Sage Varahamihira in his writings in Brihat samhita has given the vital Jyotish clues about earth quakes. Read below what he said
Brahma, perceiving her broken speech, trembling lips, bent head and weeping eyes, spoke as follows :
O Indra, relieve the Earth of her grief ; throw thy weapon—the destroy the wings of mountains. Indra saying, It is done,” told the Earth not to fear and spoke to her us follows
Vayu (the wind), Agni (fire), Indra and Varuna (God of rain), will however henceforth shake thee respectively in the first, second, third and fourth, six hours of day and night, to indicate the future good or bad condition of the world.
When moon is in nakshatra of Vayu
The nakshatra of U. Phalguni, Hasta, Chittra, Svati, Punarvasu, Mrigasira and Asvini are known as the circle or division of Vayu. The previous symptoms of an earthquake of Vayu occurring when the Moon is in any of these seven nakshatra, will last for seven days.
These symptoms are : the sky will be filled with dust and smoke, violent winds will shake the trees, and the rays of the sun will appear dim.
In a Vayu earthquake the crops will perish ; the Earth will become dry ; forests will gather ; medicinal plants will be destroyed ; and tradesmen will be afficted with dropsy, asthma, madness, fever and phlegmatic affections.
Prostitutes and men handling weapons, physicians, women, poets, musicians, merchants, painters and sculptors will suffer miseries, as well as the people Of Surat, of Kuru, of Magha, of Dasarna and of Matsya.
When moon is in nakshatra of Agni
The asterisms of Pushya, Kritika, Visakh, Bharani, Maglib, P. Bhadra and P. Phalguni are known as the circle of Agni. the previous symptoms of an earthquake of Agni occurring when the Moon is in any of these seven asterisms, will last for seven days.
These symptoms are: the sky will be filled with the light of fulling meteors, and the appearance of Digdaha will be seen about the horizon, and fire and wind will rage over the land.
In an Agneya earthquake, the clouds will destroyed; tanks and lakes will become dry; rulers will become hostile to one another, and mankind will suffer from ringworms, cutaneous eruptions, fever, spreading itch jaundice.
Also men of bright appearance, cruel men and the people of Asmaka, Agna, Balhikn, Tangna, Kalinga, and of Dravid, and numerous hillmen will suffer miseries.
When moon is in star which are known as Circle of Indra
The asterisms Of Abhijit, Sravana, Dhanishta, Rohini, Jyestha, U. Aghandhan and Anuradha are known the circle of Indra- The previous symptoms of an earthquake of Indra occurring when She Moon is in any of these seven are follows :
Clouds like 80 many moving mountains, roaring aloud, attended by lightning and black as the horn of buffalo, 88 the bee and the black cobra, will yield abundance Of rain.
In an indra earthquake, the Vedas, men of high caste and of high families, rulers and commanders of armies, will perish. Dysentery, inflammation or swelling of the neck, diseases of the face, and the vomiting diseases will amice mankind.
Banaras,yugandhara, Kirat ,Keera, Abhisara, Hala, Madra, Arbuda and Malawa will suffer, and there will be rain to suit the wants of the people.
When moon is in star which are known as Circle of Varuna
The asterisms of Revati, P. Ashadhan, Aslesha , R. Mula, U. Ashadha & and astatabhishek are known as the circle of Varuna. ‘I’he previous symptoms of tin earthquake Of Varuna occurring when the Moon is in any of these seven asterisms are as follows :
Clouds of the color of the blue lotus, of the bee and of collyrium, sounding agreeably, in masses and attended by lighting, will yield sharp rain.
In a Varuna earthquake persons working at the sea or in rivers will perish ; there will be excessive rain and rulers will cause to be hostile. The people of Gonardha, Chedi, Kirata and Videha will suffer miseries.
The effects assigned to earthquakes will occur within six months ; those assigned to the other Utpatas will occur within two months : these occurrences are classified by some under the heads of the four circles above referred to.
Meteoric falls’ cloud-eastless, dust—storms, thunder— bolts, earthquakes, fiery appearances about the horizon, violent winds, solar and lunar eclipses, changing in the of stars .
Rainfall from a cloudless sky is the Simultaneous occurrence of wind and rain, the appearance of smoke and sparks where there is no fire, the entry of wild animals into villages, the appearance of rainbow in the sky at night ;
Any unusable appearance of the sky at sun-rise or sun-set, broken or imperfect halos, rivers running in opposite directions, there being heard the music of the drum in the sky, and the like unusual occurrences should be classified under the heads Of the vayu, Agni, varuna, indra.
As regards the effects of earthquake classified with respect to time and Nakshatra, whenever there is an inconsistency, the indra character with respect to time will take precedence over the Vayu character with respect to Nakshatra; and the Vayu character with respect to time over the indra character with respect to Nakshatra, and so in the case of the Varuna and Agneya character of each earthquake, division with respect to time takes precedence over division with respect to Nakshatra.
If an earthquake should partake of the character of one of Agni and Vayu, the chief ruler will perish, and mankind will suffer from hunger, fear, death and drought.
1f an earthquake should partake of the character of one of Varuna and of Indra, there will be prosperity in the land, good rain and gladness of heart, cows will yield much milk, and rulers will cease to be hostile.
If an earthquake should partake of the character of of Indra and of Agni, the people of Asmarathya, Pata, Chara, Abhira, China and Marukaccha and prosperous ruleras will suffer miseries.
In the Case of those Utpatas for the effects of which no period has been given, the rule is as follows: if the occurrences belong to the circle of Vayu, the period is four fortnight; if to the circle of Agni, three fortnights; if of Indra, seven days; and if of Varuna, the effects will come pas immediately.
In an earthquake of Vayu, the shock will be felt at a distance of two hundred Yojanas (1,000 miles); in one of Agni, 110 Yojanas; in one of Varuna, 180 Yojanas, and in one of Indra 160 Yojanas.
If after the occurrence of an earthquake another should occur on the 8rd, 4th, 7th, 15th, 80th or 45th day the chief ruler will perish.