GFS and NAM MOS Compare

KCVG GFS MOS GUIDANCE 5/08/2021 1800 UTC
KCVG NAM MOS GUIDANCE 5/08/2021 1200 UTC


Date/Time
UTC
5/8
18:00
Sat
5/8
21:00
Sat
5/9
00:00
Sun
5/9
03:00
Sun
5/9
06:00
Sun
5/9
09:00
Sun
5/9
12:00
Sun
5/9
15:00
Sun
5/9
18:00
Sun
5/9
21:00
Sun
5/10
00:00
Mon
5/10
03:00
Mon
5/10
06:00
Mon
5/10
09:00
Mon
5/10
12:00
Mon
5/10
15:00
Mon
5/10
18:00
Mon
5/10
21:00
Mon
5/11
00:00
Tue
5/11
03:00
Tue
5/11
06:00
Tue
5/11
12:00
Tue
5/11
18:00
Tue
Date/Time
Local
5/8
14:00
Sat
5/8
17:00
Sat
5/8
20:00
Sat
5/8
23:00
Sat
5/9
02:00
Sun
5/9
05:00
Sun
5/9
08:00
Sun
5/9
11:00
Sun
5/9
14:00
Sun
5/9
17:00
Sun
5/9
20:00
Sun
5/9
23:00
Sun
5/10
02:00
Mon
5/10
05:00
Mon
5/10
08:00
Mon
5/10
11:00
Mon
5/10
14:00
Mon
5/10
17:00
Mon
5/10
20:00
Mon
5/10
23:00
Mon
5/11
02:00
Tue
5/11
08:00
Tue
5/11
14:00
Tue
GFS-N/X---- 47 61 41 62 40
NAM-N/X 46 62 42 61-- 39--
GFS-TMP----565150495159595756524744445358605751474357
NAM-TMP56585750494849555657534946444552585955--4543--
GFS-DPT----353535384248505050454038383837353536343229
NAM-DPT32323337394144505048443837373737363433--3434--
GFS-CLD----OVOVOVOVOVOVOVOVOVOVOVOVBKBKBKOVOVOVSCBKBK
NAM-CLDSCBKBKOVOVOVOVOVOVOVOVOVOVOVOVBKBKBKOV--OVOV--
GFS-WDR----241109111520222935010201010336333335353433
NAM-WDR32272310091112192021340202360201343335--3434--
GFS-WSP----040310181816191317161308080807070805050712
NAM-WSP05040404031018161916151515110908101211--0408--
GFS-P06---- 51 72 99 00 67 13 7 4 8 3 9
NAM-P06 1 12 16 70 75 33 11 7 9--2219--
GFS-P12---- 73 00 74 8 8
NAM-P12 23 91 37 11-- 26--
GFS-Q06---- 1 2 4 4 1 0 0 0 0 0 0
NAM-Q06 0 0 0 3 2 0 0 0 0-- 0 0--
GFS-Q12---- 1 5 1 0 0
NAM-Q12 0 3 0 0-- 0--
GFS-T06---- 4/ 0 10/ 6 14/ 7 37/27 18/ 7 2/ 0 1/ 0 0/ 8 0/ 2 0/ 7
NAM-T06 0/ 9 7/ 7 5/ 6 17/ 8 28/29 8/ 6 1/ 0 0/ 1 2/ 8-- 2/ 4--
GFS-T12---- 21/11 48/27 2/ 4 0/ 8 0/ 7
NAM-T12 7/ 9 22/ 9 28/29 5/ 1 -- 5/ 9 --
GFS-POZ---- 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0
NAM-POZ 0 0 0 0 2 1 0 0 0 0 0 1 0 0 0 1 0 0 0-- 0 0--
GFS-POS---- 0 1 3 1 0 0 0 0 0 0 0 4 0 2 1 0 0 3 4 915
NAM-POS 0 2 0 1 0 0 0 0 0 0 0 0 0 0 2 3 2 3 4--1121--
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 -- 0--
GFS-CIG---- 7 7 6 6 6 5 3 3 3 2 4 4 6 8 6 7 7 8 8 8 6
NAM-CIG 8 8 8 7 7 6 6 6 3 3 3 3 4 4 4 7 8 7 7-- 7 8--
GFS-VIS---- 7 7 7 7 7 5 3 3 2 2 7 7 7 7 7 7 7 7 7 7 7
NAM-VIS 7 7 7 7 7 7 7 7 5 3 3 5 7 7 7 7 7 7 7-- 7 7--
GFS-OBV---- N N N N NBRBRBRBRBR N N N N N N N N N N N
NAM-OBV N N N N N N N NBRBRBRBR 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.


4,330 Page Views