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3.6.2  Tåge, tågedis og tør-dis ................................................................ 181
                  3.6.3  Advektions- og fronttåge ............................................................. 183

                  3.6.4  Sigtbarhed ved tågedis, sne, røg, støv og sandfygning.................. 184

               3.7  Luftmasser ......................................................................... 187

                  3.7.1  Ændring af en luftmasse .............................................................. 188

              3.8  Fronter .............................................................................. 193

                  3.8.1  Vandrende lavtryk ....................................................................... 195

                  3.8.2  Frontskyer ................................................................................... 196
                            Varmfronten ........................................................................................... 198

                            Koldfronten ............................................................................................. 199
                            Okklusion ................................................................................................ 199

               3.9  Farligt flyvevejr .................................................................. 200

                  3.9.1  Vejrfænomener og SIGMETS ........................................................ 202

                  3.9.2  Isdannelse ................................................................................... 204
                             Symboler på vejrkort .............................................................................. 208

                  3.9.3  Torden ......................................................................................... 208

                  3.9.4  Flyvning i bjergområder ............................................................... 214
              3.10.  . Klimatologi ..................................................................... 215


              3.11.  . Meteorologisk information ............................................. 217
                  3.11.1  Vejrinformation til forberedelse af flyvning ................................ 218

                  3.11.2  Forkortelser – vejrfænomener .................................................... 221

                  3.11.3   Forkortelser og symboler på Significant Weather Chart .............. 222

                  3.11.4  General Aviation Forecast .......................................................... 224

                  3.11.5  Observationer – aktuelt vejr ....................................................... 225
                  3.11.6  Koder METAR, TREND, TAF ......................................................... 226

                             Metar .................................................................................................... 227

                             Trend .................................................................................................... 230
                             TAF........................................................................................................ 231
                             VMC ...................................................................................................... 232

                             Vejroplysninger under flyvningen .......................................................... 233















           Flyveteori PPL(A)(UL)/LAPL             Henning Andersen, Midtjysk Flyveskole© 2019

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