I teach physics in Puerto Rico. On 20 September 2017, Hurricane
Maria, a category 4 storm hit the island. I live in Trujillo Alto and my
house was without electricity for 105 days until 3 January 2018.
Today there are several hundreds of thousands of people in Puerto
Rico who do not have electricity and for those who do have power
the system is unstable with frequent blackouts. Hurricane Maria
hitting Puerto Rico was part of a hurricane season that included
massive destruction in Texas and Florida. Unless you have lived
through a similar experience, it is difficult to imagine what Puerto
Rico was like in the weeks after the hurricane. If you did not have
stockpiled in your house food, water, cash, gasoline, propane, or
medicine these things were only available from your neighbors or
in very limited quantities in the few stores that were open. There
was no telephone service and there were very few first responders
to answer your call. For a week and a half after the storm I was a
volunteer with the Municipal Emergency Management Office. The
day after the storm they had no generator and no communication
with the vehicles that left the office. The instruction was return in
3 hours so that we know that you are alive. And it was not only the
lack of telephone service. Radio and television stations were going
off the air. There were no newspapers, Internet, or postal service.
For most people the only connection with the world was an AM
radio operated with batteries. And the radio was filled with hospital
administrators making a desperate plea for a truck load of Diesel.
How many people died in Puerto Rico from Hurricane Maria?
The official answer is 64 and nobody believes it is valid. The news
network CNN spoke to about 100 funeral homes and came up
with 499. The New York Times newspaper puts the number near
1000. Traditionally in hurricanes, 90 percent of the deaths came
from water and not winds. It appears that in Hurricane Maria, that
the majority of the deaths were people with a preexisting medical
condition who died from a health care system that did not have
electricity, telecommunication or transportation. In the San Juan
metropolitan area, what were several weeks living without modern
society, was several months in the mountainous center of the island
where many roads were blocked by landslides. People could wait
6 hours to buy gasoline and then the hour of curfew would arrive,
and they would lose their place in the line. There were lines hours
long to obtain cash or visit the bank, supermarket, propane, or the
pharmacy. Private universities reopened a month after the storm
without electricity in the classrooms. Physics labs were modified to
do experiments without electronic sensors. Students worked near
the windows to have light. Doing a test, cell phones were used as
flashlights. The public University of Puerto Rico system and public
schools were slower to reopen.
In 1928 a category 5 hurricane hit the Caribbean and Florida.
In Puerto Rico it is called San Felipe and in Florida, it is called
Lake Okeechobee. The storm killed about 4000 people, mostly
in Guadalupe and Florida. The social crisis after the hurricane of
1928 was different than today. It is estimated that less than 10
percent of much smaller population had electricity, telephone, or
vehicles that used gasoline and Diesel. The transportation system
included carts pulled by horses and oxen. People lived in houses
with thatched roofs. In 1929 people were camped everywhere
looking for scraps of wood and metal to rebuild their houses. Many
people had not rebuilt before the economy collapsed in the Great
Depression. Malnutrition was common in Puerto Rico in the 1930s.
I have spoken to a man who in 1941 was below the minimum
weight to join the United States Army. There is one bright side to
Hurricane Maria. I am using data from more than 60 non-pumping
observation wells to create a groundwater level index that covers
the last 50 years. The goal is an index that is more representative
than any single observation well. The good news is that the
preliminary results are that Hurricane Maria is the largest recharge
event in the last 50 years. Hurricanes are born over the open ocean
where the friction is very low. A hurricane is formed over warm
water when the atmospheric conditions are just right. The damage
from a hurricane is after it forms and then crosses from the ocean
to the land. The rising concentration of carbon dioxide in the
atmosphere will cause the Earth and its oceans to become warmer.
Hurricanes are usually born in tropical waters but not directly over
the equator and they then travel to higher latitudes. In the process
they transport heat away from the equator. One hypothesis is that
powerful hurricanes will become most common as the waters of
the oceans get warmers. This is a reasonable hypothesis, but it is
unproven. The oceans regulate the climate of our planet. A central
question for climate change and ocean science is how common will
hurricane like Maria be? Will they hit Puerto Rico once every 80
years or once every 8 years?.