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GFS and NAM MOS Compare

KCVG GFS MOS GUIDANCE 11/12/2018 1200 UTC
KCVG NAM MOS GUIDANCE 11/12/2018 1200 UTC


Date/Time
UTC
11/12
18:00
Mon
11/12
21:00
Mon
11/13
00:00
Tue
11/13
03:00
Tue
11/13
06:00
Tue
11/13
09:00
Tue
11/13
12:00
Tue
11/13
15:00
Tue
11/13
18:00
Tue
11/13
21:00
Tue
11/14
00:00
Wed
11/14
03:00
Wed
11/14
06:00
Wed
11/14
09:00
Wed
11/14
12:00
Wed
11/14
15:00
Wed
11/14
18:00
Wed
11/14
21:00
Wed
11/15
00:00
Thu
11/15
06:00
Thu
11/15
12:00
Thu
Date/Time
Local
11/12
13:00
Mon
11/12
16:00
Mon
11/12
19:00
Mon
11/12
22:00
Mon
11/13
01:00
Tue
11/13
04:00
Tue
11/13
07:00
Tue
11/13
10:00
Tue
11/13
13:00
Tue
11/13
16:00
Tue
11/13
19:00
Tue
11/13
22:00
Tue
11/14
01:00
Wed
11/14
04:00
Wed
11/14
07:00
Wed
11/14
10:00
Wed
11/14
13:00
Wed
11/14
16:00
Wed
11/14
19:00
Wed
11/15
01:00
Thu
11/15
07:00
Thu
GFS-N/X 33 41 22 44 31
NAM-N/X 31 39 20 42 25
GFS-TMP424440393836353639393330272424324043373435
NAM-TMP424340353534333437363129252321313841353027
GFS-DPT262728313232313027252322191817201918182025
NAM-DPT272728282929292826232019171514161717171719
GFS-CLDOVOVOVOVOVOVOVOVOVOVFWCLCLCLCLFWFWSCBKOVOV
NAM-CLDOVOVOVOVOVOVOVOVOVBKBKCLCLCLCLCLFWFWCLCLBK
GFS-WDR070404363635343433333334350103060505050608
NAM-WDR070403363534323332313232333434010405070808
GFS-WSP050505060809091110100706060505070810111312
NAM-WSP040406050806071010110907070404040304050505
GFS-P06 48 63 42 5 6 2 3 3 1 754
NAM-P06 25 35 15 8 8 1 1 3 4 5 7
GFS-P12 63 9 3 3 57
NAM-P12 35 13 1 4 7
GFS-Q06 1 1 0 0 0 0 0 0 0 0 1
NAM-Q06 0 0 0 0 0 0 0 0 0 0 0
GFS-Q12 1 0 0 0 1
NAM-Q12 0 0 0 0 0
GFS-T06 0/14 0/ 0 0/ 0 0/ 7 0/ 1 0/ 3 0/ 0 0/ 4 0/ 0 1/ 0
NAM-T06 0/14 0/ 0 0/ 3 0/ 4 0/ 8 0/ 7 0/ 0 0/ 0 0/ 0 0/ 0
GFS-T12 0/14 1/ 7 0/24 0/ 4 0/19
NAM-T12 0/14 0/ 4 0/ 8 1/ 0 0/ 4
GFS-POZ 1 71310 8 4 2 0 0 0 0 0 0 0 3 0 3 2 72319
NAM-POZ 1 2 51311 4 5 0 0 0 0 0 0 1 0 0 0 3 31413
GFS-POS13 0 0141440466677779698989792959074695215
NAM-POS132225365760677875889497979097969690895429
GFS-TYP R R R R R R S S S S S S S S S S S S S S R
NAM-TYP R R R S S S S S S S S S S S S S S S S S R
GFS-SNW 0 0 0
NAM-SNW 0 0 0
GFS-CIG 7 6 6 6 5 5 4 4 5 6 8 8 8 8 8 8 8 8 8 8 3
NAM-CIG 7 6 6 6 6 6 4 4 5 6 8 8 8 8 8 8 8 8 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 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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