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Odbor letecké meteorologie

Předpověď vhodných podmínek pro plachtařské a balónové létání

 
 
Convection conditions forecast for balloning and gliding in Plzen area
  (the spot model elevation  1132 ft msl)
 
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|      |                  |                  |             |       |Height of  |     |     |     |           |
| Term |    Ballooning    |     Gliding      |Base and top |Type of|cloudless  |     |     |     |Atmospheric|
|      |                  |                  |of convective| conv. |convection |  T  | Tc  | Tp  |instability|
|      |                  |                  |  clouds     |clouds.|  above    |     |     |     |indicators |
|------|-------------------------------------|-------------|       |2000 ft msl|     |     |     |-----------|
| YYGG |  Favorable conditions (yes/no/?)    | Base | Top  |       |           |     |     |     |  Fi |Sl850|
|------|-------------------------------------|------|------|-------|-----------|-----|-----|-----|-----|-----|
| UTC  |Surface|Convection|Surface|Convection|  hft |  hft |Cu/Cb/*|    hft    |deg.C|deg.C|deg.C|  -  |  -  |
|      | wind  |          |  wind |          |      |      |       |           |     |     |     |     |     |
|------------------------------------------------------------------------------------------------------------|
| 2803 |        yes       |  yes  |    no    |   46 |  210 |       |           | 13.1| 21.4| -8.3|  -7 |   0 |
| 2804 |        yes       |  yes  |    no    |   42 |  194 |       |           | 13.2| 20.6| -7.4|  -6 |   1 |
| 2805 |        yes       |  yes  |    no    |   42 |  184 |       |           | 13.2| 20.6| -7.4|  -5 |   1 |
| 2806 |        yes       |  yes  |    no    |   41 |  182 |       |           | 13.3| 20.3| -7.0|  -4 |   1 |
| 2807 |        yes       |  yes  |    no    |   38 |  176 |       |           | 14.3| 19.8| -5.5|  -4 |   1 |
| 2808 |        yes       |  yes  |    no    |   34 |  175 |       |           | 15.9| 19.2| -3.3|  -4 |   1 |
| 2809 |  yes  |    ?     |  yes  |    no    |   33 |  158 |       |     24    | 17.1| 18.9| -1.8|  -4 |   1 |
| 2810 |  yes  |    ?     |  yes  |    ?     |   32 |  161 |  TCu  |           | 18.1| 19.0| -0.9|  -4 |   1 |
| 2811 |  yes  |    no    |  yes  |   yes!   |   29 |  158 |  TCu  |           | 18.9| 18.5|  0.4|  -4 |   1 |
| 2812 |  yes  |    no    |  yes  |   yes!   |   32 |  165 |  TCu  |           | 19.6| 19.3|  0.3|  -5 |   0 |
| 2813 |  yes  |    no    |  yes  |   yes!   |   38 |  180 |  TCu  |           | 20.1| 20.4| -0.3|  -5 |  -0 |
| 2814 |  yes  |    no    |  yes  |   yes!   |   39 |  185 |  TCu  |           | 20.3| 20.6| -0.3|  -5 |  -0 |
| 2815 |  yes  |    no    |  yes  |   yes!   |   39 |  184 |  TCu  |           | 20.3| 20.6| -0.3|  -5 |  -0 |
| 2816 |   ?   |    no    |  yes  |   yes!   |   36 |  190 |  TCu  |           | 20.0| 20.3| -0.3|  -6 |   0 |
| 2817 |  no   |   yes    |  yes  |    no    |   40 |  184 |       |     21    | 18.2| 20.8| -2.6|  -6 |  -0 |
| 2818 |  no   |   yes    |  yes  |    no    |   37 |  199 |       |           | 17.4| 20.4| -3.0|  -5 |  -0 |
| 2819 |  no   |   yes    |  yes  |    no    |   35 |  152 |       |           | 17.1| 19.8| -2.7|  -5 |  -1 |
|------------------------------------------------------------------------------------------------------------|
| 2903 |   ?   |   yes    |  yes  |    no    |   61 |  352 |       |           | 13.1| 24.7|-11.6|   1 |  -4 |
| 2904 |        yes       |  yes  |    no    |   25 | stab |       |           | 13.6| 16.0| -2.4|   2 |  -4 |
| 2905 |        yes       |  yes  |    no    |   22 |   32 |       |           | 14.4| 15.6| -1.2|   0 |  -2 |
| 2906 |        yes       |  yes  |    no    |   24 | stab |       |     22    | 14.8| 15.9| -1.1|  -1 |   0 |
| 2907 |   ?   |   yes    |  yes  |    no    |   24 |   63 |       |     22    | 14.9| 16.0| -1.1|  -2 |   1 |
| 2908 |  no   |   yes    |  yes  |    no    |   22 | stab |       |     21    | 14.7| 15.8| -1.1|  -3 |   2 |
| 2909 |  no   |    no    |   ?   |   yes    |   24 |   56 |   *   |           | 14.2| 15.1| -0.9|  -4 |   3 |
| 2910 |  no   |    ?     |   ?   |    no    |   32 | stab |       |     24    | 14.2| 16.3| -2.1|  -5 |   3 |
| 2911 |  no   |    no    |  yes  |   yes?   |   28 |  105 |   *   |           | 15.7| 15.8| -0.1|  -6 |   3 |
| 2912 |  no   |    no    |  yes  |   yes?   |   30 |  159 |   *   |           | 16.6| 16.7| -0.1|  -6 |   3 |
| 2913 |  no   |    ?     |   ?   |    no    |   32 |  162 |       |     24    | 15.6| 17.1| -1.5|  -5 |   2 |
| 2914 |  no   |    ?     |   ?   |    ?     |   34 |  140 |       |     30    | 15.7| 16.9| -1.2|  -6 |   2 |
| 2915 |  no   |    ?     |   ?   |    no    |   44 | stab |       |     24    | 15.9| 17.8| -1.9|  -8 |   1 |
| 2916 |  no   |   yes    |  yes  |    no    |   41 |  161 |       |           | 15.3| 17.4| -2.1|  -7 |   2 |
| 2917 |  no   |   yes    |   ?   |    no    |   43 |  141 |       |           | 13.5| 16.9| -3.4| -10 |   4 |
--------------------------------------------------------------------------------------------------------------
 Notes:   1. T  - surface temperature - 2 m AGL 
          2. Tc - convective temperature
          3. Tp - thermal deficit (the dufference between the surface temperature and the convective temperature ( T-Tc))
          4. Cloud's base and top are determined relative to MSL 
          5. "*"  - unpossible to determine the cloud's type 
          6. "-" - the cloud's base height is under the ground level
          7. Cloudless convection - the height represents the top level. This determines the upper height of instable
             atmospheric layer, provided the conditions for  development of convective clouds (Cu/Cb) are not satisfied.
          8. Fi - Faust index  (a (in)stability parameter) [-]
          9. SI850 - Showalter Index (a (in)stability parameter) [-]	





stranka pripravena 28.09.2021 v 00:28 swing a.s.

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