What the Trump Hurricane Sharpie Claim Is and Why It Keeps Resurfacing
In late August 2019, as Hurricane Dorian approached the United States, then-President Donald Trump asserted that Alabama would be affected by the storm. In follow-up remarks and a staged presentation, he displayed a weather map with a black marker line highlighting Alabama, and suggested that previous projections had been adjusted. Critics and some media framed the marker edit as an attempt to mislead the public. Supporters argued the map aligned with earlier guidance. The episode became known as Trump Hurricane Sharpie, referring both to the physical marker on the map and to questions about how forecasts are communicated and corrected.
Timeline of Events and Official Statements
On August 28, 2019, during a weather briefing in the Oval Office, President Trump referenced an August 19 National Weather Service (NWS) Birmingham, Alabama, tweet that stated Alabama 'will most likely' see 'some impacts' from Dorian. The Birmingham office quickly clarified that their tweet referred to potential impacts from the outer bands, not the main cone of the storm. Over subsequent days, President Trump showed maps and photos with a bold black line over Alabama, indicating a corrected or extended forecast track. These materials were presented in a televised Rose Garden briefing on September 4, 2019. In that briefing, he argued that earlier private forecasts had shown Alabama in the path, and that the map he displayed proved the NWS had shifted its position. Multiple NWS offices issued statements reaffirming their scientific process and clarifying the role of model uncertainty in landfall projections. National Oceanic and Atmospheric Administration (NOAA) leadership later said they supported the agency’s forecasting independence.
Key Moments in the Event
- August 28, 2019: NWS Birmingham notes that Alabama will likely see impacts from Dorian’s outer bands.
- Early September 2019: President Trump displays annotated maps highlighting Alabama as a potential affected area.
- September 4, 2019: Rose Garden briefing presents maps and photos; administration asserts prior forecasts showed Alabama at risk.
- September 2019: Multiple NWS offices and NOAA issue statements on forecast procedures and scientific integrity.
Official Responses, Investigations, and Fact Checks
After the Rose Garden briefing, the National Weather Service issued clarifications emphasizing that forecast decisions are driven by data, models, and forecaster judgment—not political directives. NOAA convened an internal review to examine whether agency scientific integrity policies were followed. That review did not substantiate claims of political interference in the science. Multiple fact-check organizations labeled assertions that the map was doctored or that the Birmingham NWS office had been forced to change its tweet as misleading. They noted that the original and updated guidance both indicated uncertainty in the storm’s path, and that drawing a marker on a public map did not alter the underlying forecast models. Altogether, these responses and checks sought to separate process commentary from demonstrable evidence of scientific manipulation.
Key Facts at a Glance
| Attribute | Verified Detail | Source Type |
|---|---|---|
| Primary Date | August 28 – September 4, 2019 | Public statements and briefing records |
| Location Focus | Alabama and broader Gulf Coast projections | NWS and NOAA products |
| Agency Reviews | NOAA internal review on scientific integrity | NOAA summaries and related statements |
| Fact-Check Consensus | No evidence of fabricated or materially altered forecast data | Third-party fact-check organizations |
| Public Communication Issue | Confusion over certainty vs. potential impacts in outer bands | NWS Birmingham clarification |
Communication and Public Perception Dynamics
The episode illustrates how visual materials in emergency communications can magnify questions even when the underlying data remain consistent. In forecasting, projections often shift as new observations and model runs arrive; presenting one version of a map without context can suggest deliberate distortion. At the same time, emergency managers face pressure to convey actionable risk to the public. The Alabama outer-bands tweet shows how language about potential impacts can be interpreted differently by officials and audiences. The Sharpie marker became a symbol for perceived edits, overshadowing more technical discussions about forecast uncertainty. Public trust in weather information depends on clarity about both what is known and what remains uncertain.
Broader Implications for Weather Communication and Governance
Beyond the specific map and marker, the episode prompted discussions about how government agencies communicate probabilistic forecasts and how leadership uses or presents scientific materials. Forecasters emphasize that landfall cones represent areas where the center of a storm is most likely to go, not certainties about impacts, and that outer bands can affect regions outside the cone. The episode also highlighted tensions between political leaders and scientific agencies. While the NOAA review found no evidence of political interference in the science, questions about messaging and presentation persist. These lessons inform best practices for officials, communicators, and the public when interpreting and sharing weather guidance in future events.
Key Takeaways and Practical Context
The Trump Hurricane Sharpie discussion reflects enduring challenges in risk communication: balancing clarity with uncertainty, using visuals responsibly, and maintaining trust in scientific institutions. Understanding how forecasts evolve, why language about probability can be confusing, and how to read cone and spaghetti plots helps audiences make informed decisions. Fact checks and agency reviews have not shown that core forecast data were manipulated, but they have underscored the importance of transparency and precise language. As emergency communication practices evolve, this case remains a reference point for evaluating the intersection of politics, science, and public messaging during weather events.
Related Topics and Further Reading
For deeper context on similar topics and related subjects, consider exploring hurricane forecasting methods, the role of the National Weather Service, NOAA's scientific integrity policies, and historical controversies around weather communication. Understanding how probabilistic forecasts differ from deterministic maps can improve how you interpret future storm information and public reactions to it. These subjects are covered in official guidance, meteorological training materials, and post-event analyses from nonpartisan scientific organizations.