Earthquake between New York and Washington, here is the card with macroseismic effects

MeteoWeb

Macro seismic analysis

Earthquake epicenter: Dover, Delaware – USA

Date 30/11/2017                    UTC 21:47:31

Latitude 39.21° N                   Longitude 75.42° W

Magnitude 4.1                        Depth 8.1 Km

The following analysis shows the macro seismic effects based on a model hereby displayed. The reported macro seismic effects may vary (one or two levels, up or down) depending on the characteristics of local geology or buildings. If not expressly indicated, earthquake perception is intended during the day. Peak ground acceleration is expressed in cm/s².

Values and terms do not coincide with other seismic scales.


Nearby cities 1 Km far from the epicenter:

Delaware: Donas Landing

8-         Notable earthquake                           30 < PGA < 60            ( V MCS )

Inside the houses almost everyone feels the earthquake, and sometimes even the preceding roar; outside many perceive a vibration. Seismic shake is intense and wakes up several people. Objects vibrate, some of them fall. Chandeliers oscillate widely. Doors and windows open and close. People are scared and run out of buildings. Old houses and monuments are lightly damaged. Several reports arrive from the affected area.


Nearby cities from 1 Km to 11 Km far from the epicenter:

Delaware: Dover, Little Creek, Leipsic

7-         Moderate earthquake                       15 < PGA < 30            ( IV MCS )

Inside the houses, many people feel the earthquake. Seismic vibration is very intense and wakes up who’s sleeping. Chandeliers oscillate widely. Windows and objects shake; People are scared; many of them get out of buildings. Outside many people clearly feel the earthquake and hear the preceding roar. Buildings are not externally damaged. Many reports arrive from the affected area.


Nearby cities from 11 Km to 21 Km far from the epicenter:

Delaware: Smyrna, Kenton, Camden, Bowers

6-         Mild earthquake                                 8 < PGA < 15              ( III – IV MCS )

Lots of people inside buildings feel a strong seismic vibration. Chandeliers oscillate noticeably; crunches and tinkles can be heard. Someone of those who sleep, wakes up. Several people prefer to go outside, as a safety measure. Outside several people feel the vibration, they clearly hear that particular sound preceding the earthquake. Many reports arrive through the internet.


Nearby cities from 21 Km to 36 Km far from the epicenter:

Delaware: Milford. New Jersey: Bridgeton

5-         Light earthquake                                4 < PGA < 8                ( III MCS )

Inside buildings, some people feel a vibration. Chandeliers oscillate; A tinkle of glasses shattered can be heard. Someone decides to go outside, as a safety measure. Outside only a few people feel the earthquake; before the event, a few people hear a noise, like a faraway thunder. From the affected area many reports arrive.


Nearby cities from 36 Km to 60 Km far from the epicenter:

Delaware: Wilmington, Middletown, Leves. Maryland: Denton, Elkton. New Jersey: Vineland

4-         Weak earthquake                               2 < PGA < 4                ( II – III MCS )

A relevant number of people, in the highest and middle floors, feels a moderate vibration. Chandeliers oscillate; a tinkle of glasses shattering can be heard. People who perceive these effects  feel apprehension. Outside, only a few people feel the earthquake; someone hears a low frequency noise. A few reports arrive through the internet.


Nearby cities from 60 Km to 99 Km far from the epicenter:

Delaware: Laurel.  New Jersey: Filadelfia, Atlantic City. Maryland: Easton, Salisbury, Bel Air.

3-         Tenuous earthquake                          1 < PGA < 2                ( II MCS )

In the highest floors and in quietness, a few people perceive a light vibration. Chandeliers oscillate. People feel apprehension. Outside, almost nobody feels the earthquake. From the affected area, only a few reports arrive; sometimes a light sound is heard.


Nearby cities from 99 Km to 164 Km far from the epicenter:

Maryland: Washington, Baltimora, Rockville. New Jersey: Allentown, York, Lancaster, Hershey

2-         Insignificant earthquake                    0.5 < PGA < 1.0          ( I – II MCS )

In the highest floors and in quietness, a few people feel a very light vibration, but there isn’t any concern. Outside nobody feels anything. No sound of the earthquake can be heard. Only a few reports arrive through the internet.


Cities beyond 164 Km from the epicenter.

1-         Unperceivable earthquake                             PGA < 0.5       ( I MCS )

The intensity is irrelevant; the earthquake is recorded by seismic stations in the region. Even in the best-case scenario, people don’t feel the earthquake. No reports come from the area.