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Limited 3 Days Seeing Prediction

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meteoblue.com forecastLu (10.37°E / 46.63°N)     last update: 21.05  18:39 UTC
Mon 21.05.2012              05:40       20:49    meteoblue.com
Time (CEST)000102030405060708091011121314151617181920212223
High Clouds (%) 0 0 0 0 0 0 0 0 0 0
Mid Clouds (%) 0 100 100 100 100 100 100 66 37 100
Low Clouds (%) 0 57 68 72 81 78 74 66 96 100
Seeing Index 1 4 5 4 4 4 4 4 4 4 4
Seeing Index 2 3 4 2 3 3 3 3 2 2 3
Seeing arcSeconds 0.53 0.49 0.55 0.58 0.58 0.59 0.59 0.61 0.61 0.58
Jet stream (m/s) 17 18 20 20 19 19 19 18 16 15
2m Rel. Hum. (%) 96 96 96 97 97 97 97 97 96 96
Bad Layers Top (km) 10.4 10.4 10.4 10.4 10.4 10.4 10.4 10.3 10.3 10.3
Bad Layers Bot (km) 9.2 9.2 8.1 8.1 8.1 8.1 8.1 8.1 8.1 8.1
Bad Layers K/100m 0.80 0.95 0.74 0.79 0.77 0.74 0.73 0.78 0.81 0.82
Tue 22.05.2012              05:39       20:50    meteoblue.com
Time (CEST)000102030405060708091011121314151617181920212223
High Clouds (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8 0 0 9 73 55 11
Mid Clouds (%) 100 100 90 86 0 0 0 0 0 0 0 0 0 80 94 35 20 13 81 100 100 100 100 84
Low Clouds (%) 100 98 94 98 99 100 100 100 100 99 86 51 37 23 23 23 27 39 68 89 99 88 77 50
Seeing Index 1 4 4 4 4 4 4 4 4 4 4 4 4 5 4 5 5 5 5 5 5 5 5 5 5
Seeing Index 2 3 3 3 3 3 2 3 3 3 2 3 3 3 3 3 3 3 3 4 4 5 5 3 4
Seeing arcSeconds 0.56 0.57 0.58 0.58 0.56 0.54 0.52 0.51 0.52 0.52 0.51 0.50 0.51 0.48 0.49 0.51 0.54 0.53 0.46 0.43 0.44 0.45 0.50 0.57
Jet stream (m/s) 15 14 13 12 12 12 13 14 14 14 15 17 18 19 21 22 22 23 23 23 22 22 22 21
2m Rel. Hum. (%) 96 96 96 96 96 96 96 96 96 96 96 95 82 73 70 68 70 67 78 85 86 87 85 85
Bad Layers Top (km) 10.3 10.3 10.3 10.3 10.3 10.3 10.3 10.3 10.3 10.3 10.4 10.4 10.4 10.4 10.4 10.4 10.4 10.4 10.5 10.5 10.5 10.5 10.5 5.7
Bad Layers Bot (km) 8.1 8.1 8.1 8.1 8.1 8.1 9.1 9.1 9.1 8.1 9.1 8.1 9.2 9.2 9.2 9.2 9.2 9.2 9.3 9.3 9.3 9.3 9.3 4.3
Bad Layers K/100m 0.81 0.80 0.77 0.76 0.78 0.78 1.02 0.98 0.90 0.73 0.99 0.75 1.04 0.88 0.78 0.72 0.70 0.72 0.66 0.59 0.54 0.52 0.52 0.55
Wed 23.05.2012              05:39       20:51    meteoblue.com
Time (CEST)000102030405060708091011121314151617181920212223
High Clouds (%) 1 47 59 81 100 100 100 100 100 100 100 100 39 47 53 96 99 15 0 0 74 54 0 0
Mid Clouds (%) 66 10 0 1 0 11 66 50 46 61 100 100 96 34 8 8 0 0 0 0 0 29 0 0
Low Clouds (%) 41 38 45 52 54 57 43 39 20 21 39 51 67 53 67 59 43 22 3 50 23 24 24 22
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 5 4 4 4 4 5 5 5 5 5 5 5 5 5 5 5 5 5 4 5 5 5 4 5
Seeing arcSeconds 0.57 0.56 0.57 0.59 0.59 0.61 0.60 0.60 0.58 0.59 0.58 0.57 0.55 0.55 0.56 0.55 0.56 0.52 0.51 0.52 0.53 0.50 0.49 0.48
Jet stream (m/s) 21 20 18 17 15 15 15 14 13 11 10 9 9 9 9 10 9 9 9 9 9 9 9 8
2m Rel. Hum. (%) 85 86 85 84 84 84 85 84 86 85 84 83 86 86 82 82 84 85 88 89 85 82 81 87
Bad Layers Top (km) 4.9 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 no no no 4.3 4.3 4.3 4.3 4.3 4.4 4.4 4.4 4.4
Bad Layers Bot (km) 4.3 4.3 3.7 3.7 3.7 4.3 4.3 4.3 4.3 4.3 3.7 4.3 no no no 3.7 3.7 3.7 3.1 3.7 3.7 3.7 3.1 3.7
Bad Layers K/100m 0.54 0.62 0.56 0.55 0.54 0.53 0.54 0.54 0.57 0.56 0.50 0.51 no no no 0.51 0.50 0.61 0.59 0.72 0.75 0.78 0.58 0.71
Thu 24.05.2012              05:38       20:52    meteoblue.com
Time (CEST)000102030405060708091011121314151617181920212223
High Clouds (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Mid Clouds (%) 0 76 0 0 0 0 0 0 0 0 0 0 0 0 0 6 7 7 6 0 0 0 0 0
Low Clouds (%) 29 55 55 30 22 26 17 21 11 19 34 20 2 26 30 53 57 57 58 59 66 76 64 55
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 5 4 4 4 5 5 4 4 4 5 5 5 5 5 5 5 5 5 5 5 5 5 4 4
Seeing arcSeconds 0.49 0.47 0.48 0.48 0.51 0.50 0.49 0.48 0.47 0.46 0.47 0.49 0.48 0.46 0.49 0.67 0.68 0.65 0.64 0.65 0.67 0.64 0.58 0.58
Jet stream (m/s) 7 7 7 7 8 9 9 10 11 12 12 11 11 10 9 11 11 12 12 12 12 11 12 12
2m Rel. Hum. (%) 90 88 90 91 91 87 84 84 85 86 83 75 70 65 58 79 80 80 83 86 90 94 93 91
Bad Layers Top (km) 4.4 5.0 5.0 5.0 4.4 4.4 4.4 4.4 4.4 4.4 4.4 4.4 4.4 5.0 5.0 no no no 3.2 3.2 3.2 3.1 3.7 3.1
Bad Layers Bot (km) 3.7 3.7 3.7 3.7 3.7 3.7 3.1 3.1 3.1 3.7 3.7 3.7 3.7 4.4 4.4 no no no 2.6 2.6 2.6 2.6 2.6 2.1
Bad Layers K/100m 0.71 0.58 0.58 0.59 0.62 0.62 0.57 0.57 0.58 0.68 0.73 0.67 0.62 0.61 0.62 no no no 0.51 0.54 0.66 0.73 0.60 0.75


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