बृहत्संहिता (आचार्य वराहमिहिर - स्थापत्य, खगोल, मौसम व जल विज्ञान)

Adh. XXVIII. Sl. 12-14] अष्टाविंशोऽध्यायः 251
Sloka 11.—When the Moon has the red hue of the
eyes of a parrot or pigeon or of honey, and when a
second Moon shines in the sky, there will be immediate
rain.
स्तनितं निशि विद्युतो दिवा रुधिरनिभा यदि दण्डवत्स्थिताः ।
पवनः पुरतश्च शीतलो यदि सलिलस्य तदाऽऽगमो भवेत् ॥१२॥
Sloka 12.—If there be peals of thunder at night
and blood-red lines of lightning, standing erect like rods
at day time, and if there be a cool breeze blowing from
the east, there would be immediate rain.
वल्लीनां गगनतलोन्मुखाः प्रवालाः
स्नायन्ते यदि जलपांसुभिर्विहङ्गाः ।
सेवन्ते यदि च सरीसृपास्तृणाग्रा-
ण्यासन्नो भवति तदा जलस्य पातः ॥१३॥
Sloka 13.—If the sprouts of creepers are turned up
towards the sky, birds bathe in water or dust, and
creeping worms betake themselves to the tips of grass,
there will be an immediate fall of rain.
मयूरशुकचाषचातकसमानवर्णा यदा
जपाकुसुमपङ्कजद्युतिमुषश्च सन्ध्याघनाः ।
जलोर्मिनगनक्रकच्छपवराहमीनोपमाः
प्रभूतपुटसञ्चया न तु चिरेण यच्छन्त्यपः ॥१४॥
Sloka 14.—At dawn or twilight, if the clouds
show the same colour as pea-cocks, parrots, blue-jays
or Chataka birds, or have the lustre of roses, and red
lotuses and resemble in shape waves, hills, crocodiles,
tortoises or fishes and are piled up with many folds,
they will pour down rain before long.