{"reglas":{"fuentes":[{"papel":"medicion","nombre":"Servicio Meteorológico Nacional (CONAGUA), red sinóptica de observatorios, publicada en WIS2 de la OMM","cada":"hora","nota":"Manda sobre todo lo demás. Observatorios con personal del SMN; el SMN publica cada hora unos 11 minutos después de la hora. Las estaciones automáticas de 10 minutos de CONAGUA no publican datos (730 de 730 en error al 9-nov-2026); una sonda diaria las vigila y, si vuelven, la medición migra."},{"papel":"testigo","nombre":"METAR de SENEAM, vía aviationweather.gov (NOAA)","cada":"hora (minuto 40) y especiales","nota":"Otra institución y otros instrumentos. Sirve para cotejar, nunca para sustituir."},{"papel":"pronostico","nombre":"Open-Meteo (modelo numérico)","cada":"15 minutos","nota":"No es medición. Se pide en el punto de cada observatorio y se compara contra la medición: error del modelo = modelo − medición, con el valor que el modelo daba para cada hora en la última consulta anterior a esa hora."}],"verificacion":["Integridad: el archivo BUFR debe estar completo (BUFR…7777, longitud declarada), ser de la estación y la hora pedidas; se guarda con su huella SHA-256 y el mensaje original.","Completitud: cada hora se dice cuántas de las 32 llegaron y cuáles faltan.","Rangos: la temperatura debe caer entre el récord de mínima y el de máxima del propio observatorio para ese mes (Base de Datos Climatológica Nacional del SMN); el rocío no puede superar a la temperatura; la humedad debe concordar con temperatura y rocío (Magnus, ±8 puntos); presión al nivel del mar entre 870 y 1085 hPa; viento entre 0 y 75 m/s.","Salto: respecto de la lectura anterior (hasta 3 h antes), la temperatura no puede cambiar más de 8 °C + 2 °C por hora transcurrida, ni la presión más de 6 hPa por hora. Tampoco se deja pasar sin marca una lectura con temperatura, rocío y humedad idénticos a los de la hora anterior (posible lectura repetida).","Testigo: la diferencia con el aeropuerto, con el aeropuerto llevado a la altura del observatorio (6.5 °C por km), no puede apartarse más de 4 °C de la diferencia típica de ese par (mediana de 30 días); con menos de 48 cotejos la típica es 0 y la tolerancia 6 °C. Solo hay testigo con un aeropuerto a 50 km o menos y 400 m o menos de desnivel.","Lo que no pasa se marca y se muestra marcado. Nunca se borra ni se rellena."],"aviso_records":"Los récords provienen del SMN tal cual. Algunos son dudosos (por ejemplo, 45.5 °C en enero en Saltillo); un récord dudoso solo vuelve más permisivo el rango, nunca marca una lectura buena.","entrega":"La entrega en vivo mide otra cosa: de que una lectura queda guardada en el observatorio a que el navegador confirma que la recibió, en una página visible. No mide la antigüedad de la medición. Nunca se presentan juntas como «clima por segundo»."},"estaciones":[{"clave":"01","estado":"Aguascalientes","capital":"Aguascalientes","wmo":"76571","estacion":"AGUASCALIENTES (OBS)","clicom":"1001","lat":21.85112,"lon":-102.29124,"altitud_m":1877,"km_capital":3.8,"icao":"MMAS","aeropuerto":"Aguascalientes Arpt","km_aeropuerto":16.8,"desnivel_aeropuerto_m":-11,"sin_testigo":null,"tmax_record":[30.2,33.2,38,37.8,40,39.2,36.2,36.4,35.2,34.6,34.8,29.9],"tmin_record":[-9,-5.2,-2.4,-0.3,4.5,1.2,1.4,3,0,0.5,-4.7,-6],"records_desde":1878},{"clave":"02","estado":"Baja California","capital":"Mexicali","wmo":"76040","estacion":"EJIDO NUEVO LEON (OBS)","clicom":"2163","lat":32.41455,"lon":-115.19264,"altitud_m":12,"km_capital":33.7,"icao":"MMML","aeropuerto":"Mexicali 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