Severe Thunderstorm Warning 8, NWS Miami, FL

701 
WWUS52 KMFL 272302
SVSMFL

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
702 PM EDT MON APR 27 2015

FLC099-272312-
/O.CAN.KMFL.SV.W.0008.000000T0000Z-150427T2330Z/
PALM BEACH FL-
702 PM EDT MON APR 27 2015

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN PALM BEACH COUNTY
IS CANCELLED...
                
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
THEREFORE THE WARNING HAS BEEN CANCELLED. HOWEVER HEAVY RAIN IS STILL
POSSIBLE WITH THIS THUNDERSTORM.

LAT...LON 2677 8003 2680 8005 2677 8005 2675 8004
      2676 8005 2676 8006 2691 8044 2696 8043
      2696 8014 2697 8014 2697 8009 2686 8005
      2683 8005 2684 8006 2680 8004 2682 8004
      2678 8003
TIME...MOT...LOC 2301Z 293DEG 36KT 2691 8011 

$$

AK

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MIAMI FL
622 PM EDT MON APR 27 2015

.UPDATE...
QUICK UPDATE TO INCREASE TO NUMEROUS TSTORM COVERAGE EAST COAST
METRO. STRONG-SEVERE STORMS ONGOING. STAY TUNED TO
WARNINGS/STATEMENTS ISSUED. /GREGORIA

&&

.PREV DISCUSSION... /ISSUED 304 PM EDT MON APR 27 2015/

DISCUSSION...
SHOWERS AND THUNDERSTORMS HAVE BEEN SLOW TO INITIATE EARLY THIS
AFTERNOON. STILL MONITORING THE PROBABILITY OF STRONG TO SEVERE
THUNDERSTORM POTENTIAL FOR THE REMAINDER OF THE AFTERNOON AND INTO
THE EVENING HOURS. THERE ARE SEVERAL FACTORS AT PLAY THAT WILL
ENHANCE THUNDERSTORM DEVELOPMENT. FIRST OF ALL IS DIURNAL HEATING...WITH
RECORD BREAKING HEAT RECENTLY...TEMPERATURES HAVE ALREADY SOARED
INTO THE LOW 90S ALONG THE EAST COAST METRO AREAS AND INTO THE MID
90S ACROSS THE INTERIOR. SECONDLY...A WEAK COLD FRONT IS
POSITIONED ACROSS CENTRAL FLORIDA AND IS SLOWLY MOVING TO THE
SOUTH. AS IT DOES...SHOWERS AND THUNDERSTORMS SHOULD DEVELOP OUT
AHEAD OF IT AND PUSH INTO SOUTH FLORIDA. THESE FACTORS COMBINED
WITH ANY EAST COAST SEA BREEZE SHOULD PRODUCE A FEW STRONG AND
POSSIBLY SEVERE THUNDERSTORMS MAINLY ACROSS THE EAST COASTAL AREAS
THIS AFTERNOON. FAIRLY DECENT MID LEVEL FLOW IN THE 30-45 KT RANGE
COULD ALSO SUSTAIN A FEW STORMS INTO THE EVENING HOURS. ISOLATED
CONVECTION SHOULD LINGER THROUGH THE OVERNIGHT HOURS AS THE FRONT
IS EXPECTED TO STALL.

THE FRONT IS THEN EXPECTED TO PUSH BACK TO THE NORTH AS A WARM FRONT
BY TUESDAY AS A POSITIVELY TILTED H5 TROUGH MOVES EAST AND INTO THE
LOWER MISSISSIPPI VALLEY. THE ASSOCIATED SURFACE LOW WILL PUSH TO
THE EAST ACROSS THE NORTHERN GULF COAST. THIS WILL SURGE ANOTHER
DEEP SHIELD OF MOISTURE INTO THE AREA WITH PWAT VALUES NEARING 2
INCHES...RESULTING IN MORE EXTENSIVE COVERAGE OF AFTERNOON SHOWERS
AND THUNDERSTORMS ON TUESDAY.

THE BEST CHANCES FOR STRONG TO SEVERE THUNDERSTORMS LOOKS TO BE
WEDNESDAY AFTERNOON AS ANOTHER COLD FRONT APPROACHES THE FLORIDA
PENINSULA. THE AFOREMENTIONED SURFACE LOW IS EXPECTED TO DEEPEN AS
IT PUSHES ACROSS THE BIG BEND REGION. AS IT DOES...IT WILL DRIVE A
COLD FRONT THROUGH THE FLORIDA PENINSULA SOMETIME WEDNESDAY
AFTERNOON OR EVENING. THE GFS BRINGS THE FRONT THROUGH THE AREA
WEDNESDAY NIGHT AND IS CURRENTLY SLOWER WITH ITS PROGRESSION THAN
THE ECMWF. EITHER WAY...EXPECT ANOTHER DAY OF FAIRLY WIDESPREAD
CONVECTION WITH ISOLATED STRONG TO SEVERE THUNDERSTORMS POSSIBLE.

