 7 7 7 7 6
NAM-VIS 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7
GFS-OBV N N N NBR N N N N N N N N NHZ N N N N NHZ
NAM-OBV N N N N N N N N N N N N N N N N N N N N N

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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