Alert archive / Florida / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 36, NWS Miami, FL

May 2, 2013Palm Beach County, Florida

NWS Miami, FL issued this severe thunderstorm warning at May 2, 2013, 1:21 PM EDT for Palm Beach County, Florida. It was in force for 24 min. 3 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: May 2, 2013, 1:21 PM EDT (17:21 UTC)
Expired: May 2, 2013, 1:45 PM EDT
In force: 24 min
Issued by: NWS Miami, FL
Area: Storm-based polygon

County Palm Beach County, FL

The radar

The Miami radar (KAMX), 93 km from the middle of the area, began a volume at 17:23 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.

What was reported inside it

Time	Report	Where	Remark
May 2, 1:25 PM EDT	FUNNEL CLOUD	1 Ssw Highland Beach, FL	BOCA RATON POLICE DEPARTMENT REPORTED A POSSIBLE TORNADO IN THE 3000 BLOCK OF N FEDERAL HIGHWAY.
May 2, 1:25 PM EDT	TSTM WND DMG	1 Ne Boca Raton, FL	POWER LINES REPORTED DOWN IN THE 2800 BLOCK OF N DIXIE HIGHWAY... REPORT OBTAINED FROM BOCA RATON LAW ENFORCEMENT VIA SOCIAL MEDIA.
May 2, 1:25 PM EDT	TORNADO	2 Ne Boca Raton, FL	SURVEY INDICATED AN EF0 TORNADO IN NORTHEASTERN SECTIONS OF BOCA RATON FROM NEAR NORTH DIXIE HIGHWAY AND NE 28 ST TO NEAR FEDERAL HIGHWAY AND NE 32 ST. MAX WINDS ESTIMATED AROUND 70 MPH WITH A PATH LENGTH OF 0.4 MILES AND WIDTH OF 50 YARDS. DAMAGE CONSISTED PR

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched one storm report to this severe thunderstorm warning; the first came 4 minutes after it went out.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Miami, FL (KMFL), launched 12:00Z, 5.4 hours before the alert went out and 67 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 871 J/kg
Mixed-layer CIN: -30 J/kg
Mixed-layer LCL: 800 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 5 m²/s²
0-3 km storm-relative helicity: 27 m²/s²
Significant tornado parameter: -0.0
Supercell composite: -0.2

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

039 
WUUS52 KMFL 021721
SVRMFL
FLC099-021745-
/O.NEW.KMFL.SV.W.0036.130502T1721Z-130502T1745Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MIAMI FL
121 PM EDT THU MAY 2 2013

THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN PALM BEACH COUNTY IN SOUTH FLORIDA.

* UNTIL 145 PM EDT

* AT 120 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
  OF 60 MPH.  THIS STORM WAS LOCATED NEAR BOCA RATON...AND MOVING
  NORTHEAST AT 5 MPH.

* THE STORM WILL AFFECT...
  BOCA RATON...
  AND SURROUNDING COMMUNITIES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS IN EXCESS OF 58 MPH. 
FREQUENT TO EXCESSIVE LIGHTNING. IF THE STORM APPROACHES YOUR 
LOCATION, SEEK SHELTER IN AN ENCLOSED BUILDING ON THE LOWEST FLOOR 
AND STAY AWAY FROM WINDOWS.

SEVERE THUNDERSTORMS CAN ALSO PRODUCE TORNADOES WITH LITTLE OR NO
ADVANCE WARNING. PREPARE TO MOVE TO A PLACE OF SAFETY IN AN INTERIOR
ROOM IN THE LOWEST FLOOR OF YOUR HOUSE OR BUSINESS IF A TORNADO IS
SPOTTED.

&&

LAT...LON 2640 8006 2637 8006 2635 8006 2634 8011
      2634 8016 2648 8015 2647 8005 2643 8005
TIME...MOT...LOC 1721Z 212DEG 3KT 2636 8011

$$
KONARIK

1 follow-up statement

522 
WWUS52 KMFL 021739
SVSMFL

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
139 PM EDT THU MAY 2 2013

FLC099-021750-
/O.EXP.KMFL.SV.W.0036.000000T0000Z-130502T1745Z/
PALM BEACH FL-
139 PM EDT THU MAY 2 2013

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN PALM BEACH COUNTY
WILL EXPIRE AT 145 PM EDT...

