High surf associated with distant Hurricane Florence produced several days of high surf along the Florida east coast. Breaking surf peaked at 6-9 feet on September 13.
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The episode as NWS MLB wrote it up.
High surf associated with distant Hurricane Florence produced several days of high surf along the Florida east coast. Breaking surf peaked at 6-9 feet on September 13.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Melbourne, FL wrote its last area forecast discussion before the first event at Sep 9, 8:29 AM EST, 2 hours 31 minutes earlier.
Area Forecast Discussion National Weather Service Melbourne FL 929 AM EDT Sun Sep 9 2018 .UPDATE... ...Long Period Swells from Distant Tropical Storm Florence will Produce a High Risk of Rip Currents through Mid Week... Today...The axis of a weak high pressure ridge early this morning extended from near the Yucatan across Cuba to Andros Island. This was producing southwest low level flow across southern sections while northern sections were still quite light. The ridge is forecast to expand northward and by late day most of the area will have a deep southwest/west wind flow. Morning soundings continue very moist with precipitable water near 2 inches. 500mb temps are minus 7 to 7.5C and there is no capping inversion. Early morning satellite imagery shows mostly clear skies except for some stratus across the south interior, so solar insolation will have minimal disruption. The GFS shows that upper level low in the Gulf will move westward and leave some divergence aloft over the central peninsula during the late afternoon. The steering flow should allow for numerous boundary collisions shifting from the interior to the east side of the peninsula late in the day. Collectively, these parameters are expected to support likely PoPs for most of the area. The last several runs of the HRRR model have had rather low coverage, but it was behind in the convective evolution yesterday, when there was a healthy coverage over the interior. The local WRF looks more generous and reasonable in the coverage. Little change to the previous forecast. && .AVIATION...Expect local MVFR ceilings as cumulus form this morning then becoming VFR until scattered-numerous showers and storms develop this afternoon and extend into the evening hours. Both interior and coastal terminals should have a period with showers and storms nearby. The storms will produce brief IFR along with frequent lightning strikes. Convection is expected to dissipate or push offshore a little after 00z. && .MARINE... Today-Tonight...Morning conditions showed near calm winds except for a westerly wind 5-10 knots in the south. Seas ranged from near 2 feet at the coast to 3-4 feet well offshore, essentially all from a long period east swell. So conditions have been good for early boaters. However, a change to an outgoing tide will commence soon and when combined with the long period swell, conditions near inlets will become choppy until about mid afternoon. Also, there is a chance for storms that form over the mainland this afternoon and early evening to affect the intracoastal and nearshore Atlantic. && .MLB WATCHES/WARNINGS/ADVISORIES... FL...None. AM...None. && FORECASTS...Lascody IMPACT WX...Bragaw
Hazardous Weather Outlook National Weather Service Melbourne FL 1130 AM EDT Sun Sep 9 2018 AMZ550-552-555-570-572-575-FLZ041-044>047-053-054-058-059-064-141- 144-147-100330- Flagler Beach to Volusia-Brevard County Line 0-20 nm-Volusia- Brevard County Line to Sebastian Inlet 0-20 nm- Sebastian Inlet to Jupiter Inlet 0-20 nm-Flagler Beach to Volusia- Brevard County Line 20-60 nm-Volusia- Brevard County Line to Sebastian Inlet 20-60 nm- Sebastian Inlet to Jupiter Inlet 20-60 nm-Inland Volusia County- Northern Lake County-Orange-Seminole-Southern Brevard County- Osceola-Indian River-Okeechobee-St. Lucie-Martin- Coastal Volusia County-Southern Lake County- Northern Brevard County- 1130 AM EDT Sun Sep 9 2018 THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL FLORIDA. .DAY ONE...THIS AFTERNOON AND TONIGHT. .THUNDERSTORM IMPACT... Scattered to numerous showers and thunderstorms will develop across central Florida this afternoon. Storm motion will be to the east and northeast at 5 to 10 mph. The primary impacts from these storms will be frequent cloud-to-ground lightning strikes, wind gusts up to 45 mph, and moderate to heavy downpours. Remember that lightning can strike well beyond the audible range of thunder. Cease outdoor activities and move indoors if skies look threatening or if you hear thunder. .RIP CURRENT IMPACT... Long period swells will combine with a high astronomical tide to generate a high rip current risk along the beaches of east central Florida today. The threat will be highest through 5:00 PM this afternoon due to tidal effects. Check with your local beach patrol for additional information about ocean hazards. If you decide to swim, do so only within sight of a lifeguard and never swim alone. .FLOOD IMPACT... Scattered to numerous showers and thunderstorms will move to the northeast to east at 5 to 10 mph. This slow storm motion will allow some storms to produce very heavy rainfall that will cause some low lying and poor drainage areas to flood. Drivers should reduce speed when encountering standing water on roadways. .MARINE THUNDERSTORM GUST IMPACT... Gusty winds around 35 knots may occur in a few thunderstorms this afternoon, especially over the inland lakes and over the coastal waters. Boaters should be on the lookout for storms approaching from the west as storm motion will be toward the east at 5 to 10 knots. .RIVER FLOOD IMPACT... The Saint Johns River is currently in Action Stage above Lake Harney near Geneva and at Astor. River levels are forecast to remain steady through most of next week. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY. Isolated to scattered afternoon and evening thunderstorms are expected during the work week. The main storm threats will be cloud to ground lightning strikes, strong gusty winds, and moderate to heavy local downpours producing ponding of water on roadways and in other poorly drained areas. Tropical cyclone Florence is positioned well southeast of Bermuda and is forecast to become a major hurricane on Monday. Florence is forecast to approach the Carolinas Coast as a major hurricane late this week. Long period swells generated by Florence will impact the east Florida coast for most of the upcoming week. This will lead to increasingly hazardous surf conditions and erosion potential at area beaches. A high risk of life-threatening rip currents is expected to persist, with rough surf and large breaking waves by midweek. Local interests should continue to monitor forecasts of Florence from the National Hurricane Center. Now is the time to review your hurricane plan and restock your supply kit as we head into the peak of the Atlantic hurricane season. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be needed today. Bragaw
The national radar mosaic for the moment the first event began.
2 high surf. Local standard time, as filed.
Life guards rescued over a dozen people from the dangerous surf, primarily on Sunday, September 9.
Life guards rescued numerous people from the dangerous surf.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Florida in 2018Every state in 2018This day in weather historyWarnings in Florida, September 2018
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 773831, 773833.