Dissemination Times

This page provides the dissemination times for all Jua weather model products.

EPT-1.5 Family

EPT-1.5

Base time (UTC)	Start (UTC)	90 Hours	240 Hours (10d)	480 Hours (20d)
00:00	05:40	05:50	05:57	06:05
06:00	11:40	11:50	11:57	12:05
12:00	17:40	17:50	17:57	19:05
18:00	23:40	23:50	23:57	01:05

EPT-1.5 Early

Base time (UTC)	Start (UTC)	90 Hours	240 Hours (10d)	480 Hours (20d)
00:00	03:15	03:25	03:35	03:40
06:00	09:15	09:25	09:35	09:40
12:00	15:15	15:25	15:35	15:40
18:00	21:15	21:25	21:35	21:40

EPT-2 Family

The first 10 days are in hourly resolution. Between day 10 and 20 in 6h resolution.

EPT-2

Base time (UTC)	Start (UTC)	90 Hours	240 Hours (10d)	480 Hours (20d)
00:00	05:50	06:00	06:15	06:25
06:00	11:50	12:00	12:15	12:25
12:00	17:50	18:00	18:15	18:25
18:00	23:50	00:00	00:15	00:25

EPT-2e

Base time (UTC)	Start (UTC)	90 Hours	240 Hours (10d)	480 Hours (20d)	1440 Hours (60d)
00:00	05:55	06:15	06:50	06:55	07:45
06:00	11:55	12:15	12:50	13:00	N/A
12:00	17:55	18:15	18:50	18:55	N/A
18:00	23:55	00:15	00:50	01:00	N/A

EPT-2 Early

Base time (UTC)	Start (UTC)	90 Hours	240 Hours (10d)	480 Hours (20d)
00:00	03:15	03:25	03:35	03:40
06:00	09:15	09:25	09:35	09:40
12:00	15:15	15:25	15:35	15:40
18:00	21:15	21:25	21:35	21:40

EPT-2 RR (Research Preview)

Base time (UTC)	Start (UTC)	48 Hours
00:00	01:50	02:00
01:00	02:50	03:00
02:00	03:50	04:00
03:00	04:50	05:00
04:00	05:50	06:00
05:00	06:50	07:00
06:00	07:50	08:00
07:00	08:50	09:00
08:00	09:50	10:00
09:00	10:50	11:00
10:00	11:50	12:00
11:00	12:50	13:00
12:00	13:50	14:00
13:00	14:50	15:00
14:00	15:50	16:00
15:00	16:50	17:00
16:00	17:50	18:00
17:00	18:50	19:00
18:00	19:50	20:00
19:00	20:50	21:00
20:00	21:50	22:00
21:00	22:50	23:00
22:00	23:50	00:00
23:00	00:50	01:00

EPT-2 HRRR (Research Preview)

Base time (UTC)	Start (UTC)	48 Hours
00:00	01:55	02:25
01:00	02:55	03:25
02:00	03:55	04:25
03:00	04:55	05:25
04:00	05:55	06:25
05:00	06:55	07:25
06:00	07:55	08:25
07:00	08:55	09:25
08:00	09:55	10:25
09:00	10:55	11:25
10:00	11:55	12:25
11:00	12:55	13:25
12:00	13:55	14:25
13:00	14:55	15:25
14:00	15:55	16:25
15:00	16:55	17:25
16:00	17:55	18:25
17:00	18:55	19:25
18:00	19:55	20:25
19:00	20:55	21:25
20:00	21:55	22:25
21:00	22:55	23:25
22:00	23:55	00:25
23:00	00:55	01:25

EPT-2 Reasoning

Base time (UTC)	Start (UTC)	90 Hours	240 Hours (10d)	480 Hours (20d)
00:00	05:40	05:55	06:45	06:45
06:00	11:40	11:55	12:45	12:45
12:00	17:40	17:55	18:45	18:45
18:00	23:40	23:55	00:45	00:45

EPT-2.1 Helios

Solar-only nowcast for Europe. 48h horizon, updated every 30 minutes.

Base time (UTC)	Start (UTC)	48 Hours
00:00	00:30	01:00
00:30	01:00	01:30
01:00	01:30	02:00
01:30	02:00	02:30
02:00	02:30	03:00
02:30	03:00	03:30
03:00	03:30	04:00
03:30	04:00	04:30
04:00	04:30	05:00
04:30	05:00	05:30
05:00	05:30	06:00
05:30	06:00	06:30
06:00	06:30	07:00
06:30	07:00	07:30
07:00	07:30	08:00
07:30	08:00	08:30
08:00	08:30	09:00
08:30	09:00	09:30
09:00	09:30	10:00
09:30	10:00	10:30
10:00	10:30	11:00
10:30	11:00	11:30
11:00	11:30	12:00
11:30	12:00	12:30
12:00	12:30	13:00
12:30	13:00	13:30
13:00	13:30	14:00
13:30	14:00	14:30
14:00	14:30	15:00
14:30	15:00	15:30
15:00	15:30	16:00
15:30	16:00	16:30
16:00	16:30	17:00
16:30	17:00	17:30
17:00	17:30	18:00
17:30	18:00	18:30
18:00	18:30	19:00
18:30	19:00	19:30
19:00	19:30	20:00
19:30	20:00	20:30
20:00	20:30	21:00
20:30	21:00	21:30
21:00	21:30	22:00
21:30	22:00	22:30
22:00	22:30	23:00
22:30	23:00	23:30
23:00	23:30	00:00
23:30	00:00	00:30

EPT-2.1 Europa

High-resolution regional European ensemble (successor to EPT-2 HRRR). 48h horizon, hourly runs.

