Alert archive / Florida / Special Weather Statements in 2012

Special Weather Statement, NWS Melbourne, FL

February 27, 2012Martin County, Florida

NWS Melbourne, FL issued this special weather statement at Feb 27, 2012, 2:01 PM EST for Martin County, Florida. It was in force for 44 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: Feb 27, 2012, 2:01 PM EST (19:01 UTC)
Expired: Feb 27, 2012, 2:45 PM EST
In force: 44 min
Issued by: NWS Melbourne, FL

County Martin County, FL

The radar

The Melbourne radar (KMLB), 99 km from the middle of the area, began a volume at 19:00 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

Cape Canaveral, FL (KXMR), launched 12:00Z, 7.0 hours before the alert went out and 140 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: 408 J/kg
Mixed-layer CIN: -5 J/kg
Mixed-layer LCL: 710 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 40 m²/s²
0-3 km storm-relative helicity: 66 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.7

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 Melbourne, FL wrote its last area forecast discussion before this special weather statement went out at Feb 27, 10:00 AM EST, 4 hours 1 minute earlier.

Area forecast discussion, Feb 27, 10:00 AM EST, 4 hours 1 minute before

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        The site you requested is temporarily down for maintenance or an unexpected outage.
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Hazardous weather outlook, Feb 27, 10:38 AM EST, 3 hours 23 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE MELBOURNE FL
1038 AM EST MON FEB 27 2012

AMZ550-552-555-570-572-575-FLZ041-044>047-053-054-058-059-064-141-
144-147-271800-
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-
1038 AM EST MON FEB 27 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL FLORIDA.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

.THUNDERSTORM IMPACT...
AN UPPER LEVEL DISTURBANCE OVER THE EASTERN GULF OF MEXICO WILL
PUSH ACROSS CENTRAL FLORIDA THIS AFTERNOON. CLOUDS AND PASSING
LIGHT TO MODERATE RAIN ACROSS NORTHERN SECTIONS WILL LIMIT DAYTIME
HEATING. HOWEVER...MORE BREAKS IN THE CLOUDS TO THE SOUTH WILL
INCREASE DAYTIME HEATING AND COUPLED WITH COOL MID LEVELS AND THE
DISTURBANCE...AFTERNOON STORM POTENTIAL WILL BE ENHANCED. AREAS NEAR
AND SOUTH OF METRO ORLANDO AND PORT CANAVERAL WILL BE MORE FAVORED
FOR STORMS...BUT STORM FORMATION WILL BE ALSO POSSIBLE TO THE NORTH
IN ANY AREAS WHERE THE CLOUDS MANAGE TO BREAK.

STORMS WILL PRODUCE HEAVY DOWNPOURS AND DANGEROUS CLOUD TO GROUND
LIGHTNING STRIKES. ADDITIONALLY...A FEW STRONGER STORMS MAY PRODUCE
DOWNBURST WINDS TO 50 MPH AND HAIL UP TO THE SIZE OF COINS. MOVE
INDOORS AT THE FIRST SIGN OF A DEVELOPING OR APPROACHING STORM.

.DENSE FOG/SMOKE IMPACT...
SKIES WILL CLEAR LATE TONIGHT AND WINDS WILL DIMINISH AS A HIGH
PRESSURE RIDGE OFF THE MID ATLANTIC COAST WEAKENS AND MOVES OVER
THE ATLANTIC. AREAS OF FOG ARE EXPECTED TO FORM LATE TONIGHT AND
CONTINUE THROUGH EARLY MORNING TUESDAY. THE FOG MAY BECOME DENSE
IN AREAS...ESPECIALLY IN LOCATIONS THAT RECEIVE RAIN TODAY.

.MARINE THUNDERSTORM GUST IMPACT...
SHOWERS AND A FEW STORMS WILL MOVE EAST AROUND 15 KNOTS ACROSS THE
INTRACOASTAL AND ATLANTIC WATERS THIS AFTERNOON. STORMS WILL BE
CAPABLE OF PRODUCE SURFACE WIND GUSTS TO 35 KNOTS...FREQUENT CLOUD
TO WATER LIGHTNING STRIKES...AND POSSIBLY A WATERSPOUT.

.WIND AND SEA IMPACT...
A MODERATE TO FRESH SOUTHEASTERLY BREEZE WILL GENERATE CHOPPY 4 TO
6 FOOT SEAS WITH DOMINANT PERIODS 7 SECONDS OR LESS. SMALL CRAFT
SHOULD EXERCISE CAUTION WHEN VENTURING INTO THE OPEN ATLANTIC
TODAY DUE TO THE ROUGH CONDITIONS.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY.
HAZARDOUS WEATHER IS NOT ANTICIPATED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...
SPOTTERS ARE REQUESTED TO MONITOR THE WEATHER AND SELF ACTIVATE
IF NEEDED.

BRAGAW/GLITTO

In the hours before

Special weather statement, Feb 27, 12:53 PM EST, 1 hour 8 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
1253 PM EST MON FEB 27 2012

FLZ147-271830-
NORTHERN BREVARD COUNTY-
1253 PM EST MON FEB 27 2012

...A SIGNIFICANT WEATHER ADVISORY IS IN EFFECT FOR STRONG WIND GUSTS
BETWEEN 45 AND 55 MPH OVER NORTHERN BREVARD COUNTY...

* UNTIL 130 PM EST.

AT 1251 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STORM CAPABLE OF PRODUCING STRONG WIND GUSTS OVER HAULOVER CANAL...
MOVING EAST AT 15 MPH.

LOCATIONS IN THE PATH OF THE STORM WHICH MAY EXPERIENCE STRONG WINDS
INCLUDE KLONDIKE BEACH AND MERRITT ISLAND WILDLIFE REFUGE.

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 2851 8055 2854 8073 2860 8073 2862 8079
      2856 8079 2857 8086 2876 8085 2866 8082
      2866 8079 2869 8079 2871 8075 2879 8084
      2879 8077 2871 8071 2868 8066 2879 8075
      2878 8071 2859 8057
TIME...MOT...LOC 1752Z 280DEG 13KT 2868 8076

52

Special weather statement, Feb 27, 2:01 PM EST, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
201 PM EST MON FEB 27 2012

FLZ058-059-064-271945-
MARTIN-OKEECHOBEE-ST. LUCIE-
201 PM EST MON FEB 27 2012

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

* UNTIL 245 PM EST.

AT 200 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STORM CAPABLE OF PRODUCING STRONG WINDS AND SMALL HAIL 5 MILES EAST
OF FOUR SEASONS ESTATES...MOVING EAST-SOUTHEAST AT 20 MPH.

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. HAIL UP TO THE SIZE OF COINS IS ALSO POSSIBLE.

LAT...LON 2721 8079 2736 8074 2731 8032 2701 8050
TIME...MOT...LOC 1900Z 287DEG 16KT 2725 8067

52

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 27, 12:53 PM EST	Special Weather Statement	MLB	Brevard	37 min
Feb 27, 12:55 PM EST	Special Marine Warning	MLB		42 min
Feb 27, 3:36 PM EST	Special Weather Statement	MLB	Indian River	84 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.