Severe Thunderstorm Warning 6, NWS Melbourne, FL

130 
WWUS52 KMLB 041953
SVSMLB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
353 PM EDT THU APR 4 2013

FLC093-042003-
/O.CAN.KMLB.SV.W.0006.000000T0000Z-130404T2030Z/
OKEECHOBEE-
353 PM EDT THU APR 4 2013

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN OKEECHOBEE COUNTY
IS CANCELLED...

A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM EDT THURSDAY EVENING
FOR EASTERN FLORIDA.

LAT...LON 2739 8026 2740 8028 2745 8031 2744 8031
      2739 8029 2738 8030 2723 8057 2720 8065
      2720 8067 2741 8067 2756 8040 2755 8031
      2739 8025
TIME...MOT...LOC 1953Z 250DEG 31KT 2733 8057

$$

FLC111-042030-
/O.CON.KMLB.SV.W.0006.000000T0000Z-130404T2030Z/
ST. LUCIE-
353 PM EDT THU APR 4 2013

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 430 PM EDT
FOR ST. LUCIE COUNTY...

AT 348 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUED TO
DETECT A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS
LOCATED 12 MILES WEST OF CARLTON...OR 13 MILES NORTHEAST OF TREASURE
ISLAND...MOVING EAST AT 25 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO DIGITAL
DOMAIN PARK...TRADITION FIELD...WHITE CITY...FORT PIERCE SOUTH...
LAKEWOOD PARK...COLLINS PARK ESTATES...SAINT LUCIE AIRPORT...FORT
PIERCE NORTH...FORT PIERCE...INDRIO...SAINT LUCIE VILLAGE...QUEENS
COVE...SURFSIDE PARK...FREDERICK DOUGLASS PARK...FORT PIERCE INLET...
FORT PIERCE OCEAN PARK AND PEPPER BEACH PARK

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM EDT THURSDAY EVENING
FOR EASTERN FLORIDA.

&&

LAT...LON 2739 8026 2740 8028 2745 8031 2744 8031
      2739 8029 2738 8030 2723 8057 2720 8065
      2720 8067 2741 8067 2756 8040 2755 8031
      2739 8025
TIME...MOT...LOC 1953Z 250DEG 31KT 2733 8057

$$

SEDLOCK

772 
WWUS52 KMLB 042011
SVSMLB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
411 PM EDT THU APR 4 2013

FLC111-042030-
/O.CON.KMLB.SV.W.0006.000000T0000Z-130404T2030Z/
ST. LUCIE-
411 PM EDT THU APR 4 2013

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 430 PM EDT
FOR CENTRAL ST. LUCIE COUNTY...

AT 406 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUED TO
DETECT A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS
LOCATED NEAR CARLTON...OR 8 MILES WEST OF WHITE CITY...MOVING
NORTHEAST AT 25 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO WHITE
CITY...FORT PIERCE SOUTH...COLLINS PARK ESTATES...FORT PIERCE
NORTH...SAINT LUCIE AIRPORT...FORT PIERCE...SURFSIDE PARK...SAINT
LUCIE VILLAGE...PEPPER BEACH PARK...FREDERICK DOUGLASS PARK...FORT
PIERCE OCEAN PARK AND FORT PIERCE INLET

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. IF A TORNADO
IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A STURDY
STRUCTURE...SUCH AS A SMALL INTERIOR ROOM.

&&

LAT...LON 2739 8026 2740 8028 2745 8031 2744 8031
      2739 8029 2738 8030 2727 8050 2725 8054
      2743 8058 2752 8030 2739 8025
TIME...MOT...LOC 2011Z 237DEG 26KT 2736 8043

$$

SEDLOCK

648 
WWUS52 KMLB 042028
SVSMLB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
428 PM EDT THU APR 4 2013

FLC111-042039-
/O.EXP.KMLB.SV.W.0006.000000T0000Z-130404T2030Z/
ST. LUCIE-
428 PM EDT THU APR 4 2013

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL ST. LUCIE COUNTY WILL
EXPIRE AT 430 PM EDT...

