Alert archive / Florida / Special Weather Statements in 2016

Special Weather Statement, NWS Melbourne, FL

May 18, 2016Martin County, Florida

NWS Melbourne, FL issued this special weather statement at May 18, 2016, 3:21 PM EDT for Martin County, Florida. It was in force for 54 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 18, 2016, 3:21 PM EDT (19:21 UTC)
Expired: May 18, 2016, 4:15 PM EDT
In force: 54 min
Issued by: NWS Melbourne, FL

County Martin County, FL

The radar

The Melbourne radar (KMLB), 123 km from the middle of the area, began a volume at 19:23 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, 7.4 hours before the alert went out and 138 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: 619 J/kg
Mixed-layer CIN: -150 J/kg
Mixed-layer LCL: 1096 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 59 m²/s²
0-3 km storm-relative helicity: 166 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.6

Open this sounding in Storm Lab

The text

As transmitted.

704 
WWUS82 KMLB 181921
SPSMLB

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
321 PM EDT WED MAY 18 2016
 
FLZ059-064-182015-
MARTIN FL-ST. LUCIE FL-
321 PM EDT WED MAY 18 2016

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN ST. LUCIE AND MARTIN
COUNTIES UNTIL 420 PM EDT...

AT 319 PM EDT...DOPPLER RADAR WAS TRACKING A LINE OF STRONG
LIGHTNING STORMS ALONG A LINE EXTENDING FROM NEAR SAINT LUCIE
NUCLEAR POWER PLANT TO NEAR PORT MAYACA MOVING EAST AT 20 TO 25 MPH.

WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH THESE STORMS.

LOCATIONS IMPACTED INCLUDE...
PORT SAINT LUCIE...FORT PIERCE...STUART AND INDIANTOWN. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THE PRIMARY THREATS WILL BE CLOUD TO GROUND LIGHTNING AND STRONG WIND
GUSTS...WHICH CAN CAUSE UNSECURED OBJECTS TO BLOW AROUND...SNAP TREE
LIMBS...CAUSE POWER OUTAGES OR CAPSIZE SMALL BOATS. HEAVY RAINFALL
WILL TEMPORARILY REDUCE VISIBILITY. SEEK SHELTER INDOORS UNTIL THE
STORMS PASS.

BOATERS SHOULD BE AWARE THAT STRONG WIND GUSTS SOMETIMES OCCUR WELL
AWAY FROM THE HEAVY RAIN AND LIGHTNING ASSOCIATED WITH STORMS.

HEAVY RAINFALL IS ALSO OCCURRING WITH THESE STORMS...WHICH WILL
REDUCE VISIBILITY AND MAY LEAD TO TEMPORARY FLOODING OF LOW LYING AND
POOR DRAINAGE AREAS. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

LIGHTNING CAN STRIKE SEVERAL MILES AWAY FROM A THUNDERSTORM. SEEK
SHELTER INSIDE A BUILDING OR VEHICLE. OPEN SHELTERS FOUND IN
PARKS... ON BEACHES OR GOLF COURSES OFFER NO PROTECTION FROM THE
DANGERS OF LIGHTNING.

&&

LAT...LON 2697 8008 2697 8014 2696 8015 2696 8061
      2714 8068 2747 8024 2707 8008
TIME...MOT...LOC 1919Z 322DEG 17KT 2735 8017 2702 8061 

$$

PENDERGRAST

The office that day

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

Issued	Product	Office	Counties	Lasted
May 17, 8:28 PM EDT	Special Weather Statement	MLB	Brevard, Indian River, Orange, Osceola, Seminole	92 min
May 17, 9:05 PM EDT	Special Marine Warning	MLB		85 min
May 17, 11:01 PM EDT	Areal Flood Warning	MLB	Indian River, Saint Lucie	6 hr
May 17, 11:10 PM EDT	Special Weather Statement	MLB	Martin	50 min
May 17, 11:49 PM EDT	Special Weather Statement	MLB	Martin	41 min
May 17, 11:56 PM EDT	Special Marine Warning	MLB		94 min
May 18, 4:00 AM EDT	Flood Watch	MLB	Okeechobee	17 hr
May 18, 2:31 PM EDT	Special Weather Statement	MLB	Martin, Okeechobee, Saint Lucie	59 min
May 18, 2:37 PM EDT	Special Marine Warning	MLB		113 min
May 18, 4:15 PM EDT	Special Weather Statement	MLB	Indian River	45 min

Nearby

Special Weather Statements in Florida, 2016 Every special weather statement in 2016

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.