PowerPoint Presentation
Tropical Storm Debby St. Marys Flood
WeatherfolkPresented byJoel LanierSenior Service Hydrologist27 Sep 2012Debby flooding
Gainesville.com http://www.gainesville.com/article/20120626/ARTICLES/120629655 Live Oak, FlSt. Marys Flooding
St. Marys Circle
Sat 23 June
Sun 24 June
Mon 25 June
Tue 26 June
Wed 27 JuneTropical Storm Debby
Tropical Storm Debby
Tropical Storm Debby
Tropoical Storm Debby
Tropical Storm Debby
Tropical Storm DebbyUpper 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
Tropical Storm Debby
Sat 23 JuneTropical Storm Debby
Sun 24 JuneTropical Storm Debby
Mon 25 JuneTropical Storm Debby
Tue 26 JuneTropical Storm Debby
Wed 27 JuneTropical Storm Debby - Trof
EarthSky -http://earthsky.org/earth/tropical-storm-debby-a-dangerous-slow-mover Tropical Storm Debby Loop
NOAA NWS HPCTropical Storm Debby 1hr Radar Rainfall Loop
Tropical Storm Debby Storm Total
Tropical Storm Debby Storm Total
Tropical Storm DebbySt Marys39 Flood Warnings and Statements Issued for St. Marys River at MacClennyAbove Flood Stage 26 Jun 06Z - 9 Jul 21ZRecord Crest 24.40 ft 28 Jun 07:30ZRecord Flow 36,300 CFS
St. Marys Crest History
St. Marys Crest History26,000 CFS
36,300 CFS28,100 CFS28,000 CFSNorth Prong Moniac - Flow
MacClenny - Flow
Kingsland - Flow
North Prong Moniac - Stage
MacClenny - Stage
Kingsland - Stage
Kingsland - Stream Velocity
Kingsland - Rain
Tropical Storm Debby WFO Jax Operations23 Jun Began Webinar & Video Briefings 27 Jun WFO Tallahassee Notifies WFO Jax of Historic Flood Developing on lower St. Marys27 Jun WFO Jacksonville Coordinates the Issuance of a River Flood Emergency Flood Warning for the entire length of the St. Marys River below MacClenny.
National Weather ServiceSoutheast River Forecast CenterDaily Operational Overview Message1:40 p.m. June 27, 2012
There are 18 communities currently in flood, including 8 in major flood. Moderate or Major Flooding Occurring or ExpectedMacclenny St. Marys River (MAJOR)
Tropical Storm Debby WFO Jax Operations23 Jun Began Webinar & Video Briefings 27 Jun WFO Tallahassee Notifies WFO Jax of Historic Flood Developing on lower St. Marys27 Jun WFO Jacksonville Coordinates the Issuance of a River Flood Emergency Flood Warning for the entire length of the St. Marys River below MacClenny.5 Day Storm Total 27 Jun 2012 12Z
SR 40 Flood ThreatConnection to Satilla River
SR 40 Flood Threat Connection to Satilla River
River Flood EmergencyA 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.
Hydrology Overview
St. Marys to Nassau River
Nassau River Connection?Brady Branch
Brady Branch nr Bryceville, FL
Brady Branch -> Thomas Creek
Thomas Creek -> Nassau Village
Thomas Creek -> Nassau River
Possible Gage LocationsSR2 Bridge
Possible Gage Locations
Possible Gage LocationsSR1 Bridge
Questions?