A strong thunderstorm toppled a tree and damaged a car and fence of a residence in a rural area along the Kissimmee River between Basinger and Okeechobee.
Every event with a place to put it. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS MLB wrote it up.
A strong thunderstorm toppled a tree and damaged a car and fence of a residence in a rural area along the Kissimmee River between Basinger and Okeechobee.
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 Aug 13, 3:20 PM EST, 2 hours 32 minutes earlier.
Area Forecast Discussion National Weather Service Melbourne FL 420 PM EDT Sun Aug 13 2017 .DISCUSSION... Early morning satellite imagery shows deep moisture continues to reside over central and north Florida. Subsidence from weak ridging in the mid and upper levels is allowing drier air to infiltrate from the south, namely over the Treasure Coast and Okeechobee County. Expect this to lead to a noticeable gradient in afternoon storm coverage across our 10-county area of responsibility. MOS guidance supports this line of thought with likely (60%) PoPs advertised from Titusville to Kissimmee north decreasing to (30%) over the Treasure Coast. Will not stray far from guidance. Morning showers along the west coast will press closer to Lake County after noon as the west coast sea breeze becomes established there. At the same time, isolated showers and storms are expected along our coast as the east coast boundary begins pushing inland. Coverage increases from there as continued light southwest gradient flow supports the greatest mid-late afternoon boundary collisions and interactions over our area. Boundary propagation and interactions will lead to chaotic storm motion at times, though some pushback toward the coast is expected, with better chances north of Sebastian Inlet where deeper moisture resides. Lightning and locally heavy rain remain the primary threats, and a few slow-moving storms are likely to produce 2 to 3 inches of rain within a 60 to 90-minute window. Some convection expected to linger past sunset as outflow boundaries continue to feed off lingering diurnal instability. This is especially true over Okeechobee and adjacent areas of the Treasure Coast counties where more leftover instability should reside. Monday-Friday...Weak mid level ridging overhead to start the week will strengthen Tuesday-Thursday, before a weak col starts to develop over the peninsula by late Friday as heights lower some especially in the ECM. The Atlantic surface ridge axis will reside south of Lake Okeechobee through Tuesday, then slowly lift northward over the southern third CWA, but the overall guidance trend is to keep it suppressed a little farther south than earlier runs. Net result is a continuation of the light SW to S flow pattern, light enough to allow ECSB development, but not allow for a deep inland push of the boundary. Climo POPs in the 40 to 50 percent range each day, with temps in the L90s over the coastal counties and near 95F inland. Next weekend...The mid/upper patterns of the GFS become disparate with the CMC sort of in between the two. The ECM develops a mid to upper low overhead in the col region, which slowly lifts out to the north by Sunday night, while the GFS restrengthens the ridge atop Florida, and the CMC keeps a weakness in the mid level height fields just east of Florida. A surface trough over the SE CONUS which will keep the surface ridge suppressed over the southern third of the state weakens, which allows the narrowing high pressure ridge axis to lift north into the central peninsula. POPs look to be a touch on the lower side of climo (30-40) with temps near normal. While there is a pretty robust signal in the operational models for a Cabo Verde type tropical cyclone to be moving WNW near of north of the Greater Antilles early next week (the day 8-10 time frame), it's important to note that global model solutions beyond days 5-7 will frequently show large changes in subsequent runs. There will be many days to watch and see if these solutions come anywhere close to fruition. Mid to late August is always a good time for Floridians to review their hurricane plans and make sure their kits are up to date. && .AVIATION...Another active afternoon anticipated with highest chances for SHRA/TSRA near and north of KTIX-KISM corridor. Isolated activity expected to develop after 