Satellite Liaison Blog

Slow-moving storms impacted Florida’s Atlantic Coast to kick off November, bringing over 20″ of rain to some locations. The NWS Weather Prediction Center (WPC) issued a Day 1 Slight Risk Excessive Rainfall Outlook (ERO) for most of Florida’s East Coast for the period ending at 1200 UTC 02 November 2026, followed by a Moderate Risk […]

GOES water vapor imagery is used by forecasters to monitor important atmospheric moisture and upper-level features, but the vertical layer being sensed can vary considerably depending on atmospheric conditions. An example from 30 October 2026 provides a good opportunity to demonstrate this using water vapor weighting functions. In their 1845 UTC AFD, NWS Springfield, MO […]

A potent shortwave trough enhanced by the subtropical jet laid the foundation for a late-season severe weather setup in the Central Plains on Monday November 2nd. This blog post will ‘follow along’ with the event through the eyes of the Storm Prediction Center and how satellite imagery supports these types of events. Leading off the […]

A low meandering off the East Coast last week slowly gained tropical characteristics to become Subtropical Storm Josephine before undergoing an explosive extratropical transition. The NWS Ocean and Tsunami Center (OTC) signaled a ‘Possible Tropical Cyclone’ in its North Atlantic 72 Hour Surface Forecast, valid for 1200 UTC 22 October 2026. At 0600 UTC 21 […]

A strong upper-level low developed over the eastern Pacific and slowly approached California during 20–21 October 2026, bringing locally heavy rain and thunderstorms to portions of the California coast. Farther inland, anomalous moisture transported north from the subtropical eastern Pacific supported heavy rainfall, flash flooding, and severe thunderstorms across parts of the S...