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 only for already existing users. However, a change is to be planned (probably in 2027): 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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