How could NOAA's sea level rise predictions affect the National Weather Service?
National Weather Service may need to adjust models due to rising coastal flood risks NOAA predicts that high-tide flooding will become significantly more common in coastal Virginia, with Sewells Point in Norfolk expected to see 23 to 27 days of flooding this year, potentially rising to 85 to 125 days by 2050. This increased frequency and severity of tidal flooding, combined with data showing current models underpredicting flooding extent due to factors like hydrophytic vegetation, suggests that the National Weather Service may need to adjust its forecasting models and issue more frequent or severe flood warnings.
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How it reaches National Weather Service
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NOAA predicts that high-tide flooding will become more common in coastal communities as sea levels continue to rise in Virginia. At Sewells Point in Norfolk, 23 to 27 days of high-tide flooding are expected this year, but this could rise to 85 to 125 days in a single year by 2050. The predictions highlight the growing impact of tides and winds on coastal areas.
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Data collected through tidal surveys has pointed to weaknesses in existing flood models, specifically regarding hydrophytic vegetation, which has caused the extent of flooding to be underpredicted in areas like Norfolk. This necessitates that forecasting agencies, including the National Weather Service, adjust their models to accurately predict flood times, locations, and water levels.
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U.S. forecasting agency of the National Oceanic and Atmospheric Administration
Everything about National Weather Service
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The facts so far
As reported. Each one links to where it comes from.
- At Sewells Point in Norfolk, 23 to 27 days of high-tide flooding are expected this year.pilotonline.com
- By 2050, high-tide flooding in Sewells Point could see 85 to 125 days in a single year.pilotonline.com
- Data has pointed to two weaknesses in flood models, including hydrophytic vegetation.pilotonline.com
- The data collected is shared with local governments and regional planners.pilotonline.com
Why it matters
For the National Weather Service, the increasing certainty of severe coastal flooding represents a major operational challenge. The agency must ensure its warnings and forecasts accurately reflect the growing risk, which requires significant investment in updating complex hydrological and meteorological models to account for factors like sea level rise and vegetation changes.
This issue is part of a global trend where coastal communities are struggling with decision-making regarding sea level rise. Scientists note that many key decision-makers worldwide feel paralyzed because it is difficult to commit significant effort and funds when the precise timing and extent of profound impacts are unknown.
What we don't know yet
- What specific changes are being implemented in the National Weather Service's coastal flood forecasting models?
- How will the increased frequency of high-tide flooding impact the operational budget of the National Weather Service?
What would change this answer
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Who else could feel it
Other possible ripples from the same event.
- Naval Air Systems CommandPossibleNaval Air Systems Command may face increased infrastructure costs from rising sea levels
- Abigail SpanbergerPossibleRising sea levels in Virginia may force the state to commit significant funds to coastal defense.
- Virginia General AssemblyPossibleThe Virginia General Assembly may face pressure to fund coastal defense and infrastructure.
- Virginia Department of Environmental QualityPossibleThe Virginia Department of Environmental Quality may face new mandates from rising sea levels.
Reporting
- pilotonline.comWednesday
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Brind's analysis is written by AI from the reporting linked above and can be wrong. This explainer is a possibility worth considering, not a forecast: steps marked as Brind's reasoning are not stated in the reporting. It is not investment advice; do your own research.