THUNDERSTORMS REMAIN IN THE AREA. FREQUENT LIGHTNING...GUSTY WINDS TO
40 MPH...VERY HEAVY RAINFALL AND SMALL HAIL ARE STILL POSSIBLE. STAY
TUNED TO NOAA WEATHER RADIO OR LOCAL MEDIA FOR THE LATEST UPDATES.

LAT...LON 2640 8006 2637 8006 2635 8006 2634 8011
      2634 8016 2648 8015 2647 8005 2643 8005
TIME...MOT...LOC 1740Z 212DEG 3KT 2637 8010

$$
KONARIK

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Miami, FL wrote its last area forecast discussion before this severe thunderstorm warning went out at May 2, 8:33 AM EDT, 4 hours 48 minutes earlier.

Area forecast discussion, May 2, 8:33 AM EDT, 4 hours 48 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MIAMI FL
833 AM EDT THU MAY 2 2013

.UPDATE...
12Z SOUNDING THIS MORNING SHOWS A PWAT OF 1.92 INCHES...WHICH IS
ABOUT 2 STANDARD DEVIATIONS ABOVE NORMAL. THE SOUNDING ALSO
INDICATED A 100 KT 200MB JET...AND SOUTH FLORIDA IS IN THE LEFT
EXIT REGION OF THIS JET. SCATTERED SHOWERS AND THUNDERSTORMS
WERE ONGOING OVER THE GULF AND ATLANTIC WATERS...AND A FEW WERE
MOVING INTO THE GULF COAST. AN UPPER LEVEL LOW OVER SOUTHEAST
LOUISIANA IS EXPECTED TO SLIDE TO THE SOUTHEAST THROUGH THE DAY
TODAY...WITH UPPER LEVEL DIVERGENCE INCREASING. HIGH RES MODELS
INDICATE SHOWERS AND THUNDERSTORMS INCREASING IN COVERAGE OVER THE
NEXT FEW HOURS...BECOMING WIDESPREAD BY LATE MORNING OR EARLY
AFTERNOON. SO BUMPED UP POPS TO 80-90 PERCENT AREAWIDE. ALSO
REDUCED TEMPERATURES DUE TO EXPECTED CLOUD COVER AND RAIN ACROSS
THE REGION. LOCALLY HEAVY RAINFALL IS POSSIBLE TODAY...AS STORMS
MOVE SLOWLY TO THE EAST AND NORTHEAST. THE OVERALL THREAT FOR
STRONG TO SEVERE STORMS SEEMS LIMITED WITH THE CLOUD COVER AND
EARLY START TO CONVECTION TODAY...BUT A FEW STRONG STORMS ARE
STILL POSSIBLE. SO WILL LEAVE MENTION OF GUSTY WINDS IN THE GRIDS.

&&

.PREV DISCUSSION... /ISSUED 757 AM EDT THU MAY 2 2013/

AVIATION...
A TROUGH OF LOW PRESSURE ACROSS THE REGION WILL CONTINUE TO BRING
SHOWER AND/OR THUNDERSTORMS MAINLY FROM LATE THIS MORNING AND INTO
THE EVENING HOURS OF THURSDAY. THERE IS A CHANCE OF AN EARLIER START
BASED ON CURRENT TRENDS WITH ACTIVITY ACROSS THE KEYS POTENTIALLY
PROPAGATING NORTH INTO THE REGION TOWARDS SUNRISE SO WILL BE
MONITORING THAT. THIS MEANS THAT ALTHOUGH VFR TO MVFR (FOR CEILINGS)
CONDITIONS ARE EXPECTED TO PREVAIL OVER THE NEXT 24 HOURS OR SO AT
THE TAF SITES, PERIODS WITH MIXED MVFR AND MAY BE EVEN IFR ARE
POSSIBLE WITH ANY STORMS AFFECTING THE TERMINALS, AND IN PARTICULAR
THE EAST COAST TERMINALS FROM AROUND NOON AND INTO THE EVENING HOURS
WITH THE CAVEAT MENTIONED EARLIER. ALSO PERIODS OF MVFR OR EVEN IFR
CEILINGS CANNOT BE RULED OUT EARLY THIS MORNING WITH LOW STRATUS
CLOUDS AT ANY OF THE TERMINALS. BUT GIVEN UNCERTAINTY WILL HANDLE
THOSE WITH AMENDMENTS AS NEEDED.

