Alert archive / Florida / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 41, NWS Melbourne, FL

May 20, 2016Brevard County, Volusia County, Florida

NWS Melbourne, FL issued this severe thunderstorm warning at May 20, 2016, 2:15 PM EDT for Brevard County, Volusia County, Florida. It was in force for 30 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 20, 2016, 2:15 PM EDT (18:15 UTC)
Expired
May 20, 2016, 2:45 PM EDT
In force
30 min
Issued by
NWS Melbourne, FL
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Brevard County, FL, Volusia County, FL

The radar

The Melbourne radar (KMLB), 65 km from the middle of the area, began a volume at 18:17 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, 6.3 hours before the alert went out and 40 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, Cape Canaveral, FL at 12:00Z on 2016-05-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 499 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Cape Canaveral, FL at 12:00Z on 2016-05-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 45 square meters per square second.1939Sfc1 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
499 J/kg
Mixed-layer CIN
-112 J/kg
Mixed-layer LCL
964 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
45 m²/s²
0-3 km storm-relative helicity
83 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

As transmitted.

963 
WUUS52 KMLB 201815
SVRMLB
FLC009-127-201845-
/O.NEW.KMLB.SV.W.0041.160520T1815Z-160520T1845Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MELBOURNE FL
215 PM EDT FRI MAY 20 2016

THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN BREVARD COUNTY IN FLORIDA...
  SOUTHEASTERN VOLUSIA COUNTY IN EAST CENTRAL FLORIDA...

* UNTIL 245 PM EDT

* AT 214 PM EDT...A SEVERE THUNDERSTORM WAS LOCATED OVER OAK HILL...
  MOVING SOUTHEAST AT 35 MPH.

  HAZARD...60 MPH WIND GUSTS AND QUARTER SIZE HAIL. 

  SOURCE...RADAR INDICATED. 

  IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE 
           TO ROOFS...SIDING...AND TREES. 

* LOCATIONS IMPACTED INCLUDE...
  PORT ORANGE...TITUSVILLE...NEW SMYRNA BEACH...EDGEWATER AND OAK HILL. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 2902 8084 2860 8054 2846 8049 2844 8051
      2852 8091 2853 8094 2856 8093 2859 8094
      2862 8099 2868 8102 2912 8106
TIME...MOT...LOC 1814Z 298DEG 32KT 2888 8090 

HAIL...1.00IN
WIND...60MPH
 
$$

WEITLICH

The office that day

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

IssuedProductOfficeCountiesLasted
May 19, 10:40 PM EDTSpecial Marine WarningMLB65 min
May 19, 10:41 PM EDTSpecial Weather StatementMLBIndian River49 min
May 20, 1:30 AM EDTAreal Flood AdvisoryMLBMartin2 hr
May 20, 12:01 PM EDTSpecial Weather StatementMLBLake59 min
May 20, 12:56 PM EDTSpecial Weather StatementMLBLake, Orange, Seminole, Volusia64 min
May 20, 1:09 PM EDTSpecial Marine WarningMLB96 min
May 20, 1:55 PM EDTSpecial Weather StatementMLBBrevard, Osceola, Seminole, Volusia50 min
May 20, 2:03 PM EDTSpecial Marine WarningMLB117 min
May 20, 2:43 PM EDTSevere Thunderstorm WarningMLBBrevard47 min
May 20, 2:44 PM EDTSpecial Weather StatementMLBBrevard, Indian River, Osceola61 min
May 20, 3:44 PM EDTSpecial Weather StatementMLBIndian River, Martin, Okeechobee, Saint Lucie61 min
May 20, 4:13 PM EDTSpecial Marine WarningMLB2 hr
May 20, 4:42 PM EDTSpecial Weather StatementMLBIndian River, Saint Lucie63 min

Nearby

Severe Thunderstorm Warnings in Florida, 2016Every severe thunderstorm warning 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.