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Pilots will mostly try to fly under or above clouds.",{"data":1098,"content":1099,"nodeType":447},{},[1100],{"data":1101,"marks":1102,"value":1104,"nodeType":19},{},[1103],{"type":28},"1. FEW clouds",{"data":1106,"content":1107,"nodeType":359},{},[1108,1127,1137],{"data":1109,"content":1110,"nodeType":318},{},[1111],{"data":1112,"content":1113,"nodeType":42},{},[1114,1118,1123],{"data":1115,"marks":1116,"value":1117,"nodeType":19},{},[],"Coverage: ",{"data":1119,"marks":1120,"value":1122,"nodeType":19},{},[1121],{"type":28},"1–2 oktas",{"data":1124,"marks":1125,"value":1126,"nodeType":19},{},[]," (very small portion of the sky)",{"data":1128,"content":1129,"nodeType":318},{},[1130],{"data":1131,"content":1132,"nodeType":42},{},[1133],{"data":1134,"marks":1135,"value":1136,"nodeType":19},{},[],"Meaning: A few scattered clouds, no operational impact",{"data":1138,"content":1139,"nodeType":318},{},[1140],{"data":1141,"content":1142,"nodeType":42},{},[1143,1147,1152,1156,1161],{"data":1144,"marks":1145,"value":1146,"nodeType":19},{},[],"At ",{"data":1148,"marks":1149,"value":1151,"nodeType":19},{},[1150],{"type":28},"1,500 ft",{"data":1153,"marks":1154,"value":1155,"nodeType":19},{},[],", this is a ",{"data":1157,"marks":1158,"value":1160,"nodeType":19},{},[1159],{"type":28},"low cloud layer",{"data":1162,"marks":1163,"value":1164,"nodeType":19},{},[],", but very thin",{"data":1166,"content":1167,"nodeType":447},{},[1168],{"data":1169,"marks":1170,"value":1172,"nodeType":19},{},[1171],{"type":28},"2. BROKEN clouds",{"data":1174,"content":1175,"nodeType":359},{},[1176,1194,1209],{"data":1177,"content":1178,"nodeType":318},{},[1179],{"data":1180,"content":1181,"nodeType":42},{},[1182,1185,1190],{"data":1183,"marks":1184,"value":1117,"nodeType":19},{},[],{"data":1186,"marks":1187,"value":1189,"nodeType":19},{},[1188],{"type":28},"5–7 oktas",{"data":1191,"marks":1192,"value":1193,"nodeType":19},{},[]," (most of the sky covered)",{"data":1195,"content":1196,"nodeType":318},{},[1197],{"data":1198,"content":1199,"nodeType":42},{},[1200,1204],{"data":1201,"marks":1202,"value":1203,"nodeType":19},{},[],"Meaning: This is considered a ",{"data":1205,"marks":1206,"value":1208,"nodeType":19},{},[1207],{"type":28},"ceiling",{"data":1210,"content":1211,"nodeType":318},{},[1212],{"data":1213,"content":1214,"nodeType":42},{},[1215,1218,1223,1227,1232],{"data":1216,"marks":1217,"value":1146,"nodeType":19},{},[],{"data":1219,"marks":1220,"value":1222,"nodeType":19},{},[1221],{"type":28},"3,500 ft",{"data":1224,"marks":1225,"value":1226,"nodeType":19},{},[],", this is the ",{"data":1228,"marks":1229,"value":1231,"nodeType":19},{},[1230],{"type":28},"main cloud layer",{"data":1233,"marks":1234,"value":1235,"nodeType":19},{},[]," you care about for IFR",{"data":1237,"content":1238,"nodeType":50},{},[1239],{"data":1240,"marks":1241,"value":1242,"nodeType":19},{},[],"Temperature",{"data":1244,"content":1245,"nodeType":42},{},[1246,1250,1255,1259,1264,1268,1273],{"data":1247,"marks":1248,"value":1249,"nodeType":19},{},[],"Every ATIS report includes a ",{"data":1251,"marks":1252,"value":1254,"nodeType":19},{},[1253],{"type":28},"temperature and dew point",{"data":1256,"marks":1257,"value":1258,"nodeType":19},{},[]," value.