Alert archive / Florida / Special Weather Statements in 2012

Special Weather Statement, NWS Miami, FL

September 4, 2012Palm Beach County, Florida

NWS Miami, FL issued this special weather statement at Sep 4, 2012, 6:56 PM EDT for Palm Beach County, Florida. It was in force for 34 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: Sep 4, 2012, 6:56 PM EDT (22:56 UTC)
Expired: Sep 4, 2012, 7:30 PM EDT
In force: 34 min
Issued by: NWS Miami, FL

County Palm Beach County, FL

The radar

The Miami radar (KAMX), 107 km from the middle of the area, began a volume at 22:59 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

Miami, FL (KMFL), launched 12:00Z, 10.9 hours before the alert went out and 82 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: 2198 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 759 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: 61 m²/s²
Significant tornado parameter: 0.5
Supercell composite: 2.9

Open this sounding in Storm Lab

The text

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

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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 Miami, FL wrote its last area forecast discussion before this special weather statement went out at Sep 4, 2:27 PM EDT, 4 hours 29 minutes earlier.

Area forecast discussion, Sep 4, 2:27 PM EDT, 4 hours 29 minutes before

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Hazardous weather outlook, Sep 4, 7:57 AM EDT, 10 hours 59 minutes before

HAZARDOUS WEATHER OUTLOOK FOR SOUTH FLORIDA...UPDATED
NATIONAL WEATHER SERVICE MIAMI FL
757 AM EDT TUE SEP 4 2012

AMZ610-630-650-651-670-671-FLZ063-066>075-168-172>174-GMZ656-657-676-
050300-
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-
757 AM EDT TUE SEP 4 2012

...HEAVY RAINFALL POSSIBLE TODAY ALONG THE EAST COAST...
...FLOOD WARNING EAST CENTRAL PALM BEACH COUNTY CONTINUES...
...STRONG TO SEVERE THUNDERSTORMS POSSIBLE THIS AFTERNOON...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH FLORIDA.

.DAY ONE...TODAY AND TONIGHT

FLOODING: HEAVY RAINFALL THIS AFTERNOON OVER THE EAST COAST AREAS
COULD LEAD TO ADDITIONAL FLOODING CONCERNS DUE TO ALREADY
SATURATED GROUNDS FROM LAST WEEK.

THUNDERSTORMS: SCATTERED THUNDERSTORMS ARE EXPECTED MAINLY IN THE
INTERIOR AND EAST PORTIONS OF SOUTH FLORIDA TODAY. THE MAIN IMPACTS
FROM THESE STORMS WILL BE FREQUENT LIGHTNING STRIKES, LOCALLY
HEAVY RAIN AND HAIL.

WINDS: WIND GUSTS UP TO 45 TO 60 MPH WILL BE POSSIBLE WITH THE
STRONGEST STORMS THAT DEVELOP.

HAIL: DIME OR NICKEL SIZE HAIL WILL BE POSSIBLE WITH THE
STRONGEST STORMS.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

SCATTERED THUNDERSTORMS AFFECTING PRIMARILY THE INTERIOR AND EAST
CAN BE EXPECTED. THERE WILL ALSO BE AN INCREASE IN THE RISK OF RIP
CURRENTS ALONG THE EAST COAST BEACHES OF SOUTH FLORIDA THROUGH THE
WEEK AS SWELLS FROM TROPICAL STORM LESLIE MAY AFFECT THE ATLANTIC
COASTAL WATERS.

.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.

In the hours before

Special weather statement, Sep 4, 4:56 PM EDT, 2 hours before

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Special weather statement, Sep 4, 5:11 PM EDT, 1 hour 45 minutes before

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Special weather statement, Sep 4, 6:02 PM EDT, 54 minutes before

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Special weather statement, Sep 4, 6:05 PM EDT, 51 minutes before

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Local storm report, Sep 4, 6:17 PM EDT, 39 minutes before

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Special weather statement, Sep 4, 6:56 PM EDT, 0 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 4, 1:49 PM EDT	Special Weather Statement	MFL	Broward	26 min
Sep 4, 4:09 PM EDT	Special Weather Statement	MFL	Hendry	36 min
Sep 4, 4:54 PM EDT	Special Weather Statement	MFL	Broward	36 min
Sep 4, 4:56 PM EDT	Special Weather Statement	MFL	Hendry	34 min
Sep 4, 5:11 PM EDT	Special Weather Statement	MFL	Broward	34 min
Sep 4, 5:56 PM EDT	Special Marine Warning	MFL		64 min
Sep 4, 6:02 PM EDT	Special Weather Statement	MFL	Palm Beach	28 min
Sep 4, 6:05 PM EDT	Special Weather Statement	MFL	Broward	25 min
Sep 4, 6:23 PM EDT	Severe Thunderstorm Warning	MFL	Broward, Palm Beach	21 min
Sep 4, 7:05 PM EDT	Severe Thunderstorm Warning	MFL	Palm Beach	25 min
Sep 4, 7:38 PM EDT	Special Weather Statement	MFL	Palm Beach	37 min
Sep 4, 7:51 PM EDT	Special Marine Warning	MFL		54 min

Nearby

Special Weather Statements in Florida, 2012 Every 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.