WINDS WILL REMAIN LIGHT FROM THE EAST OR VARIABLE THIS MORNING
BECOMING SE 8-13 KTS TODAY WITH A SSW SEA BREEZE DURING THE
AFTERNOON POSSIBLE AT APF. WINDS WILL BECOME LIGHT GENERALLY FROM
THE SE ONCE AGAIN TONIGHT.

PREV DISCUSSION... /ISSUED 410 AM EDT THU MAY 2 2013/

.WET WEATHER CONTINUES OVER SOUTH FLORIDA THROUGH EARLY THIS WEEKEND...
.SOME STRONG STORMS POSSIBLE TODAY OVER SOUTH FLORIDA...

SHORT TERM...
A TROUGH OF LOW PRESSURE OVER LAKE OKEECHOBEE REGION WILL REMAIN
NEARLY STATIONARY TODAY...AS A SURFACE LOW DEVELOPS IN THE CENTRAL
GULF OF MEXICO. THIS WEATHER PATTERN WILL KEEP THE WINDS OVER
SOUTH FLORIDA IN A SOUTH TO SOUTHWEST DIRECTION ALONG WITH DEEP
TROPICAL MOISTURE. SO WILL CONTINUE THE SCATTERED TO NUMEROUS
SHOWERS AND THUNDERSTORMS OVER SOUTH FLORIDA FOR TODAY ALONG WITH
THE HEAVY RAINFALL WORDING WITH EMPHASIS ON AFTERNOON AND EARLY
EVENING. BEST CHANCES FOR NORTHEAST PORTIONS OF COUNTY WARNING AREA
(CWA). BUT MONITORING EARLY ON ACTIVITY ACROSS THE KEYS AND
SOUTHEAST GULF AS SOME OF THE HIGH RES MODELS SUGGEST SOME OF THAT
COULD START AFFECTING SOUTHWEST COAST AND/OR SOUTHERN PORTIONS OF
CWA EARLIER IN THE MORNING.

AN MID TO UPPER LEVEL LOW OVER THE SOUTH CENTRAL GULF COAST STATES
WILL ALSO MOVE SOUTHEAST INTO THE NORTHEAST GULF OF MEXICO TODAY.
THIS WILL ALLOW FOR THE 500 MB TEMPS TO COOL OFF A BIT FROM AROUND
-11C THIS MORNING TO -12C TO -13C THIS AFTERNOON. THESE COLD 500 MB
TEMPS WILL ALLOW FOR SOME STRONG STORMS OVER SOUTH FLORIDA TODAY
DEPENDING HOW MUCH SURFACE HEATING WE END UP GETTING. ANY STORMS
THAT DO BECOME STRONG WILL BE CAPABLE OF PRODUCING GUSTY
WINDS...SMALL HAIL...AND FREQUENT LIGHTING STRIKES. BUT AGAIN THE
MAIN THREAT CONTINUES THE BE POTENTIAL FOR FLOODING.

THE STATIONARY FRONT WILL REMAIN NEARLY STATIONARY OVER THE LAKE
OKEECHOBEE REGION TONIGHT INTO FRIDAY...AS A SURFACE LOW MOVES
SLOWLY EAST TOWARDS SOUTH FLORIDA FROM THE CENTRAL GULF. AT THE SAME
TIME THE MID TO UPPER LEVEL LOW WILL ALSO SLOWLY DISSIPATE. THIS
WILL ALLOW FOR THE STEERING FLOW OVER SOUTH FLORIDA TO REMAIN LIGHT
FROM A SOUTH TO SOUTHWEST DIRECTION KEEPING THE DEEP TROPICAL
MOISTURE IN PLACE. SO WILL CONTINUE THE SCATTERED POPS TONIGHT OVER
SOUTH FLORIDA AND INCREASE THE POPS TO NUMEROUS OVER MOST OF SOUTH
FLORIDA ON FRIDAY...EXCEPT SCATTERED POPS OVER THE WEST COAST METRO
AREAS. AGAIN THE EMPHASIS BEING NE SECTIONS OF CWA AND NORTH WHERE
BEST LOW LEVEL CONVERGENCE WITH AFOREMENTIONED FRONTAL BOUNDARY WILL
BE FOUND ALONG WITH UPPER LEVEL FORCING ASSOCIATED WITH UPR LEVEL
LOW.

