Before & after September 18

Miami before and after

The hurricane struck a place already being transformed by land sales, construction and migration. Its history begins before the warning flags—and continues into another frightening October.

How to read these photographs

A young city trying to look like the future.

Miami incorporated in 1896. By the middle of the 1920s, the city and Miami Beach were being remade at remarkable speed by railroads, automobiles, paved streets, causeways, dredging, hotels, utilities, aviation and speculative construction. Many things that look ordinary or old-fashioned to a modern visitor were then signs of money, mobility and technological progress.

Automobiles meant modern mobility

Busy streets, garages and paved roads were visible evidence that Miami had moved beyond the transportation world of its frontier years. A street full of cars was part of the boom story, not merely background traffic.

Airplanes were news

Commercial aviation was still emerging as a practical transportation network. Florida Airways began contract airmail service in 1926, connecting Miami with Florida cities and Atlanta; aircraft later carried emergency cash and supplies after the hurricane.

Miami Beach was engineered

Causeways, dredging, sewer systems, pumping stations and reclaimed land made rapid barrier-island development possible. Much of that infrastructure was itself new when the hurricane struck.

Aerial views were unusual

An Army photograph from the air was not routine imagery. Aviation and aerial photography offered a new way to see an expanding city, and the 1924 view makes the boom legible from above.

Skyscrapers symbolized ambition

Projects such as the Shoreland Arcade were conceived during the 1925 boom as evidence of metropolitan scale. Its unfinished form later became an emblem of ambitions interrupted by bust and hurricane.

Information moved differently

There was no weather radar, satellite imagery or television. Ship reports, Weather Bureau observations, telegraph, radio and newspapers were the communications network through which warnings and disaster news moved.

Context sources: City of Miami Beach history · Florida Memory: first Miami airmail plane, 1926 · Library of Congress: Shoreland Arcade · NWS Miami: 1926 warning environment.

$244,815 → $42 million

Miami Beach’s total assessed property value rose from about $244,815 in 1915 to $42 million in 1925. The jump from $12 million in 1924 to $42 million one year later captures the extraordinary speed of the boom.

56 hotels · 4,000 rooms

By the end of the boom, a City of Miami Beach historical report describes 56 hotels with about 4,000 rooms, 178 apartment houses and 858 private residences—an enormous built environment for a city incorporated only in 1915.

Even the utilities were new

Miami Beach was installing and expanding sewer systems, pumping stations and water infrastructure during the same years the hotels and subdivisions were rising. Modern urban services were being built almost simultaneously with the city they served.

Miami Beach figures and infrastructure history: City of Miami Beach historical-designation record.

01 · The promised city

From winter resort to land rush.

Miami’s rise depended on a connection to the rest of the country. Henry Flagler brought the railroad south and financed streets, water, power and a resort hotel. The City of Miami incorporated on July 28, 1896. A railway terminus and a winter destination could now become a year-round city. City of Miami history.

The Royal Palm image opens this story in 1901, well before the feverish speculation of the 1920s. Its long verandas face landscaped grounds: the attraction was a stay in a warm place, with a hotel organizing the visitor’s experience. The later McAllister and Urmey postcards show another scale of tourism—substantial buildings within the commercial city. Hotels needed staff, food, transport and construction workers. Visitors were only one part of the economy built around them.

The Royal Palm · 1901
The hotel’s long verandas and landscaped grounds present the resort city before the land boom. This photochrom print shows the west front of the Royal Palm. Source and credits.
Hotel McAllister · about 1925
A tall hotel dominates this postcard. Miami’s visitor economy offered rooms in large urban buildings as well as the earlier resort hotels. Source and credits.
Hotel Urmey · about 1925
The Urmey’s street-facing facade fills the postcard. Such views advertised individual hotels as destinations within a growing commercial city. Source and credits.

A city to visit—and a future to buy.

Hotels did not advertise alone. Concerts in Royal Palm Park offered a public social life, and Burdine’s presented shopping on Flagler Street as an attraction. These postcards circulated an image of a comfortable, established city. Their colors were printed at the time; they are historical promotional objects, rather than modern colorizations.

