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GFS and NAM MOS Compare

KCVG GFS MOS GUIDANCE 12/10/2025 0000 UTC
KCVG NAM MOS GUIDANCE 12/10/2025 0000 UTC


Date/Time
UTC
12/10
06:00
Wed
12/10
09:00
Wed
12/10
12:00
Wed
12/10
15:00
Wed
12/10
18:00
Wed
12/10
21:00
Wed
12/11
00:00
Thu
12/11
03:00
Thu
12/11
06:00
Thu
12/11
09:00
Thu
12/11
12:00
Thu
12/11
15:00
Thu
12/11
18:00
Thu
12/11
21:00
Thu
12/12
00:00
Fri
12/12
03:00
Fri
12/12
06:00
Fri
12/12
09:00
Fri
12/12
12:00
Fri
12/12
18:00
Fri
12/13
00:00
Sat
Date/Time
Local
12/10
01:00
Wed
12/10
04:00
Wed
12/10
07:00
Wed
12/10
10:00
Wed
12/10
13:00
Wed
12/10
16:00
Wed
12/10
19:00
Wed
12/10
22:00
Wed
12/11
01:00
Thu
12/11
04:00
Thu
12/11
07:00
Thu
12/11
10:00
Thu
12/11
13:00
Thu
12/11
16:00
Thu
12/11
19:00
Thu
12/11
22:00
Thu
12/12
01:00
Fri
12/12
04:00
Fri
12/12
07:00
Fri
12/12
13:00
Fri
12/12
19:00
Fri
GFS-X/N 43 25 32 26 37
NAM-X/N 42 26 34 28 37
GFS-TMP424140404039353129282627293129282727293432
NAM-TMP404142393937343230292729313231303031313430
GFS-DPT282930353634312725232223212020212324262928
NAM-DPT313234353532292726242322222223262728283028
GFS-CLDOVOVOVOVOVOVOVOVOVOVOVOVOVBKSCOVOVOVOVOVOV
NAM-CLDOVOVOVOVOVOVOVOVOVOVOVOVOVOVOVOVOVOVOVOVOV
GFS-WDR202122232529303030292929282625222212110830
NAM-WDR202122232527313130292827262521191814153231
GFS-WSP171918171518171412090708080704040404060506
NAM-WSP141615151314151211090708080704050508060806
GFS-P06 44 99 57 18 14 5 0 22 7746 3
NAM-P06 35 88 57 16 11 3 12 39 7838 5
GFS-P12 00 33 5 77 46
NAM-P12 00 43 16 82 44
GFS-Q06 1 2 1 0 0 0 0 0 2 1 0
NAM-Q06 0 2 1 0 0 0 0 1 2 0 0
GFS-Q12 2 0 0 2 1
NAM-Q12 2 0 0 2 1
GFS-T06 0/ 8 0/ 3 2/ 0 0/ 0 0/ 0 1/ 0 0/ 0 0/ 2 0/ 5 0/ 0
NAM-T06 0/ 4 0/ 4 0/ 0 0/ 4 0/ 1 0/ 0 0/ 1 1/ 7 1/ 0 0/ 3
GFS-T12 0/ 8 2/ 9 1/ 1 0/14 0/ 7
NAM-T12 0/ 5 0/ 4 0/ 1 1/ 7 1/ 0
GFS-POZ 4 3 3 0 0 0 0 2 1 0 1 0 2 0 1 1 3 1 2 3 1
NAM-POZ 6 5 1 0 0 0 0 0 2 2 1 0 3 1 2 2 4 6 6 0 2
GFS-POS 0 0 0242947919899999900989999989796938186
NAM-POS 0 0 2 93552829998989998979798969393817785
GFS-TYP R R R R R S S S S S S S S S S S S S S S S
NAM-TYP R R R R R S S S S S S S S S S S S S S S S
GFS-SNW 0 1
NAM-SNW 0 1
GFS-CIG 7 7 6 3 4 4 4 5 5 5 5 5 5 6 8 7 5 3 2 4 5
NAM-CIG 7 7 6 3 3 4 4 4 4 5 4 5 5 6 6 5 4 3 2 4 5
GFS-VIS 7 7 5 4 5 5 7 7 7 7 7 7 7 7 7 7 5 3 3 7 7
NAM-VIS 7 7 7 3 4 5 5 7 7 7 7 7 7 7 7 7 3 4 4 7 7
GFS-OBV N N NBR N N N N N N N N N N N N NBRBR N N
NAM-OBV N N NBRBRBR N N N N N N N N N NBRBRBR 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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