Updated every day with a 21-day delay!
The latest initial date is 20240328.
Initial month:
Nov - Mar: Northern Hemisphere
Apr - Oct: Southern Hemisphere
Centre (forecast length):
BoM (pentad1-12)
CMA (pentad1-9)
ECCC (pentad1-6)
ECMWF (pentad1-6)
HMCR (unavailable)
ISAC-CNR (pentad1-6)
JMA (pentad1-6)
KMA (pentad1-11)
METFR (pentad1-12)
NCEP (pentad1-8)
UKMO (pentad1-11)
Initial days of forecasts:
| centre |
Sun |
Mon |
Tue |
Wed |
Thu |
Fri |
Sat |
| BoM |
|
|
|
|
|
|
|
| CMA |
|
|
|
|
|
|
|
| ECMWF |
|
|
|
|
|
|
|
| ECCC |
|
|
|
|
|
|
|
| HMCR *1 |
|
|
|
|
|
|
|
| ISAC-CNR *2 |
|
|
|
|
|
|
|
| JMA *3 |
|
|
|
|
|
|
|
| KMA |
|
|
|
|
|
|
|
| METFR *4 |
|
|
|
|
|
|
|
| NCEP |
|
|
|
|
|
|
|
| UKMO |
|
|
|
|
|
|
|
*1 HMCR: Wed (-31 May 2017); Thu (08 Jun. 2017-)
*2 ISAC-CNR: Mon (-16 Jan. 2017); Thu (19 Jan. 2017-)
*3 JMA: Tue,Wed (-15 Mar. 2017); Wed (22 Mar. 2017-)
*4 METFR: 1st of each month (-Feb 2016), Thu (Mar. 2017-)
Initial time :
Year.Month
Day
Lead time:
Pentad1 (+1-5 days)
Pentad2 (+6-10 days)
Pentad3 (+11-15 days)
Pentad4 (+16-20 days)
Pentad5 (+21-25 days)
Pentad6 (+26-30 days)
Pentad7 (+31-35 days)
Pentad8 (+36-40 days)
Pentad9 (+41-45 days)
Pentad10 (+46-50 days)
Pentad11 (+51-55 days)
Pentad12 (+56-60 days)
Go to the SSW foreacsts
Go to the S2S Museum (top)
|
![]()
|