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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 | | | | | | | | | | |
|------------------------------------------------------------------------------------------------------------|
| 0912 | ? | no | yes | 65 | 75 | Cu | | 11.8| 11.1| 0.7| -11 | 6 |
| 0913 | ? | no | yes | 67 | 78 | Cu | | 12.3| 11.6| 0.7| -11 | 5 |
| 0914 | ? | no | yes | 68 | 79 | Cu | | 12.3| 12.2| 0.1| -11 | 5 |
| 0915 | ? | no | yes | 65 | 85 | Cu | | 12.3| 12.4| -0.1| -13 | 5 |
| 0916 | ? | no | yes | 66 | 86 | Cu | | 12.2| 12.9| -0.7| -14 | 6 |
| 0917 | ? | no | yes | 69 | 77 | | 50 | 11.5| 12.9| -1.4| -13 | 6 |
| 0918 | yes | yes | no | 68 | 79 | | | 10.1| 13.1| -3.0| -12 | 6 |
| 0919 | yes | yes | no | 68 | 79 | | | 8.1| 13.1| -5.0| -12 | 6 |
| 0920 | yes | yes | no | 103 | stab | | | 6.7| 21.3|-14.6| -12 | 6 |
| 0921 | yes | yes | no | 105 | stab | | | 5.9| 22.3|-16.4| -12 | 6 |
| 0922 | yes | yes | no | 107 | stab | | | 5.4| 22.5|-17.1| -11 | 6 |
|------------------------------------------------------------------------------------------------------------|
| 1003 | yes | yes | no | 114 | stab | | | 3.9| 23.3|-19.4| -9 | 6 |
| 1004 | yes | yes | no | 114 | stab | | | 3.7| 23.4|-19.7| -9 | 6 |
| 1005 | yes | yes | no | 114 | stab | | | 5.1| 23.8|-18.7| -8 | 6 |
| 1006 | yes | yes | no | 110 | stab | | | 7.6| 23.1|-15.5| -8 | 5 |
| 1007 | yes | ? | yes | no | 71 | stab | | 24 | 10.5| 15.5| -5.0| -8 | 5 |
| 1008 | yes | ? | yes | ? | 64 | stab | | 39 | 12.4| 14.8| -2.4| -8 | 5 |
| 1009 | yes | no | yes | 64 | 74 | | 57 | 13.5| 14.8| -1.3| -8 | 5 |
| 1010 | ? | no | yes | 67 | stab | Cu | | 14.4| 15.0| -0.6| -7 | 5 |
| 1011 | ? | no | yes | 66 | stab | Cu | | 14.8| 15.3| -0.5| -7 | 4 |
| 1012 | ? | no | yes | 72 | stab | | 64 | 15.1| 16.9| -1.8| -7 | 4 |
| 1013 | ? | no | yes | 68 | stab | | 64 | 15.4| 16.6| -1.2| -6 | 3 |
| 1014 | ? | no | yes | 65 | 77 | | 60 | 15.7| 16.7| -1.0| -6 | 3 |
| 1015 | ? | no | yes | 59 | 102 | Cu | | 16.0| 16.1| -0.1| -7 | 2 |
| 1016 | ? | no | yes | 57 | 115 | Cu | | 15.5| 16.1| -0.6| -8 | 3 |
| 1017 | ? | no | yes | ? | 54 | 106 | | 42 | 14.7| 15.8| -1.1| -8 | 3 |
| 1018 | ? | yes | yes | no | 53 | 119 | | | 13.3| 15.9| -2.6| -7 | 3 |
| 1019 | yes | yes | no | 49 | 129 | | | 12.2| 15.6| -3.4| -7 | 3 |
| 1020 | yes | yes | no | 53 | 115 | | | 11.2| 15.9| -4.7| -7 | 3 |
| 1021 | yes | yes | no | 52 | 110 | | | 10.2| 15.8| -5.6| -7 | 3 |
| 1022 | yes | yes | no | 50 | 108 | | | 9.0| 15.5| -6.5| -7 | 4 |
|------------------------------------------------------------------------------------------------------------|
| 1103 | yes | yes | no | 36 | 93 | | | 7.1| 13.0| -5.9| -10 | 5 |
| 1104 | yes | yes | no | 13 | stab | | | 6.9| 8.1| -1.2| -10 | 5 |
| 1105 | yes | yes | no | 26 | 30 | | | 7.8| 10.5| -2.7| -11 | 6 |
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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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