A line of thunderstorms moved east across Seminole and Orange Counties. One storm within the line became severe and produced a microburst with peak winds of 76 mph measured at the Orlando-Sanford Airport.
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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 line of thunderstorms moved east across Seminole and Orange Counties. One storm within the line became severe and produced a microburst with peak winds of 76 mph measured at the Orlando-Sanford Airport.
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 Jul 27, 1:18 PM EST, 2 hours 10 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE MELBOURNE FL 218 PM EDT SAT JUL 27 2013 .DISCUSSION... CURRENTLY/TONIGHT...WEAK LOW PRESSURE IS GETTING ABSORBED INTO FRONTAL BOUNDARY OFFSHORE. A MORE DIFFUSE WEST COAST SEA BREEZE WILL CONTINUE TO GENERATE SHOWERS AND STORMS INTO THE AFTERNOON AS IT HEADS EAST WITH BEST COVERAGE EXPECTED WHERE EAST/WEST COAST SEA BREEZE BOUNDARIES COLLIDE. THIS LOOKS TO OCCUR FROM VOLUSIA COUNTY SOUTHWARD TO OKEECHOBEE COUNTY LATER THIS AFTERNOON. A WEAK WESTERLY STEERING FLOW WILL PUSH SOME OF THIS ACTIVITY THAT FORMS FROM THE COLLISION BACK TOWARD THE COAST. CONVECTION WILL DIMINISH INTO THIS EVENING WITH CLOUD COVER DECREASING OVERNIGHT. TEMPERATURES WILL FALL INTO THE LOW/MID 70S. SUNDAY...SHORTWAVE IN THE BASE OF LARGER U/L TROUGH OVER THE EASTERN CONUS WILL MOVE THROUGH NORTHERN FLORIDA TOMORROW WITH AXIS OF THE SUBTROPICAL RIDGE REMAINING SOUTH OF THE AREA. THIS WILL GENERATE A LIGHT WESTERLY FLOW WHICH WILL CONTINUE TO INCREASE MOISTURE OVER THE REGION. THIS HIGHER MOISTURE PLUS ADDED FORCING AND INCREASED INSTABILITY FROM THE PASSING SHORTWAVE WILL INCREASE RAIN CHANCES SLIGHTLY INTO TOMORROW UP TO 40-50 PERCENT WITH BEST RAIN CHANCES OVER THE INTERIOR AND NEAR THE VOLUSIA COAST WITH ANY BOUNDARY COLLISIONS. SHOULD CONTINUE TO SEE ENOUGH SUNSHINE EARLIER IN THE DAY FOR HIGHS TO REACH THE LOW 90S ACROSS THE INTERIOR WITH UPPER 80S/AROUND 90 DEGREES ALONG THE COAST. MON-FRI...(PREVIOUS DISCUSSION) UPPER LEVEL TROUGH LIFTS NORTH MON-TUE AND IS REPLACED BY UPPER LEVEL HIGH THAT STRETCHES ACROSS THE SOUTHEAST AND FLORIDA. THE AXIS OF THE HIGH PRESSURE RIDGE MEANDERS UP AND DOWN THE NORTH HALF OF THE PENINSULA RESULTING IN AN EXTENDED PERIOD OF ONSHORE FLOW. SAFE TO SAY THAT THE EAST COAST SEA BREEZE WILL FORM INDIAN RIVER TO MARTIN COUNTIES BY EARLY AFTERNOON AND PUSH INLAND THE FURTHEST OVER THE SOUTHERN AREA EACH DAY. SCATTERED...30 TO 40 POP...EACH AFTERNOON AND 20 POP EVENING. HIGHS UPPER 80S AT THE COAST DUE TO THE SEA BREEZE HINDERING MUCH DAYTIME WARMING PAST EARLY AFTERNOON TO THE LOWER 90S INLAND. && .AVIATION...BEST SHOWER AND STORM COVERAGE NOW LOOKS TO OCCUR FROM VOLUSIA COUNTY SOUTHWARD THROUGH OKEECHOBEE COUNTY WITH THE COLLISION BETWEEN OUTFLOW AND SEA BREEZE BOUNDARIES INTO LATE AFTERNOON. TEMPO IFR/MVFR CONDS WILL OCCUR WITH THIS ACTIVITY AS IT SHIFTS SLOWLY EASTWARD TOWARD THE COAST. CONVECTION WILL DIMINISH INTO THE EVENING WITH VFR CONDS GENERALLY EXPECTED OVERNIGHT. MAY SEE PATCHY IFR/MVFR FOG REDEVELOP BTW 10-13Z SUN MORNING. SLIGHTLY HIGHER MOISTURE AND INCREASED INSTABILITY WILL LEAD TO SCATTERED AFT SHOWERS AND STORMS AGAIN TOMORROW. && .MARINE... TONIGHT/SUN...A FEW SHOWERS/STORMS MAY BE ABLE TO PUSH OFFSHORE LATE AFT INTO EARLY EVENING OTHERWISE BEST RAIN CHANCES WILL EXIST OVER THE GULF STREAM WATERS OVERNIGHT. ONSHORE FLOW WILL BECOME S/SW INTO TONIGHT WITH WINDS INCREASING UP TO 10-15 KNOTS. ON SUNDAY WINDS NEAR THE COAST WILL BECOME E/SE AS EAST COAST SEA BREEZE DEVELOPS IN THE AFT AND MOVES INLAND. SEAS INCREASING TO 2-3 FEET. MON-WED...