THE FRONT SHOULD CLEAR THE AREA ON THURSDAY WITH ONLY LINGERING
SHOWERS AND AN ISOLATED THUNDERSTORM OR TWO. MAINLY DRIER AND
COOLER CONDITIONS ARE EXPECTED IN THE WAKE OF THE FRONT WITH
TEMPERATURES ACTUALLY NEAR TO SLIGHTLY BELOW NORMAL FRIDAY INTO
SATURDAY. SLIGHT CHANCES FOR SHOWERS AND THUNDERSTORMS RETURN LATE
IN THE WEEKEND AS HIGH PRESSURE BEHIND THE FRONT SHIFTS INTO THE
ATLANTIC ALLOWING A MORE EASTERLY FLOW REGIME TO RETURN.

AVIATION...
TEMPO TSRA GROUPS WERE ADDED BASED UPON CCFP FOR THIS AFTERNOON.
SOME DISAGREEMENT CONTINUES AMONG GUIDANCE WITH REGARDS TO
DURATION OF SEA BREEZE THIS AFTERNOON. THIS HAS IMPLICATIONS ON
WHERE AND IF STORMS DEVELOP. HI RES LOCAL MODELS STILL IN FAVOR
OF A FEW HOURS OF SEA BREEZE TODAY WHEREAS LAMP GUIDANCE HAS BEEN
TRENDING AGAINST IT. STORMS MAY STILL BE ABLE TO FIRE EVEN
WITHOUT A SEABREEZE, ALTHOUGH MORE NUMEROUS STORMS ARE EXPECTED
WITH THE SURFACE CONVERGENCE THAT THE SEA BREEZE WILL PROVIDE. A
FEW STORMS COULD BE STRONG WITH TEMPO IFR CONDS POSSIBLE. SLT CHC
OF SOME BRIEF MVFR CIGS AT APF LATE TONIGHT AND EARLY TOMORROW.
CONVECTION SHOULD BE MORE ROBUST TUESDAY AFTERNOON WITH A FEW
UPPER LEVEL DISTURBANCES ASSISTING DEVELOPMENT.

MARINE...
GENERALLY VARIABLE WINDS WILL PREVAIL ACROSS THE AREA WATERS AT 10
KNOTS OR LESS INTO TUESDAY WITH INCREASING CHANCES FOR SHOWERS AND
THUNDERSTORMS TUESDAY AFTERNOON. BY WEDNESDAY WINDS AND SEAS
FORECAST TO INCREASE WITH SOUTHWEST WINDS IN THE 15 TO 20 KNOT
RANGE WITH ATLANTIC WINDS FORECAST TO INCREASE FURTHER TO 20 TO 23
KNOT RANGE WEDNESDAY NIGHT. GULF AND ATLANTIC SEAS FORECAST TO
REACH 4 TO 6 FEET IN THE OFF SHORE WATERS WEDNESDAY NIGHT.

&&

.PRELIMINARY POINT TEMPS/POPS...
WEST PALM BEACH  73  86  72  86 /  20  70  60  70
FORT LAUDERDALE  78  89  74  88 /  20  60  60  70
MIAMI            77  92  74  87 /  20  50  50  70
NAPLES           76  88  77  81 /  20  40  50  80

&&

.MFL WATCHES/WARNINGS/ADVISORIES...
FL...NONE.
AM...NONE.
GM...NONE.
&&

HAZARDOUS WEATHER OUTLOOK FOR SOUTH FLORIDA
NATIONAL WEATHER SERVICE MIAMI FL
1210 PM EDT MON APR 27 2015

AMZ610-630-650-651-670-671-FLZ063-066>075-168-172>174-GMZ656-657-676-
280415-
LAKE OKEECHOBEE-BISCAYNE BAY-
COASTAL WATERS FROM JUPITER INLET TO DEERFIELD BEACH, FL OUT 20 NM-
COASTAL WATERS FROM DEERFIELD BEACH TO OCEAN REEF, FL OUT 20 NM-
WATERS FROM JUPITER INLET TO DEERFIELD BEACH, FL EXTENDING FROM
20 NM TO 60 NM-
WATERS FROM DEERFIELD BEACH TO OCEAN REEF, FL EXTENDING FROM 20 NM
TO THE TERRITORIAL WATERS OF THE BAHAMAS-GLADES-HENDRY-
INLAND PALM BEACH-METRO PALM BEACH-COASTAL COLLIER-INLAND COLLIER-
INLAND BROWARD-METRO BROWARD-INLAND MIAMI DADE-METRO MIAMI DADE-
MAINLAND MONROE-COASTAL PALM BEACH-COASTAL BROWARD-
COASTAL MIAMI DADE-FAR SOUTH MIAMI DADE-
COASTAL WATERS FROM CHOKOLOSKEE TO BONITA BEACH, FL OUT 20 NM-
COASTAL WATERS FROM EAST CAPE SABLE TO CHOKOLOSKEE, FL OUT 20 NM-
GULF WATERS FROM CHOKOLOSKEE TO BONITA BEACH, FL EXTENDING FROM
20 TO 60 NM-
1210 PM EDT MON APR 27 2015

