Alert archive / Florida / Special Weather Statements in 2012

Special Weather Statement, NWS Melbourne, FL

December 12, 2012Brevard County, Florida

NWS Melbourne, FL issued this special weather statement at Dec 12, 2012, 1:21 AM EST for Brevard County, Florida. It was in force for 49 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
Dec 12, 2012, 1:21 AM EST (06:21 UTC)
Expired
Dec 12, 2012, 2:10 AM EST
In force
49 min
Issued by
NWS Melbourne, FL

County Brevard County, FL

The nearest sounding before it

Tampa Bay, FL (KTBW), launched 00:00Z, 6.4 hours before the alert went out and 178 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, Tampa Bay, FL at 00:00Z on 2012-12-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 562 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, Tampa Bay, FL at 00:00Z on 2012-12-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 11 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
562 J/kg
Mixed-layer CIN
-133 J/kg
Mixed-layer LCL
929 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
11 m²/s²
0-3 km storm-relative helicity
61 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

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

939 
WWUS82 KMLB 120621
SPSMLB

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
121 AM EST WED DEC 12 2012

FLZ047-120710-
SOUTHERN BREVARD COUNTY-
121 AM EST WED DEC 12 2012

...A SIGNIFICANT WEATHER ADVISORY IS IN EFFECT FOR STRONG WIND GUSTS 
BETWEEN 35 AND 40 MPH AND VERY HEAVY RAIN OVER SOUTHERN BREVARD 
COUNTY...

* UNTIL 210 AM EST.

AT 119 AM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
STORMS CAPABLE OF PRODUCING GUSTY WINDS AND VERY HEAVY RAIN 6 MILES 
SOUTHWEST OF PALM BAY...MOVING NORTHEAST AT 30 MPH.

LOCATIONS IN THE PATH OF THE STORMS WHICH MAY EXPERIENCE STRONG WINDS
INCLUDE PALM BAY...MELBOURNE AND INDIALANTIC.

THE PRIMARY THREAT WILL BE CLOUD TO GROUND LIGHTNING STRIKES AND
GUSTY WINDS OF 35 TO 40 MPH...WHICH CAN CAUSE UNSECURED OBJECTS TO 
BLOW AROUND. HEAVY RAINFALL WILL TEMPORARILY REDUCE VISIBILITY. SEEK 
SHELTER INDOORS UNTIL THE STORMS PASS.

LAT...LON 2782 8068 2782 8075 2794 8087 2818 8064
      2817 8064 2817 8063 2814 8061 2819 8063
      2822 8060 2807 8055 2806 8054 2805 8054
      2792 8048
TIME...MOT...LOC 0619Z 228DEG 27KT 2790 8072

$$

JP

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 11, 7:42 PM ESTAreal Flood AdvisoryMLBMartin108 min
Dec 11, 9:27 PM ESTAreal Flood AdvisoryMLBMartin, Saint Lucie2 hr
Dec 12, 4:12 PM ESTSpecial Weather StatementMLBIndian River48 min

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.