src/lib/utils/maps-domain.ts

@@ -46,6 +46,9 @@ const modelDomainCandidates: Record<string, string[]> = {
 	// MeteoSwiss (CH2 covers a wider area than CH1)
 	meteoswiss_icon_seamless: ['meteoswiss_icon_ch2'],
 
+	// CHMI Czech Republic (Central Europe is the widest native domain)
+	chmi_aladin_seamless: ['chmi_aladin_seamless', 'chmi_aladin_central_europe_2km'],
+
 	// JMA Japan
 	jma_seamless: ['jma_seamless', 'jma_gsm'],
 

src/routes/weather/options.ts

@@ -69,6 +69,12 @@ export const modelGroups: WeatherModelGroup[] = [
 				resolution: '1-2 km',
 				update: 'every 3 h'
 			},
+			{
+				value: 'chmi_aladin_seamless',
+				label: 'CHMI Aladin Seamless',
+				resolution: '1-2.3 km',
+				update: 'every 6 h'
+			},
 			{ value: 'jma_seamless', label: 'JMA Seamless', resolution: '5-55 km', update: 'every 3 h' },
 			{ value: 'gem_seamless', label: 'GEM Seamless', resolution: '1-15 km', update: 'every 6 h' }
 		]
@@ -252,6 +258,24 @@ export const modelGroups: WeatherModelGroup[] = [
 			}
 		]
 	},
+	{
+		value: 'chmi',
+		label: 'CHMI Czech Republic',
+		models: [
+			{
+				value: 'chmi_aladin_central_europe_2km',
+				label: 'CHMI Aladin Central Europe 2km',
+				resolution: '2.3 km',
+				update: 'every 6 h'
+			},
+			{
+				value: 'chmi_aladin_cz_1km',
+				label: 'CHMI Aladin CZ 1km',
+				resolution: '1 km',
+				update: 'every 6 h'
+			}
+		]
+	},
 	{
 		value: 'cmc_gem',
 		label: 'GEM Canada',