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Effect: By means of this spell the caster causes the atmosphere to instantly precipitate all of its water vapor in the form of huge drops of rain,
the resulting condensation not only causing a true downburst of rain but also sucking more vapor into the AREA to likewise be precipitated.

The cloudburst will effectively drench everything in its AREA of effect within 1 segment,
for its rain will fall at the rate of 1/10 inch per segment,
or 1 inch of rainfall in 1 round.

1. Normal Fires
2. Magical Fires
3. Arid Regions
4. Low Temperatures

MC: The material components for the spell are powdered silver and powdered iodine crystals,
plus the cleric's holy symbol.

1. NORMAL FIRES
All normal fires within the AREA of effect will be extinguished by a cloudburst --
small ones instantly,
medium-sized ones in 3-5 segments,
and large-sized ones in 8-10 segments.
<space>

2. MAGICAL FIRES
Magical fires will also be extinguished by a cloudburst,
with the following general rules applying:

    Permanent magical fires will re-light in 1-2 rounds.
    Small, rekindable magical fires such as that of a flame tongue sword <link> will be affected only during the actual cloudburst.

    Spells such as [produce fire] and [burning hands] will be negated.
    Large-area spells such as [fireball], [flame strike], [wall of fire], etc.,
    will,
    in the course of being extinguished,
    vaporize the rain into a cloud of steam covering an AREA four times as large as the spell's area of effect
    (i.e.,
    a cylinder of up to 12" in diameter and as much as 24 " high).
    This steam will inflict 1-3 points of damage per round on normal creatures within its AREA,
    and will do twice that damage to cold-dwelling or cold-using creatures.
    The cloud of steam will persists for 2-5 rounds,
    half that if a breeze is blowing,
    or only 1 round if a strong wind is blowing.
        <define breeze, strong wind>
        <note: the above is a good guide to the effects of heavy precipitation on fire spells>

3. ARID REGIONS
In arid regions,
the cloudburst will act only as a double-strength [precipitation] spell.
In hot and humid areas,
the duration of the spell will be extended to 2 rounds.

4. LOW TEMPERATURES
In areas with a temperature between 33° and 31° F. inclusive,
sleet rather than rain will fall,
with ice and slush being formed when it accumulates.
In temperatures of 30° F. and lower,
the cloudburst becomes a snowburst,
with one inch of snow per segment falling.
 

<formatting changes were done here>
<note: the original of this spell was at cloud dragon in the MM2>
<see notes at precipitation>
 
 

Druid: This spell is essentially the same as the 3rdlevel
clerical spell of the same name, with only the following special
notations and additions: Lightning cannot be called by the use of a
cloudburst spell, and a call lightning spell cannot be used in the same
area at the same time. Also, the druid must use mistletoe as an additional
material component.

Magic-User: This spell is identical to the 3rd-level clerical spell
of the same name, except that a holy symbol is not part of the
material component.
 

Wu Jen: This spell immediately precipitates all moisture in the air into a drenching rain that falls at 1/10" per segment.
The cloudburst quenches normal fires (small ones in 1 segment, medium sized ones in 3-5 segments,
and large ones in 6-10 segments), and douses magical fires for 1-2 rounds. Large-area fire spells are
extinguished, and in the process turn the rain into a cloud of steam four times the spell's original effect, lasting
2-5 rounds and inflicting 1-3 points of damage per round (double for cold dwelling or cold-using creatures). A
cloudburst may be affected by climate and temperature of the area.

Wu Jen.MC: A small kite and some rock salt.