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Odbor letecké meteorologie

Předpověď vhodných podmínek pro plachtařské a balónové létání

 
 
Convection conditions forecast for balloning and gliding in Palava area
  (the spot model elevation  640 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 |          |      |      |       |           |     |     |     |     |     |
|------------------------------------------------------------------------------------------------------------|
| 1712 |  no   |   yes    |  yes  |    no    |   44 |  278 |       |     21    | 18.9| 20.4| -1.5|  -2 |  -1 |
| 1713 |  no   |    no    |  yes  |   yes!   |   31 |  278 |  Cb   |           | 20.8| 18.7|  2.1|  -3 |  -0 |
| 1714 |  no   |   yes    |  yes  |    no    |   46 |  257 |       |           | 18.5| 21.4| -2.9|  -4 |  -1 |
| 1715 |  no   |    ?     |  yes  |    no    |   51 |  217 |       |     25    | 19.8| 21.9| -2.1|  -5 |  -1 |
| 1716 |  no   |    no    |   ?   |    ?     |   59 |  191 |       |     43    | 20.7| 22.5| -1.8|  -5 |  -1 |
| 1717 |  no   |    ?     |  yes  |    ?     |   51 |  217 |       |     35    | 20.2| 22.1| -1.9|  -2 |  -1 |
| 1718 |   ?   |   yes    |  yes  |    no    |   54 |  196 |       |     21    | 19.1| 22.3| -3.2|  -2 |  -1 |
| 1719 |   ?   |   yes    |  yes  |    no    |   49 | stab |       |           | 17.9| 21.8| -3.9|  -2 |  -0 |
| 1720 |   ?   |   yes    |  yes  |    no    |   47 |  149 |       |           | 17.1| 20.5| -3.4|  -3 |   2 |
| 1721 |   ?   |   yes    |  yes  |    no    |   43 |  162 |       |           | 16.3| 20.3| -4.0|  -3 |   1 |
| 1722 |   ?   |   yes    |  yes  |    no    |   43 |  201 |       |           | 15.8| 20.9| -5.1|  -3 |   1 |
|------------------------------------------------------------------------------------------------------------|
| 1803 |   ?   |   yes    |  yes  |    no    |   14 |   20 |   *   |           | 14.3| 15.1| -0.8|  -4 |   3 |
| 1804 |   ?   |    ?     |  yes  |    no    |   13 | stab |   *   |           | 14.3| 14.9| -0.6|  -3 |   2 |
| 1805 |  no   |    ?     |  yes  |    no    |   13 |   23 |   *   |           | 14.3| 14.8| -0.5|  -3 |   2 |
| 1806 |   ?   |   yes    |  yes  |    no    |   12 |   15 |   *   |           | 14.7| 14.7|  0.0|  -3 |   2 |
| 1807 |   ?   |    no    |  yes  |    ?     |   13 |   43 |   *   |           | 15.3| 15.1|  0.2|  -4 |   1 |
| 1808 |   ?   |    no    |        yes       |   16 |   53 |   *   |           | 16.7| 16.1|  0.6|  -4 |   0 |
| 1809 |   ?   |    no    |        yes       |   22 |   75 |  Cu   |           | 18.0| 17.3|  0.7|  -4 |   0 |
| 1810 |  yes  |    no    |  yes  |   yes!   |   21 |  192 |  Cb   |           | 18.7| 17.9|  0.8|  -3 |  -0 |
| 1811 |  yes  |    no    |  yes  |   yes!   |   26 |  246 |  Cb   |           | 19.9| 18.9|  1.0|  -3 |  -0 |
| 1812 |   ?   |    no    |  yes  |   yes!   |   30 |  258 |  Cb   |           | 21.1| 19.9|  1.2|  -2 |  -2 |
| 1813 |   ?   |    no    |  yes  |   yes!   |   43 |  298 |  Cb   |           | 22.2| 22.5| -0.3|  -2 |  -3 |
| 1814 |  yes  |    no    |  yes  |   yes!   |   45 |  290 |  Cb   |           | 22.8| 22.4|  0.4|  -3 |  -2 |
| 1815 |  yes  |    no    |  yes  |   yes!   |   49 |  280 |  Cb   |           | 23.2| 23.0|  0.2|  -1 |  -2 |
| 1816 |   ?   |    no    |  yes  |    ?     |   48 |  299 |  Cb   |           | 22.5| 23.3| -0.8|  -2 |  -2 |
| 1817 |  yes  |    ?     |  yes  |    ?     |   47 |  266 |       |     38    | 22.1| 23.2| -1.1|  -3 |  -1 |
| 1818 |   ?   |    ?     |  yes  |    no    |   46 |  217 |       |     28    | 21.4| 23.0| -1.6|  -4 |  -1 |
| 1819 |   ?   |   yes    |  yes  |    no    |   46 |  203 |       |           | 20.1| 23.3| -3.2|  -4 |  -1 |
| 1820 |        yes       |  yes  |    no    |   45 |  166 |       |           | 18.6| 23.1| -4.5|  -3 |  -1 |
| 1821 |        yes       |  yes  |    no    |   46 |  133 |       |           | 17.1| 23.3| -6.2|  -3 |  -1 |
| 1822 |        yes       |  yes  |    no    |   47 |  125 |       |           | 15.7| 23.4| -7.7|  -3 |  -2 |
|------------------------------------------------------------------------------------------------------------|
| 1903 |        yes       |  yes  |    no    |    7 | stab |   *   |           | 13.7| 13.9| -0.2|  -9 |   0 |
| 1904 |        yes       |  yes  |    no    |    7 | stab |   *   |           | 13.8| 13.7|  0.1| -11 |   1 |
| 1905 |        yes       |  yes  |    no    |   45 |   87 |       |           | 14.4| 22.7| -8.3| -12 |   1 |
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 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 17.07.2025 v 12:23 swing a.s.

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