GFS and NAM MOS Compare

KCVG GFS MOS GUIDANCE 12/01/2022 0000 UTC
KCVG NAM MOS GUIDANCE 12/01/2022 0000 UTC


Date/Time
UTC
12/1
06:00
Thu
12/1
09:00
Thu
12/1
12:00
Thu
12/1
15:00
Thu
12/1
18:00
Thu
12/1
21:00
Thu
12/2
00:00
Fri
12/2
03:00
Fri
12/2
06:00
Fri
12/2
09:00
Fri
12/2
12:00
Fri
12/2
15:00
Fri
12/2
18:00
Fri
12/2
21:00
Fri
12/3
00:00
Sat
12/3
03:00
Sat
12/3
06:00
Sat
12/3
09:00
Sat
12/3
12:00
Sat
12/3
18:00
Sat
12/4
00:00
Sun
Date/Time
Local
12/1
01:00
Thu
12/1
04:00
Thu
12/1
07:00
Thu
12/1
10:00
Thu
12/1
13:00
Thu
12/1
16:00
Thu
12/1
19:00
Thu
12/1
22:00
Thu
12/2
01:00
Fri
12/2
04:00
Fri
12/2
07:00
Fri
12/2
10:00
Fri
12/2
13:00
Fri
12/2
16:00
Fri
12/2
19:00
Fri
12/2
22:00
Fri
12/3
01:00
Sat
12/3
04:00
Sat
12/3
07:00
Sat
12/3
13:00
Sat
12/3
19:00
Sat
GFS-X/N 40 26 58 44 46
NAM-X/N 43 27 53 36 42
GFS-TMP272423303740343028283043545854535353504234
NAM-TMP272423303943373431303140485150504845423832
GFS-DPT161412151313141515171925273033353943433523
NAM-DPT151312131211121213151722273136353636352920
GFS-CLDCLCLCLCLCLCLFWCLFWCLCLFWBKOVOVOVOVOVOVFWCL
NAM-CLDCLCLCLCLCLCLCLFWFWBKFWBKOVOVOVOVOVOVOVFWCL
GFS-WDR282726271616141415161718191818182021243132
NAM-WDR282825281916151515161618201917182022262729
GFS-WSP130805040305050505060712141317192016161406
NAM-WSP130804060303040405060609131516191716201708
GFS-P06 0 0 0 0 1 0 0 42 7434 3
NAM-P06 1 1 2 1 3 4 4 41 4510 3
GFS-P12 0 1 0 84 37
NAM-P12 2 3 5 45 16
GFS-Q06 0 0 0 0 0 0 0 1 1 0 0
NAM-Q06 0 0 0 0 0 0 0 1 1 0 0
GFS-Q12 0 0 0 2 0
NAM-Q12 0 0 0 1 0
GFS-T06 0/13 0/ 0 0/ 7 0/ 9 0/ 4 0/ 0 0/ 9 3/10 2/ 2 0/ 0
NAM-T06 0/ 5 0/ 4 0/ 5 1/ 4 0/ 4 0/ 2 1/15 10/21 1/11 0/14
GFS-T12 0/13 0/ 9 0/ 4 3/10 2/11
NAM-T12 0/ 5 1/ 7 1/ 4 10/21 1/11
GFS-POZ 7 6 2 1 1 61021141511 4 0 1 1 3 1 0 3 2 1
NAM-POZ 8 0 0 0 0 5 91716191412 4 2 1 1 1 0 1 1 2
GFS-POS9295989996593843424331 0 1 0 1 0 1 1 02572
NAM-POS92000099998956392418231913 0 1 0 1 5238493
GFS-TYP S S S S S S S S S S R R R R R R R R R R S
NAM-TYP S S S S S S S S R R R R R R R R R R R S S
GFS-SNW 0 0
NAM-SNW 0 0
GFS-CIG 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 7 5 4 4 8 8
NAM-CIG 8 8 8 8 8 8 8 8 8 8 8 8 7 7 7 7 5 5 5 8 8
GFS-VIS 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 5 5 7 7
NAM-VIS 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 5 5 7 7 7
GFS-OBV N N N N N N N N N N N N N N N N N N N N N
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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