(PREVIOUS DISCUSSION) WINDS SHIFT TO THE SOUTHEAST MONDAY AFTERNOON AS A RESULT OF THE SURFACE RIDGE AXIS MOVING NORTHWARD UP THE PENINSULA. MODERATE SOUTHEAST WINDS CONTINUE TUESDAY THROUGH FRIDAY. THE WAVE WATCH MODEL CONTINUES TO FORECAST A SMALL BUT INCREASING LONG PERIOD SWELL STARTING LATE MONDAY AND LASTING THROUGH THURSDAY THEN DECREASING PERIODS STARTING FRIDAY. && .PRELIMINARY POINT TEMPS/POPS... DAB 73 91 73 91 / 20 40 20 30 MCO 73 93 74 93 / 20 50 20 30 MLB 73 89 74 90 / 20 30 20 30 VRB 72 89 74 90 / 20 30 20 30 LEE 75 93 75 94 / 20 50 20 30 SFB 75 93 75 94 / 20 50 20 30 ORL 75 93 76 94 / 20 50 20 30 FPR 72 88 73 89 / 20 30 20 30 && .MLB WATCHES/WARNINGS/ADVISORIES... FL...NONE. AM...NONE. && FORECAST/AVIATION...WEITLICH/BOWEN RADAR/IMPACT WX....PENDERGRAST
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE MELBOURNE FL 550 AM EDT SAT JUL 27 2013 AMZ550-552-555-570-572-575-FLZ041-044>047-053-054-058-059-064-141- 144-147-272200- 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- 550 AM EDT SAT JUL 27 2013 THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL FLORIDA. .DAY ONE...TODAY AND TONIGHT. .THUNDERSTORM IMPACT... A LIGHT WEST TO NORTHWESTERLY FLOW OVER CENTRAL FLORIDA WILL COMBINE WITH WEAK INSTABILITY TO ALLOW SCATTERED THUNDERSTORMS TO DEVELOP TODAY. THUNDERSTORMS WILL MOST NUMEROUS OVER THE INTERIOR ALONG AND EAST OF THE FLORIDA TURNPIKE THIS AFTERNOON AS THE EAST AND WEST COAST SEABREEZES COLLIDE. STORMS WILL PUSH BACK TOWARD THE COAST AROUND 10 MPH BUT MOST ARE EXPECTED TO DISSIPATE BEFORE THEY MOVE OFFSHORE. CLOUD TO GROUND LIGHTNING WILL BE THE PRIMARY THREAT FROM ANY STORMS THAT DEVELOP TODAY. WIND GUSTS BETWEEN 40 AND 50 MPH MAY OCCUR AS WELL. .MARINE THUNDERSTORM GUST IMPACT... SCATTERED SHOWERS AND THUNDERSTORMS WILL DEVELOP ACROSS THE AREA THIS AFTERNOON...MOVING EAST AROUND 10 KNOTS. SOME STORMS WILL BE CAPABLE OF PRODUCING GUSTS UP TO 45 KNOTS ACROSS INLAND LAKES. A FEW STORMS MAY PUSH OFFSHORE AS WELL...BUT MOST ARE EXPECTED TO DISSIPATE BEFORE DOING SO. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY. SCATTERED AFTERNOON AND EVENING LIGHTNING STORMS WILL OCCUR OVER CENTRAL FLORIDA THROUGH MOST OF NEXT WEEK. HIGH PRESSURE WILL BUILD OVER THE AREA BY EARLY NEXT WEEK...FOCUSING STORMS OVER THE INTERIOR. THE PRIMARY THREATS WILL BE FREQUENT LIGHTNING STRIKES...GUSTY WINDS AND HEAVY DOWNPOURS. RIP CURRENT THREATS WILL INCREASE BY THE MIDDLE OF NEXT WEEK AS WELL AS WINDS SHIFT TO THE SOUTHEAST AND PUSH A SMALL SWELL INTO THE LOCAL ATLANTIC. .SPOTTER INFORMATION STATEMENT... SPOTTERS ARE REQUESTED TO MONITOR THE WEATHER AND SELF ACTIVATE IF NEEDED. BRAGAW
The Melbourne radar (KMLB), 93 km away, was scanning. The volume nearest the first event began at 20:26 UTC.
1 thunderstorm wind. Local standard time, as filed.
The ASOS at Sanford-Orlando Airport (KSFB) measured peak winds from the south of 76 mph as a thunderstorm produced a severe microburst at the airport. Tower personnel reported a loaded luggage cart was blown over onto an active taxiway.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Florida in 2013Every state in 2013This day in weather historyWarnings in Florida, July 2013
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: 457145.