GFS and NAM MOS Compare

KCVG GFS MOS GUIDANCE 3/26/2023 1200 UTC
KCVG NAM MOS GUIDANCE 3/26/2023 1200 UTC


Date/Time
UTC
3/26
18:00
Sun
3/26
21:00
Sun
3/27
00:00
Mon
3/27
03:00
Mon
3/27
06:00
Mon
3/27
09:00
Mon
3/27
12:00
Mon
3/27
15:00
Mon
3/27
18:00
Mon
3/27
21:00
Mon
3/28
00:00
Tue
3/28
03:00
Tue
3/28
06:00
Tue
3/28
09:00
Tue
3/28
12:00
Tue
3/28
15:00
Tue
3/28
18:00
Tue
3/28
21:00
Tue
3/29
00:00
Wed
3/29
06:00
Wed
3/29
12:00
Wed
Date/Time
Local
3/26
14:00
Sun
3/26
17:00
Sun
3/26
20:00
Sun
3/26
23:00
Sun
3/27
02:00
Mon
3/27
05:00
Mon
3/27
08:00
Mon
3/27
11:00
Mon
3/27
14:00
Mon
3/27
17:00
Mon
3/27
20:00
Mon
3/27
23:00
Mon
3/28
02:00
Tue
3/28
05:00
Tue
3/28
08:00
Tue
3/28
11:00
Tue
3/28
14:00
Tue
3/28
17:00
Tue
3/28
20:00
Tue
3/29
02:00
Wed
3/29
08:00
Wed
GFS-N/X 43 57 33 52 32
NAM-N/X 42 52 33 47 29
GFS-TMP596055514947455053524740373535444949443734
NAM-TMP586155464645454849484339383634404446413331
GFS-DPT393941424141414138353332312929323131313230
NAM-DPT353435363941434543403735353432312826252726
GFS-CLDCLSCBKOVOVOVOVOVOVOVOVOVBKOVSCBKOVOVOVCLCL
NAM-CLDFWFWSCOVOVOVOVOVOVOVOVOVOVOVOVOVOVOVBKCLFW
GFS-WDR161812120233303031323501030406073535343323
NAM-WDR151512131636343630333536010203033432332321
GFS-WSP060504050606090913100906060506060708070402
NAM-WSP070605060405060508091109070507060707050203
GFS-P06 0 12 76 27 1 2 4 7 30 4 0
NAM-P06 0 1 82 54 6 5 7 8 6 0 2
GFS-P12 76 31 4 30 9
NAM-P12 82 67 7 8 2
GFS-Q06 0 0 2 0 0 0 0 0 0 0 0
NAM-Q06 0 0 2 1 0 0 0 0 0 0 0
GFS-Q12 2 0 0 0 0
NAM-Q12 1 1 0 0 0
GFS-T06 0/19 4/12 6/ 6 1/ 0 0/16 0/ 1 0/ 2 1/ 1 4/ 3 0/ 1
NAM-T06 0/15 0/15 3/ 6 2/ 1 0/12 0/ 8 1/ 1 1/ 0 0/ 5 0/ 1
GFS-T12 4/19 11/ 7 0/16 1/ 2 4/10
NAM-T12 1/17 3/ 8 0/19 1/ 1 0/ 5
GFS-POZ 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
NAM-POZ 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
GFS-POS 0 0 0 0 1 2 6 3 4 81524181938232519174047
NAM-POS 0 0 1 2 2 1 1 2 4 5 616354051514335446459
GFS-TYP R R R R R R R R R R R R R R R R R R R R S
NAM-TYP R R R R R R R R R R R R R R S S R R R S S
GFS-SNW 0 0 0
NAM-SNW 0 0 0
GFS-CIG 8 8 8 8 7 6 5 5 6 6 6 6 6 7 8 8 6 6 6 8 8
NAM-CIG 8 8 8 8 8 6 3 4 5 5 5 5 4 4 5 6 6 7 8 8 8
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 5 5 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 NBR 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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