THE 500 MB TEMPS ON FRIDAY SHOULD BE A LITTLE BIT WARMER THAN
TODAY...DUE TO THE UPPER LEVEL LOW DISSIPATING OVER THE NORTHEAST
GULF OF MEXICO. HOWEVER...ANY STORMS THAT DO AFFECT SOUTH FLORIDA
TONIGHT INTO FRIDAY WILL BE CAPABLE OF PRODUCING HEAVY RAINFALL.
SO WILL CONTINUE TO MENTION THE HEAVY RAINFALL WORDING IN THE
ZONES FOR TONIGHT AND FRIDAY.

LONG TERM...
THE LOW WILL CONTINUE TO MOVE EAST OVER SOUTH FLORIDA ON SATURDAY
BEFORE MOVING INTO THE WESTERN ATLANTIC WATERS ON SUNDAY. THIS
WILL KEEP THE AREA IN THE DEEP TROPICAL MOISTURE ON SATURDAY...BEFORE
ALLOWING FOR SOME DRIER AIR TO WORK INTO THE AREA FROM THE WEST ON
SUNDAY. THEREFORE...THE POPS ON SATURDAY WILL BE IN THE CHANCE
RANGE OVER SOUTH FLORIDA WHILE ON SUNDAY THE POPS WILL BE IN THE
SLIGHT CHANCE RANGE.

FOR EARLY TO MIDDLE OF NEXT WEEK...A MID TO UPPER LEVEL LOW WILL
DEVELOP OVER THE TENNESSEE VALLEY AND MOVE SLOWLY EAST TOWARDS THE
MID ATLANTIC STATES. THIS WILL ALLOW FOR DRIER WEATHER TO CONTINUE
TO WORK INTO SOUTH FLORIDA FROM THE WEST. SO THE WEATHER SHOULD
REMAIN DRY OVER SOUTH FLORIDA FOR THE EARLY TO MIDDLE PART OF NEXT
WEEK.

MARINE...
THE WINDS OVER SOUTH FLORIDA TODAY INTO FRIDAY WILL BE FROM THE
SOUTH TO SOUTHEAST DIRECTION AT 10 KNOTS OR LESS...BEFORE SLOWLY
SWINGING TO A NORTHWEST DIRECTION BY LATE THIS WEEKEND AND
INCREASING SPEEDS TO 10 TO 15 KNOTS. AT THE SAME TIME...A SMALL
NORTHEAST SWELL OF 1 TO 3 FEET WILL CONTINUE TO AFFECT THE
ATLANTIC WATERS OF SOUTH FLORIDA LATE THIS WEEK INTO THIS
WEEKEND. THESE CONDITIONS WILL ALLOW FOR THE ATLANTIC SEAS TO
REMAIN BELOW 6 FEET TODAY INTO THIS WEEKEND...EXCEPT FOR THE PALM
BEACH WATERS WHERE THE SEAS COULD BUILD TO 6 FEET THIS WEEKEND.
FOR THE GULF SIDE...THE SEAS WILL REMAIN BELOW 6 FEET TODAY INTO
THIS WEEKEND. THE ONLY EXCEPTION IS THE OFFSHORE GULF WATERS WHERE
THE SEAS COULD BUILD TO 6 FEET BY THIS WEEKEND.

FIRE WEATHER...
THE RELATIVE HUMIDITIES WILL REMAIN ABOVE THE 35 PERCENT CRITICAL
VALUE EACH DAY OVER SOUTH FLORIDA THROUGH END OF THIS WEEK...DUE
TO THE TROPICAL MOISTURE REMAINING OVER THE AREA. SO NO PROBLEMS
ARE EXPECTED WITH THE FIRE WEATHER OVER SOUTH FLORIDA.

