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GFS and NAM MOS Compare

KCVG GFS MOS GUIDANCE 9/25/2018 0000 UTC
KCVG NAM MOS GUIDANCE 9/25/2018 0000 UTC


Date/Time
UTC
9/25
06:00
Tue
9/25
09:00
Tue
9/25
12:00
Tue
9/25
15:00
Tue
9/25
18:00
Tue
9/25
21:00
Tue
9/26
00:00
Wed
9/26
03:00
Wed
9/26
06:00
Wed
9/26
09:00
Wed
9/26
12:00
Wed
9/26
15:00
Wed
9/26
18:00
Wed
9/26
21:00
Wed
9/27
00:00
Thu
9/27
03:00
Thu
9/27
06:00
Thu
9/27
09:00
Thu
9/27
12:00
Thu
9/27
18:00
Thu
9/28
00:00
Fri
Date/Time
Local
9/25
02:00
Tue
9/25
05:00
Tue
9/25
08:00
Tue
9/25
11:00
Tue
9/25
14:00
Tue
9/25
17:00
Tue
9/25
20:00
Tue
9/25
23:00
Tue
9/26
02:00
Wed
9/26
05:00
Wed
9/26
08:00
Wed
9/26
11:00
Wed
9/26
14:00
Wed
9/26
17:00
Wed
9/26
20:00
Wed
9/26
23:00
Wed
9/27
02:00
Thu
9/27
05:00
Thu
9/27
08:00
Thu
9/27
14:00
Thu
9/27
20:00
Thu
GFS-X/N 78 63 69 51 70
NAM-X/N 80 64 71 48 68
GFS-TMP696968727474717271716963646761575553536763
NAM-TMP696968717677747169686664676861565351496560
GFS-DPT686767697172717070686559555250494950494949
NAM-DPT686766697171706967666462575452474646454847
GFS-CLDOVOVOVOVOVOVOVOVOVOVOVOVBKCLFWSCOVOVOVBKCL
NAM-CLDOVOVOVOVOVOVOVOVOVOVOVOVOVBKBKFWCLFWSCOVFW
GFS-WDR171818192020181822242931323134360504071824
NAM-WDR181818191920181920222430333334030406062321
GFS-WSP111011121110081112071012110905040402040502
NAM-WSP110911100908071010090711131206050403020504
GFS-P06 71 65 60 80 55 16 2 2 7 8 9
NAM-P06 63 39 52 72 67 28 11 9 121211
GFS-P12 68 83 16 7 14
NAM-P12 85 84 40 12 14
GFS-Q06 1 2 2 5 1 0 0 0 0 0 0
NAM-Q06 1 0 1 4 2 0 0 0 0 0 0
GFS-Q12 1 5 0 0 0
NAM-Q12 3 3 0 0 0
GFS-T06 20/ 0 21/ 2 38/11 52/11 16/ 1 4/ 1 0/ 0 0/ 0 0/ 0 0/ 0
NAM-T06 24/ 0 14/ 1 35/11 35/10 28/ 2 17/ 4 0/ 0 0/ 0 0/ 1 1/ 4
GFS-T12 24/ 3 52/11 17/ 3 0/ 0 1/ 2
NAM-T12 28/ 2 51/14 39/ 5 0/ 0 0/ 2
GFS-POZ 0 0 1 0 0 0 1 2 0 0 0 0 0 0 0 0 0 0 0 0 0
NAM-POZ 1 1 1 1 0 1 1 1 1 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 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 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 2 2 2 3 4 5 6 7 4 3 3 4 8 8 8 8 8 8 7 8 8
NAM-CIG 2 2 2 2 1 6 6 6 2 4 3 3 1 6 8 8 8 8 8 8 8
GFS-VIS 6 6 7 5 6 6 7 5 6 7 6 7 7 7 7 7 7 7 7 7 7
NAM-VIS 5 5 5 5 7 7 7 5 7 7 5 5 7 7 7 7 7 7 4 7 7
GFS-OBV NBR NBR N N NBRBR NBR N N N N N N N N N N
NAM-OBV NBR NBR N N N N N NBRBR N N N N N NBR 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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