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This page has been revised as of   to detail the dissemination schedule for AIFS data (Set-IX), following operational implementation of AIFS Single v1 on 25 February 2025. These changes will take effect from the 06 UTC run.


This dissemination schedule applies where Pre-Schedule Delivery has not been set. For more information please see Pre-Schedule Delivery

Set I - Control forecast (formerly HRES) and Analysis Data (15-days)

I-i: Atmospheric fields

Forecast Runs (base time)Forecast step frequencyForecast Dissemination scheduleForecast Dissemination stream indicator*
00 UTC
  • 0 to 90 by 1
  • 93  to 144 by 3
  • 150 to 360 by 6
  • 5:45 --> 6:12
  • 6:12 --> 6:27
  • 6:27 --> 7:34
  • S 
  • D
  • D
06 UTC
  • 0 to 90 by 1
  • 93 to 144 by 3
  • 11:45 --> 12:12
  • 12:12 --> 12:27
  • S
  • S
12 UTC
  • 0 to 90 by 1
  • 93 to 144 by 3
  • 150 to 360 by 6
  • 17:45 --> 18:12
  • 18:12 --> 18:27
  • 18:27 --> 19:34
  • S
  • D
  • D
18 UTC
  • 0 to 90 by 1
  • 93 to 144 by 3
  • 23:45 --> 00:12
  • 00:12 --> 00:27
  • S
  • S


Analysis Runs (base time)Analysis Dissemination scheduleForecast Dissemination stream indicator
00 UTC
  • 5:40
  • D
06 UTC
  • 11:40
  • 17:35
  • S
  • D
12 UTC
  • 17:40
  • D
18 UTC
  • 23:40
  • 5:35
  • S
  • D


I-ii: Time series of weather parameters (Post-processed Products)

(dissemination data stream indicator = A)

Weather Parameter ProductsTime available
12 UTC based18:55
00 UTC based06:55

 I-iii Tropical cyclones (Post-processed Products)

(dissemination data stream indicator = C)

Tropical cyclone productsTime available
12 UTC based18:55
00 UTC based06:55

Set II - Control forecast wave (formerly HRES-WAM) and Analysis Data (15-days)

HRES-WAM

Forecast Runs (base time)Forecast step frequencyForecast Dissemination scheduleForecast Dissemination stream indicator
00 UTC
  • 0 to 90 by 1
  • 93  to 144 by 3
  • 150 to 360 by 6
  • 5:45 --> 6:13
  • 6:13 --> 6:27
  • 6:27 --> 7:34
  • Q
  • P
  • P
06 UTC
  • 0 to 90 by 1
  • 93 to 144 by 3
  • 11:45 --> 12:13
  • 12:13 --> 12:27
  • Q
  • Q
12 UTC
  • 0 to 90 by 1
  • 0 to 144 by 3
  • 150 to 360 by 6
  • 17:45 --> 18:13
  • 18:13 --> 18:27
  • 18:27 --> 19:34
  • Q
  • P
  • P
18 UTC
  • 0 to 90 by 1
  • 93 to 144 by 3
  • 23:45 --> 00:13
  • 00:13 --> 00:27
  • Q
  • Q

Set III - Atmospheric model Ensemble 15-day forecast (ENS)

(dissemination data stream indicator = E)


Based Forecast Time 06UTC

Time Available

Based Forecast time 12UTC

Time Available

Based Forecast Time 18UTC

Time Available

Based Forecast time 00UTC

Time Available

Forecast Day 012:4018:4000:4006:40
Forecast Day 112:4418:4400:4406:44
Forecast Day 212:4818:4800:4806:48
Forecast Day 312:5218:5200:5206:52
Forecast Day 10
19:20
07:20
Forecast Day 15
19:40
07:40
Derived products Step 0 to 240
19:41  
07:41
Derived products Step 246 to 360
20:01
08:01

Set IV - Ocean Wave Model Ensemble 15-day forecast (ENS-WAM)

 IV-i: Wave fields

(dissemination data stream indicator = W)

12 UTC based Forecast time00 UTC based Time available12 UTC based Time Available
Forecast Day 007:0019:00
Forecast Day 1007:4019:40
Forecast Day 1508:0020:00
Derived products Step 0 to 24007:4119:41
Derived products Step 246 to 36008:0120:01

IV-ii: Probabilities

(dissemination data stream indicator = U)

12 UTC based Forecast timeTime Available00 UTC based Forecast timeTime available
Forecast Day 019:00Forecast Day 007:00
Forecast Day 1019:40Forecast Day 1007:40
Forecast Day 1520:00Forecast Day 1508:00
Derived products Step 0 to 24019:41Derived products Step 0 to 24007:41
Derived products Step 246 to 36020:01Derived products Step 246 to 36008:01

IV-iii: Extreme Forecast Index & Shift of Tails

(dissemination data stream indicator = U)

12 UTC based Forecast timeTime Available00 UTC based Forecast timeTime available
Forecast Day 019:00Forecast Day 007:00
Forecast Day 1019:40Forecast Day 1007:40
Forecast Day 1520:00Forecast Day 1508:00
Derived products Step 0 to 24019:41Derived products Step 0 to 24007:41
Derived products Step 246 to 36020:01Derived products Step 246 to 36008:01


Set V - Seasonal 7-month forecast (SEAS)

(dissemination data stream indicator = L) 

Forecast timeTime available
Forecast month 1-75th of each month 12:00 UTC

Set VI - Sub-seasonal forecast products (ENS extended)

(dissemination data stream indicator = F for real-time forecasts)

(dissemination data stream indicator = H for re-forecasts)

Forecast productTime available

Real Time Forecast

20:00

Re-forecast21:00 

Set IX - AIFS deterministic forecast

AIFS deterministic products are disseminated in line with the existing IFS schedule (Set I-i).

Forecast run (base time)Forecast step frequencyForecast dissemination schedule
00 UTC0 to 360 by 65:45 --> 7:34
06 UTC0 to 360 by 611:45 --> 13:34
12 UTC0 to 360 by 617:45 --> 19:34
18 UTC0 to 360 by 623:45 --> 01:34

Set X - AIFS ensemble forecast

AIFS ensemble products are disseminated in line with the existing IFS schedule (Set III)


Based Forecast Time 06UTC

Time Available

Based Forecast time 12UTC

Time Available

Based Forecast Time 18UTC

Time Available

Based Forecast time 00UTC

Time Available

Forecast Day 012:4018:4000:4006:40
Forecast Day 112:4418:4400:4406:44
Forecast Day 212:4818:4800:4806:48
Forecast Day 312:5218:5200:5206:52
Forecast Day 10
19:20
07:20
Forecast Day 15
19:40
07:40
Derived products Step 0 to 240
19:41  
07:41
Derived products Step 246 to 360
20:01
08:01

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See also

Real-time data are pushed to users' servers on the schedule shown below. If you need to re-transmit files login to ECPDS.

 File naming convention and format for real-time data


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