Sias from VFRPlanner.co.za has sent in the following weather forecast for this leg:
Working on a 13/8/2011 01:00Z take-off from Colombo to Phuket;
I have added the winds to a 105kts cruising speeds which brings us to a 9h08 flight with a nice tail wind at 7500ft, which comes at a cost…http://www.vfrplanner.org/app/nav/vfrplan/plan.htm?planId=8081851806the spot graphs are showing high humidity along the route which is normal associated with weatherAt departure time the weather does not look good also confirmed with the middle cloud 13/8 00Z weather chart – and approaching the coast on the spot graphs (Low Cloud).Sri Lanka – VCBI 120940Z 1212/1318 24010KT 9999 SCT016 TX30/1308Z TN27/1223Z TEMPO 1212/1215 FEW020CB PROB 30 TEMPO 1222/1303 8000 -TSRA/SHRA SCT010 BKN016 FEW020CBPhuket – VTSP 121100Z 1212/1318 26008KT 8000 FEW020 SCT120 BKN3000 BECMG 1215/1217 VRB02KT PROB30 TEMPO 1218/1222 22008G18KT 4000 TSRA FEW016CB SCT020 BKN100 BECMG 1301/1303 26008KT 9000 BECMG 1314/1316 VRB02KTInto the flight (03-09Z) there is weather left of track which is fairly stationary and confirmed on the wind spot graph The morning weather at Phuket should have cleared by the time they arrive around 10Z-11Z Freezing levels around F140-F160If they need to avoid weather right of track will probability be the choice.As a summary I think some bad weather when departing left of track with the Phuket weather clearing as they approach halfway
