Aviation weather thread

EINN WS WRNG 01 190700 VALID 190708/190908 WS IN APCH RWY24 REP AT 0708 B757 WS IN APCH RWY24 REP AT 0706 B757 ON APPROACH 1 MILE OUT +20KT AND -15KT=

smurfjed wrote: »

@gaoth laidir..... have you seen any indications that the ICTZ has moved further north this year? We are battling thunderstorms in Saudi on a daily basis, massive things up to 40000+, this certainly isn't a common annual event, but for the last couple of years it appears to be getting worse.

Gone are the days of turning on the autopilot and falling asleep.

Beyond a FEW025 at IAH, most of the hints of an oncoming slide in flight conditions tonight have only materialized well to our east. High cirrus has hung tough, and as long as it does so, it appears that will hold degradation in conditions off. Still, that hint of MVFR at IAH indicates that this will be more of a delay, so I don't abandon the development of low clouds and/or fog just yet. I have tempered the intensity, keeping things more in the MVFR/IFR range, and only threatening LIFR or worse with sea fog at GLS. Should see a return to VFR towards mid-day as fog dissipates and clouds scatter.

Hint at approaching weak boundary by shifting winds late at the northern terminals, but not much confidence in where the boundary will stall out. This will have significant impacts on the 12Z and later TAFs, so have chosen largely to punt on that in order to not handcuff later shifts.