Today is the 23rd anniversary of the horrible Loma Prieta earthquake. We are having unseasonable hot, dry weather in the Bay Area, AND the Giants are playing in the World series. This spooked a lot of people.
Location
Address
San Francisco, CA
Latitude
37° 50' 52.87'' N (37.848019°)
Longitude
122° 27' 13.01'' W (-122.453613°)
Elevation
-
Time and Duration
Local Date & Time
2012-10-17 19:47 PDT
UT Date & Time
2012-10-18 02:47 UT
Duration
≈3.5s
Direction
Moving direction
From down left to up right
Descent Angle
45°
Moving
Facing azimuth
-1°
First azimuth
-1°
First elevation
48°
Last azimuth
-1°
Last elevation
25°
Brightness and color
Stellar Magnitude
1
Color
bright yellow-orange
Concurrent Sound
Observation
Yes
Remarks
-
Delayed Sound
Observation
Yes
Remarks
A couple of seconds at most.
Persistent train
Observation
Yes
Duration
4s
Length
20°
Remarks
Loud explosive sound. It sounded like thunder. My view was partially obscured by buildings.
