OCTOBER WEATHER.
The most noticeable features of the month are: the hurricane of the 17th to 23d; lower temperatures in the districts east of the Rocky mountains; large excess of rainfall in some districts and large deficiencies in others; low water in the rivers.
Areas of High Pressure.—These have generally appeared in the Upper Missouri valley, from whence their movements have been south and eastward across the country. Their advance has been frequently marked by high northerly winds and gales, especially when preceded by decidedly low-pressure areas, in the more northern districts and on the Texas coast. When rainy weather has preceded them, the fall in the temperature has been sufficient to turn the rain into sleet and snow, while frequent and heavy frosts have been produced.
Areas of Low Pressure.—Nine have been traced. Excepting the hurricane of the 17th to 23d, the centres of all have moved over the northern sections, and further northward than during previous Octobers. They have been frequently accompanied by barometric troughs, extending south or southwestward toward the Gulf, in which rainy weather and high winds or gales have prevailed.
Temperatures.—
| Maximum. | Minimum. | |||
| Albany | 70 | deg. | 23 | deg. |
| Boston | 70 | " | 26 | " |
| Buffalo | 73 | " | 24 | " |
| Cape May | 73 | " | 34 | " |
| Chicago | 73 | " | 28 | " |
| Cincinnati | 74 | " | 29 | " |
| Cleveland | 75 | " | 26 | " |
| Detroit | 72 | " | 24 | " |
| Duluth | 67 | " | 23 | " |
| Jacksonville | 85 | " | 43 | " |
| Marquette | 73 | " | 28 | " |
| Mt. Washington | 48 | " | 5 | " |
| New Orleans | 84 | " | 50 | " |
| New York | 73 | " | 31 | " |
| Pike's Peak | 41 | " | -2 | " |
| Philadelphia | 75 | " | 31 | " |
| San Diego | 80 | " | 48 | " |
| San Francisco | 72 | " | 52 | " |
| Washington | 78 | " | 30 | " |
The first frost of the season is reported from a large number of stations, and first snow from about twenty.
Verifications.—The average is 92.8 per cent. for the weather; 90.1, wind direction; 91.1, temperature; 87.7, barometric changes. For the whole country the average verified is 90.4 per cent. There were four omissions to predict out of 3,720, or 0.1 percent.
A severe earthquake shock was felt at San Francisco at 9:20 p.m., on the 6th, lasting ten seconds; motion from northwest to southeast. A second and lighter shock was felt the same day.