&&

.PRELIMINARY POINT TEMPS/POPS...
WEST PALM BEACH  81  70  83  70 / 90 50 70 50
FORT LAUDERDALE  81  72  84  72 / 90 50 60 50
MIAMI            81  71  85  71 / 90 50 60 40
NAPLES           78  68  84  68 / 90 40 50 30

&&

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

DISCUSSION/MARINE/FIRE...84/AK
AVIATION/RADAR...13/SI

Hazardous weather outlook, May 2, 12:55 PM EDT, 26 minutes before

HAZARDOUS WEATHER OUTLOOK FOR SOUTH FLORIDA
NATIONAL WEATHER SERVICE MIAMI FL
1255 PM EDT THU MAY 2 2013

AMZ610-630-650-651-670-671-FLZ063-066>075-168-172>174-GMZ656-657-676-
030200-
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-
1255 PM EDT THU MAY 2 2013

...ISOLATED STRONG-SEVERE THUNDERSTORMS AND LOCALLY HEAVY RAINFALL...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH FLORIDA.

.DAY ONE...THIS AFTERNOON AND TONIGHT

THUNDERSTORMS: A LINE OF STRONG TO SEVERE THUNDERSTORMS WILL MOVE
FROM THE GULF OF MEXICO ONSHORE THE MAINLAND MONROE COAST THEN
EAST AND INTO THE GREATER MIAMI METRO AREA. ISOLATED SEVERE WIND
GUSTS TO AROUND 60 MPH ARE POSSIBLE WITHIN THIS LINE OF STORMS.
NUMEROUS THUNDERSTORMS WILL CONTINUE TO IMPACT THE PALM BEACH
METRO, WITH NUMEROUS ACTIVITY DEVELOPING ACROSS THE ENTIRE EAST
COAST THROUGHOUT THE DAY.

WIND: STRONG WINDS OF 50 TO 60 MPH ARE POSSIBLE WITH THE
THUNDERSTORMS INTO EARLY THIS EVENING, WITH THE MAIN THREAT
ASSOCIATED WITH THE LINE OF STORMS FORECAST TO MOVE ACROSS
MAINLAND MONROE AND MIAMI-DADE COUNTIES.

FLOODING: TORRENTIAL DOWNPOURS FROM SLOW MOVING THUNDERSTORMS
MOVING ACROSS THE SAME AREA WILL PRODUCE LOCALIZED RAINFALL
AMOUNTS IN EXCESS OF 3 INCHES. THIS WILL NOT ONLY RESULT IN
A THREAT OF URBAN FLOODING, BUT THERE IS THE POTENTIAL FOR
LOCALIZED FLASH FLOODING WITH STREET CLOSURES AND THE POTENTIAL
FOR WATER ENTERING HOMES OR BUSINESSES. THIS THREAT EXISTS
ACROSS THE ENTIRE EAST COAST METRO AREA.

HAIL: SMALL HAIL IS POSSIBLE WITH THE THUNDERSTORMS THIS
AFTERNOON.

TORNADOES: AN ISOLATED TORNADO IS POSSIBLE NEAR THE COAST WHERE
THUNDERSTORMS INTERACT WITH SEA BREEZE BOUNDARIES.

WATERSPOUTS: THERE IS A SLIGHT RISK OF WATERSPOUTS OFF THE
SOUTHEAST FLORIDA COAST.

RIP CURRENTS: THERE IS A SLIGHT RISK OF RIP CURRENTS ALONG THE
ATLANTIC COAST.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

THERE WILL BE A GOOD CHANCE AND/OR LIKELIHOOD OF SHOWERS AND
THUNDERSTORMS AT LEAST THROUGH FRIDAY OR SATURDAY BEFORE A MORE
DEFINITE DRYING TREND BEGINS AGAIN ON SUNDAY. MAIN CONCERN WITH
ANY OF THIS ACTIVITY OVER THE NEXT FEW DAYS WILL BE FLOODING
POTENTIAL WITH THE BEST CHANCES AGAIN BEING PORTIONS OF SOUTH
FLORIDA FROM BROWARD NORTH TO PALM BEACH AND THE LAKE OKEECHOBEE
REGION.

