Alert archive / Florida / Special Weather Statements in 2012
Special Weather Statement, NWS Melbourne, FL
NWS Melbourne, FL issued this special weather statement at Aug 10, 2012, 4:41 PM EDT for Volusia County, Florida. It was in force for 49 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Aug 10, 2012, 4:41 PM EDT (20:41 UTC)
- Expired
- Aug 10, 2012, 5:30 PM EDT
- In force
- 49 min
- Issued by
- NWS Melbourne, FL
County Volusia County, FL
The radar
The Melbourne radar (KMLB), 130 km from the middle of the area, began a volume at 20:42 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Tampa Bay, FL (KTBW), launched 12:00Z, 8.7 hours before the alert went out and 185 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 1897 J/kg
- Mixed-layer CIN
- -13 J/kg
- Mixed-layer LCL
- 711 m above ground
- 0-6 km bulk shear
- 5 kt
- 0-1 km storm-relative helicity
- -8 m²/s²
- 0-3 km storm-relative helicity
- 16 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>What forecasters said that day
The local office's own words before this special weather statement went out, 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 this special weather statement went out at Aug 10, 3:11 PM EDT, 1 hour 30 minutes earlier.
Area forecast discussion, Aug 10, 3:11 PM EDT, 1 hour 30 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE MELBOURNE FL 311 PM EDT FRI AUG 10 2012 .DISCUSSION... RADAR SHOWS TWO GENERAL AREAS OF PCPN WITH THE AREA OVER THE TREASURE COAST/LAKE OKEE ASCD WITH A TROPICAL WAVE MOVING ACROSS THE FL STRAITS AND ONSHORE THE S FL COAST. ADTL AREA W OF METRO ORLANDO MARKED BY SLOW MOVING CONVECTION PRODUCING SPOTTY HEAVY RAIN OVER PORTIONS OF LAKE COUNTY. ADT'L STORMS WILL DEVELOP IN THE AFTERNOON HEAT WITH NUMEROUS BOUNDARY MERGERS KEEPING ONGOING SCT STORMS PERSISTING INTO THE EVENING OVER MUCH OF CENTRAL AND S FL. ACTIVITY STRONGLY TIED TO SFC HEATING AND BOUNDARY INTERACTIONS SHOULD DIMINISH SLOWLY IN COVERAGE DURING THE EVENING. RATHER WEAK STEERING GENERALLY NOT FAVORABLE TO KEEP ACTIVITY GOING OVERNIGHT...HOWEVER WL KEEP A SMALL MENTION FOR THE COAST DUE TO PROXIMITY OF SFC WAVE AND DEEPENING MOISTURE. FOR SAT/SUN...HAVE INCREASED RAIN CHCS SLIGHTLY ACROSS AREA DUE TO CONSIDERABLE LINGERING MOISTURE ON LEE SIDE OF PASSING WAVE. SOUTH TO SOUTHWEST FLOW SHOULD DELAY ONSET OF SEA BREEZE TO THE MID AFTERNOON ALLOWING HIGHS TO REACH THE MID 90S INTERIOR AND THE LOW 90S AT THE COAST. MORNING LOWS RANGE FROM THE LOWER AND MID 70S EVERYWHERE EXCEPT THE UPPER 70S AT THE IMMEDIATE COAST. MON-FRI...(PREV DISC) UPPER TROUGHING OVER THE SOUTHEAST SUPPRESSES THE SURFACE RIDGE TO SOUTHERN FLORIDA. THE RESULTING SOUTH TO SOUTHWEST FLOW WILL CONTINUE TO FEED GULF MOISTURE INTO CENTRAL FLORIDA AND KEEP RAIN CHANCES AROUND 40 PERCENT. DEPENDING ON THE POSITION OF THE LOW LEVEL RIDGE AXIS AND THE STRENGTH OF THE SOUTHWEST FLOW EACH DAY... THE SEA BREEZE WILL EITHER FORM EARLY AFTERNOON OR MID TO LATE AFTERNOON. LATER ONSET OF THE SEA BREEZE WILL MEAN SLIGHTLY HIGHER THAN THE CLIMO HIGHS. HIGHS IN THE LOW 90S COASTAL COUNTIES AND MID 90S INTERIOR COUNTIES. LOWS LOW TO MID 70S EVERYWHERE EXCEPT THE UPPER 70S AT THE IMMEDIATE COAST. && .AVIATION... SCT PCPN AREAS WITH ISOLD TS WITH LCL MVFR/BRIEF IFR CONDS THROUGH 02Z THEN BECMG VFR FM 04Z-12Z. SCT TO NMRS SHRA DEVELOPING BY 16Z SAT WITH SCT IFR CONDS AFT 16Z. && .MARINE... SEA HGHTS GENERALLY LESS THAN 3 FT OVERNIGHT WITH SIG WV NEAR 3 FT FOR THE OUTER WATERS INTO SAT. WINDS/SEAS LOCALLY HIGHER NEAR MARINE TS TONIGHT. SAT-TUE...SURFACE RIDGE REMAINS OVER SOUTHERN FLORIDA THROUGH THE PERIOD. THIS RESULTS IN AN