THE SEVERE STORM THAT PROMPTED THE WARNING HAD WEAKENED...THUS THE 
WARNING HAS BEEN ALLOWED TO EXPIRE.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM EDT THURSDAY EVENING
FOR EASTERN FLORIDA.

LAT...LON 2739 8026 2740 8028 2745 8031 2744 8031
      2739 8029 2738 8030 2727 8050 2725 8054
      2743 8058 2752 8030 2739 8025
TIME...MOT...LOC 2029Z 237DEG 26KT 2743 8031

$$

SEDLOCK

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MELBOURNE FL
10 AM EDT THU APR 4 2013

.DISCUSSION...

...STRONG TO SEVERE STORMS POSSIBLE THIS AFTERNOON...

WEAK LOW PRESSURE (1013 MB) LOCATED OVER THE FL PANHANDLE THIS
MORNING IS FORECAST TO MOVE E/NE AND SLOWLY STRENGTHEN AS IT PUSHES
OFF THE GA COAST THIS EVE. CLUSTER OF STRONG STORMS OVER THE EASTERN
GULF OF MEXICO SUPPORTED BY DUAL UPPER JET STRUCTURE...13KM RUC
SHOWS 110 KT SOUTHERN JET OVER THE SOUTHEAST US AND 80 KT
SUBTROPICAL JET OVER THE YUCATAN/FL STRAITS. THIS SHOULD ALLOW
STORMS TO PUSH ONSHORE THE FL GULF COAST NEXT FEW HOURS. ALTHOUGH
THE WARM FRONT HAS LIFTED NORTH OF THE AREA THERE APPEARS TO BE ONE
OR MORE CONVERGENT/OUTFLOW BOUNDARIES DRAPED ACROSS CENTRAL FL...ONE
DROPPING SOUTH OVER ORANGE AND BREVARD COUNTIES BUT ANOTHER
CONVECTIVELY ACTIVE BOUNDARY ACROSS POLK AND OSCEOLA. IN FACT THERE
IS SOME INDICATION OF A WEAK LOW PRESSURE NEAR THE CAPE. FOR THIS
REASON...GREATER THREAT FOR SEVERE STORMS APPEARS TO BE ACROSS
CENTRAL AND SOUTHERN SECTIONS THIS AFTERNOON...MAINLY SOUTH OF
ORLANDO. IT IS PROBABLE A CONVECTIVE WATCH BOX COULD BE ISSUED FOR
PORTIONS OF THE FL PENINSULA THIS AFTERNOON.

SURFACE HEATING WILL BE CRITICAL FOR INCREASING INSTABILITY AND
DESTABILIZATION. HOWEVER...CANOPY OF MID AND HIGH CLOUDS ALONG WITH
SCATTERED SHOWERS ARE LIMITING SUNSHINE SO FAR.

&&

.AVIATION...
MVFR CONDITIONS FROM LOW CIGS SHOULD BECOME VFR BY 18Z. STRONG WIND
GUSTS 35-45 KNOTS POSSIBLE IN CONVECTION AFT 16Z ALG WITH TEMPO IFR
CONDS.

&&

.MARINE...
SFC ANALYSIS SHOWS AN ENHANCEMENT TO THE SOUTHERLY GRADIENT FLOW
OVER THE NEARSHORE ATLC WITH BUOY 009 GUSTING TO 31 KNOTS RECENTLY.
SMALL CRAFT ADVISORY IS IN EFFECT FOR THE OFFSHORE WATERS. WILL
HEADLINE A CAUTION FOR THE NEARSHORE.

&&

.PRELIMINARY POINT TEMPS/POPS...
DAB  79  66  76  56 /  80  70  40  10
MCO  80  67  79  55 /  80  70  40  10
MLB  81  69  80  58 /  70  70  50  10
VRB  81  70  80  58 /  70  70  60  10
LEE  80  65  77  54 /  80  70  40  10
SFB  81  67  78  57 /  80  70  40  10
ORL  80  67  79  57 /  80  70  40  10
FPR  81  72  80  58 /  60  70  60  10

&&

.MLB WATCHES/WARNINGS/ADVISORIES...
FL...NONE.
AM...SMALL CRAFT ADVISORY FROM 11 AM THIS MORNING TO 2 PM FRIDAY
     FOR 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.