A concert in Royal Palm Park · about 1920
People gather around the bandstand in Royal Palm Park. Public entertainment helped sell the experience of a winter stay, alongside the hotels and waterfront. Source and credits.
Burdine’s on Flagler Street · about 1920
The department store anchors a busy shopping street. Retailers supplied residents while also giving winter visitors another reason to spend time downtown. Source and credits.
Miami Bank and Trust · about 1920
The bank building stands at the corner of Northeast First Avenue and First Street. Its postcard places a financial institution among the landmarks used to represent the growing city. Source and credits.

By 1924, the appeal extended beyond a winter holiday. Buyers were purchasing a stake in Miami’s anticipated growth. Paul S. George’s history places the boom’s acceleration in 1924 and its crest in late 1925. This chronology changes the hurricane story: September 1926 struck after the speculative peak, when the city was already losing the momentum on which many expectations depended. George, “Brokers, Binders, and Builders”.

Miami from the air · December 1924
An aerial view of Miami before the Great Hurricane. The archival sheet is stamped December 1924.
Photograph provenanceNational Archives 23936925, U.S. Army Fourth Photo Section, Maxwell Field. Maxwell Field was an Army airfield in Montgomery, Alabama. The stamp records receipt in December 1924; it does not establish the exposure date or the purpose of this particular flight. Original catalog record · Army Air Forces records.

Why this view mattered in 1924: aerial photography itself was still a comparatively new way to understand a city. From above, the street grid, empty tracts and expanding built-up area turned Miami’s growth into something planners, promoters and buyers could literally see.

The aerial view shows the street grid extending beyond densely built blocks. In the development map below, that capacity to expand becomes an explicit promise: a projection carries Miami forward to 1935. The map joins existing geography to an imagined future. Land could be sold on the expectation of a neighborhood that had yet to fill with buildings.

Miami’s projected expansion
Sauer & Seghy, 1925–1926. The map’s 1935 development is a projection. Library of Congress.

Modern infrastructure was part of the sales pitch: roads, utilities, bridges and planned subdivisions made projected growth seem tangible. The boom sold not only land, but confidence that engineering and transportation would keep turning undeveloped acreage into city.

There was a physical limit to this rapid expansion. Building a city required materials to arrive through its rail and harbor connections. On January 10, 1926, the Prins Valdemar capsized in the harbor channel. A single vessel could obstruct the supply route on which a construction economy depended. The accident preceded the great hurricane by eight months. Museum of Miami historical account.

When the September hurricane tore roofs away and drove vessels ashore, it damaged more than a resort landscape. It struck homes, workplaces and the transport system of a rapidly enlarged city. The promise of future value could not shelter a family or replace a destroyed roof. The next rooms follow that change from the advertised city to the city photographed after the storm.

Continue to landfall →

02 · People on the move

Miami was built by more than its promoters.

Migration across the Florida Straits preceded the boom. Black Bahamians worked in Coconut Grove’s farms and inns from the late nineteenth century. Some made seasonal journeys to harvest crops and returned to the islands; others stayed and established families. Vizcaya’s history describes as many as 400 Bahamian workers arriving for a season. Their movement connected Miami to the islands through labor and kinship long before the 1926 storms followed the same regional geography. Vizcaya, “The Bahamian Work Force”.

Rail access brought people from elsewhere in the United States, including Black migrants joining the city’s workforce. Segregation shaped where residents could live and work. Black Miami was central to building and operating the tourist city, while the development publicity seldom placed its communities at the center of the picture. Museum of Miami, early city history · Raymond A. Mohl, Bahamian immigration.

About 30,000Miami city population, 1920
110,637Miami city population, 1930

The city grew dramatically over the decade. These totals include changes in municipal boundaries as well as population change; they are not a count of arrivals alone. PBS historical account · U.S. Census Bureau, 1930 city totals.

For these residents, September’s disaster was not an interruption to a holiday. It meant damaged homes, lost work and the immediate problem of food and shelter. October’s next warning would set thousands moving again—this time away from Miami.

03 · Before the incorporated city

1896 was not the beginning of storm history.

Miami’s incorporation is a civic milestone, not the beginning of settlement or weather observation on Biscayne Bay. The National Weather Service traces observations at Fort Dallas to 1839, with gaps, and records later observing sites around the bay. These fragmentary local records matter because there was no continuous modern Miami weather office throughout the nineteenth century. NWS Miami, South Florida weather-observation history.