18Z with greatest coverage between 19-23Z. Lower coverage forecast south of KMLB, though even here isolated to scattered activity is expected as the sea breeze moves inland this afternoon and a few storms over the interior push back toward the coast this evening. && .MARINE...Today-Tonight...Weak high pressure over south Florida will maintain a light to gentle southwest breeze through this morning before turning onshore as the sea breeze develops. Seas at or below 2 feet nearshore and 2-3 feet offshore. A chance for offshore moving thunderstorms again this afternoon, especially north of Sebastian Inlet. MOnday-Thursday...With the Atlantic ridge axis staying a little either side of the latitude of Lake Okeechobee through the period a light mainly offshore flow will keep seas 2FT or less near shore and 2-3FT at most offshore. As T.D. #8 lifts north well east of the Bahamas, we can expect some increase in the Rip Current threat as the system is liable to send some long period component into the local waters. && .PRELIMINARY POINT TEMPS/POPS... DAB 91 76 92 76 / 60 30 40 20 MCO 93 76 94 77 / 60 30 40 20 MLB 91 77 92 76 / 50 30 40 20 VRB 91 76 92 75 / 40 30 40 20 LEE 92 76 92 77 / 60 20 40 20 SFB 93 76 94 77 / 60 30 40 20 ORL 92 77 95 78 / 60 30 40 20 FPR 91 76 92 74 / 40 30 40 20 && .MLB WATCHES/WARNINGS/ADVISORIES... FL...None. AM...None. && SHORT TERM/AVIATION...Ulrich LONG TERM/IMPACT WX...Cristaldi
Hazardous Weather Outlook National Weather Service Melbourne FL 445 AM EDT Sun Aug 13 2017 AMZ550-552-555-570-572-575-FLZ041-044>047-053-054-058-059-064-141- 144-147-132045- 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- 444 AM EDT Sun Aug 13 2017 THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL FLORIDA. .DAY ONE...TODAY AND TONIGHT. .THUNDERSTORM IMPACT... Deep tropical moisture will produce another round of scattered to numerous afternoon showers and thunderstorms, with the greatest coverage expected across Brevard and Osceola counties and points to the north. The first lightning storms will develop early this afternoon along both the east and west coast sea breezes, with coverage increasing over inland areas as the boundaries begin to interact. A few storms should push back to the coast especially north of Sebastian Inlet. The main storm threats will be heavy rainfall and cloud to ground lightning strikes. .FLOOD IMPACT... Slow and erratic storm motion will bring a chance for heavy rain this afternoon. Isolated rainfall amounts of 2 to 3 inches in a short 60- to 90- minute window will lead to temporary water ponding on roadways and other poorly drained areas. .MARINE THUNDERSTORM GUST IMPACT... A few afternoon storms will be capable of producing brief wind gusts of 30 to 35 knots over inland lakes, the intracoastal waterway, and nearshore Atlantic waters. .RIP CURRENT IMPACT... Ocean conditions will produce a moderate rip current threat along area beaches. The threat will be highest from mid to late afternoon due to tidal effects. Check with beach patrol for local conditions before entering the water. Swim only at guarded beaches and never swim alone. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY. Afternoon lightning storms will remain in the forecast into next week. The main thunderstorm hazards will be frequent cloud to ground lightning, brief gusty winds, and locally heavy rain. Tropical Depression Eight will pass well to the east of the Florida Peninsula early next week. A long period swell from the system is expected to increase the rip current threat along area beaches. .SPOTTER INFORMATION STATEMENT... Spotter activation is not anticipated today; however, spotters are encouraged to report any rain amounts of 3 inches or greater. Ulrich
The Melbourne radar (KMLB), 91 km away, was scanning. The volume nearest the first event began at 22:50 UTC.
1 thunderstorm wind. Local standard time, as filed.
Okeechobee County Emergency Management forwarded a report and photos of damage at a residence in a rural area along the Kissimmee River between Basinger and Okeechobee. A tree was toppled and several large branches were downed, along with damage to a car and fence nearby.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Florida in 2017Every state in 2017This day in weather historyWarnings in Florida, August 2017
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: 717925.