Base time (UTC)	Start (UTC)	48 Hours
00:00	01:55	02:25
01:00	02:55	03:25
02:00	03:55	04:25
03:00	04:55	05:25
04:00	05:55	06:25
05:00	06:55	07:25
06:00	07:55	08:25
07:00	08:55	09:25
08:00	09:55	10:25
09:00	10:55	11:25
10:00	11:55	12:25
11:00	12:55	13:25
12:00	13:55	14:25
13:00	14:55	15:25
14:00	15:55	16:25
15:00	16:55	17:25
16:00	17:55	18:25
17:00	18:55	19:25
18:00	19:55	20:25
19:00	20:55	21:25
20:00	21:55	22:25
21:00	22:55	23:25
22:00	23:55	00:25
23:00	00:55	01:25

AIFS Single

20 day forecast horizon with six-hourly temporal resolution.

Base time (UTC)	Start (UTC)	480 Hours (20d)
00:00	05:40	05:50
06:00	11:40	11:50
12:00	17:40	17:50
18:00	23:40	23:50

Aurora

20 day forecast horizon with six-hourly temporal resolution.

Base time (UTC)	Start (UTC)	480 Hours (20d)
00:00	05:50	06:00
06:00	11:50	12:00
12:00	17:50	18:00
18:00	23:50	00:00

NWP models

The tables below show the time at which 90% of recent forecast steps were available via the standard API tier (early-access subscribers see them up to 30 minutes earlier). Values are derived from observed dissemination over the last 14 days (4 days for ECMWF ENS, which moved to a new pipeline on 2026-05-19), capped at the dissemination SLA configured in jua-query-v2 and at 1 hour above the worst run observed in the last 3 days, and refreshed periodically.

EC IFS

ECMWF IFS HRES, deterministic. 360h horizon on 00/12 runs, 144h on 06/18.

Base time (UTC)	Start (UTC)	90 Hours	144 Hours (6d)	240 Hours (10d)	360 Hours (15d)
00:00	06:20	06:50	06:50	07:00	07:10
06:00	12:10	12:40	12:40	N/A	N/A
12:00	18:30	19:00	19:00	19:10	19:10
18:00	00:20	00:20	00:20	N/A	N/A

EC ENS

ECMWF Ensemble (51 members). 360h horizon on 00/12 runs, 144h on 06/18.

Base time (UTC)	Start (UTC)	90 Hours	144 Hours (6d)	240 Hours (10d)	360 Hours (15d)
00:00	07:00	07:20	07:20	07:40	07:50
06:00	13:00	13:10	13:20	N/A	N/A
12:00	18:50	19:00	19:00	19:20	19:30
18:00	02:10	02:10	02:20	N/A	N/A

EC AIFS

ECMWF AIFS Single, ML-based. 480h (20d) horizon at 6h cadence.

Base time (UTC)	Start (UTC)	90 Hours	240 Hours (10d)	360 Hours (15d)	480 Hours (20d)
00:00	06:10	06:10	06:10	06:10	06:10
06:00	12:00	12:00	12:00	12:00	12:00
12:00	18:10	18:10	18:10	18:10	18:10
18:00	00:10	00:10	00:10	00:10	00:10

EC46

ECMWF Extended Range (46 days). Single daily run at 00 UTC.

Base time (UTC)	Start (UTC)	240 Hours (10d)	480 Hours (20d)	840 Hours (35d)	1104 Hours (46d)
00:00	13:20	14:00	14:10	14:20	14:30

ICON-D2

DWD ICON-D2 (regional, central Europe). 48h horizon, eight runs/day.

Base time (UTC)	Start (UTC)	48 Hours
00:00	03:10	03:20
03:00	06:10	06:20
06:00	09:10	09:20
09:00	12:10	12:20
12:00	15:10	15:20
15:00	18:10	18:20
18:00	21:10	21:20
21:00	00:10	00:20

ICON-EU

DWD ICON-EU (regional, Europe). Main runs (00, 06, 12, 18) cover 120h; intermediate runs (03, 09, 15, 21) cover 48h.

Base time (UTC)	Start (UTC)	48 Hours	90 Hours	120 Hours (5d)
00:00	04:30	04:30	04:30	04:30
03:00	07:00	07:00	N/A	N/A
06:00	10:30	10:30	10:30	10:30
09:00	13:00	13:00	N/A	N/A
12:00	16:30	16:30	16:30	16:30
15:00	19:00	19:00	N/A	N/A
18:00	22:30	22:30	22:30	22:30
21:00	01:00	01:00	N/A	N/A

ICON Global

DWD ICON-Global. 180h horizon on 00/12 runs, 120h on 06/18.

Base time (UTC)	Start (UTC)	90 Hours	120 Hours (5d)	144 Hours (6d)	180 Hours (7.5d)
00:00	04:50	04:50	04:50	04:50	04:50
06:00	10:50	10:50	10:50	N/A	N/A
12:00	16:50	16:50	16:50	16:50	16:50
18:00	22:50	22:50	22:50	N/A	N/A

GFS

NOAA GFS deterministic. 384h (16d) horizon at 0.25° resolution.

Base time (UTC)	Start (UTC)	48 Hours	90 Hours	144 Hours (6d)	240 Hours (10d)	384 Hours (16d)
00:00	04:20	04:30	04:50	05:00	05:20	06:00
06:00	10:10	10:30	10:40	11:00	11:20	12:00
12:00	16:10	16:30	16:40	16:50	17:20	18:00
18:00	22:20	22:40	22:50	23:00	23:20	00:00