A thunderstorm briefly became severe and produced damaging winds, affecting a small area in St. Cloud.
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 thunderstorm briefly became severe and produced damaging winds, affecting a small area in St. Cloud. Another strong storm west of Vero Beach produced an outflow boundary which intersected a newly developing cell, resulting in funnel cloud and brief tornado (landspout) touchdown.
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 Jun 18, 8:28 AM EST, 4 hours 47 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE MELBOURNE FL 928 AM EDT FRI JUN 18 2010 .DISCUSSION... ...SCATTERED-NUMEROUS STRONG STORMS WITH FREQUENT-EXCESSIVE LIGHTNING AGAIN THIS AFTERNOON... TODAY...WATER VAPOR IMAGERY CONTINUES TO SHOW A MOISTURE DISCONTINUITY ALOFT ORIENTED NORTHEAST/SOUTHWEST FROM OFFSHORE CANAVERAL TO LAKE OKEECHOBEE. THIS BOUNDARY...WHICH HAS DICTATED WHERE THE INITIAL DEVELOPMENT OF CONVECTION HAS OCCURRED THE LAST TWO DAYS...HAS PUSHED SLIGHTLY TO THE EAST DURING THE PAST 24 HOURS. THIS IS REFLECTED IN THE CANAVERAL SOUNDING WHICH SHOWS HIGHER PRECIPITABLE WATER VALUES (ALMOST 2 INCHES). ALSO NOTABLE ON THE TAMPA AND CANAVERAL SOUNDINGS IS THAT THE 700MB TEMP HAS COOLED. SO EVEN THOUGH 500MB TEMPS HAVE NUDGED UP TO MINUS 7 DEGREES...THERE WILL BE LESS CONVECTIVE INHIBITION. SOUTHWEST FLOW SHOULD DELAY THE ONSET OF THE SEA BREEZE ONCE AGAIN AND EXPECT STORMS ALONG IT TO FIRE EARLY ENOUGH SO THAT COASTAL SECTIONS WILL HAVE SCATTERED COVERAGE...ESPECIALLY FROM BREVARD NORTHWARD. THE TREASURE COAST LOOKS MORE DELAYED AS THE RIBBON OF DRIER AIR ALOFT LINGERS THERE. THE SOUNDINGS AND CANAVERAL PROFILER SHOW SURFACE TO AT LEAST 600MB OF WESTERLY FLOW (ALBEIT WEAK)...SO SOME OF THE STRONG STORMS OVER INTERIOR SECTIONS WILL BE ABLE TO MOVE/PROPAGATE BACK ACROSS THE COAST ONCE AGAIN. RUC ANALYSIS SHOWS A WEAK VORT MAX NEAR NORTHERN SECTIONS AND SATELLITE PLACES IT ACROSS NORTH VOLUSIA. SURFACE OBSERVATIONS INDICATED CONSIDERABLE ALTOCUMULUS...WHICH IS USUALLY A WET SEASON PRECURSOR FOR ACTIVE CONVECTION. EXPECT SOME STORMS TO PRODUCE EXCESSIVE LIGHTNING ONCE AGAIN THIS AFTERNOON...ALONG WITH 50-60 MPH WIND GUSTS AND SMALL HAIL. SLOWER MOVING STRONG STORMS WILL ALSO PRODUCE 2-4 INCH RAINFALL AMOUNTS. ALL OF THIS SAID...THE CURRENT FORECAST LOOKS GOOD AND PLANNING NO CHANGES. && .AVIATION...EXPECT STORMS TO INITIATE ALONG THE WEST COAST SEA BREEZE AND MOVE/PROPAGATE TOWARDS INTERIOR TERMINALS EARLY-MID AFTERNOON. ADDITIONALLY...THE EAST COAST SEA BREEZE SHOULD BECOME ACTIVE EARLIER TODAY...ESPECIALLY FROM CANAVERAL NORTH. THIS MAY PUSH A BOUNDARY INLAND FAR ENOUGH TO INTERACT WITH WEST COAST BOUNDARY NEAR THE I-4 CORRIDOR. STRONG STORMS WILL OCCUR AND PRODUCE FREQUENT TO EXCESSIVE LIGHTNING ALONG WITH WIND GUSTS 35-45 KNOTS. SUCH CONDITIONS MAY AFFECT GROUND OPERATIONS AT SOME TERMINALS. && .MARINE... TODAY...(PREVIOUS DISCUSSION) THE SURFACE RIDGE ACROSS SOUTH FLORIDA WILL PRODUCE A 5-10 KNOT SOUTHWEST FLOW...TURNING ONSHORE IN A 10-12 KNOT E/SE SEA BREEZE. SOME STORMS MAY AFFECT THE INTRACOASTAL WATERS THIS AFTERNOON INTO EARLY EVE...ESPECIALLY NORTH OF SEBASTIAN INLET. && .MLB WATCHES/WARNINGS/ADVISORIES... FL...NONE. AM...NONE. && SHORT TERM...LASCODY LONG TERM....WIMMER
