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Convection conditions forecast for balloning and gliding in Prague area
(the spot model elevation 1142 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 | | | | | | | | | | |
|------------------------------------------------------------------------------------------------------------|
| 0803 | ? | yes | yes | no | 54 | 78 | | | 6.0| 16.0|-10.0| -7 | 7 |
| 0804 | ? | yes | yes | no | 55 | stab | | | 6.4| 16.6|-10.2| -6 | 6 |
| 0805 | ? | yes | yes | no | 59 | stab | | | 6.7| 18.1|-11.4| -6 | 5 |
| 0806 | ? | yes | yes | no | 54 | 58 | | | 7.1| 17.0| -9.9| -9 | 5 |
| 0807 | no | yes | yes | no | 52 | 71 | | | 7.5| 16.5| -9.0| -15 | 5 |
| 0808 | no | yes | ? | no | 46 | stab | | | 8.1| 15.4| -7.3| -13 | 6 |
| 0809 | no | yes | yes | no | 41 | 72 | | | 9.1| 15.0| -5.9| -14 | 6 |
| 0810 | no | yes | yes | no | 40 | 71 | | | 10.3| 15.1| -4.8| -13 | 5 |
| 0811 | no | yes | yes | no | 40 | 79 | | | 11.2| 15.4| -4.2| -12 | 5 |
| 0812 | no | yes | yes | no | 35 | 42 | | 21 | 11.7| 15.0| -3.3| -11 | 4 |
| 0813 | no | yes | yes | no | 35 | 87 | | | 11.9| 15.3| -3.4| -8 | 4 |
| 0814 | ? | yes | yes | no | 33 | 46 | | | 11.6| 14.9| -3.3| -5 | 3 |
| 0815 | ? | yes | yes | no | 39 | 44 | | | 11.0| 16.5| -5.5| -4 | 2 |
| 0816 | no | yes | yes | no | 40 | 50 | | | 10.8| 16.6| -5.8| -4 | 2 |
| 0817 | ? | yes | yes | no | 41 | 66 | | | 10.4| 16.7| -6.3| -3 | 1 |
| 0818 | no | yes | yes | no | 50 | 136 | | | 10.0| 18.8| -8.8| -3 | 0 |
| 0819 | no | yes | yes | no | 38 | stab | | | 9.9| 15.7| -5.8| -4 | 1 |
|------------------------------------------------------------------------------------------------------------|
| 0903 | ? | yes | yes | no | 21 | 28 | | | 10.2| 11.5| -1.3| -2 | -1 |
| 0904 | ? | yes | yes | no | 22 | stab | | | 10.1| 11.6| -1.5| -3 | -1 |
| 0905 | ? | yes | yes | no | 60 | 196 | | | 9.9| 20.8|-10.9| -4 | 0 |
| 0906 | ? | yes | yes | no | 59 | 181 | | | 9.7| 20.5|-10.8| -3 | -1 |
| 0907 | ? | yes | yes | no | 61 | 158 | | | 9.2| 20.8|-11.6| -5 | -0 |
| 0908 | ? | yes | yes | no | 24 | stab | | | 9.5| 11.6| -2.1| -7 | 1 |
| 0909 | no | yes | yes | no | 22 | stab | * | | 10.4| 11.1| -0.7| -9 | 1 |
| 0910 | no | yes | yes | no | 53 | stab | | 22 | 11.0| 19.1| -8.1| -10 | 3 |
| 0911 | no | ? | yes | no | 23 | stab | * | | 11.5| 11.6| -0.1| -10 | 4 |
| 0912 | ? | ? | yes | no | 54 | 91 | | 24 | 11.7| 19.2| -7.5| -10 | 3 |
| 0913 | ? | ? | yes | no | 54 | 83 | | 24 | 11.7| 19.3| -7.6| -9 | 3 |
| 0914 | ? | yes | yes | no | 55 | stab | | 22 | 11.4| 19.8| -8.4| -9 | 3 |
| 0915 | ? | yes | yes | no | 58 | stab | | | 10.4| 20.4|-10.0| -9 | 3 |
| 0916 | ? | yes | yes | no | 64 | stab | | | 9.4| 21.6|-12.2| -11 | 2 |
| 0917 | ? | yes | yes | no | 67 | stab | | | 8.7| 21.8|-13.1| -11 | 2 |
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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) [-]
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