Initialization: 20250515
NCEP GEFS Subseasonal Storm Track Forecast
Week
Ensemble Members
Northern Hemisphere
Regional Map
Week 2
124
N. Pacific/N. America/N. Atlantic
Alaska/Arctic
,
N. Pacific
,
N. America
,
N. Atlantic
Weeks 3-4
31
N. Pacific/N. America/N. Atlantic
Alaska/Arctic
,
N. Pacific
,
N. America
,
N. Atlantic
Week
Ensemble Members
Regional Storminess Index
Regional Storminess Index
Week 2
124
N. Pacific (177.5
o
E-140
o
W, 45
o
N-57.5
o
N)
Alaska (177.5
o
E-140
o
W, 57.5
o
N-70
o
N)
Weeks 3-4
31
N. Pacific (177.5
o
E-140
o
W, 45
o
N-57.5
o
N)
Alaska (177.5
o
E-140
o
W, 57.5
o
N-70
o
N)
NCEP CFSv2 Subseasonal Storm Track Forecast
Week
Ensemble Members
Northern Hemisphere
Regional Map
Week 2
16
N. Pacific/N. America/N. Atlantic
Alaska/Arctic
,
N. Pacific
,
N. America
,
N. Atlantic
Weeks 3-4
16
N. Pacific/N. America/N. Atlantic
Alaska/Arctic
,
N. Pacific
,
N. America
,
N. Atlantic
Week
Ensemble Members
Regional Storminess Index
Regional Storminess Index
Week 2
16
N. Pacific (177.5
o
E-140
o
W, 45
o
N-57.5
o
N)
Alaska (177.5
o
E-140
o
W, 57.5
o
N-70
o
N)
Weeks 3-4
16
N. Pacific (177.5
o
E-140
o
W, 45
o
N-57.5
o
N)
Alaska (177.5
o
E-140
o
W, 57.5
o
N-70
o
N)
GEFS and CFSv2 Ensemble Mean Subseasonal Storm Track Forecast
Week
Ensemble Members
Northern Hemisphere
Regional Map
Week 2
140
N. Pacific/N. America/N. Atlantic
Alaska/Arctic
,
N. Pacific
,
N. America
,
N. Atlantic
Weeks 3-4
47
N. Pacific/N. America/N. Atlantic
Alaska/Arctic
,
N. Pacific
,
N. America
,
N. Atlantic
Week
Ensemble Members
Regional Storminess Index
Regional Storminess Index
Week 2
140
N. Pacific (177.5
o
E-140
o
W, 45
o
N-57.5
o
N)
Alaska (177.5
o
E-140
o
W, 57.5
o
N-70
o
N)
Weeks 3-4
47
N. Pacific (177.5
o
E-140
o
W, 45
o
N-57.5
o
N)
Alaska (177.5
o
E-140
o
W, 57.5
o
N-70
o
N)
