Limited 3 Days Seeing Prediction

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meteoblue.com forecastBalea Lake (24.62°E / 45.60°N)     last update: 27.05  20:47 UTC
Sun 27.05.2012              05:42       20:54    meteoblue.com
Time (EEST)000102030405060708091011121314151617181920212223
High Clouds (%) 0 99 100 99 51 8 100 100 100
Mid Clouds (%) 0 100 100 100 100 100 100 99 87
Low Clouds (%) 0 90 96 99 97 89 90 96 99
Seeing Index 1 5 5 5 5 5 5 5 5 5
Seeing Index 2 4 4 4 4 4 4 4 4 4
Seeing arcSeconds 0.79 0.71 0.61 0.56 0.57 0.59 0.61 0.63 0.65
Jet stream (m/s) 10 10 10 9 9 9 9 9 9
2m Rel. Hum. (%) 97 91 96 96 96 96 96 96 97
Bad Layers Top (km) 10.4 10.4 10.4 10.4 10.4 10.4 10.4 10.4 10.4
Bad Layers Bot (km) 9.2 9.2 9.2 9.2 9.2 9.2 9.2 9.2 9.2
Bad Layers K/100m 0.76 0.79 0.83 0.89 0.94 0.96 0.92 0.92 0.92
Mon 28.05.2012              05:41       20:55    meteoblue.com
Time (EEST)000102030405060708091011121314151617181920212223
High Clouds (%) 100 99 99 100 99 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 98 97 88
Mid Clouds (%) 88 85 88 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 92 88 88
Low Clouds (%) 97 94 95 99 100 99 100 100 100 99 99 99 98 98 98 98 98 96 92 92 95 94 84 85
Seeing Index 1 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5
Seeing Index 2 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 3 3
Seeing arcSeconds 0.66 0.67 0.66 0.66 0.64 0.63 0.62 0.64 0.66 0.67 0.68 0.71 0.73 0.74 0.74 0.75 0.75 0.75 0.74 0.75 0.74 0.74 0.75 0.75
Jet stream (m/s) 10 9 9 9 8 7 6 6 6 6 7 7 7 7 7 7 6 5 5 4 3 3 4 4
2m Rel. Hum. (%) 96 97 96 97 96 97 96 97 96 96 96 96 96 97 96 97 97 97 96 97 97 97 97 98
Bad Layers Top (km) 10.4 10.4 10.4 10.3 10.3 10.3 10.3 10.3 10.3 10.3 10.3 10.3 10.3 10.3 10.3 10.3 10.3 10.3 10.3 10.3 10.3 10.3 10.3 10.3
Bad Layers Bot (km) 9.2 9.2 9.2 9.2 9.2 9.2 9.2 9.2 9.2 9.2 9.2 9.2 9.2 9.2 9.2 9.1 9.1 9.1 9.1 9.1 9.1 9.1 9.1 9.1
Bad Layers K/100m 0.95 0.96 0.95 0.91 0.88 0.84 0.85 0.84 0.85 0.82 0.77 0.76 0.77 0.82 0.87 0.90 0.92 0.93 0.94 0.94 0.98 1.02 1.06 1.11
Tue 29.05.2012              05:41       20:56    meteoblue.com
Time (EEST)000102030405060708091011121314151617181920212223
High Clouds (%) 88 88 88 88 88 72 57 69 57 43 16 7 4 2 1 8 7 0 0 0 0 14 64 88
Mid Clouds (%) 89 99 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100
Low Clouds (%) 84 88 77 67 66 65 66 74 93 98 99 95 95 95 96 98 96 95 98 100 100 100 100 100
Seeing Index 1 5 4 4 4 4 4 4 4 4 4 4 4 4 4 4 5 5 5 5 5 5 5 5 4
Seeing Index 2 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 4 4 4 3
Seeing arcSeconds 0.74 0.75 0.76 0.76 0.76 0.77 0.78 0.78 0.79 0.78 0.78 0.80 0.84 0.84 0.80 0.81 0.80 0.84 0.83 0.82 0.76 0.75 0.76 0.77
