A line of thunderstorms stretching from the Volusia County nearshore waters southwest across northern Brevard and eastern Orange counties, moved east and offshore. One embedded cell briefly produced severe wind gusts, which were measured at the Shuttle Landing Facility (KTTS).
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The episode as NWS MLB wrote it up.
A line of thunderstorms stretching from the Volusia County nearshore waters southwest across northern Brevard and eastern Orange counties, moved east and offshore. One embedded cell briefly produced severe wind gusts, which were measured at the Shuttle Landing Facility (KTTS).
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 2, 2:27 PM EST, 3 hours 36 minutes earlier.
Area Forecast Discussion National Weather Service Melbourne FL 327 PM EDT Thu Sep 2 2021 .DISCUSSION... Rest of Today-Tonight...Coverage of shower and lightning storm activity is beginning to increase across the area this afternoon, with scattered to numerous storms developing by late afternoon. The highest rain chances are along the coast (50-60%) with a bit lower rain chances over the far interior (40%). Storms will be capable of producing occasional to frequent lightning strikes, gusty winds up to 40 mph, and locally heavy rainfall. Expect most of the activity to push offshore by early evening, with a few lingering showers along the coast through sunset. Conditions will be mostly dry overnight as temps settle in the low to mid 70s. Friday...The weak frontal boundary across Central FL will remain in place for one additional day, leading to another active afternoon of numerous showers and lightning storms. Weak westerly steering flow will push storms toward the east and offshore, especially south of the Cape. Slow moving storms will also lead to an increased locally heavy rainfall threat into Friday afternoon/early evening, which could produce minor standing water issues across roadways and poor drainage areas. A few stronger storms will also be capable of frequent lightning strikes and gusty winds to 40-45 mph. Afternoon highs will be in the upper 80s to low 90s. Overnight lows will be in the low to mid 70s. Sat-Sun...(Previous Discussion) Weak low in the mid-upper levels breaks off from the previously mentioned trough and lingers across FL into this weekend, as frontal boundary fades. This feature will keep a somewhat unsettled pattern in place, with sufficient moisture for scattered showers and storms to form each afternoon developing along the sea breeze boundaries. Greatest storm coverage looks to be focused southeast of the I-4 corridor each afternoon, where greater moisture will reside. Highs will continue in the upper 80s to low 90s. Mon-Wed...(Previous Discussion) Low aloft lifts north into early next week and eventually gets absorbed by stronger trough extending southward across the eastern U.S. into mid to late week. Scattered showers and storms will continue to develop each afternoon, with rain chances around 40 to 50 percent. Low level winds look to remain rather weak even as they become more offshore toward mid- week, which should still allow the east coast sea breeze to move inland each day. However this may lead to a slower inland progression, with highs in the mid 90s possible across the interior toward mid- week with lows along the coast in the low 90s. && .AVIATION... Predominantly VFR conditions at the start of the TAF period. Scattered to numerous showers and thunderstorms impacting Treasure Coast terminals will push offshore over the next couple hours, with isolated showers and thunderstorms in the vicinity until this evening. Further north, showers and thunderstorms advancing eastward with the west coast sea breeze will impact terminals from KISM and KTIX northward later in the afternoon and early evening. Westerly flow remains too strong for the east coast sea breeze to move onshore, and without a sea breeze collision showers and storms will remain isolated to scattered in the vicinity of east-central florida terminals. VFR conditions prevail tonight, after convection clears in the late evening, and Friday morning. && .MARINE... Rest of Today-Tonight...Scattered showers and lightning storms will develop over the peninsula and move offshore across the local Atlantic waters into this evening. Storms will be capable of producing wind gusts up to 35 knots and occasional to