To: weather_watch-list@eso.org From: asmpredi Reply-To: weather_watch-list@eso.org Subject: ESO weather_watch update ----- _____________________________________________________________________ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ WEATHER OF THE NEXT 36H. Updated on Sat May 17 02:35:04 UTC 2008 >Weather Circumstances for Paranal: 2008.05.17 03h-06hUT VariableExtinction 2008.05.17 06h-09hUT Clouds 2008.05.17 06UT StrongWind 2008.05.17 12UT StrongWind 2008.05.17 18UT StrongWind 2008.05.18 00UT StrongWind >Weather Circumstances for La Silla: 2008.05.17 00h-03hUT Clouds 2008.05.17 03h-06hUT Clouds 2008.05.17 15h-18hUT VariableExtinction 2008.05.17 18h-21hUT VariableExtinction 2008.05.17 18UT StrongWind 2008.05.17 21h-00hUT VariableExtinction 2008.05.18 00UT StrongWind 2008.05.18 12UT StrongWind _____________________________________________________________________ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ___________________________________________________________________ | Sky Quality Conditions from best to worst | | | | LowPWV--Nominal--HighPWV--VariableExtinction--Clouds---Overcast | | <.......photometric .....><..................><.non photometric.> | |___________________________________________________________________| _______________________________________________________________ | Message Protocol | | | | Clouds 10% to 80% Cloudy Sky in a 3-hourly mean| | HighPWV Precipitable Water Vapour>10mm H2O | | LongTau0 Wind Speed @ 200mb <20 m/s | | LowPWV Precipitable Water Vapour< 1mm H2O | | LowPressure Incoming Weather Front (+\-12 hours) | | NegativeTemperature Air Temperature <0 Celcius (+/- 1C) | | Nominal Nominal Observing Conditions | | Overcast >80% Cloudy Sky in a 3-hourly mean | | ShortTau0 Wind Speed @ 200mb >50 m/s | | StrongWind Wind Speed at Ground Level >15 m/s | | Tair(C) Forecasted Temperature at 30m above | | ground (for enclosure thermal control) | | VariableExtinction >5% Transp. Cirrus and <10% Cloudy Sky | |_______________________________________________________________| Complete info at: http://www.eso.org/gen-fac/pubs/astclim/forecast/meteo _____________________________________________________________________ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~