Jet stream (m/s) 4 4 3 3 3 3 2 2 1 0 1 1 1 1 1 0 0 1 2 3 4 4 5 5
2m Rel. Hum. (%) 97 98 97 98 97 97 97 97 97 97 97 97 97 97 97 97 97 97 97 97 97 97 97 98
Bad Layers Top (km) 10.3 10.3 10.3 10.3 10.3 10.3 10.3 10.3 10.3 10.3 10.3 10.3 10.3 10.3 10.3 10.3 10.3 10.3 10.3 10.3 10.3 10.3 10.3 10.3
Bad Layers Bot (km) 9.1 9.1 9.1 9.1 9.1 9.1 9.1 9.1 9.1 9.1 9.1 9.1 9.1 9.1 9.1 9.1 9.1 9.1 9.1 9.1 9.1 9.2 9.2 9.2
Bad Layers K/100m 1.15 1.18 1.20 1.21 1.20 1.20 1.20 1.19 1.19 1.19 1.19 1.19 1.18 1.17 1.16 1.14 1.13 1.13 1.11 1.09 1.05 1.03 1.02 1.03
Wed 30.05.2012              05:40       20:57    meteoblue.com
Time (EEST)000102030405060708091011121314151617181920212223
High Clouds (%) 99 99 70 28 13 0 0 0 0 34 79 14 29 52 75 88 68 48 47 46 36 17 0 0
Mid Clouds (%) 100 100 100 100 100 87 55 44 11 7 25 70 99 78 34 31 31 13 12 0 3 0 0 0
Low Clouds (%) 100 99 99 100 100 85 88 82 80 86 81 65 56 58 67 66 72 77 81 86 91 84 88 93
Seeing Index 1 4 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5
Seeing Index 2 3 4 4 4 4 4 5 5 4 5 5 5 5 5 5 5 5 5 5 5 4 4 4 4
Seeing arcSeconds 0.77 0.77 0.74 0.69 0.63 0.62 0.63 0.61 0.62 0.64 0.68 0.68 0.66 0.66 0.66 0.65 0.68 0.71 0.69 0.69 0.70 0.64 0.56 0.54
Jet stream (m/s) 6 7 8 9 10 11 11 12 13 13 13 13 13 14 15 16 16 17 19 20 20 20 20 20
2m Rel. Hum. (%) 97 98 97 98 98 98 97 98 97 97 97 97 96 96 94 96 97 98 97 98 98 98 97 98
Bad Layers Top (km) 10.3 10.3 10.3 10.3 10.4 10.4 10.4 10.4 10.4 10.4 no 10.4 1.4 no no 3.6 no no no 4.2 4.9 4.2 4.2 4.2
Bad Layers Bot (km) 9.2 9.2 9.2 9.2 9.2 9.2 9.2 9.2 9.2 9.2 no 9.2 1.0 no no 3.0 no no no 3.6 3.0 3.0 2.5 2.5
Bad Layers K/100m 1.03 1.04 1.02 0.92 0.78 0.65 0.56 0.52 0.53 0.52 no 0.51 0.53 no no 0.51 no no no 0.52 0.53 0.63 0.62 0.66


Values may not reflect precisely reality.(Ver. 2.3, 14.6.2009)
  • For good seeing conditions look for dark blue colors in the cloud cover and green values in the Seeing Indices and Jet Stream
  • The estimated seeing indexes (1 & 2) range from 1 (poor) to 5 (excellent) seeing conditions. This value is computed based on the integration of turbulent layers in the atmosphere.
  • NEW! Estimation of seeing in arcseconds. This is a test prediction under development, uncalibrated for the time being.
  • Cloud cover ranges from dark blue (0% cover) to white (100% cover). Fog or very low cloud is not shown here (see pictocast for fog)
  • High jetstream speeds (>35m/s) usually correspond to bad seeing, as well as very low speeds (<5m/s). Color gives a hint.
  • Bad Layers have a Temperature Gradient > 0.5K/100m. The actual gradient is shown K/100m. The top and bottom height of the Bad layers is indicated by Bad Layers bot/top