INCA-CH seamless nowcasting system, example data
Description
INCA-CH seamless nowcasting system
A new generation of nowcasting systems is in development at MeteoSwiss (since 2025). For this reason only a subset of the current INCA-CH parameters will be available trough our open data provision. During the transition phase to the new system data push deliveries of all current parameters will be guaranteed. However, a change is to be planned (between 2027 and 2028): parameters will be renamed, added and/or removed. Information on this will follow as soon as it becomes available.
|
Parameter |
Description |
Units |
Update frequency |
Forecast range |
Availability after |
Output granularity |
|
RR |
Precipitation quantitative |
mm/h |
10 min |
0-6 h |
7-10 min |
10 min |
|
RR_ext* |
Precipitation quantitative extended forecast |
mm/h |
10 min |
0-28/33h |
8-11 min |
10 min |
|
RP |
Precipitation qualitative |
mm/h |
5 min |
0-6 h |
4-5 min |
5 min |
|
RP_ext* |
Precipitation qualitative extended forecast |
mm/h |
5 min |
0-28/33h |
5-6 min |
5 min |
|
RS |
Snowfall quantitative (based on CombiPrecip) |
mm/h |
10 min |
0-6 h |
5-6 min |
10 min |
|
RS_ext* |
Snowfall quantitative extended forecast (based on CombiPrecip) |
mm/h |
10 min |
0-28/33h |
6-7 min |
10 min |
|
PN |
Snowfall qualitative (based on radar only) |
mm/h |
5 min |
0-6 h |
5-6 min |
5 min |
|
PN_ext* |
Snowfall qualitative extended forecast (based on radar only) |
mm/h |
5 min |
0-28/33h |
6-7 min |
5 min |
|
PT |
Precipitation type for RR: |
classes (0-5) |
10 min |
0-6 h |
7-10 min |
10 min |
|
PT_ext* |
Precipitation type for RR_ext, extended forecast: |
classes (0-5) |
10 min |
0-28/33h |
8-11 min |
10 min |
|
NT |
Precipitation type for RP: |
classes (0-5) |
5 min |
0-6 h |
4-5 min |
5 min |
|
NT_ext* |
Precipitation type for RP_ext extended forecast: |
classes (0-5) |
5 min |
0-28/33h |
5-6 min |
5 min |
|
SH_BK_24, SH_BK_12 |
New snow accumulation: past 24h or 12h |
cm |
10 min |
0 h |
15-20 min |
- |
|
SH_FC_06 |
6 h new snow accumulation forecast |
cm |
10 min |
6 h |
15-20 min |
- |
|
ZS |
Snowfall line |
m |
10 min |
0-6 h |
13-16 min |
60 min |
|
Z0 |
Zero degree isotherm |
m |
10 min |
0-6 h |
13-16 min |
60 min |
|
FF, WG, DD, UU, VV |
Wind speed, wind gust and wind direction: |
m/s, ° |
10 min |
0-6 h |
17-19 min |
60 min |
|
FF_10min, WG_10min, DD_10min, UU_10min, VV_10min |
Wind speed, wind gust and wind direction: |
m/s, ° |
10 min |
0-6h |
17-19 min |
10 min |
|
TT |
2 m temperature |
°C |
10 min |
0-6 h |
13-16 min |
60 min |
|
TT_ext |
2 m temperature extended forecast |
°C |
10 min |
0-28/33 h |
14-17 min |
60 min |
|
TD, RH |
2 m dew point and humidity |
°C, % |
10 min |
0-6 h |
13-16 min |
60 min |
|
TD_ext, RH_ext |
2 m dew point and humidity extended forecast |
°C, % |
10 min |
0-28/33 h |
14-17 min |
60 min |
|
TG |
Soil surface temperature |
°C |
10 min |
0-6 h |
13-16 min |
60 min |
|
CT, CL, CM, CH |
Cloud cover: total, low, medium, high |
% |
10 min |
0-6h |
5-10 min |
10 min |
|
SU |
Relative sunshine duration |
% |
10 min |
0-6h |
5-10 min |
10 min |
|
LI |
Lightning counts analysis |
#flash/ 7x7 km²/10 min |
10 min |
0 h |
5 min |
- |
|
CN |
Convective inhibition |
J/kg |
10 min |
0 h |
14-17 min |
- |
|
CP |
Convective available potential energy |
J/kg |
10 min |
0 h |
14-17 min |
- |
nx = 710
ny = 640
resolution = 1000 [m]
Coordinates of lower left pixel in Swiss Coordinates CH1903/LV03:
x0 = 255500 [m]
y0 = -159500 [m]
Example how to read INCA netcdf data: https://inca-examples.readthedocs.io/
INCA-CH digital elevation Model here: https://zenodo.org/record/7614565
Files
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