1859 and 1865 · A regional hurricane record

NOAA’s reconstructed U.S. hurricane chronology includes southeast Florida impacts in October 1859 and October 1865. These regional classifications do not establish that either storm’s eye crossed the later City of Miami. NOAA hurricane chronology.

1878 · A Biscayne observer

The NWS history identifies James Sturtevant’s Biscayne observations during the September 1878 hurricane. This is a local documentary thread predating incorporation, rather than a storm added merely because its track passed somewhere in Florida. NWS observation history.

1888 · Before Miami’s incorporation

NOAA lists the August 1888 hurricane as a Category 3 impact in southeast Florida. That intensity is a modern reconstruction; it should not be presented as a category assigned by a Miami observer at the time. NOAA chronology.

1903 and 1904 · More regional warnings

September 1903 and October 1904 also appear as southeast Florida Category 1 impacts in NOAA’s chronology. Regional impact is not interchangeable with a downtown Miami landfall. NOAA chronology.

1906 · Mangroves, storm tides and the railway

Writing in 1926, Joe Hugh Reese looked back to the October 18, 1906 hurricane. He described a much smaller Miami and a Miami Beach landscape dominated by mangroves. His account recalls storm tides covering the island and wreckage caught high among the trees. The same coast that had held mangroves and scattered development would carry far greater human exposure twenty years later.

Reese connected the 1906 disaster to workers building the Florida East Coast Railway’s Key West extension and the deadly conditions faced by men at sea. His 1926 retrospective links the catastrophe to a project that carried Miami’s railway connection onward through the Keys. Reese, Florida’s Great Hurricane, “Record of Storm”.

The account complicates any suggestion that the region had no hurricane memory. Some residents remembered the earlier storm; others had arrived in a dramatically different city. Memory and exposure had changed at different speeds.

1909 and 1910 · The Keys and southwest coast

NOAA identifies southwest and southeast Florida impacts in October 1909, and southwest Florida impacts in October 1910. The 1910 entry should not be retold as a direct Miami landfall. NOAA chronology.

04 · An already active season

The warning before September.

On July 26, a hurricane crossed Nassau. The following day Miami’s observer estimated winds of 50 mph on Biscayne Bay and Miami Beach; the local damage estimate was about $75,000 in 1926 dollars. The hurricane continued north and made Florida landfall on July 28. Miami’s experience was far less destructive than Nassau’s—and far less destructive than what September would bring.

The basin remained active: a late-July Atlantic storm, an August Louisiana hurricane and several September systems preceded the great Miami hurricane’s landfall. A season could threaten different places in very different ways. NOAA’s reconstructed 1926 season and contemporary reports.

July gave Miami a recent storm to remember. It did not give residents a reliable preview of a much stronger hurricane striking the city directly. The landscape had filled with newcomers and buildings since earlier destructive storms. The warnings in September would reach a city whose exposure had grown much faster than its experience.

Read the weather records →

Nassau Guardian account reproduced in the July 1926 Monthly Weather Review
The Nassau Guardian’s account of July 28, reproduced by the Weather Bureau. Its description follows preparations, rising water and darkness as the July storm reached Nassau. Read the original report.
05 · After the great hurricane

Another warning. Thousands leave.

October’s hurricane struck Cuba and frightened a Miami still recovering from September. On October 20, about 5,000 people left after hurricane warnings were displayed. Miami’s monthly weather report describes rumors of hurricanes and tidal waves and severe public anxiety. Miami monthly report reproduced by NOAA.

For a city marketed as a destination, the reversal was stark. Only months earlier, maps and postcards had invited people to imagine their future here. Now another warning could send thousands away. A repaired street or hotel did not immediately restore confidence, and a return of visitors was not the same thing as recovery for residents who had lost their homes.

The October scare belongs to the story of the great hurricane because September changed how the next threat was received. The disaster continued to shape decisions after its winds had ended. Continue through the aftermath →

Return to the storm exhibit · Research library · Historical image credits

Rebuilding

The hurricane changed building regulation - but it did not create it from nothing.

Miami already had a detailed building ordinance in 1919. The surviving City of Miami ordinance covers permits, occupancy, structural classifications, foundations, walls, loads and many other construction requirements. Miami Beach also reported in its own 1926 annual report that a building code had already been drawn, adopted and rigidly enforced as the city expanded.