     SMALL CRAFT ADVISORY FROM 5 PM THIS AFTERNOON TO 2 PM FRIDAY
     FOR WATERS FROM SEBASTIAN INLET TO JUPITER INLET 20 TO 60
     NM OFFSHORE.

&&

KELLY/BRAGAW

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE MELBOURNE FL
1218 PM EDT THU APR 4 2013

AMZ550-552-555-570-572-575-FLZ041-044>047-053-054-058-059-064-141-
144-147-042300-
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-
1218 PM EDT THU APR 4 2013

THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL FLORIDA.

.DAY ONE...TODAY AND TONIGHT.

.THUNDERSTORM IMPACT...
A CLUSTER OF STRONG STORMS WILL MOVE ONSHORE THE FLORIDA GULF
COAST JUST SOUTH OF TAMPA AND PUSH RAPIDLY EAST ACROSS THE CENTRAL
PENINSULA...MAINLY SOUTH OF ORLANDO THROUGH THIS AFTERNOON. A
THREAT FOR FREQUENT LIGHTNING STRIKES...HAIL AND STRONG WIND GUSTS
WILL ACCOMPANY THESE STORMS AS THEY AFFECT AREAS SOUTH OF A LINE
FROM POINCIANA TO COCOA BEACH. STORM MOTION IS TOWARD THE EAST AT 25
TO 35 MPH. LOW LEVEL SHEAR APPEARS SUFFICIENT TO PRODUCE ISOLATED
TORNADOES. AS A RESULT...A TORNADO WATCH IS IN EFFECT UNTIL 8 PM
FOR OSCEOLA...BREVARD...INDIAN RIVER...OKEECHOBEE...SAINT LUCIE
AND MARTIN COUNTIES.

THERE MAY BE A DECREASE OR LULL IN CONVECTIVE ACTIVITY LATER THIS
EVENING BUT A STRENGTHENING LOW LEVEL JET AHEAD OF AN UPPER TROUGH
WILL BRING ANOTHER THREAT FOR SEVERE STORMS IN THE FORM OF A SQUALL
LINE ACROSS MUCH OF EAST CENTRAL FLORIDA AFTER MIDNIGHT AND
CONTINUING FRIDAY MORNING FOR THE TREASURE COAST AND OKEECHOBEE.
STORM MOTION LATER TONIGHT WILL BE NOTICEABLY FASTER...TOWARD THE
NORTHEAST AT 40 TO 50 MPH.

PERSONS IN EAST CENTRAL FLORIDA SHOULD LISTEN FOR FURTHER
STATEMENTS AND POSSIBLE SEVERE WEATHER WATCHES OR WARNINGS LATER
TODAY INTO TONIGHT. BE PREPARED TO MOVE TO A SAFE LOCATION IF A
WARNING IS ISSUED FOR YOUR COMMUNITY.

.MARINE THUNDERSTORM GUST IMPACT...
LIGHTNING STORMS MOVING FROM WEST TO EAST WILL BE CAPABLE OF
PRODUCING WIND GUSTS IN EXCESS OF 35 KNOTS AND CLOUD TO WATER
LIGHTNING STRIKES AS THEY MOVE OVER INLAND LAKES...THE
INTRACOASTAL WATERWAY AND ENTER THE NEARSHORE ATLANTIC WATERS
THIS AFTERNOON. ADDITIONAL STRONG STORMS ARE EXPECTED TO AFFECT
EAST CENTRAL FLORIDA AND THE ADJACENT COASTAL WATERS LATE TONIGHT
AND FRIDAY MORNING.

.WATERSPOUT IMPACT...
SUFFICIENT LOW LEVEL WIND SHEAR MAY ALLOW THE STRONGER STORMS TO
PRODUCE WATERSPOUTS ON INLAND LAKES...THE INTRACOASTAL AND NEAR
SHORE ATLANTIC WATERS.

