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See https://en.wikipedia.org/wiki/Hurricane_Maria and https://en.wikipedia.org/wiki/Hurricane_Irma for more details.

Track of Hurricane Irma

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Track of Hurricane Maria

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Basically 2095 are were reported killed in Puerto Rica as a result of the hurricane Maria, It made landfall in Puerto Rica September 22nd 2017. It affected several islands in the Carribean.

Impact on Internet performance

Puerto Rica

Below is seen a time series of the RTTs from SLAC to a target host in Puerto Rica starting September 1st, 2017 and ending October 31st 2017. This was the only target site in Puerto Rica being monitored by PingER at the time.The blue line shows the losses. It is seen that there is a two several day outage (100% packet loss) starting just after midnight September 19th 2017 and ending at about 8:00pm October 9th 2017. There are more outages following this with stability being achieved on November 13th, 2017. The 100% loss starting late September 8th may be partly due to hurricane Irma which passed about 60 mi (97 km) north of Puerto Rico late September 6th 2017, and the outage starting just after midnight September 19th 2019 caused by hurricane Maria.

See http://wanmon.slac.stanford.edu/cgi-wrap/frequency.pl?monitor=pinger.slac.stanford.edu&sites=www.cfse.gov.pr

...

&begin_day=1&begin_month=8&begin_year=2017&end_day=30&end_month=11&end_year=2017&plot=time&full=false&bin_width=1&metric=&

Dominican Republic

There are losses also reported for a target host in the Dominican Republic starting around 8:00pm September 6th 2017 (coinciding with hurricane Irma closely paralleled the north coast of Hispaniola throughout the day on September 7) and ending about 8:00pm September 7th 2017. Then again starting about at about 9:00pm September 20th 2017 and ending 3:00pm September 21st around 3:00pm 2017.

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See http://wanmon.slac.stanford.edu/cgi-wrap/frequency.pl?monitor=pinger.slac.stanford.edu&sites=www.unibe.edu.do&begin_day=1&begin_month=8&begin_year=2017&end_day=31&end_month=10&end_year=2017&plot=time&full=false&bin_width=1&metric=&data=false

Cuba

The two target hosts in Cuba reported multiple day outages starting September 9th due to hurricane Irma

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Se http://wanmon.slac.stanford.edu/cgi-wrap/frequency.pl?monitor=pinger.slac.stanford.edu&sites=www.uclv.edu.cu&begin_day=1&begin_month=8&begin_year=2017&end_day=31&end_month=10&end_year=2017&plot=time&full=false&bin_width=1&metric=&data=false

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See http://wanmon.slac.stanford.edu/cgi-wrap/frequency.pl?monitor=pinger.slac.stanford.edu&sites=www.egrem.com.cu&begin_day=1&begin_month=8&begin_year=2017&end_day=31&end_month=10&end_year=2017&plot=time&full=false&bin_width=1&metric=&data=false

Haiti

The impact here is less clear:

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See http://wanmon.slac.stanford.edu/cgi-wrap/frequency.pl?monitor=pinger.slac.stanford.edu&sites=www.brh.ht&begin_day=1&begin_month=8&begin_year=2017&end_day=31&end_month=10&end_year=2017&plot=time&full=false&bin_width=1&metric=&data=false

Bermudas

PingER monitored 3 target hosts in Bermudas during this time (August-0October 2017). Bermuda is not mentioned in the Wikipedia articles on hurricanes Irma and Maria. However, there do appear to be outages at this time.

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