frequent lightning strikes. Most activity should dissipate after sunset, with west winds around 10 knots overnight. Seas 2-3 feet. Fri-Mon...The frontal boundary across the area is expected to dissipate by the start of the weekend, with high pressure building into the area. This will result in more variable and lighter winds over the local waters. Winds generally out of the N/NE north of Sebastian Inlet through Saturday, with winds eventually becoming west by Monday. Seas 2-3 feet expected Friday, with 4 foot seas building in offshore into the weekend. Scattered showers and storms possible in the morning and early afternoon, before storms shift inland late in the day. && .PRELIMINARY POINT TEMPS/POPS... DAB 74 89 75 88 / 50 50 20 40 MCO 75 92 74 92 / 30 60 20 50 MLB 74 89 74 88 / 30 60 20 50 VRB 73 91 73 90 / 20 60 30 50 LEE 75 91 75 92 / 30 60 10 40 SFB 74 90 74 90 / 40 60 20 40 ORL 75 91 74 90 / 40 60 20 50 FPR 72 90 72 89 / 20 60 30 50 && .MLB WATCHES/WARNINGS/ADVISORIES... FL...None. AM...None. && Rodriguez/Combs/Haley
Hazardous Weather Outlook National Weather Service Melbourne FL 1006 AM EDT Thu Sep 2 2021 AMZ550-552-555-570-572-575-FLZ041-044>047-053-054-058-059-064-141- 144-147-022100- 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- Northern Lake-Orange-Seminole-Southern Brevard-Osceola- Indian River-Okeechobee-St. Lucie-Martin-Coastal Volusia- Southern Lake-Northern Brevard- 1006 AM EDT Thu Sep 2 2021 THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL FLORIDA. .DAY ONE...TODAY AND TONIGHT. .THUNDERSTORM IMPACT... Scattered showers and lightning storms will develop this afternoon across east-central Florida. The primary threats will be cloud to ground lightning strikes, gusty winds up to 40 mph, and heavy rainfall. .FLOOD IMPACT... Periods of locally heavy rainfall are possible today. Rainfall accumulations of 1 to 2 inches are possible in a few areas which may cause temporary flooding of low lying and poor drainage areas. .RIP CURRENT IMPACT... There is a moderate risk of rip currents at all Central Florida Atlantic beaches. Always swim within sight of a life guard, and never enter the surf alone. .MARINE THUNDERSTORM GUST IMPACT... Scattered lightning storms will move toward the east at around 15 knots today. These storms could produce wind gusts near 35 knots over some inland lakes and portions of the intracoastal, and nearshore Atlantic waters through early evening. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY. High chance of showers and lightning storms is expected on Friday. Then, a more typical wet season pattern is forecast to return this holiday weekend. Frequent lightning, gusty winds and minor flooding from torrential downpours will be possible with stronger storms. The threat for rip currents is expected to be at least moderate through Friday. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be needed today and tonight. Kelly/Rodriguez
Special Weather Statement
National Weather Service Melbourne FL
624 PM EDT Thu Sep 2 2021
FLZ041-045-046-147-022315-
Northern Brevard County FL-Orange FL-Seminole FL-Inland Volusia FL-
624 PM EDT Thu Sep 2 2021
...A strong thunderstorm will impact portions of southeastern
Seminole, northeastern Orange and northern Brevard Counties through
715 PM EDT...
At 622 PM EDT, Doppler radar was tracking a strong thunderstorm near
Chuluota, moving east at 20 to 25 mph.
HAZARD...Wind gusts up to 50 mph and pea size hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor damage to outdoor objects is
possible.
Locations impacted include...
Bithlo, Christmas, Chuluota and Titusville.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
Torrential rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.
Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.
&&
LAT...LON 2847 8074 2853 8113 2871 8112 2874 8072
TIME...MOT...LOC 2222Z 273DEG 21KT 2862 8104
MAX HAIL SIZE...0.25 IN
MAX WIND GUST...50 MPH
CristaldiThe Melbourne radar (KMLB), 56 km away, was scanning. The volume nearest the first event began at 23:04 UTC.
1 thunderstorm wind. Local standard time, as filed.
A wind gust of 58 mph from the west was recorded at the NASA Shuttle Landing Facility (KTTS).
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Florida in 2021Every state in 2021This day in weather historyWarnings in Florida, September 2021
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: 972588.