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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 | | | | | | | | | | |
|------------------------------------------------------------------------------------------------------------|
| 0718 | ? | yes | yes | no | 44 | 102 | | | 4.9| 12.2| -7.3| -11 | 5 |
| 0719 | ? | yes | yes | no | 46 | 100 | | | 4.6| 12.3| -7.7| -12 | 7 |
| 0720 | ? | yes | yes | no | 49 | 96 | | | 4.3| 12.9| -8.6| -12 | 8 |
| 0721 | ? | yes | yes | no | 51 | 88 | | | 4.3| 13.1| -8.8| -12 | 8 |
| 0722 | ? | yes | yes | no | 54 | 58 | | | 4.1| 13.9| -9.8| -11 | 8 |
|------------------------------------------------------------------------------------------------------------|
| 0803 | ? | yes | yes | no | 57 | 72 | | | 5.6| 16.3|-10.7| -7 | 6 |
| 0804 | no | yes | yes | no | 58 | stab | | | 6.1| 17.0|-10.9| -7 | 6 |
| 0805 | ? | yes | yes | no | 63 | stab | | | 6.5| 18.9|-12.4| -6 | 6 |
| 0806 | ? | yes | yes | no | 61 | stab | | | 6.8| 18.7|-11.9| -5 | 4 |
| 0807 | ? | yes | yes | no | 52 | stab | | | 7.5| 17.0| -9.5| -11 | 5 |
| 0808 | ? | yes | yes | no | 47 | 64 | | | 7.9| 15.7| -7.8| -11 | 5 |
| 0809 | no | yes | yes | no | 39 | 68 | | | 9.0| 14.4| -5.4| -15 | 7 |
| 0810 | no | yes | yes | no | 36 | 69 | | | 10.3| 14.2| -3.9| -16 | 7 |
| 0811 | no | yes | yes | no | 34 | 65 | | | 11.2| 13.9| -2.7| -15 | 6 |
| 0812 | no | yes | yes | no | 32 | 44 | | 22 | 11.7| 13.5| -1.8| -15 | 5 |
| 0813 | ? | yes | yes | no | 34 | stab | | | 11.7| 14.1| -2.4| -14 | 4 |
| 0814 | ? | yes | yes | no | 40 | stab | | | 11.0| 15.4| -4.4| -13 | 4 |
| 0815 | ? | yes | yes | no | 39 | stab | | | 9.7| 15.2| -5.5| -11 | 3 |
| 0816 | ? | yes | yes | no | 46 | 55 | | | 8.9| 16.3| -7.4| -9 | 3 |
| 0817 | ? | yes | yes | no | 49 | 90 | | | 8.4| 17.0| -8.6| -9 | 3 |
| 0818 | ? | yes | yes | no | 53 | 105 | | | 7.9| 17.7| -9.8| -7 | 2 |
| 0819 | ? | yes | yes | no | 53 | 102 | | | 7.9| 17.7| -9.8| -6 | 3 |
| 0820 | yes | yes | no | 52 | 94 | | | 8.0| 17.3| -9.3| -5 | 3 |
| 0821 | ? | yes | yes | no | 52 | 74 | | | 8.1| 17.7| -9.6| -5 | 2 |
| 0822 | ? | yes | yes | no | 53 | 64 | | | 8.2| 18.1| -9.9| -5 | 2 |
|------------------------------------------------------------------------------------------------------------|
| 0903 | ? | yes | yes | no | 63 | 236 | | | 9.4| 21.4|-12.0| -3 | -0 |
| 0904 | no | yes | yes | no | 61 | stab | | | 9.4| 20.9|-11.5| -1 | -2 |
| 0905 | no | yes | ? | no | 59 | 181 | | | 9.5| 20.4|-10.9| -3 | -0 |
| 0906 | no | yes | ? | no | 56 | 162 | | | 9.5| 19.7|-10.2| -4 | 1 |
| 0907 | no | yes | ? | no | 55 | 145 | | | 9.3| 19.3|-10.0| -4 | 1 |
| 0908 | no | yes | yes | no | 55 | 136 | | | 9.2| 19.3|-10.1| -5 | 1 |
| 0909 | no | yes | ? | no | 55 | 125 | | | 9.8| 19.1| -9.3| -7 | 2 |
| 0910 | no | yes | ? | no | 55 | 120 | | 20 | 10.4| 19.2| -8.8| -8 | 2 |
| 0911 | no | ? | yes | no | 55 | 124 | | 24 | 11.1| 19.3| -8.2| -9 | 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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