Capt. Paul Lucyk: This is the LWO on the weather conference net. This briefing will take place in the WRCC using CCTV Channels 9 through 13.
Beginning with Channel 9, we have our latest enhanced infrared satellite loop with launch trajectory highlighted in green. That does show some real thin
cirrus just above us and can't really see it, but in the darker color, the marine layer stratus, firmly in place along the Central Coast and we expect that
to continue throughout the launch and be there, which is constraint for concern tonight. Looking at Channel 10, from the upper left-hand corner is our composite
reflectivity from the radar. That gives us an idea that we have high pressure in place, just some ground clutter in the area. No significant echoes.
Looking at Channel 11, we have our five-hour history of wind speeds out at Tower 102 at SLC two. That does show the winds have tapered off from
15 knots down to single digits and have become variable. Looking at Channel 12, this is a five-hour history of wind direction.
And, as I said, we were northwesterly up until about two hours ago and we switched around to the northeast and has since
become somewhat variable. And we expect that to continue through T-0. Looking at Channel 13, apparently we have no weather warnings,
watches or advisories issued or in effect at this time. Our wind speeds from the first two balloons, from the RS1 and L1, have decreased to
about 30 knots at 41,000 feet for a maximum. So it is very light and expected to continue at T-0. Wind shear, a couple of shear layers right
off the surface at about two to three thousand feet, we did see a shear layer. Again, it is decreasing as we go through the balloon runs
and we expect that trend to continue.
For our launch forecast, we're calling for eight-eighths coverage of the stratus, 100 feet to 1100 feet, seven-eighths coverage for cirrus above
that and it's very thin cirrus. Visibility of one half mile with fog. Temperatures in the low 50s and our winds from the northeast at four to
eight knots. Marine safety weather constraints, currently we are green for all safety constraints. Forecasting green at T-0 through
T plus two hours.
We're currently green for launch. Agency weather constraints forecasting green at T-0 through T plus two hours.
Our overall probability of violation is zero percent. Should we go into a 24-hour scrub,
the forecast calls for continued stratus conditions bases at 500 feet, tops at 1500 feet and then cirrus above that, four-eighths coverage,
twenty-three to twenty-eight thousand feet.
Three miles visibility with fog. Temperatures in the low 50s again, and winds from the north, ten to fifteen knots.
Probability of violation for a 24-hour scrub would be zero percent. That concludes the weather briefing. Are there any questions?