THERE WILL ALSO BE AN INCREASING RISK OF RIP CURRENTS FOR LATE
THIS WEEKEND AND INTO EARLY NEXT WEEK FOR THE WEST COAST OF
FLORIDA WITH THE RISK OF RIP CURRENTS REMAINING LOW FOR THE EAST
COAST THROUGH EARLY NEXT WEEK.

.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.

GREGORIA

In the hours before

Local storm report, May 2, 10:19 AM EDT, 3 hours 2 minutes before

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE MIAMI FL
1019 AM EDT THU MAY 02 2013

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

1009 AM     WATER SPOUT      9 NNW CANAL POINT       26.98N  80.69W
05/02/2013                   AMZ610             FL   TRAINED SPOTTER

            TRAINED SPOTTER AND LOCK AND DAM OPERATER BOTH REPORTED
            MULTIPLE WATERSPOUTS WEST OF PORT MAYACA OVER LAKE
            OKEECHOBEE. INFORMATION RELAYED FROM WFO MLB

&&

CORRECTED REMARKS

EVENT NUMBER MFL1300075

AK

Special weather statement, May 2, 11:42 AM EDT, 1 hour 39 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
1142 AM EDT THU MAY 2 2013

FLZ069-070-075-021630-
COASTAL COLLIER COUNTY FL INLAND COLLIER COUNTY FL MAINLAND MONROE FL
1142 AM EDT THU MAY 2 2013

...A SIGNIFICANT WEATHER ADVISORY IS IN EFFECT FOR SOUTHWESTERN
COLLIER COUNTY...NORTHERN MAINLAND MONROE COUNTY...FOR FREQUENT TO
EXCESSIVE LIGHTNING AND GUSTY WINDS OF 45 TO 55 MPH...

* UNTIL 1230 PM EDT

* AT 1139 AM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  LINE OF STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 7 MILES
  SOUTHWEST OF MARCO ISLAND TO 21 MILES SOUTH OF CAPE ROMANO...AND
  MOVING EAST AT 30 MPH.

* THE LINE OF STORMS WILL AFFECT...
  MARCO ISLAND...
  KEY MARCO...
  GOODLAND...
  ROYAL PALM HAMMOCK...
  PORT OF THE ISLANDS...
  PICAYUNE STRAND STATE FOREST...
  AND SURROUNDING COMMUNITIES.

THE PRIMARY IMPACTS WILL BE FREQUENT TO EXCESSIVE LIGHTNING AND GUSTY
WINDS OF 45 TO 55 MPH. 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.

LAT...LON 2619 8142 2549 8093 2548 8120 2551 8122
      2554 8120 2556 8124 2568 8129 2574 8123
      2580 8129 2580 8136 2586 8142 2586 8148
      2588 8148 2583 8153 2589 8155 2589 8169
      2587 8166 2584 8168 2609 8181
TIME...MOT...LOC 1542Z 262DEG 27KT 2589 8180 2556 8156

KONARIK

Special weather statement, May 2, 12:11 PM EDT, 1 hour 10 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
1211 PM EDT THU MAY 2 2013

FLZ068-168-021645-
COASTAL PALM BEACH COUNTY FL METRO PALM BEACH COUNTY FL
1211 PM EDT THU MAY 2 2013

...A SIGNIFICANT WEATHER ADVISORY IS IN EFFECT FOR SOUTHEASTERN PALM
BEACH COUNTY...FOR THE DEVELOPMENT OF FUNNEL CLOUDS...

* UNTIL 1245 PM EDT

* AT 1210 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  STRONG THUNDERSTORM NEAR BOCA RATON...AND MOVING NORTH AT 5 MPH.

* THE STORM WILL AFFECT...
  MORIKAMI PARK...
  BOCA RATON EQUESTRIAN CENTER...
  VILLAGES OF ORIOLE...
  DELRAY BEACH...
  AND SURROUNDING COMMUNITIES.

FUNNEL CLOUDS OCCASIONALLY TOUCH DOWN AND PRODUCE TORNADOES. MOVE
INDOORS AND STAY AWAY FROM WINDOWS.

