A funnel cloud was observed in association with a thunderstorm east of Indiantown.
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The episode as NWS MLB wrote it up.
A funnel cloud was observed in association with a thunderstorm east of Indiantown.
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 22, 2:02 PM EST, 1 hour 33 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE MELBOURNE FL 302 PM EDT SAT SEP 22 2012 .DISCUSSION... CURRENT-TONIGHT...GREATER MOISTURE VALUES SOUTHWARD WITH MID-LEVEL ENERGY MOVING ACROSS THE SOUTHERN PENINSULA RESPONSIBLE FOR HIGHER CELL COVERAGE OF SHOWERS/ISOLD STORMS HERE. NO REAL DISCERNIBLE EAST COAST SEA BREEZE BOUNDARY THUS FAR. WILL LIKELY GO WITH A PRE-FIRST PERIOD FOR THE ZONES KEEPING HIGHER POPS SOUTHWARD AS RADAR TRENDS HAVE SHOWN ALL DAY. HEAVY RAINFALL WITH MINOR NUISANCE FLOODING SEEMS TO BE THE MAIN THREAT THROUGH THE AFTERNOON AND EARLY EVENING. A WEAK COOL FRONTAL BOUNDARY WILL DROP SOUTHWARD OVERNIGHT INTO NORTH FLORIDA AND BEGIN TO PUSH DEEPER MOISTURE FURTHER SOUTHWARD INTO THE SOUTHERN PENINSULA. WINDS WILL FALL TO LIGHT AND VARIABLE TO NEAR CALM OVERNIGHT. OVERNIGHT LOWS MAINLY IN THE LOWER 70S. SUN-SUN NIGHT...THE AFOREMENTIONED FRONTAL BOUNDARY WILL CONTINUE TO PUSH SOUTHWARD ACROSS THE PENINSULA FORCING DEEPEST MOISTURE VALUES SOUTH OF LAKE OKEECHOBEE. WINDS WILL RESPOND EARLY IN THE PERIOD BY BECOMING NORTHWESTERLY...THEN EVENTUALLY NORTHERLY AND NORTH-NORTHEASTERLY THROUGH THE DAY. WILL ONLY CARRY A 20 PERCENT CHANCE FOR PRECIPITATION NORTH OF ORLANDO ON THIS DAY WITH 30 TO 40 PERCENT SOUTHWARD THROUGH OKEECHOBEE COUNTY AND THE TREASURE COAST. WITH DRIER CONDITIONS FINALLY MOVING IN EXPECT MORE IN THE WAY OF SUNSHINE THAN RECENT DAYS. AFTERNOON HIGHS SHOULD RECOVER INTO THE UPPER 80S ALL AREAS WITH SOME LOWER 90 DEGREE READINGS POSSIBLE OVER THE INTERIOR. MON-MON NIGHT...SLIGHTLY MODIFIED FROM PREVIOUS...MUCH DRIER MID LVL AIRMASS WILL PUSH INTO THE CENTRAL PENINSULA AS DEEP LYR N/NWRLY FLOW OVER THE DEEP SOUTH SHUNTS THE BULK OF THE MOISTURE BAND INTO S FL. GFS MODEL SOUNDINGS SHOW PWAT VALUES DROPPING BLO 1.5" ACRS CENTRAL FL...AND AS LOW AS 1.2" N OF THE I-4 CORRIDOR. AS THE POST FRONTAL RIDGE AXIS EXPANDS OVER THE DEEP S...SFC LOW LVL WINDS WILL VEER TO THE NE. THIS WILL LIMIT THE EXTENT OF THE DRY AIR ADVECTION AND MAY EVEN ALLOW SOME MOISTURE TO STALL AROUND THE LAKE OKEECHOBEE REGION. WILL KEEP A SLGT CHC OF PRECIP IN FOR MAINLY SHOWERS AND PERHAPS A RUMBLE OF THUNDER ACROSS THE TREASURE COAST AND OKEECHOBEE COUNTY. WHILE THE NE FLOW WILL DVLP TOO QUICKLY FOR ANY MEANINGFUL COLD AIR ADVECTION TO OCCUR...THE ONSHORE COMPONENT WILL KEEP MAX TEMPS LARGELY IN THE M/U80S...MIN TEMPS L70S INLAND...M70S ALONG THE COAST. ...PREVIOUS EXTENDED DISCUSSION... TUE-FRI...MID RANGE GUIDANCE IN REASONABLE AGREEMENT WITH THE BASIC WX PATTERN FOR THE UPCOMING WEEK. BOTH GFS/ECMWF MODELS REINFORCE THE POST FRONTAL RIDGE OVER THE DEEP SOUTH WITH A POLAR RIDGE CURRENTLY DROPPING OUT OF CNTRL CANADA. THIS RIDGE THEN PUSHES OFF THE ERN SEABOARD BUT TRAILS ITS WRN FLANK ACRS THE DEEP SOUTH THROUGH THE WEEK. THE RESULT IN A DEEP AND PERSISTENT E/NE FLOW PATTERN ACRS THE FL PENINSULA THAT WILL