The next chance of launch is Saturday at 3:22 p.m. ET, with a backup window of 3 p.m. ET on Sunday.
“The main concern is the flight through the rain, as well as the rules of anvil and cumulus clouds associated with the afternoon assembly,” according to the official squad’s weather forecast Thursday morning.
There was a 50/50 chance Wednesday to clear the season, and 10 extra minutes could give the launch team a green light. But the timing should be justifiable for a smooth meeting at the International Space Station.
“Weather is the one thing we really can̵7;t control in our missions so unfortunately, it’s caused us to scrub today,” NASA tweeted.
At this time of year, it is not uncommon for a sea breeze along Florida’s east coast to cause rainstorms in the afternoon.
It is not always easy to determine exactly where one of these storms will appear. However, forecasters can look at the overall pattern to see if conditions are present for hurricane development.
Sundays have rain chances in the forecast as well, albeit a slightly lower chance than Saturday, Brink said Thursday. The weather squadron also has a 40% chance of favorable conditions on Sunday.
Rocket-triggered lightning is a danger of launch
An entire team of meteorologists is on hand from the 45th Space Wing and SpaceX to determine if the weather will scrub the launch. As of Wednesday, the decision can be made up to the lift.
With the NASA broadcast on Wednesday, the disappointment was evident as the weather team called it a no-go for launch.
For example, lightning in the area will cancel out a flight, such as a cloud with a large enough field of electricity to produce a triggered lightning. This occurs when a giant electric spark occurs when a large rocket flies through a strong enough atmospheric field.
The electric field required to force the rocket-triggered lightning is less than the natural lightning.
“Any kind of lightning can cause serious damage to the rocket and endanger public safety,” the squadron states.
Forecasters need to monitor the wind.
If there is a sustained wind of 30 mph or more than 162 feet above the launch pad, cancel the mission.
The weather squad must also monitor the weather because if the Crew Dragon capsule encounters a problem, it must have a safe splashdown location.
CNN meteorologist Jennifer Gray contributed to this report.