Inaccurate?

Fog Cloud

(Player's Handbook v.3.5, p. 232)

Conjuration (Creation)
Level: Druid 2, Jester 2, Death Master 2, Sha'ir 2, Wu Jen 2 (Water), Beguiler 2, Disciple of Thrym 2, Wizard 2, Sorcerer 2, Urban Druid 2, Water 2,
Components: V, S,
Casting Time: 1 standard action
Range: Medium (100 ft. + 10 ft. level)
Effect: Fog spreads in 20-ft. radius, 20 ft. high
Duration: 10 min./level
Saving Throw: None
Spell Resistance: No

A bank of fog billows out from the point you designate.
The fog obscures all sight, including darkvision, beyond 5 feet.
A creature within 5 feet has concealment (attacks have a 20% miss chance).
Creatures farther away have total concealment (50% miss chance, and the attacker can't use sight to locate the target).
A moderate wind (11+ mph) disperses the fog in 4 rounds; a strong wind (21+ mph) disperses the fog in 1 round.
The spell does not function underwater.