LAT...LON 2655 8004 2647 8005 2643 8005 2640 8006
      2637 8006 2636 8007 2636 8020 2658 8020
      2658 8003 2655 8003
TIME...MOT...LOC 1611Z 195DEG 5KT 2640 8010

KONARIK

Special weather statement, May 2, 12:34 PM EDT, 47 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
1234 PM EDT THU MAY 2 2013

FLZ067-068-168-021700-
COASTAL PALM BEACH COUNTY FL INLAND PALM BEACH COUNTY FL METRO PALM
BEACH COUNTY FL
1234 PM EDT THU MAY 2 2013

...A SIGNIFICANT WEATHER ADVISORY IS IN EFFECT FOR EASTERN PALM BEACH
COUNTY...FOR FREQUENT TO EXCESSIVE LIGHTNING AND THE DEVELOPMENT OF
FUNNEL CLOUDS...

* UNTIL 100 PM EDT

* AT 1232 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  LINE OF STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 5 MILES
  WEST OF JUPITER TO WHISPER WALK...AND MOVING NORTHEAST AT 10 MPH.

* THE LINE OF STORMS WILL AFFECT...
  ABERDEEN...
  GOLDEN LAKES...
  DELRAY BEACH...
  HAVERHILL...
  AND SURROUNDING COMMUNITIES.

THE MAIN IMPACT WILL BE FREQUENT TO EXCESSIVE LIGHTNING. LIGHTNING IS
THE NUMBER ONE WEATHER RELATED KILLER IN FLORIDA. TREES AND OPEN
SHELTERS FOUND IN PARKS...ON BEACHES OR GOLF COURSES OFFER NO
PROTECTION FROM THE DANGERS OF LIGHTNING. SEEK SHELTER IN A SAFE
BUILDING UNTIL THE STORM PASSES.

FUNNEL CLOUDS OCCASIONALLY TOUCH DOWN AND PRODUCE TORNADOES. MOVE
INDOORS AND STAY AWAY FROM WINDOWS.

LAT...LON 2655 8004 2635 8006 2634 8043 2696 8040
      2696 8015 2698 8014 2698 8008 2693 8006
      2680 8003 2663 8003 2660 8004 2659 8003
      2655 8003
TIME...MOT...LOC 1634Z 214DEG 10KT 2695 8017 2644 8017

KONARIK

Local storm report, May 2, 1:00 PM EDT, 21 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MIAMI FL
100 PM EDT THU MAY 02 2013

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

1254 PM     FLOOD            2 W DELRAY BEACH        26.46N  80.12W
05/02/2013                   PALM BEACH         FL   911 CALL CENTER

            DELRAY BEACH PD REPORTED WATER OVER THE ROAD AT LINTON
            BLVD AND MILITARY TRAIL AND AT LINTON BLVD AND CONGRESS
            AVE.

&&

EVENT NUMBER MFL1300076

AK

Special weather statement, May 2, 1:12 PM EDT, 9 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
112 PM EDT THU MAY 2 2013

FLZ068-168-021745-
COASTAL PALM BEACH COUNTY FL METRO PALM BEACH COUNTY FL
112 PM EDT THU MAY 2 2013

...A SIGNIFICANT WEATHER ADVISORY IS IN EFFECT FOR SOUTHEASTERN PALM
BEACH COUNTY...FOR THE DEVELOPMENT OF FUNNEL CLOUDS...

* UNTIL 145 PM EDT

* AT 109 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  STRONG THUNDERSTORM NEAR WHISPER WALK...AND MOVING NORTHEAST AT 5
  MPH.

* THE STORM WILL AFFECT...
  BOCA WEST...
  WHISPER WALK...
  BOCA RATON...
  FAU SOUTH CAMPUS...
  AND SURROUNDING COMMUNITIES.

FUNNEL CLOUDS OCCASIONALLY TOUCH DOWN AND PRODUCE TORNADOES. MOVE
INDOORS AND STAY AWAY FROM WINDOWS.