STEADILY MODIFY THE DRY AIRMASS. ECMWF IS MORE AGGRESSIVE WITH THE MOISTURE RETURN THAN THE GFS...BUT BOTH INCREASE POPS THRU THE WEEK WHICH IS CHARACTERISTIC OF A DEEP E TO NE FLOW PATTERN. MAX/MIN TEMPS NEAR OR SLIGHTLY ABV CLIMO. && .AVIATION...SCATTERED SHOWERS/STORMS REMAIN IN THE FORECAST INTO EARLY EVENING WITH HIGHER PROBABILITIES SOUTH OF KMCO WHERE DEEPER MOISTURE LIES. LIGHT NORTHEAST FLOW WILL FALL BELOW 5 KTS THIS EVENING BECOMING VARIABLE BY LATE EVENING AND PERHAPS CALM IN MANY LOCALES. A WEAK COOL FRONTAL BOUNDARY WILL DROP FROM NORTH FLORIDA INTO THE AREA PUSHING DEEPER MOISTURE BACK INTO SOUTH FL ON SUN. ISOLD TO WDLY SCT PRECIPITATION CHANCES WILL EXIST ON SUN WITH GREATEST CHANCES SOUTH OF KMCO. && .MARINE...TONIGHT-SUN...WEAK HIGH PRESSURE WILL BE NUDGED FURTHER INTO THE WESTERN ATLC AS A FRONTAL BOUNDARY DROPS INTO NORTH FLORIDA. NE WINDS INTO THIS EVENING WILL BECOME SW AFTER MIDNIGHT...THEN NW TOWARDS DAYBREAK. WINDS WILL CONTINUE TO VEER TO THE N/NNE DURING THE DAY ON SUN. SPEEDS INITIALLY BELOW 10 KTS WILL INCREASE TO 10-15 KTS ON SUN AS THE PGRAD TIGHTENS. SEAS 2-3 FT WITH 4 FT SEAS DEVELOPING WELL OFFSHORE ON SUN. WAVE PERIODS STILL 10-12 SECONDS. WIDESPREAD SHOWERS/ISOLATED STORMS...SOUTH OF THE CAPE INTO THIS EVENING. MOVEMENT MAINLY SOUTHWEST TOWARD THE NORTHEAST. NORTH OF HERE ISOLATED CONVECTION WILL DROP SOUTHWARD. MON-WED...SLIGHTLY MODIFIED FROM PREVIOUS...A LARGE POLAR AIRMASS WILL SPILL OUT OF CENTRAL CANADA AND BUILD ACRS THE ERN SEABOARD/DEEP SOUTH THRU THE MIDDLE OF NEXT WEEK. A GENTLY TO MODERATE NERLY SFC/BNDRY LYR BREEZE WILL RESULT WITH A STEADILY INCREASING THE FETCH LENGTH OVER THE WRN ATLC. THIS WILL PUSH A BUILDING E/NE SWELL INTO THE E FL COAST TO BEGIN THE WEEK. SEAS BUILDING TO 3-5FT MON...BUILDING TO 4-6FT MON OVERNIGHT WELL OFFSHORE WHERE THEY WILL REMAIN THRU MIDWEEK. && .PRELIMINARY POINT TEMPS/POPS... DAB 71 88 71 86 / 30 20 10 20 MCO 71 91 71 88 / 30 20 10 20 MLB 73 87 75 86 / 40 30 10 20 VRB 72 89 73 87 / 40 30 10 20 LEE 71 91 70 89 / 30 20 10 20 SFB 71 91 71 87 / 30 20 10 20 ORL 72 91 73 88 / 30 20 10 20 FPR 71 87 73 87 / 50 40 20 20 && .MLB WATCHES/WARNINGS/ADVISORIES... FL...NONE. AM...NONE. && SHORT TERM/AVIATION...SEDLOCK RADAR/IMPACT WEATHER....SHARP
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE MELBOURNE FL 1139 AM EDT SAT SEP 22 2012 AMZ550-552-555-570-572-575-FLZ041-044>047-053-054-058-059-064-141- 144-147-230345- 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- 1139 AM EDT SAT SEP 22 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL FLORIDA. .DAY ONE...THIS AFTERNOON AND TONIGHT. .THUNDERSTORM IMPACT... DEEP MOISTURE ASSOCIATED WITH A DISSIPATING FRONTAL BOUNDARY WILL COMBINE WITH DAYTIME HEATING AND STRONG JET STREAM WINDS ALOFT TO PRODUCE WIDESPREAD CLOUDINESS WITH SCATTERED TO NUMEROUS SHOWERS AND LIGHTNING STORMS...WITH THE BEST CHANCES SOUTH AND EAST OF INTERSTATE 4. THE MAIN HAZARDS WILL BE CLOUD TO GROUND LIGHTNING STRIKES AND TORRENTIAL RAINFALL...WITH LOCALIZED AMOUNTS UP TO THREE INCHES WHICH COULD CAUSE PONDING OF WATER ON ROADS AND IN AREAS WITH POOR DRAINAGE. THE BEST CHANCES FOR LOCALLY HEAVY RAIN WITH URBAN AND SMALL STREAM IMPACTS WILL BE ALONG