Tornadoes in Florida, August 11, 2010

Name: Tornadoes in Florida, August 11, 2010
Start: 2010-08-11T11:05
End: 2010-08-11T15:05
Location: Florida

August 11, 2010 · NWS MLB · 2 events in 1 county or zone

Where it happened

Every event with a place to put it. Tap one for its entry below.

Tornadoes
Tropical storms and surge
Floods
Wind
Hail
Winter weather
Heat and drought
Cold
Fire, smoke and dust
Marine and coastal
Other

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The toll

Deaths: 0
Injuries: 0
Property damage: $5,000
Crop damage: None recorded
Events: 2

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.

What happened

The episode as NWS MLB wrote it up.

Scattered thunderstorms trained northward near the Florida east-central coast, within a strong southerly flow due in part to the presence of Tropical Depression Five remnants near the central Gulf coast. Around mid day, a waterspout developed over the intracoastal river and moved onshore the mainland in Edgewater, producing minor damage. Several hours later, another storm developed rotation and produced a brief touchdown in a wooded area, farther inland over southern Volusia County.

What forecasters said that day

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 11, 8:00 AM EST, 3 hours 5 minutes earlier.

Area forecast discussion, Aug 11, 8:00 AM EST, 3 hours 5 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MELBOURNE FL
900 AM EDT WED AUG 11 2010

.DISCUSSION...
TROPICAL DEPRESSION FIVE CURRENTLY 185 MILES SOUTH OF APALACHICOLA
AND TRACKING OFF TO THE NORTHWEST OVER THE EASTERN GULF AND AWAY
FROM THE FLORIDA PENINSULA THIS MORNING. EAST FLORIDA REMAINS UNDER
SOUTH-SOUTHEASTERLY FLOW BETWEEN TD 5 AND ATLANTIC RIDGE SLOWLY
SINKING SOUTHWARDS ACROSS GA/SC. A MOIST ENVIRONMENT REMAINS ON THE
PERIPHERY OF THE SYSTEM WITH SOUNDINGS ALONG THE EAST COAST OF THE
STATE AROUND 2.1"-2.2" THIS MORNING AND KTBW CLOSER TO TD 5 COMING
IN WITH ~2.5".

WE WILL SEE ACTIVITY DEVELOPING ALONG A DIFFUSE EAST COAST SEA
BREEZE BY LATE MORNING IN ADDITION TO A FEW OUTER RAINBANDS FROM TD
5 BRUSHING THE WESTERN COUNTIES (OSCEOLA-LAKE) THROUGH THE DAY.
HIGHEST PRECIP CHANCES WILL BE OVER THE INTERIOR WITH STEERING FLOW
BECOMING MORE SOUTHERLY DURING THE DAY. SHOWERS SHOULD BE THE MAIN
FORM OF CONVECTION TODAY SINCE ABOVE NORMAL TEMPS ALOFT (ONLY -3C TO
-4C THIS MORNING) WILL LIKELY KEEP THUNDERSTORM DEVELOPMENT ISOLATED.

MORE SUNSHINE IS EXPECTED TODAY ACROSS THE REGION WHICH WILL ALLOW
MAX TEMPS TO BE A FEW DEGREES HIGHER THAN YESTERDAY...REACHING
NORMAL VALUES IN THE LOW 90S.

ONLY MAJOR CHANGE FOR UPDATES THIS MORNING IS TO TWEAK CLOUD COVER
DOWNWARDS WITH MOSTLY SUNNY-PARTLY CLOUDY SKIES VISIBLE THIS MORNING
ON SATELLITE.

&&

.AVIATION...VFR CONDITIONS EXPECTED THROUGH LATE MORNING. SCT
SHRA/ISO TSRA BEGIN TO FORM BY LATE MORNING AND PERSISTING THROUGH
THE AFTERNOON. TEMPO IFR/MVFR CONDS CAN BE EXPECTED WITH ANY OF THIS
ACTIVITY. WINDS IN THE AFT WILL REMAIN OUT OF THE SE AROUND 10-15
KTS WITH GUSTS UP TO 15-20 KTS AT TIMES.

