Kumukahi

Poul Anderson, "Pele" IN Larry Niven, Ed., Man-Kzin Wars IX (New York, 2002), pp. 3-95.

(Not a novel by my 100+ pages rule of thumb, especially since there are blank spaces at the ends of chapters.)

Kumukahi:

the inmost planet of the star, Pele;
ten Jovian masses;
spiraling inward;
temperatures soaring;
atmosphere distended into a 280,000 kilometer ovoid;
storms larger than terrestroid planets;
now orbiting only a million kilometers above the stellar photosphere;
revolving in less than half an Earth day and accelerating;
rotating in fifteen hours, slowed by tidal bulges;
night side flickering with lightnings reflected from planet-sized clouds, flashing with explosions or other atmospheric events;
day side burning, emitting incandescent gasses - some breaking free;
storms pouring along the inner tidal bulge;
a core of metallic hydrogen;
very few heavy elements.