office of marine safety meteorology gregory d. salottolo
TRANSCRIPT
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Office of Marine Safety
MeteorologyMeteorology
Gregory D. Salottolo
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IntroductionIntroduction
• Doppler weather radar images from Sterling, VA (LWX), 1502 EST to 1620 EST
• Weather conditions at time and location of accident
• National Weather Service (NWS) products
• Identified Issues• NWS Service assessment Report• Summary
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LWX Weather Radar ImagesLWX Weather Radar Images
• Times 1502 EST – 1620 EST
• Images produced using McIDAS
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Weather ConditionsWeather Conditions
• Thunderstorms, rain showers, strong gusty winds
• Westerly winds gusting to 37 knots– Average sustained winds near 20
knots
• Maximum wind gusts near 41 knots at 1600 EST
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NWS ProductsNWS Products
• Small Craft Advisory in effect
• Special Marine Warning (SMW) was issued at 1605 EST
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Issues IdentifiedIssues Identified
• Thunderstorms and strong gusty wind conditions could have been identified as early as 1500 EST
• Terminal Doppler Weather Radar (TDWR) data and surface weather operation data not fully used or integrated
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NWS Service AssessmentNWS Service Assessment
• Following the Lady D accident the NWS initiated a review of their performance
• The report contained 11 recommendations in response to identified issues
• No further recommendations needed• 7 of 11 recommendations currently being
implemented
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SummarySummary
• Thunderstorms with strong gusty winds and rain showers moved through the accident area
• A SMW should have been issued at least 20 minutes prior to the accident
• Recommendations in the NWS Service Assessment report were responsive to the issues identified by staff
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