&&

.MARINE...
TODAY-TONIGHT...PRESSURE GRADIENT BTW TD #5 OVER THE EASTERN GULF
AND HIGH PRESSURE RIDGE EAST OF THE AREA WILL MAINTAIN A SE FLOW
OVER THE WATERS TODAY...THOUGH NOTABLY WEAKER THAN YESTERDAY AT
ONLY TO 10-15 KTS. WINDS TO VEER TO THE SOUTH INTO TONIGHT AT TD 5
PULLS FURTHER AWAY INTO THE NORTH CENTRAL GULF. SEAS CONTINUE TO
SUBSIDE AS PGRAD SLACKENS AT 3-4FT OFFSHORE...BECOMING 2-3 FT
TONIGHT.

FROM PREVIOUS DISCUSSION...
THU-WEEKEND...HIGH PRESSURE RIDGE AXIS WILL REMAIN SOUTH OF THE
WATERS. THIS WILL CAUSE A WEST/SOUTHWEST FLOW 10 KNOTS OR
LESS...EXCEPT ACROSS THE NORTH THU-FRI WHERE REMNANT TD #5 LOW
AND/OR WEAK FRONTAL TROUGH KEEP THE GRADIENT FLOW A LITTLE HIGHER.
THE MAIN CONCERN FOR BOATERS WILL BE AFTERNOON STORMS THAT MOVE
ACROSS THE COAST.

&&

.MLB WATCHES/WARNINGS/ADVISORIES...
FL...NONE.
AM...NONE.
&&

MOSES

Hazardous weather outlook, Aug 11, 9:52 AM EST, 1 hour 13 minutes before

HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE MELBOURNE FL
1052 AM EDT WED AUG 11 2010

AMZ550-552-555-570-572-575-FLZ041-044>047-053-054-058-059-064-141-
144-147-112000-
COASTAL WATERS FROM FLAGLER BEACH TO VOLUSIA BREVARD COUNTY LINE
OUT 20 NM-
COASTAL WATERS FROM VOLUSIA BREVARD COUNTY LINE TO SEBASTIAN
INLET OUT 20 NM-
COASTAL WATERS FROM SEBASTIAN INLET TO JUPITER INLET OUT 20 NM-
WATERS FROM FLAGLER BEACH TO VOLUSIA BREVARD COUNTY LINE 20 TO
60 NM OFFSHORE-
WATERS FROM VOLUSIA BREVARD COUNTY LINE TO SEBASTIAN INLET 20 TO
60 NM OFFSHORE-
WATERS FROM SEBASTIAN INLET TO JUPITER INLET 20 TO 60 NM OFFSHORE-
INLAND VOLUSIA-NORTHERN LAKE-ORANGE-SEMINOLE-SOUTHERN BREVARD-
OSCEOLA-INDIAN RIVER-OKEECHOBEE-ST. LUCIE-MARTIN-COASTAL VOLUSIA-
SOUTHERN LAKE-NORTHERN BREVARD-
1052 AM EDT WED AUG 11 2010

THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL FLORIDA.

.DAY ONE...TODAY AND TONIGHT.

...THUNDERSTORM IMPACT...
TROPICAL DEPRESSION NUMBER 5 CURRENTLY OVER THE EASTERN GULF OF
MEXICO WILL KEEP A MOIST SOUTH TO SOUTHEAST FLOW OVER THE AREA
THIS AFTERNOON. THIS WILL ALLOW FOR THE DEVELOPMENT OF SCATTERED
SHOWERS AND ISOLATED THUNDERSTORMS OVER EAST CENTRAL FLORIDA
THROUGH EARLY THIS EVENING. ANY CONVECTIVE ACTIVITY THAT DEVELOPS
WILL MOVE TOWARD THE NORTH TO NORTHWEST AT AROUND 25 MPH. MAIN
THREATS FROM STORMS WILL BE GUSTY WINDS OF UP TO 40 MPH...HEAVY
DOWNPOURS...AND DEADLY CLOUD TO GROUND LIGHTNING STRIKES.

