Rocket Lab’s Electron rocket is vertical on the pad at Launch Complex 1 in Mahia, New Zealand. NASA’s Time-Resolved Observations of Precipitation structure and storm Intensity with a Constellation of Smallsats (TROPICS) CubeSats are secured in the payload fairing atop the rocket. TROPICS is scheduled to launch on Monday, May 1, at 1 a.m. New Zealand time from Launch Complex 1, Pad B. TROPICS will provide data on temperature, precipitation, water vapor, and clouds by measuring microwave frequencies, providing insight into storm formation and intensification.