snapshot1_chasing_the_winds-e8054c06c4476e38.pdf

This IAI fact sheet analyzes the failure of hurricane track predictions for Hurricane John in 2006, which caused deaths and flooding in Baja California, Mexico. The failure is attributed to a lack of upper air sounding data and model divergence. The document advocates for increased transnational collaboration and adherence to WMO standards for weather balloon soundings to improve future forecasting.

• Hurricane John, which passed through the region between August 30 and September 4, 2006, caused five deaths in mountain villages and affected the state capital La Paz due to flash-floods and heavy rains. Forecasts from the National Hurricane Center (NHC) issued 72, 48, and 24 hours before landfall failed to predict the actual trajectory, which saw the hurricane make landfall at the southern tip of Baja California and move through the length of the peninsula.
• Predictive failures regarding Hurricane John included a forecast at 9am on 30th August that predicted no landfall, and subsequent models that misplaced the track or predicted only limited impact. Additionally, satellite images underestimated rainfall, predicting 50-150 mm while some stations recorded over 440 mm.
• Analysis by an IAI project, including research by Dr. Graciela Binimelis de Raga and her team at the Universidad Nacional Autónoma de México (UNAM), attributes the forecasting errors to a critical lack of airborne atmospheric measurements and a divergence of results between different models.
• To improve the reliability of track and intensity forecasts for tropical cyclones, the document recommends strengthening transnational collaboration between weather services and ensuring weather balloon data collection occurs at regular intervals to meet the World Meteorological Organization (WMO) requirement of at least four air soundings per day.

APA

Inter-American Institute for Global Change Research (n.d.). snapshot1_chasing_the_winds-e8054c06c4476e38.pdf. https://iai.int/admin/site/sites/default/files/uploads/2014/06/Snapshot1_Chasing_the_winds.pdf

Chicago

Inter-American Institute for Global Change Research. snapshot1_chasing_the_winds-e8054c06c4476e38.pdf. n.d. https://iai.int/admin/site/sites/default/files/uploads/2014/06/Snapshot1_Chasing_the_winds.pdf.

Wikipedia

{{cite report |author=Inter-American Institute for Global Change Research |title=snapshot1_chasing_the_winds-e8054c06c4476e38.pdf |url=https://iai.int/admin/site/sites/default/files/uploads/2014/06/Snapshot1_Chasing_the_winds.pdf |access-date=17 August 2026 |via=Climate Insights Directory}}

BibTeX

@techreport{interamericaninstituteforglobalchangeresearchndsnapshot1chasingthewindse8054c06c4476e38pdf, author = {{Inter-American Institute for Global Change Research}}, title = {{snapshot1\_chasing\_the\_winds-e8054c06c4476e38.pdf}}, institution = {Inter-American Institute for Global Change Research}, url = {https://iai.int/admin/site/sites/default/files/uploads/2014/06/Snapshot1_Chasing_the_winds.pdf}, urldate = {2026-08-17}, note = {Indexed by Climate Insights Directory} }