THE COAST FROM COCOA BEACH SOUTHWARD...AND ESPECIALLY FROM FORT PIERCE SOUTHWARD TO JUPITER. BRIEF GUSTY WINDS TO AROUND 35 OR 40 MPH WILL BE ASSOCIATED WITH THE STRONGER STORMS...WITH ISOLATED GUSTS NEAR 50 MPH. STORM MOTIONS WILL BE CHAOTIC IN DIRECTION WITH A GENERAL DRIFT OF 5 TO 10 MPH IN FORWARD SPEED. HOWEVER...STORMS ALONG THE TREASURE COAST WILL MOVE NORTH AT 10 TO 15 MPH. .FLOOD IMPACT... GIVEN THE ABUNDANT LINGERING MOISTURE...THE POTENTIAL EXISTS FOR ONE TO THREE INCHES OF RAIN TO ACCUMULATE IN SPOTS. SOME ISOLATED LOCATIONS COULD REALIZE FOUR INCHES. AGAIN...THE BEST CHANCES FOR LOCALLY HEAVY RAIN WITH URBAN PONDING AND SMALL STREAM FLOODING WILL BE ALONG THE COAST FROM COCOA BEACH SOUTHWARD...AND ESPECIALLY FROM FORT PIERCE SOUTHWARD TO JUPITER. .RIP CURRENT IMPACT... PERSISTENT LONG PERIOD SWELLS WILL GENERATE A MODERATE RISK FOR RIP CURRENTS AT AREA BEACHES THIS AFTERNOON. THE TIME OF HIGHEST THREAT WILL BE AFTER 500 PM DUE TO TIDAL EFFECTS. CHECK WITH LOCAL BEACH PATROL FOR THE LATEST SURF CONDITIONS AND ALWAYS SWIM NEAR A LIFEGUARD. .MARINE THUNDERSTORM GUST IMPACT... ISOLATED STRONGER STORMS WILL BE CAPABLE OF PRODUCING WIND GUSTS UP TO 35 KNOTS ON LARGER INLAND LAKES AS WELL AS THE INTRACOASTAL WATERWAY AND NEARSHORE ATLANTIC WATERS...ESPECIALLY FROM SEBASTIAN INLET TO JUPITER INLET...AND IN VICINITY OF LAKE OKEECHOBEE. .WATERSPOUT IMPACT... THERE IS A SMALL BUT DISCERNIBLE THREAT FOR SHORT-LIVED WATERSPOUTS SOUTH OF SEBASTIAN INLET IN VICINITY OF ANY RAPIDLY DEVELOPING MARITIME SHOWERS AND STORMS. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY. SCATTERED SHOWERS AND STORMS ARE FORECAST AGAIN ON SUNDAY WITH THE HIGHEST COVERAGE TOWARD LAKE OKEECHOBEE AND JUPITER. DRIER AIR FILTERING INTO CENTRAL FLORIDA WILL LEAD TO MINIMAL COVERAGE OF RAINFALL ON MONDAY....WITH RAINFALL CHANCES RETURNING TO NORMAL FROM MID TO LATE NEXT WEEK. .SPOTTER INFORMATION STATEMENT... SPOTTERS ARE REQUESTED TO MONITOR THE WEATHER AND SELF ACTIVATE IF NEEDED...MAINLY IN BREVARD...INDIAN RIVER...SAINT LUCIE...AND MARTIN COUNTIES. ELSEWHERE...SPOTTER ACTIVATION IS NOT NEEDED. AC/DS
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
435 PM EDT SAT SEP 22 2012
FLZ064-222115-
MARTIN-
435 PM EDT SAT SEP 22 2012
...FUNNEL CLOUDS POSSIBLE OVER MARTIN COUNTY...
AT 431 PM EDT...WEATHER SPOTTERS REPORTED A FUNNEL CLOUD 6 MILES
NORTHEAST OF INDIANTOWN...MOVING NORTHEAST AT 10 MPH.
LOCATIONS IN THE PATH OF THE STORM WHICH MAY EXPERIENCE GUSTY WINDS
AND FUNNEL CLOUDS INCLUDE NORTH RIVER SHORES.
LAT...LON 2720 8056 2721 8029 2723 8028 2723 8021
2697 8010 2697 8014 2696 8014 2695 8021
2695 8050
TIME...MOT...LOC 2034Z 230DEG 9KT 2710 8040
67The Melbourne radar (KMLB), 120 km away, was scanning. The volume nearest the first event began at 20:36 UTC.
1 funnel cloud. Local standard time, as filed.
A report from a weather spotter, as well as multiple public reports, indicated a persistent funnel cloud in association with a thunderstorm east of Indiantown.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Florida in 2012Every state in 2012This day in weather historyWarnings in Florida, September 2012
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: 406468.