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Tropical Storm Debby St. Mary’s Flood

Tropical Storm Debby St. Mary’s Flood. Presented by Joel L anier Senior Service Hydrologist 27 Sep 2012. Weatherfolk. Debby flooding. Live Oak, Fl. Gainesville.com http:// www.gainesville.com/article/20120626/ARTICLES/120629655 . St. Mary’s Flooding. St. Mary’s Circle. Sat 23 June.

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Tropical Storm Debby St. Mary’s Flood

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  1. Tropical Storm Debby St. Mary’s Flood Presented by Joel Lanier Senior Service Hydrologist 27 Sep 2012 Weatherfolk

  2. Debby flooding Live Oak, Fl Gainesville.com http://www.gainesville.com/article/20120626/ARTICLES/120629655

  3. St. Mary’s Flooding St. Mary’s Circle

  4. Sat 23 June

  5. Sun 24 June

  6. Mon 25 June

  7. Tue 26 June

  8. Wed 27 June

  9. Tropical Storm Debby

  10. Tropical Storm Debby

  11. Tropical Storm Debby

  12. Tropoical Storm Debby

  13. Tropical Storm Debby

  14. Tropical Storm Debby • Upper Level Low in SW Gulf of Mexico • 21 Jun – Sfc Low Developed near Yucatan • 23 Jun – Sfc Low moved into Gulf of Mexico Becomes TS Debby • 23 Jun – Heavy rain N Tampa • 24 Jun – Coastal Trof Develops Heavy rain E Florida Panhandle • 25 Jun – Cold Front Enhances Coastal Trof Heavy rain NE Florida

  15. Tropical Storm Debby Sat 23 June

  16. Tropical Storm Debby Sun 24 June

  17. Tropical Storm Debby Mon 25 June

  18. Tropical Storm Debby Tue 26 June

  19. Tropical Storm Debby Wed 27 June

  20. Tropical Storm Debby - Trof EarthSky -http://earthsky.org/earth/tropical-storm-debby-a-dangerous-slow-mover

  21. Tropical Storm Debby Loop NOAA NWS HPC

  22. Tropical Storm Debby 1hr Radar Rainfall Loop

  23. Tropical Storm Debby Storm Total

  24. Tropical Storm Debby Storm Total

  25. Tropical Storm DebbySt Mary’s • 39 Flood Warnings and Statements Issued for St. Mary’s River at MacClenny • Above Flood Stage 26 Jun 06Z - 9 Jul 21Z • Record Crest 24.40ft 28 Jun 07:30Z • Record Flow 36,300 CFS

  26. St. Mary’s Crest History

  27. St. Mary’s Crest History 26,000 CFS 36,300 CFS 28,000 CFS 28,100 CFS

  28. North Prong Moniac - Flow

  29. MacClenny - Flow

  30. Kingsland - Flow

  31. North Prong Moniac - Stage

  32. MacClenny - Stage

  33. Kingsland - Stage

  34. Kingsland - Stream Velocity

  35. Kingsland - Rain

  36. Tropical Storm Debby WFO Jax Operations • 23 Jun – Began Webinar & Video Briefings • 27 Jun – WFO Tallahassee Notifies WFO Jax of Historic Flood Developing on lower St. Mary’s • 27 Jun – WFO Jacksonville Coordinates the Issuance of a River Flood Emergency Flood Warning for the entire length of the St. Mary’s River below MacClenny.

  37. National Weather Service Southeast River Forecast Center Daily Operational Overview Message 1:40 p.m. June 27, 2012 There are 18 communities currently in flood, including 8 in major flood. Moderate or Major Flooding Occurring or Expected Macclenny– St. Marys River (MAJOR)

  38. Tropical Storm Debby WFO Jax Operations • 23 Jun – Began Webinar & Video Briefings • 27 Jun – WFO Tallahassee Notifies WFO Jax of Historic Flood Developing on lower St. Mary’s • 27 Jun – WFO Jacksonville Coordinates the Issuance of a River Flood Emergency Flood Warning for the entire length of the St. Mary’s River below MacClenny.

  39. 5 Day Storm Total 27 Jun 2012 12Z

  40. SR 40 Flood ThreatConnection to Satilla River

  41. SR 40 Flood Threat Connection to Satilla River

  42. River Flood Emergency • A HISTORIC FLOOD IS OCCURRING ON THE ST. MARYS RIVER DUE TO VERYHEAVY RAINFALL FROM TROPICAL STORM DEBBY. RAPID RISES ALONG THE ST.MARYS RIVER AND ITS TRIBUTARIES ARE EXPECTED WITHIN THE NEXT 24HOURS...AND THESE FLOOD WATERS WILL AFFECT RESIDENTS ALONG THE RIVERBASIN IN NASSAU...BAKER...CHARLTON AND CAMDEN COUNTIES.  • AREAS THAT DO NOT NORMALLY FLOOD ALONG THE ST. MARYS RIVER WILLFLOOD ANYWHERE ALONG THE LENGTH OF THE RIVER. EXTREME FLOODING MAYOCCUR AT FLEA HILL AND KINGS FERRY WITHIN THE NEXT 24 HOURS TO 36HOURS. OVERLAND FLOODING WILL EXTEND TO AND CONNECT WITH THE SATILLARIVER TO THE NORTH ALONG AND WEST OF THE STATE ROAD 110 IN GEORGIAEAST OF FOLKSTON.

  43. Hydrology Overview

  44. St. Mary’s to Nassau River

  45. Nassau River Connection?Brady Branch

  46. Brady Branch nr Bryceville, FL

  47. Brady Branch -> Thomas Creek

  48. Thomas Creek -> Nassau Village

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