WMO Headings have the format of T1T2A1A2ii CCCC .


The CCCC for all TPC product WMO headings is KNHC

The T1 for all TPC product WMO headings is L.

Super headings are used to aggregate products for the same parameter (element)
and sector.  These aggregate products contain individual products for all
forecast periods.  For these aggregate products the WMO headings are consistent
with those for individual NDFD products except the A2 is always Z.


A = 34 knots, incremental
B = 34 knots, cumulative
C = 50 knots, incremental
D = 50 knots, cumulative
E = 64 knots, incremental
F = 64 knots, cumulative
G = Probabilistic Storm Surge
H = UNASSIGNED
I = UNASSIGNED
J = UNASSIGNED
K = UNASSIGNED
L = UNASSIGNED
M = UNASSIGNED
N = UNASSIGNED
O = UNASSIGNED
P = UNASSIGNED
Q = UNASSIGNED
R = UNASSIGNED
S = UNASSIGNED
T = UNASSIGNED
U = UNASSIGNED
V = UNASSIGNED
W = UNASSIGNED
X = UNASSIGNED
Y = UNASSIGNED
Z = UNASSIGNED
 

TPC Area Designator (A1)


A= PUERTO RICO
B= NORTHEAST
C= MID-ATLANTIC
D= SOUTHEAST
E= EAST GREAT LAKES
F= CENTRAL GREAT LAKES
G= UPPER MISSISSIPPI VALLEY
H= CENTRAL MISSISSIPPI VALLEY
I= SOUTHERN MISSISSIPPI VALLEY
J= NORTHERN PLAINS
K= CENTRAL PLAINS
L= SOUTHERN PLAINS
M= NORTHERN ROCKIES
N= CENTRAL ROCKIES
O= SOUTHERN ROCKIES
P= PACIFIC NORTHWEST
Q= PACIFIC SOUTHWEST
R= ALASKA 
S= HAWAII
T= GUAM
U= CONUS
V= NORTHERN HEMISPHER (GRID 227)
W= NORTHERN HEMISPHER (GRID 231)
X= MERCATOR, PACFIC (GRID 204)
Y= GULF OF MEXICO
Z= UNASSIGNED


TPC Reference Time Designator (A2 and ii)


A = Day 0   ii = hour (0-23) 
B = Day 1   ii = hour (0-23) 
C = Day 2   ii = hour (0-23) 
D = Day 3   ii = hour (0-23) 
E = Day 4   ii = hour (0-23) 
F = Day 5   ii = hour (0-23) 
G = Day 6   ii = hour (0-23) 
H = Day 7   ii = hour (0-23) 
I = Day 8   ii = hour (0-23) 
J = Day 9   ii = hour (0-23) 
K = Day 10  ii = hour (0-23) 
L = Day 11  ii = hour (0-23) 
M = Day 12  ii = hour (0-23) 
N = Day 13  ii = hour (0-23) 
O = Day 14  ii = hour (0-23) 
P = Storm Surge Precentage 
Q = Storm Surge Exceeding Feet 
R = UNASSIGNED 
S = UNASSIGNED 
T = UNASSIGNED 
U = UNASSIGNED 
V = UNASSIGNED 
W = Weeks  ii = week # (0-99) 
X = Months  ii = month # (0-99) 
Y =  Year ii = year # (0-99) 
Z = Super heading designator ii always = 99