GFS and NAM MOS Compare

KCVG GFS MOS GUIDANCE 4/27/2025 0000 UTC
KCVG NAM MOS GUIDANCE 4/27/2025 0000 UTC


Date/Time
UTC
4/27
06:00
Sun
4/27
09:00
Sun
4/27
12:00
Sun
4/27
15:00
Sun
4/27
18:00
Sun
4/27
21:00
Sun
4/28
00:00
Mon
4/28
03:00
Mon
4/28
06:00
Mon
4/28
09:00
Mon
4/28
12:00
Mon
4/28
15:00
Mon
4/28
18:00
Mon
4/28
21:00
Mon
4/29
00:00
Tue
4/29
03:00
Tue
4/29
06:00
Tue
4/29
09:00
Tue
4/29
12:00
Tue
4/29
18:00
Tue
4/30
00:00
Wed
Date/Time
Local
4/27
02:00
Sun
4/27
05:00
Sun
4/27
08:00
Sun
4/27
11:00
Sun
4/27
14:00
Sun
4/27
17:00
Sun
4/27
20:00
Sun
4/27
23:00
Sun
4/28
02:00
Mon
4/28
05:00
Mon
4/28
08:00
Mon
4/28
11:00
Mon
4/28
14:00
Mon
4/28
17:00
Mon
4/28
20:00
Mon
4/28
23:00
Mon
4/29
02:00
Tue
4/29
05:00
Tue
4/29
08:00
Tue
4/29
14:00
Tue
4/29
20:00
Tue
GFS-X/N 67 47 77 63 78
NAM-X/N 67 48 74 62 76
GFS-TMP494645566366615654505164737775696564667369
NAM-TMP494646566366625754515161697370686665657370
GFS-DPT383737363534343536373840444952555656576158
NAM-DPT414141383636374040404043485153575757586261
GFS-CLDCLCLFWFWCLCLFWCLCLCLFWSCFWSCSCCLFWBKOVOVOV
NAM-CLDCLCLSCSCCLCLFWCLCLFWSCFWSCBKBKSCSCOVOVOVOV
GFS-WDR060808090910101010101013171816171819202225
NAM-WDR070910100909101011110914181716171819202224
GFS-WSP060504101008060606050607080907070911131507
NAM-WSP040404080807060405060506070807091111131309
GFS-P06 1 0 0 1 3 7 0 0 274052
NAM-P06 3 2 0 0 3 2 1 1 161836
GFS-P12 0 4 7 28 69
NAM-P12 3 3 2 16 44
GFS-Q06 0 0 0 0 0 0 0 0 0 1 3
NAM-Q06 0 0 0 0 0 0 0 0 0 0 0
GFS-Q12 0 0 0 0 2
NAM-Q12 0 0 0 0 1
GFS-T06 0/ 0 0/ 0 2/ 0 0/ 0 2/ 0 3/ 4 2/ 0 3/ 0 17/ 3 52/26
NAM-T06 0/ 0 0/ 0 0/ 0 0/ 0 1/ 0 1/ 2 8/ 8 6/ 7 11/ 6 18/28
GFS-T12 0/ 0 2/ 0 5/ 4 3/ 6 38/ 8
NAM-T12 0/ 0 0/ 0 4/ 2 8/ 8 11/ 8
GFS-POZ 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0
NAM-POZ 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
GFS-POS 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
NAM-POS 0 0 010 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0
GFS-TYP R R R R R R R R R R R R R R R R R R R R R
NAM-TYP R R R R R R R R R R R R R R R R R R R R R
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 8 8 8 7 6 7
NAM-CIG 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 7 6 4 6
GFS-VIS 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7
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 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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