.WIND AND SEA IMPACT...
INCREASING SOUTH TO SOUTHWEST WINDS AHEAD OF AN APPROACHING COLD
FRONT WILL PRODUCE SMALL CRAFT ADVISORY CONDITIONS BEYOND 20 MILES
OF SHORE. WINDS WILL REACH 20 TO 25 KNOTS WITH SEAS BUILDING TO 7
FEET THIS AFTERNOON. SMALL CRAFT SHOULD EXERCISE CAUTION ON THE
NEARSHORE WATERS FOR SEAS UP TO 6 FEET AND WINDS OF 15 TO 20
KNOTS.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY.
A COLD FRONT WILL CLEAR THE TREASURE COAST FRIDAY MORNING. HIGH
PRESSURE BUILDS IN BEHIND THE COLD FRONT. NORTH WINDS SHIFT TO
THE NORTHEAST THEN TO THE EAST AND DIMINISH TO 15 KNOTS OR LESS
LATE FRIDAY.

.SPOTTER INFORMATION STATEMENT...
SPOTTERS SHOULD MONITOR THE WEATHER. FORMAL ACTIVATION MAY BE
NEEDED.

KELLY/WIMMER

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
303 PM EDT THU APR 4 2013

FLZ064-042000-
MARTIN-
303 PM EDT THU APR 4 2013

...A SIGNIFICANT WEATHER ADVISORY IS IN EFFECT FOR STRONG WIND GUSTS
BETWEEN 45 AND 55 MPH AND SMALL HAIL OVER MARTIN COUNTY...

* UNTIL 400 PM EDT.

AT 301 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STORM CAPABLE OF PRODUCING STRONG WINDS AND SMALL HAIL 6 MILES
SOUTHEAST OF INDIANTOWN...MOVING NORTHEAST AT 20 MPH.

LOCATIONS IN THE PATH OF THE STORM WHICH MAY EXPERIENCE STRONG WINDS
AND SMALL HAIL INCLUDE SEWALLS POINT AND WITHAM FIELD.

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.

LAT...LON 2720 8040 2722 8017 2721 8015 2716 8015
      2703 8009 2697 8008 2697 8014 2695 8015
      2695 8017 2695 8057
TIME...MOT...LOC 1903Z 225DEG 16KT 2695 8042

BRAGAW

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
329 PM EDT THU APR 4 2013

FLZ054-058-059-064-042030-
INDIAN RIVER-MARTIN-OKEECHOBEE-ST. LUCIE-
329 PM EDT THU APR 4 2013

...A SIGNIFICANT WEATHER ADVISORY IS IN EFFECT FOR STRONG WIND GUSTS
BETWEEN 45 AND 55 MPH AND SMALL HAIL OVER SOUTHERN INDIAN RIVER
COUNTY...WESTERN MARTIN COUNTY...OKEECHOBEE COUNTY...ST. LUCIE
COUNTY...

* UNTIL 430 PM EDT.

AT 324 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
CLUSTER OF STORMS CAPABLE OF PRODUCING STRONG WINDS AND SMALL HAIL
OVER OKEECHOBEE...MOVING NORTHEAST AT 20 TO 25 MPH.

LOCATIONS IN THE PATH OF THESE STORMS WHICH MAY EXPERIENCE STRONG
WINDS AND SMALL HAIL INCLUDE FOUR SEASONS ESTATES AND TAYLOR CREEK.

THE PRIMARY THREAT WILL BE FREQUENT CLOUD TO GROUND LIGHTNING
STRIKES...COIN SIZE HAIL 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 2710 8067 2716 8072 2720 8080 2715 8087
      2750 8109 2771 8064 2742 8030 2735 8027
      2739 8026 2736 8023 2723 8017 2722 8017
      2725 8021 2723 8021 2722 8021 2720 8041
      2695 8057 2695 8061
TIME...MOT...LOC 1928Z 235DEG 22KT 2720 8084

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