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GFS and NAM MOS Compare

KCVG GFS MOS GUIDANCE 11/15/2018 0000 UTC
KCVG NAM MOS GUIDANCE 11/15/2018 0000 UTC


Date/Time
UTC
11/15
06:00
Thu
11/15
09:00
Thu
11/15
12:00
Thu
11/15
15:00
Thu
11/15
18:00
Thu
11/15
21:00
Thu
11/16
00:00
Fri
11/16
03:00
Fri
11/16
06:00
Fri
11/16
09:00
Fri
11/16
12:00
Fri
11/16
15:00
Fri
11/16
18:00
Fri
11/16
21:00
Fri
11/17
00:00
Sat
11/17
03:00
Sat
11/17
06:00
Sat
11/17
09:00
Sat
11/17
12:00
Sat
11/17
18:00
Sat
11/18
00:00
Sun
Date/Time
Local
11/15
01:00
Thu
11/15
04:00
Thu
11/15
07:00
Thu
11/15
10:00
Thu
11/15
13:00
Thu
11/15
16:00
Thu
11/15
19:00
Thu
11/15
22:00
Thu
11/16
01:00
Fri
11/16
04:00
Fri
11/16
07:00
Fri
11/16
10:00
Fri
11/16
13:00
Fri
11/16
16:00
Fri
11/16
19:00
Fri
11/16
22:00
Fri
11/17
01:00
Sat
11/17
04:00
Sat
11/17
07:00
Sat
11/17
13:00
Sat
11/17
19:00
Sat
GFS-X/N 37 28 41 30 43
NAM-X/N 38 30 43 30 46
GFS-TMP353535353434333232313032384038353433324138
NAM-TMP343637343535343634333237393937363433324241
GFS-DPT262728313434333129282728313232323030303333
NAM-DPT242830333434323129272629313131282727273334
GFS-CLDOVOVOVOVOVOVOVOVOVSCSCBKBKBKSCBKBKOVBKBKOV
NAM-CLDOVOVOVOVOVOVOVOVOVOVBKBKOVSCFWFWSCBKBKBKOV
GFS-WDR060710121623252525232123252525242321212101
NAM-WDR060709131522252625242223252628272420171931
GFS-WSP151409050407070809091112100805030303030405
NAM-WSP151210060404050709091012120907040403040604
GFS-P06 00 96 97 24 2 1 1 0 2 4 6
NAM-P06 00 00 99 31 4 5 2 3 6 812
GFS-P12 00 43 10 2 10
NAM-P12 00 36 7 15 16
GFS-Q06 4 2 2 0 0 0 0 0 0 0 0
NAM-Q06 4 3 2 0 0 0 0 0 0 0 0
GFS-Q12 2 0 0 0 0
NAM-Q12 3 0 0 0 0
GFS-T06 1/ 0 0/ 0 0/ 0 0/ 0 0/ 2 0/ 5 0/ 2 0/ 7 1/ 0 1/ 2
NAM-T06 0/ 3 0/ 0 1/ 0 1/ 0 0/ 5 0/ 3 0/11 1/ 5 1/ 0 1/ 5
GFS-T12 1/ 2 1/18 0/ 5 2/18 1/ 4
NAM-T12 0/ 3 1/ 0 0/ 5 1/11 1/ 0
GFS-POZ82715525 9 0 0 015152422171419181510 7 0 5
NAM-POZ3221 3 0 0 0 6 71718241710 91713181518 5 2
GFS-POS13151211265677827465604517 0 0183412 8 3 8
NAM-POS3624 1 0304768767474565031282524203213 0 0
GFS-TYP Z Z Z R R S S S S S Z S R R R R S R R R R
NAM-TYP Z R R R R R S S S S S S R R R R R R R R R
GFS-SNW 0 0
NAM-SNW 0 0
GFS-CIG 6 3 3 3 2 3 3 4 4 8 8 7 4 4 4 5 8 5 8 8 5
NAM-CIG 6 4 3 2 2 3 3 4 5 5 8 6 5 5 8 8 8 8 8 8 4
GFS-VIS 5 4 3 2 2 1 3 5 7 7 7 7 6 7 7 7 6 7 7 7 7
NAM-VIS 7 5 5 3 3 4 3 5 7 7 7 7 7 7 7 7 6 5 5 7 1
GFS-OBVBRBRBRFGFGFGBRBR N N N NHZHZHZHZHZBR N N N
NAM-OBV N N NBRBRBRBRBRBR N N N N N N NBRBRBR NHZ

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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