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE MELBOURNE FL 555 AM EDT FRI JUN 18 2010 AMZ550-552-555-570-572-575-FLZ041-044>047-053-054-058-059-064-141- 144-147-182200- 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- 555 AM EDT FRI JUN 18 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL FLORIDA. .DAY ONE...TODAY AND TONIGHT. ...THUNDERSTORM IMPACT... DAYTIME HEATING OF A MOIST AIR MASS WILL LEAD TO SCATTERED TO NUMEROUS LIGHTNING STORMS THIS AFTERNOON. THE PRIMARY FOCUS WILL BE THE EAST AND WEST COAST SEA BREEZE BOUNDARIES...WITH THE HIGHEST STORM COVERAGE OCCURRING ACROSS THE INTERIOR. HOWEVER... COASTAL SECTIONS WILL HAVE A CHANCE FOR STORMS ALONG THE SLOWLY INLAND MOVING SEA BREEZE WITH SOME ACTIVITY PUSHING BACK TOWARD THE COAST LATE IN THE DAY. THE PRIMARY HAZARD WILL BE FREQUENT TO EXCESSIVE LIGHTNING STRIKES. THOUGH THERE HAVE BEEN NO REPORTS OF PEOPLE BEING STRUCK BY LIGHTNING THE PAST FEW DAYS...SEVERAL STRUCTURAL FIRES HAVE BEEN CAUSED BY LIGHTNING. A FEW STORMS MAY ALSO PRODUCE 50-60 MPH WINDS AND SMALL HAIL. YOU SHOULD MOVE INDOORS AT THE FIRST SIGN OF A DEVELOPING STORM IN YOUR VICINITY. ...FLOOD IMPACT... WEAK WINDS THROUGH THE ATMOSPHERE WILL LEAD TO VERY SLOW STORM MOTION. LOCALIZED RAINFALL AMOUNTS OF 2 TO 4 INCHES ARE EXPECTED AGAIN THIS AFTERNOON...CAUSING PONDING OF WATER ON ROADWAYS AND MINOR FLOODING. ...EXCESSIVE HEAT IMPACT... AFTERNOON TEMPERATURES IN THE LOWER TO MID 90S COMBINED WITH TYPICAL FLORIDA SUMMERTIME HUMIDITY VALUES WILL PRODUCE HEAT INDEX READINGS OF 100 TO 104...BEFORE SOME COOLING OCCURS FROM THUNDERSTORMS OR ASSOCIATED CLOUD COVER. THOSE WITH OUTDOOR ACTIVITIES SHOULD BE ALERT FOR SIGNS OF HEAT STRESS AND REMEMBER TO DRINK PLENTY OF WATER. ...MARINE THUNDERSTORM GUST IMPACT... SCATTERED STORMS WITH FREQUENT TO EXCESSIVE LIGHTNING AND STRONG OUTFLOW WINDS WILL OCCUR ACROSS EAST CENTRAL FLORIDA THIS AFTERNOON. THE GREATEST COVERAGE SHOULD BE INLAND FROM THE COAST BUT A FEW STORMS MAY PUSH OFFSHORE LATE IN THE DAY. IF YOU GO BOATING DURING THE FLORIDA WET SEASON...IT IS USUALLY A GOOD IDEA TO WRAP THINGS UP AROUND MIDDAY...UNLESS YOU ARE PREPARED TO AVOID OR RIDE OUT A STRONG STORM. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY. TEMPERATURES WILL REMAIN NEAR NORMAL THROUGH THE EXTENDED AS A WEAK UPPER LEVEL TROUGH OVER THE REGION GIVES WAY TO DEEP EASTERLY FLOW ACROSS THE PENINSULA EARLY NEXT WEEK. SCATTERED AFTERNOON LIGHTNING STORMS CAN BE EXPECTED EACH DAY WITH THE MAIN HAZARD BEING DANGEROUS LIGHTNING STRIKES. THE POSSIBILITY FOR ONSHORE MOVING NIGHTTIME AND EARLY MORNING SHOWERS AND STORMS WILL INCREASE EARLY NEXT WEEK. .SPOTTER INFORMATION STATEMENT... SPOTTERS ARE REQUESTED TO MONITOR THE WEATHER AND SELF ACTIVATE IF NEEDED. KELLY
