Alert archive / Florida / Special Weather Statements in 2012

Special Weather Statement, NWS Melbourne, FL

May 22, 2012Seminole County, Florida

NWS Melbourne, FL issued this special weather statement at May 22, 2012, 11:03 PM EDT for Seminole County, Florida. It was in force for 42 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
May 22, 2012, 11:03 PM EDT (03:03 UTC)
Expired
May 22, 2012, 11:45 PM EDT
In force
42 min
Issued by
NWS Melbourne, FL

County Seminole County, FL

The radar

The Melbourne radar (KMLB), 86 km from the middle of the area, began a volume at 03:06 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

Jacksonville, FL (KJAX), launched 00:00Z, 3.1 hours before the alert went out and 202 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, Jacksonville, FL at 00:00Z on 2012-05-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 407 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, Jacksonville, FL at 00:00Z on 2012-05-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 77 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
407 J/kg
Mixed-layer CIN
-87 J/kg
Mixed-layer LCL
1926 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
77 m²/s²
0-3 km storm-relative helicity
103 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.5

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 May 22, 3:09 PM EDT, 7 hours 54 minutes earlier.

Area forecast discussion, May 22, 3:09 PM EDT, 7 hours 54 minutes before
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Hazardous weather outlook, May 22, 11:14 AM EDT, 11 hours 49 minutes before
HAZARDOUS WEATHER OUTLOOK...CORRECTED
NATIONAL WEATHER SERVICE MELBOURNE FL
1114 AM EDT TUE MAY 22 2012

AMZ550-552-555-570-572-575-FLZ041-044>047-053-054-058-059-064-141-
144-147-230315-
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-
1114 AM EDT TUE MAY 22 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL FLORIDA.

.DAY ONE...TODAY AND TONIGHT.

.THUNDERSTORM IMPACT...
THOUGH LOW LEVEL MOISTURE REMAINS LIMITED ACROSS THE REGION
TODAY...VERY WARM SURFACE TEMPERATURES AND COLD UPPER LEVEL
TEMPERATURES WILL LEAD TO A VERY UNSTABLE ATMOSPHERE THIS
AFTERNOON AND EVENING. THE DRY AIR WILL LIMIT COVERAGE OF STORMS
THROUGH THE DAY...THOUGH SLIGHTLY HIGHER MOISTURE ACROSS
OKEECHOBEE AND THE TREASURE COAST WILL LEAD TO SLIGHTLY HIGHER
COVERAGE.

SHOWERS AND STORMS ARE EXPECTED TO DEVELOP EARLY THIS AFTERNOON
ACROSS OKEECHOBEE...SAINT LUCIE AND MARTIN COUNTIES AS THE EAST
COAST SEA BREEZE INTERACTS WITH THE LAKE OKEECHOBEE BOUNDARY.
DEVELOPMENT OF SHOWERS AND STORMS FURTHER NORTH IS NOT EXPECTED
UNTIL THE LATE AFTERNOON OR EARLY EVENING WHEN A COLLISION BETWEEN
THE EAST AND WEST COAST SEA BREEZE BOUNDARIES OCCURS OVER THE
ORLANDO METRO. SHOWERS AND STORMS WILL GENERALLY MOVE TO THE EAST AT
10 TO 15 MPH.

THOUGH STORM COVERAGE WILL BE LIMITED TODAY...ANY STORMS THAT
INITIATE WILL BE CAPABLE OF BECOMING STRONG TO SEVERE AND
PRODUCING FREQUENT LIGHTNING STRIKES...GUSTY WINDS IN EXCESSIVE OF 50
MPH...AND COIN SIZED HAIL.

.MARINE THUNDERSTORM GUST IMPACT...
SHOWERS AND STORMS ARE EXPECTED TO DEVELOP ACROSS THE TREASURE
COAST AND OKEECHOBEE COUNTY BY EARLY AFTERNOON ALONG THE
INTERACTION OF THE EAST COAST AND LAKE OKEECHOBEE SEA BREEZES.
MORE ISOLATED ACTIVITY WILL DEVELOP FURTHER NORTH DURING THE LATE
AFTERNOON AND EARLY EVENING WITH THE COLLISION OF THE EAST AND
WEST COAST SEA BREEZES. SHOWERS AND STORMS TODAY ARE EXPECTED TO
MOVE TO THE EAST OVER THE INTRACOASTAL AND LOCAL ATLANTIC AT
AROUND 15 KNOTS.

.FIRE WEATHER IMPACT...
VERY WARM TEMPERATURES WILL LEAD TO LOW AFTERNOON RELATIVE
HUMIDITY VALUES OVER INTERIOR SECTIONS...MAINLY NEAR AND WEST OF
INTERSTATE 4. THIS WILL RESULT IN A HIGH FIRE DANGER THROUGH LATE
AFTERNOON.

.RIP CURRENT IMPACT...
EAST SWELLS IMPACTING THE BEACHES WILL PRODUCE DANGEROUS RIP
CURRENTS...ESPECIALLY ALONG PIERS AND JETTIES. LONGSHORE CURRENTS
WILL REMAIN STRONGER THAN NORMAL.

CHECK WITH THE LOCAL BEACH PATROL ABOUT SURF ZONE HAZARDS. ONLY SWIM
WITHIN SIGHT OF A LIFEGUARD AND NEVER SWIM ALONE.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY.
DRIER AIR WILL KEEP HIGHEST STORM CHANCES CONFINED TO AROUND LAKE
OKEECHOBEE AND THE TREASURE COAST THROUGH MIDWEEK. INCREASING
CHANCES FOR STORMS SHOULD GRADUALLY SHIFT NORTHWARD DURING THE
LATE PART OF THE WEEK AND INTO THE WEEKEND.

A LINGERING LONG PERIOD SWELL WILL KEEP AN ELEVATED RISK FOR RIP
CURRENTS THIS WEEK.

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

SEDLOCK/MOSES

Nearby

Special Weather Statements in Florida, 2012Every 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.