OFFSHORE FLOW WITH AN AFTERNOON ONSHORE SEA BREEZE COMPONENT AT THE COAST. WINDS 15 KNOTS OR LESS AND SEAS 1 TO 2 FEET NEARSHORE AND 2 TO 3 FEET OFFSHORE. && .PRELIMINARY POINT TEMPS/POPS... DAB 75 91 75 91 / 30 50 20 40 MCO 75 93 75 92 / 20 50 20 50 MLB 75 91 74 89 / 30 50 20 40 VRB 74 92 74 91 / 30 60 20 40 LEE 76 94 77 93 / 20 40 20 50 SFB 77 94 77 93 / 20 50 20 50 ORL 76 94 77 93 / 20 50 20 50 FPR 73 91 73 90 / 40 60 20 40 && .MLB WATCHES/WARNINGS/ADVISORIES... FL...NONE. AM...NONE. && PUBLIC/MARINE/AVIATION...PENDERGRAST RADAR/IMPACT WEATHER....WEITLICH
Hazardous weather outlook, Aug 10, 4:54 AM EDT, 11 hours 47 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE MELBOURNE FL 454 AM EDT FRI AUG 10 2012 AMZ550-552-555-570-572-575-FLZ041-044>047-053-054-058-059-064-141- 144-147-102100- 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- 454 AM EDT FRI AUG 10 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL FLORIDA. .DAY ONE...TODAY AND TONIGHT. .THUNDERSTORM IMPACT... ATMOSPHERIC MOISTURE IS FORECAST TO INCREASE TODAY SO THE COVERAGE OF AFTERNOON AND EVENING STORMS SHOULD BE A LITTLE GREATER THAN THURSDAY. THE INLAND MOVING SEA BREEZE WILL BE THE INITIAL FOCUS...THEN MULTIPLE BOUNDARY INTERACTIONS ACROSS INTERIOR SECTIONS WILL GENERATE THE HIGHEST COVERAGE DURING THE AFTERNOON AND EVENING. THE MAIN HAZARD WITH ISOLATED STRONG STORMS WILL BE FREQUENT LIGHTNING STRIKES. SOME LINGERING DRY AIR IN THE MID LEVELS OF THE ATMOSPHERE WILL ALSO LEAD TO STRONG WIND GUSTS TO AROUND 50 MPH IN A FEW STRONG STORMS. .FLOOD IMPACT... STORMS WILL HAVE LITTLE MOTION TODAY SO A FEW STRONG STORMS WILL PRODUCE LOCAL 2 TO 3 INCH RAIN AMOUNTS. .MARINE THUNDERSTORM GUST IMPACT... ISOLATED STRONG STORMS WILL PRODUCE WIND GUSTS OVER 34 KNOTS ACROSS THE MAINLAND THIS AFTERNOON. LITTLE STORM MOTION IS EXPECTED...BUT GUSTY CONDITIONS COULD SPREAD WELL AWAY FROM THE HEAVY RAIN AND LIGHTNING AND AFFECT THE INTRACOASTAL WATERS. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY. GREATER DEEP LAYER MOISTURE AND A LIGHT SOUTHWEST STEERING FLOW WILL BRING SCATTERED AFTERNOON STORMS TO MOST SECTIONS THROUGH EARLY NEXT WEEK. .SPOTTER INFORMATION STATEMENT... SPOTTERS SHOULD MONITOR THE WEATHER AND SELF ACTIVATE THIS AFTERNOON IF NEEDED. LASCODY
In the hours before
Special weather statement, Aug 10, 2:16 PM EDT, 2 hours 25 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MELBOURNE FL 216 PM EDT FRI AUG 10 2012 FLZ044-045-144-101900- NORTHERN LAKE COUNTY-ORANGE-SOUTHERN LAKE COUNTY- 216 PM EDT FRI AUG 10 2012 ...A SIGNIFICANT WEATHER ADVISORY IS IN EFFECT FOR STRONG WIND GUSTS BETWEEN 45 AND 50 MPH OVER CENTRAL LAKE COUNTY...NORTHWESTERN ORANGE COUNTY... * UNTIL 300 PM EDT. AT 210 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STORM CAPABLE OF PRODUCING STRONG WIND GUSTS OVER HOWEY IN THE HILLS...MOVING NORTHEAST AT 5 TO 10 MPH. THE PRIMARY THREAT WILL BE CLOUD TO GROUND LIGHTNING STRIKES AND GUSTY WINDS OF 45 TO 50 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. LAT...LON 2888 8167 2866 8156 2860 8180 2876 8189 TIME...MOT...LOC 1815Z 234DEG 4KT 2870 8177 WEITLICH
Special weather statement, Aug 10, 4:41 PM EDT, 0 minutes before
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</html>The office that day
Everything else NWS Melbourne, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 10, 2:16 PM EDT | Special Weather Statement | MLB | Lake | 44 min |
| Aug 10, 5:29 PM EDT | Special Marine Warning | MLB | 68 min |
Nearby
Special Weather Statements in Florida, 2012Every special weather statement in 2012
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.