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
115 PM EDT FRI JUN 18 2010
FLZ045-144-181815-
ORANGE-SOUTHERN LAKE COUNTY-
115 PM EDT FRI JUN 18 2010
...A SIGNIFICANT WEATHER ADVISORY IS IN EFFECT FOR STRONG WIND GUSTS
BETWEEN 45 AND 55 MPH AND SMALL HAIL OVER SOUTHERN LAKE COUNTY...
WESTERN ORANGE COUNTY...
* UNTIL 215 PM EDT.
AT 110 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STORMS CAPABLE OF PRODUCING STRONG WINDS AND SMALL HAIL OVER
SOUTHERN LAKE COUNTY NEAR CLERMONT ...MOVING EAST AT 10 MPH.
LOCATIONS IN THE PATH OF THE STORM WHICH MAY EXPERIENCE STRONG WINDS
AND SMALL HAIL INCLUDE BAY HILL...DOCTOR PHILLIPS...UNIVERSAL STUDIOS
AND THE THEME PARKS IN SOUTHWEST ORANGE COUNTY INCLUDING WET N WILD
WATER PARK.
THE PRIMARY THREAT WILL BE CLOUD TO GROUND LIGHTNING STRIKES AND
GUSTY WINDS OF 45 TO 55 MPH...WHICH CAN CAUSE UNSECURED OBJECTS TO
BLOW AROUND...SNAP TREE LIMBS OR CAUSE POWER OUTAGES. HEAVY RAINFALL
WILL TEMPORARILY REDUCE VISIBILITY. SEEK SHELTER INDOORS UNTIL THE
STORM PASSES.
TORRENTIAL RAINFALL CAN BE EXPECTED...CAUSING TEMPORARY PONDING ON
SOME ROADS AND MINOR FLOODING OF POOR DRAINAGE AREAS. MOTORISTS
SHOULD SLOW DOWN IN HEAVY RAINFALL TO REDUCE THE RISK OF HYDROPLANING
AND LEAVE SAFE DISTANCE BETWEEN OTHER VEHICLES.
LAT...LON 2878 8181 2878 8141 2872 8142 2870 8145
2864 8145 2864 8141 2834 8142 2835 8191
TIME...MOT...LOC 1713Z 286DEG 8KT 2850 8170
67The Melbourne radar (KMLB), 59 km away, was scanning. The volume nearest the first event began at 18:16 UTC.
1 thunderstorm wind, 1 tornado. Local standard time, as filed.
Two thunderstorms merged over St. Cloud and the resultant storm produced a locally damaging microburst. The microburst winds uprooted four trees with diameters of 17 to 24 inches, north of Highway 192 and east of Narcoossee Road. A shed was also damaged on the property.
A funnel cloud was reported near the intersection of Highway 60 and Interstate 95, west of Vero Beach by several individuals, including a County Sheriff, pilot, Vero Beach Weather Observer and the public. A storm chaser video-taped a brief tornado touchdown in association with the funnel cloud. Radar imagery indicated that the tornado was a landspout which formed as an outflow boundary from strong convection farther west intersected a newly developed storm to the east of the main convection. The tornado touched down in a rural area and no damage occurred.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Florida in 2010Every state in 2010This day in weather historyThe tornado archive for Florida, 2010Warnings in Florida, June 2010
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: 227071, 227727.