Alert archive / Florida / Special Weather Statements in 2015

Special Weather Statement, NWS Miami, FL

April 29, 2015Collier County, Florida

NWS Miami, FL issued this special weather statement at Apr 29, 2015, 3:39 AM EDT for Collier County, Florida. It was in force for 51 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
Apr 29, 2015, 3:39 AM EDT (07:39 UTC)
Expired
Apr 29, 2015, 4:30 AM EDT
In force
51 min
Issued by
NWS Miami, FL

County Collier County, FL

The radar

The Miami radar (KAMX), 128 km from the middle of the area, began a volume at 07:42 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

Miami, FL (KMFL), launched 00:00Z, 7.7 hours before the alert went out and 135 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-pSkew-T log-p diagram, Miami, FL at 00:00Z on 2015-04-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 645 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Miami, FL at 00:00Z on 2015-04-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 190 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
645 J/kg
Mixed-layer CIN
-22 J/kg
Mixed-layer LCL
691 m above ground
0-6 km bulk shear
51 kt
0-1 km storm-relative helicity
190 m²/s²
0-3 km storm-relative helicity
273 m²/s²
Significant tornado parameter
0.9
Supercell composite
5.3

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 Apr 29, 3:32 AM EDT, 7 minutes earlier.

Area forecast discussion, Apr 29, 3:32 AM EDT, 7 minutes before
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Hazardous weather outlook, Apr 28, 8:33 PM EDT, 7 hours 6 minutes before
HAZARDOUS WEATHER OUTLOOK FOR SOUTH FLORIDA
NATIONAL WEATHER SERVICE MIAMI FL
833 PM EDT TUE APR 28 2015

AMZ610-630-650-651-670-671-FLZ063-066>075-168-172>174-GMZ656-657-676-
291245-
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-
833 PM EDT TUE APR 28 2015

...FEW THUNDERSTORMS WITH GUSTY WINDS POSSIBLE OVERNIGHT...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH FLORIDA.

.DAY ONE...TONIGHT

THUNDERSTORMS: ANOTHER ROUND OF THUNDERSTORMS IS POSSIBLE
OVERNIGHT ACROSS SOUTH FLORIDA...MOVING ONSHORE THE GULF COAST
SHORTLY AFTER MIDNIGHT...THEN SPREADING EASTWARD OVERNIGHT.

WIND: THUNDERSTORMS COULD CONTAIN GUSTY WINDS WITH A MARGINAL RISK
OF SEVERE WIND GUSTS OF AROUND 60 MPH ALONG THE GULF COAST. GUSTY
WINDS OF 40 TO 50 MPH ARE POSSIBLE ELSEWHERE.

WATERSPOUTS: THERE IS A RISK OF WATERSPOUTS ACROSS THE GULF
WATERS OVERNIGHT.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

THUNDERSTORMS ARE LIKELY WEDNESDAY AND SEVERE THUNDERSTORMS CANNOT
BE RULED OUT.

AN ELEVATED RISK FOR RIP CURRENTS EXISTS FOR THE GULF BEACHES
WEDNESDAY AND THURSDAY. A SMALL CRAFT ADVISORY MAY BE NECESSARY
ACROSS THE ATLANTIC WATERS ON WEDNESDAY.

.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, Apr 28, 11:14 PM EDT, 4 hours 25 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MIAMI FL
1114 PM EDT TUE APR 28 2015

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

1236 PM     WATER SPOUT      9 NNW CANAL POINT       26.99N  80.66W
04/28/2015                   AMZ610             FL   STORM CHASER

            PHOTO DEPICTS WATER SPOUT ABOUT 3 MILES WEST OF PORT
            MAYACA. FUNNEL WAS ON WATER FOR ABOUT 2 MINUTES.

&&

EVENT NUMBER MFL1500051

KONARIK
Special weather statement, Apr 29, 3:13 AM EDT, 26 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
313 AM EDT WED APR 29 2015

FLZ174-290800-
FAR SOUTH MIAMI-DADE COUNTY FL-
313 AM EDT WED APR 29 2015

...SIGNIFICANT WEATHER ADVISORY FOR THE DEVELOPMENT OF FUNNEL CLOUDS
FOR SOUTHWESTERN MIAMI-DADE COUNTY UNTIL 400 AM EDT...

* AT 313 AM EDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM
  WITH ROTATION...CAPABLE OF PRODUCING A FUNNEL CLOUD NEAR
  FLAMINGO...OR NEAR FLAMINGO...MOVING NORTHEAST AT 15 MPH.

* LOCATIONS IMPACTED INCLUDE...
  EVERGLADES NATIONAL PARK.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS ACTIVITY WAS ALSO DEVELOPING IN AN ENVIRONMENT FAVORABLE FOR THE
FORMATION OF FUNNEL CLOUDS. STAY TUNED TO NOAA WEATHER RADIO AND
LOCAL MEDIA FOR ADDITIONAL UPDATES AND POSSIBLE WARNINGS.

FOR ADDITIONAL INFORMATION VISIT THE MIAMI NATIONAL WEATHER SERVICE
WEBSITE AT WWW.WEATHER.GOV/MIAMI. FOR INFORMATION IN SPANISH, VISIT
OUR WEBSITE AT WWW.WEATHER.GOV/MIAMI/ESPANOL.

&&

LAT...LON 2519 8080 2519 8078 2520 8081 2522 8081
      2525 8086 2539 8075 2533 8050 2520 8072
      2521 8074 2519 8075 2519 8073 2518 8076
      2517 8077
TIME...MOT...LOC 0713Z 224DEG 12KT 2521 8086

KONARIK
Special weather statement, Apr 29, 3:39 AM EDT, 0 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Apr 29, 3:04 AM EDTSpecial Marine WarningMFL41 min
Apr 29, 3:13 AM EDTSpecial Weather StatementMFLMiami-Dade47 min
Apr 29, 3:42 AM EDTSpecial Marine WarningMFL33 min
Apr 29, 4:02 AM EDTSpecial Weather StatementMFLCollier43 min
Apr 29, 4:05 AM EDTSpecial Weather StatementMFLMiami-Dade40 min
Apr 29, 4:07 AM EDTSpecial Marine WarningMFL53 min
Apr 29, 4:49 AM EDTSpecial Marine WarningMFL41 min
Apr 29, 4:53 AM EDTAreal Flood AdvisoryMFLBroward3 hr
Apr 29, 4:56 AM EDTSpecial Marine WarningMFL34 min
Apr 29, 5:09 AM EDTSpecial Marine WarningMFL51 min
Apr 29, 5:28 AM EDTSpecial Weather StatementMFLMiami-Dade47 min
Apr 29, 5:37 AM EDTSpecial Marine WarningMFL53 min
Apr 29, 6:19 AM EDTSpecial Weather StatementMFLMiami-Dade41 min
Apr 29, 6:30 AM EDTSpecial Marine WarningMFL60 min
Apr 29, 7:13 AM EDTSpecial Marine WarningMFL2 hr
Apr 29, 6:43 PM EDTSpecial Weather StatementMFLMartin32 min

Nearby

Special Weather Statements in Florida, 2015Every special weather statement in 2015

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.