...A FEW SEVERE THUNDERSTORMS POSSIBLE, MAINLY EASTERN AREAS...
...HEAT INDICES ABOVE 100 DEGREES OVER THE EVERGLADES...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH FLORIDA.

.DAY ONE...THIS AFTERNOON AND TONIGHT

THUNDERSTORMS: SCATTERED THUNDERSTORMS ARE EXPECTED TO DEVELOP THIS
AFTERNOON OVER MUCH OF SOUTH FLORIDA. SOME OF THESE THUNDERSTORMS
MAY BE STRONG...BRINGING THREATS OF FREQUENT CLOUD-TO-GROUND
LIGHTNING...GUSTY WINDS...AND HAIL. AN ISOLATED SEVERE
THUNDERSTORM CAN'T BE RULED OUT THIS AFTERNOON.

WIND: STRONGER THUNDERSTORMS WILL BE CAPABLE OF PRODUCE WIND
GUSTS IN EXCESS OF 50 MPH. A FEW SEVERE WIND GUSTS OF 60 MPH CANT
BE RULED OUT OVER EASTERN AREAS.

HAIL: SMALL HAIL IS POSSIBLE IN STRONGER THUNDERSTORMS. HAIL TO
THE SIZE OF QUARTERS CAN'T BE RULED OUT.

FLOODING: TORRENTIAL DOWNPOURS OVER EAST COAST URBAN AREAS COULD
LEAD TO LOCALIZED FLOODING.

TEMPERATURES: HEAT INDICES OVER THE EVERGLADES WILL EXCEED 100
DEGREES TODAY.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

THUNDERSTORMS ARE LIKELY TUESDAY AND WEDNESDAY...AND SEVERE
THUNDERSTORMS CAN'T BE RULED OUT. A SLIGHT CHANCE FOR
THUNDERSTORMS WILL CONTINUE THURSDAY AND FRIDAY.

A RISK FOR RIP CURRENTS EXISTS ON GULF BEACHES WEDNESDAY AND
THURSDAY. SEAS MAY BECOME HAZARDOUS ACROSS THE GULF WATERS INTO
THURSDAY, ASSOCIATED WITH A LATE WEEK COLD FRONT.

.SPOTTER INFORMATION STATEMENT...

WIDESPREAD SPOTTER ACTIVATION IS NOT ANTICIPATED, HOWEVER
INDIVIDUAL SPOTTERS ARE ENCOURAGED TO REPORT HIGH WIND, HAIL AND
FLOODING TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN
MIAMI.

FOR MORE INFORMATION...VISIT THE NATIONAL WEATHER SERVICE IN
MIAMI WEBSITE AT WWW.WEATHER.GOV/MIAMI.

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MIAMI FL
602 PM EDT MON APR 27 2015

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0558 PM     HAIL             4 WNW MIRAMAR           26.01N  80.40W
04/27/2015  E1.00 INCH       BROWARD            FL   NWS EMPLOYEE

            AN OFF DUTY NWS EMPLOYEE REPORTED QUARTER SIZED HAIL AT
            PINES BLVD AND SW 186TH AVE

&&

EVENT NUMBER MFL1500035

CWC

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MIAMI FL
604 PM EDT MON APR 27 2015

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0557 PM     HAIL             3 W PEMBROKE PINES      26.01N  80.39W
04/27/2015  E1.00 INCH       BROWARD            FL   TRAINED SPOTTER

            A TRAINED WEATHER SPOTTER REPORTED QUARTER SIZED HAIL
            AT 180TH AVE AND PINES BLVD.