That matters because a familiar later claim says the 1926 hurricane produced the nation's first building code. The primary records show a more precise story: building regulation existed before the storm. What the disaster did was expose weaknesses in boom-era construction and accelerate a much more consequential hurricane-resistance and enforcement reform effort. Florida's official Great Floridians profile records that John J. Farrey was appointed Miami Beach chief building, plumbing and electrical inspector after the hurricane, assigned to inspect buildings and recommend a code. By 1931, a federal Bureau of Standards survey listed Miami's code date as 1919 and Miami Beach's as 1926, with Miami Beach then revising provisions involving masonry, footings, live loads, beams and rafters.

The archive therefore distinguishes three things that are often collapsed into one sentence: pre-hurricane municipal codes, post-hurricane inspection/reform, and the later South Florida Building Code, which Miami-Dade did not formally adopt until 1957.

Bureau of Standards, Letter Circular 306, table page 5. Explore the original pages · Read the complete federal survey.
Meteorology in context

A hurricane climate met a city with little hurricane memory.

South Florida was not new to hurricanes. Before 1926, powerful tropical cyclones had affected the Florida Keys and nearby waters in 1906, 1909, 1910, 1919, 1921 and 1924. But that regional history did not mean Miami’s rapidly expanding population had personal experience with a major hurricane. The National Weather Service notes that southeast Florida’s great population surge came between about 1910 and 1925 and that many residents along the southeast coast had never experienced a hurricane; during the boom years, only a tropical storm directly affected the southeast coast in 1924.

No “Category 4” in 1926

The five-category Saffir-Simpson scale was developed decades later, in the early 1970s. Calling the Great Miami Hurricane a Category 4 is a modern retrospective classification based on reconstructed maximum sustained winds—not terminology Miamians heard before landfall.

No familiar storm name

The hurricane was not officially called “Miami” in real time the way modern storms receive names. The title Great Miami Hurricane is a historical identifier. Operational Atlantic naming came much later.

Warnings came through a sparse network

The Weather Bureau first knew of the cyclone through ship reports in the tropical Atlantic. Storm warnings were authorized for the Florida east coast at noon on September 17; the Miami office raised hurricane warnings around 11 PM, only hours before the worst conditions arrived while much of the city was asleep.

The eye was dangerously deceptive

An eye can bring a sudden lull after violent winds. In 1926, people unfamiliar with hurricanes came outside during that calm believing the storm had ended. The opposite side of the eyewall then returned with destructive winds from a different direction.

Terms a modern visitor should read carefully

Maximum sustained wind
An estimate of the strongest sustained wind in the cyclone, not the same thing as a brief gust. Historical values may be reconstructed when instruments failed or observations were sparse.
Central pressure
The air pressure near the cyclone’s center. Very low pressure is a sign of an intense hurricane, but pressure is not itself a wind-speed measurement.
Radius of maximum wind (RMW)
The distance from the center to the ring where the strongest sustained winds occur. It helps describe the size of the hurricane’s inner core.
Storm surge
An abnormal rise of seawater generated by the storm. Storm tide is the total observed water level after adding the astronomical tide to the surge.
Cape Verde hurricane
A historical meteorological term for a long-tracked tropical cyclone that develops in the far eastern tropical Atlantic near the Cabo Verde region and travels westward. It describes origin and track history, not a category of strength.

Sources: NWS Miami: Great Miami Hurricane · NWS Key West: early-20th-century tropical cyclones · NOAA/AOML: Saffir-Simpson history.

Hurricanes 101

A much larger coast

The same storm, far more property at risk.

$243 billion2023 housing-based normalization
$288 billion2023 population-based normalization

These are the two principal Great Miami Hurricane estimates in the peer-reviewed study published in June 2026. The reference year is 2023: the values adjust the historical loss for inflation, real wealth and modern exposure. They are aggregated U.S. storm losses, not Miami city alone.

The study separately estimates about $218 billion for the southeast Florida first landfall under its updated housing-unit method. The difference between $243B and $288B reflects two exposure measures; it is not a confidence interval.

The authors also caution that the normalization does not yet account for modern building-code resilience and has other geographic/exposure limitations. That is why this exhibit reports method, geography and reference year rather than presenting one number as certain.

Damage methodology