...RIP CURRENT IMPACT...
WEATHER AND OCEAN CONDITIONS WILL KEEP AN ELEVATED RISK FOR RIP
CURRENTS ALONG THE AREA BEACHES TODAY. THE HIGHEST RIP RISK WILL
BE LATE THIS MORNING THROUGH EARLY THIS AFTERNOON WITH THE
OUTGOING TIDE. ONCE ARRIVING AT THE BEACH...CHECK WITH A
LIFEGUARD FOR THE CURRENT RIP CONDITIONS AND NEVER SWIM ALONE.

...MARINE THUNDERSTORM GUST IMPACT...
SCATTERED SHOWERS AND ISOLATED STORMS WILL DEVELOP ACROSS THE AREA
THIS AFTERNOON AND MOVE TOWARD THE NORTH TO NORTHWEST AROUND 25
MPH. ANY STRONGER ACTIVITY WILL BE ABLE TO PRODUCE WIND GUSTS IN
EXCESS OF 35 KNOTS OVER INLAND LAKES.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.
SURFACE ATLANTIC HIGH PRESSURE RIDGE WILL BUILD BACK OVER CENTRAL
AND SOUTHERN FLORIDA FROM LATE THIS WEEK INTO THE WEEKEND. THIS
WILL KEEP MORE NORMAL COVERAGE OF SHOWERS AND STORMS ACROSS THE
AREA EACH AFTERNOON. A DEVELOPING WESTERLY STEERING FLOW WILL
INCREASE THE THREAT FOR OFFSHORE MOVING THUNDERSTORMS INTO THE
WEEKEND.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY.

WEITLICH/JORDAN

The radar

The Melbourne radar (KMLB), 98 km away, was scanning. The volume nearest the first event began at 16:05 UTC.

Open the radar archive at this moment

Event by event

2 tornado. Local standard time, as filed.

Tornado, Volusia

When: August 11, 11:05 AM EST to 11:06 AM EST
Where: Volusia County, 0.83 mi SE of Edgewater to 0.61 mi SSE of Edgewater
Rating: EF0
Path length: 0.27 mi
Path width: 20 yd
Property damage: $5,000
Reported by: Fire Department/Rescue
Coordinates: 28.971, -80.891

A waterspout developed over the intracoastal waterway and moved onshore and inland for a short distance before dissipating as the circulation approached US Highway 1. The waterspout developed in association with an isolated, heavy shower that peaked in intensity near the time of the touchdown. The waterspout moved onshore the mainland as a very weak tornado and first impacted Cameron's Marina, where a small boat on a trailer was overturned, damaging an adjacent pickup truck. The weak tornado then continued moving inland on a northwest track, causing soffit damage to another residence and minor tree damage along the remainder of the path. The waterspout/tornado was observed and photographed by many individuals. Interestingly, a condensation funnel was not visible throughout its short life cycle, however, swirling water and debris were apparent and were lifted far aloft. See separate event for waterspout.

Tornado, Volusia

When: August 11, 3:05 PM EST
Where: Volusia County, 1.65 mi WSW of Glencoe
Rating: EF0
Path length: 0.05 mi
Path width: 20 yd
Reported by: Fire Department/Rescue
Coordinates: 29.009, -81.004

Volusia County EVAC Ambulance personnel reported a tornado touchdown in a heavily wooded area just west of Interstate 95 and south of State Road 44 in rural Volusia County to the west of New Smyrna Beach. The brief tornado touchdown occurred along the southwest edge of a cluster of strong thunderstorms which were training slowly northward.

What these are

Tornado: A violently rotating column of air in contact with the ground and extending from a thunderstorm, filed with its path, width and Fujita or Enhanced Fujita rating from the damage survey.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

Every storm in Florida in 2010 Every state in 2010 This day in weather history The tornado archive for Florida, 2010 Warnings in Florida, August 2010

Sources

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: 241190, 241226.