\nThe ",{"data":1260,"marks":1261,"value":1263,"nodeType":19},{},[1262],{"type":28},"dew point",{"data":1265,"marks":1266,"value":1267,"nodeType":19},{},[]," is the temperature at which the air becomes fully saturated, meaning moisture in the air begins to condense into ",{"data":1269,"marks":1270,"value":1272,"nodeType":19},{},[1271],{"type":28},"mist, fog, or clouds",{"data":1274,"marks":1275,"value":1276,"nodeType":19},{},[],". This value helps pilots understand how close the atmosphere is to forming visibility‑reducing weather.",{"data":1278,"content":1279,"nodeType":42},{},[1280,1284,1289,1293,1298],{"data":1281,"marks":1282,"value":1283,"nodeType":19},{},[],"For example, when the ATIS at Rotterdam Airport (EHRD) reports:\n",{"data":1285,"marks":1286,"value":1288,"nodeType":19},{},[1287],{"type":28},"“Temperature 18, dew point 12”",{"data":1290,"marks":1291,"value":1292,"nodeType":19},{},[],",\nit means the air is still dry enough that fog is unlikely.\nHowever, when the temperature and dew point move closer together (for example 12\u002F11), the risk of ",{"data":1294,"marks":1295,"value":1297,"nodeType":19},{},[1296],{"type":28},"fog, mist, or low visibility",{"data":1299,"marks":1300,"value":1301,"nodeType":19},{},[]," increases significantly.",{"data":1303,"content":1304,"nodeType":50},{},[1305],{"data":1306,"marks":1307,"value":1308,"nodeType":19},{},[],"Transition level ",{"data":1310,"content":1311,"nodeType":42},{},[1312,1315,1320,1324,1329,1333,1338],{"data":1313,"marks":1314,"value":1249,"nodeType":19},{},[],{"data":1316,"marks":1317,"value":1319,"nodeType":19},{},[1318],{"type":28},"transition level",{"data":1321,"marks":1322,"value":1323,"nodeType":19},{},[],", which is the altitude where aircraft change their altimeter setting from the local ",{"data":1325,"marks":1326,"value":1328,"nodeType":19},{},[1327],{"type":28},"QNH",{"data":1330,"marks":1331,"value":1332,"nodeType":19},{},[]," to the standard pressure setting of ",{"data":1334,"marks":1335,"value":1337,"nodeType":19},{},[1336],{"type":28},"1013 hPa",{"data":1339,"marks":1340,"value":1341,"nodeType":19},{},[],". This is important because aircraft flying higher in controlled airspace must all use the same pressure reference to maintain safe vertical separation. Below the transition level, pilots use QNH to ensure their altitude matches the airport elevation; above it, they use standard pressure to align with other aircraft.",{"data":1343,"content":1344,"nodeType":42},{},[1345,1348,1353,1357,1362,1366,1371],{"data":1346,"marks":1347,"value":1283,"nodeType":19},{},[],{"data":1349,"marks":1350,"value":1352,"nodeType":19},{},[1351],{"type":28},"“Transition level 50”",{"data":1354,"marks":1355,"value":1356,"nodeType":19},{},[],",\nit means that aircraft climbing out of Rotterdam must switch their altimeter from QNH to ",{"data":1358,"marks":1359,"value":1361,"nodeType":19},{},[1360],{"type":28},"standard 1013 hPa",{"data":1363,"marks":1364,"value":1365,"nodeType":19},{},[]," once passing ",{"data":1367,"marks":1368,"value":1370,"nodeType":19},{},[1369],{"type":28},"FL50",{"data":1372,"marks":1373,"value":1374,"nodeType":19},{},[],". This ensures that all aircraft cruising above that level use the same pressure reference.",{"data":1376,"content":1377,"nodeType":42},{},[1378],{"data":1379,"marks":1380,"value":1381,"nodeType":19},{},[],"Below transition level ATC instructions are in FEET instead of a flightlevel.",{"data":1383,"content":1384,"nodeType":50},{},[1385],{"data":1386,"marks":1387,"value":1388,"nodeType":19},{},[],"Other information",{"data":1390,"content":1391,"nodeType":42},{},[1392],{"data":1393,"marks":1394,"value":1395,"nodeType":19},{},[],"Next to the standard information there can be additional information like the work in progress near bravo but it could also contain information about birds in the area. Therefore it's always a good idea to listen to the entire ATIS information and if there is any unclarity you should request the delivery to clarify a message. ","document","A short guide on the ATIS information",[1399,8,1400],"Weather","Flight Operations","2026-07-03T14:46:42.571Z","2026-07-03T15:49:39.376Z",1784271102893]