LAT...LON 2650 8005 2643 8005 2640 8006 2637 8006
      2636 8006 2633 8011 2633 8020 2657 8019
      2650 8004
TIME...MOT...LOC 1712Z 212DEG 3KT 2638 8016

KONARIK

The office that day

Everything else NWS Miami, FL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 2, 6:40 AM EDT	Special Marine Warning	MFL		95 min
May 2, 7:45 AM EDT	Special Marine Warning	MFL		60 min
May 2, 8:11 AM EDT	Special Marine Warning	MFL		64 min
May 2, 8:38 AM EDT	Special Marine Warning	MFL		67 min
May 2, 9:07 AM EDT	Special Marine Warning	MFL		53 min
May 2, 9:41 AM EDT	Special Marine Warning	MFL		64 min
May 2, 9:55 AM EDT	Special Marine Warning	MFL		65 min
May 2, 10:39 AM EDT	Special Marine Warning	MFL		66 min
May 2, 10:59 AM EDT	Special Marine Warning	MFL		61 min
May 2, 11:42 AM EDT	Special Weather Statement	MFL	Collier, Monroe	48 min
May 2, 11:49 AM EDT	Areal Flood Advisory	MFL	Palm Beach	116 min
May 2, 11:54 AM EDT	Special Marine Warning	MFL		66 min
May 2, 12:11 PM EDT	Special Weather Statement	MFL	Palm Beach	34 min
May 2, 12:15 PM EDT	Severe Thunderstorm Warning	MFL	Collier, Monroe	30 min
May 2, 12:29 PM EDT	Areal Flood Advisory	MFL	Palm Beach	2 hr
May 2, 12:34 PM EDT	Special Weather Statement	MFL	Palm Beach	26 min
May 2, 12:39 PM EDT	Severe Thunderstorm Warning	MFL	Collier, Monroe	51 min
May 2, 12:47 PM EDT	Special Marine Warning	MFL		58 min
May 2, 1:06 PM EDT	Flash Flood Warning	MFL	Palm Beach	6 hr
May 2, 1:09 PM EDT	Special Marine Warning	MFL		66 min
May 2, 1:12 PM EDT	Special Weather Statement	MFL	Palm Beach	33 min
May 2, 1:23 PM EDT	Special Marine Warning	MFL		67 min
May 2, 1:25 PM EDT	Special Weather Statement	MFL	Miami-Dade, Monroe	50 min
May 2, 1:39 PM EDT	Special Weather Statement	MFL	Broward	51 min
May 2, 1:52 PM EDT	Special Marine Warning	MFL		53 min
May 2, 1:59 PM EDT	Special Weather Statement	MFL	Broward	46 min
May 2, 2:48 PM EDT	Special Weather Statement	MFL	Broward	42 min
May 2, 3:01 PM EDT	Areal Flood Advisory	MFL	Broward, Palm Beach	119 min
May 2, 3:15 PM EDT	Special Marine Warning	MFL		60 min
May 2, 3:17 PM EDT	Special Weather Statement	MFL	Broward	28 min
May 2, 3:20 PM EDT	Special Marine Warning	MFL		55 min
May 2, 3:36 PM EDT	Special Weather Statement	MFL	Broward	24 min
May 2, 3:43 PM EDT	Special Weather Statement	MFL	Palm Beach	32 min
May 2, 3:56 PM EDT	Areal Flood Advisory	MFL	Broward, Miami-Dade, Palm Beach	5 hr
May 2, 4:01 PM EDT	Special Weather Statement	MFL	Broward	29 min
May 2, 4:09 PM EDT	Tornado Warning	MFL	Broward	66 min
May 2, 4:13 PM EDT	Special Marine Warning	MFL		62 min
May 2, 4:18 PM EDT	Special Marine Warning	MFL		57 min
May 2, 4:52 PM EDT	Small Craft Advisory for Hazardous Seas	MFL		24 hr
May 2, 5:12 PM EDT	Special Marine Warning	MFL		63 min
May 2, 5:59 PM EDT	Areal Flood Advisory	MFL	Broward, Palm Beach	3 hr
May 2, 6:12 PM EDT	Special Marine Warning	MFL		63 min
May 2, 6:57 PM EDT	Areal Flood Advisory	MFL	Palm Beach	4 hr
May 2, 7:17 PM EDT	Special Marine Warning	MFL		58 min

Nearby

Severe Thunderstorm Warnings in Florida, 2013 Every severe thunderstorm warning in 2013

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.