Storm over Chalk Lagoon

In the early morning a low, leaden sky gathered over Chalk Lagoon: the wind picked up sharply and within minutes large waves began to roll across the shallows. The storm arrived quickly—without extended thunder buildup—and in under an hour the flats were transformed into a field of choppy currents and spraying water.

Observers at the shoreline recorded a young mosasaur seeking deeper holes for shelter; its behavior grew notably cautious, with frequent dives and abrupt changes of course. Several Pteranodon, usually perched on coastal ledges, shifted activity toward inner bays and flew lower than usual, using gusts to conserve energy and avoid being tossed by turbulent air.

Fringe vegetation and clusters of shell beds were partly swept away, leaving faint new channels across the shallows. Park crews restricted shoreline access and rerouted patrols to monitor juveniles and document changes to the lagoon's contours.

By midday the wind eased somewhat, but residual waves and murky water remained. Observers kept heightened monitoring through the day, focusing on areas with stronger currents where weakened or young animals might be at risk. A scheduled survey of the shore and recording of altered topography will begin once the water stabilizes.