&&

EVENT NUMBER MFL1500036

CWC

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MIAMI FL
614 PM EDT MON APR 27 2015

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0610 PM     HAIL             4 WNW PEMBROKE PINES    26.04N  80.40W
04/27/2015  E0.75 INCH       BROWARD            FL   TRAINED SPOTTER

            A TRAINED WEATHER SPOTTER REPORTED PENNY SIZED HAIL AT
            186TH AVE AND STERLING RD

&&

EVENT NUMBER MFL1500037

CWC

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MIAMI FL
616 PM EDT MON APR 27 2015

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0610 PM     HAIL             2 WNW MIRAMAR           25.99N  80.38W
04/27/2015  E0.25 INCH       BROWARD            FL   NWS EMPLOYEE

            AN OFF DUTY NWS EMPLOYEE REPORTED PEA SIZED HAIL AT SW
            172ND AVE AND PEMBROKE RD.

&&

EVENT NUMBER MFL1500038

CWC

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
616 PM EDT MON APR 27 2015

FLZ067-272300-
INLAND PALM BEACH COUNTY FL-
616 PM EDT MON APR 27 2015

...SIGNIFICANT WEATHER ADVISORY FOR 45 TO 55 MPH WINDS FOR NORTH
CENTRAL PALM BEACH COUNTY UNTIL 700 PM EDT...

* AT 616 PM EDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM
  OUTFLOW BOUNDARY NEAR J AND S FISH CAMP...MOVING EAST AT 20 MPH.

* THE PRIMARY IMPACTS WILL BE GUSTY WINDS OF 45 TO 55 MPH. THESE
  WINDS CAN DOWN SMALL TREE LIMBS AND BRANCHES...AND BLOW AROUND
  UNSECURED SMALL OBJECTS. SEEK SHELTER IN A SAFE BUILDING UNTIL THE
  WIND PASSES.

* LOCATIONS IMPACTED INCLUDE...
  PAHOKEE AND CANAL POINT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

RESIDENTS SHOULD REMAIN ON THE ALERT FOR ADDITIONAL STATEMENTS AND
POSSIBLE WARNINGS.

&&

LAT...LON 2696 8036 2685 8035 2683 8066 2689 8062
      2696 8061
TIME...MOT...LOC 2216Z 265DEG 18KT 2702 8064

AK

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
629 PM EDT MON APR 27 2015

FLZ067-068-071-072-168-172-272315-
INLAND BROWARD COUNTY FL-METRO BROWARD COUNTY FL-
COASTAL BROWARD COUNTY FL-INLAND PALM BEACH COUNTY FL-
COASTAL PALM BEACH COUNTY FL-METRO PALM BEACH COUNTY FL-
629 PM EDT MON APR 27 2015

...SIGNIFICANT WEATHER ADVISORY FOR FREQUENT TO EXCESSIVE
LIGHTNING...UP TO NICKEL SIZED HAIL AND 45 TO 55 MPH WINDS FOR
NORTHEASTERN BROWARD AND SOUTHEASTERN PALM BEACH COUNTIES UNTIL 715
PM EDT...

* AT 629 PM EDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM
  OVER COCONUT CREEK...OR OVER MARGATE...MOVING NORTHEAST AT 30 MPH.

* FREQUENT TO EXCESSIVE LIGHTNING...GUSTY WINDS FROM 45 TO 55 MPH...
  UP TO NICKEL-SIZED HAIL...TORRENTIAL DOWNPOURS...OR A COMBINATION
  OF THESE ARE POSSIBLE. LIGHTNING IS THE NUMBER ONE WEATHER RELATED
  KILLER IN FLORIDA. TREES AND OPEN SHELTERS OFFER NO PROTECTION.
  THESE WINDS CAN DOWN SMALL TREE LIMBS AND BRANCHES...AND BLOW
  AROUND UNSECURED SMALL OBJECTS. SEEK SHELTER IN A SAFE BUILDING
  UNTIL THE STORM PASSES.

* LOCATIONS IMPACTED INCLUDE...
  FORT LAUDERDALE...CORAL SPRINGS...POMPANO BEACH...BOCA RATON...
  DEERFIELD BEACH...BOYNTON BEACH...DELRAY BEACH...TAMARAC...
  MARGATE...LIGHTHOUSE POINT...LAUDERDALE-BY-THE-SEA...HIGHLAND
  BEACH...OCEAN RIDGE...LAUDERHILL...COCONUT CREEK...OAKLAND PARK...
  NORTH LAUDERDALE...LAUDERDALE LAKES...PARKLAND AND WILTON MANORS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

RESIDENTS SHOULD REMAIN ON THE ALERT FOR ADDITIONAL STATEMENTS AND
POSSIBLE WARNINGS.

&&

LAT...LON 2643 8006 2636 8007 2619 8009 2618 8010
      2619 8010 2618 8011 2614 8018 2626 8033
      2655 8005 2653 8005 2657 8004
TIME...MOT...LOC 2229Z 223DEG 28KT 2626 8020

AK