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Forecast review 11/6/12

Forecast review 11/6/12. Mike DiDomizio Jordan Root Billy Clark. CHARLESTON, SOUTH CAROLINA. Charleston, SC… “The Holy City” Population :120,083(2010) ≈ 122,689(2011) Metro : 664,607 (2010) Density : 7,111 per sq mi Area : 134.2  sq  mi. 061800Z – 071200Z METAR Observations.

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Forecast review 11/6/12

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  1. Forecast review 11/6/12 Mike DiDomizio Jordan Root Billy Clark

  2. CHARLESTON, SOUTH CAROLINA Charleston, SC… “The Holy City” Population:120,083(2010) ≈122,689(2011) Metro: 664,607 (2010) Density: 7,111 per sq mi Area: 134.2 sq mi

  3. 061800Z – 071200Z METAR Observations

  4. 061800z surface analysis

  5. 300mb observation

  6. 21Z RADAR OBSERVATION

  7. 0Z Radar OBSERVATION

  8. 061800Z GFS

  9. Verifications

  10. Survey path

  11. Up Close and personal

  12. Career path

  13. Up Close and personal

  14. Lessons learned • Dry slots associated with low pressure systems consist of clearer skies that allow surface temperatures to quickly rise during the day. • Dry slots also coincide with no precipitation. • Daylight savings time recently ended, which means the sun sets at an earlier local time. Maximum heating occurs at an earlier time (i.e. 18Z and 19Z). • Clear skies and light winds at night allow temperatures to drop faster than models predict. • Dew points typically reach their maximum around dawn (i.e. 12Z).

  15. BLUEFIELD, WEST VIRGINIA Bluefield, WV… “Nature's air conditioned city, where the summer spends the winter." Population: 10,447 (2010) Metro: 107,342 (2010) Density: 1,311.3 per sq mi Area: 8.7 sq mi (all land)

  16. 061800Z – 071200Z METAR OBSERVATIONS

  17. 070900z surface analysis

  18. 070900Z Radar Observations

  19. Verifications

  20. Career path

  21. Up Close and personal

  22. LESSONS LEARNED • Clear skies and calm winds are ingredients for fall fog formation, but there needs to be recent precipitation and/or enough soil moisture. • Also, calm winds do not produce enough energy to lift winds upslope for fog to form. • Clear skies and calm winds will drop night temperatures below model output predictions. • Airport elevation is around 3000ft. Models can be misleading in mountainous terrain because the grid points may be in different elevations. • Mist does not always lead to low visibility and ceiling heights.

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