Alert archive / Florida / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 48, NWS Melbourne, FL

June 18, 20164 counties in Florida

NWS Melbourne, FL issued this severe thunderstorm warning at Jun 18, 2016, 4:29 PM EDT for 4 counties in Florida. It was in force for 29 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: Jun 18, 2016, 4:29 PM EDT (20:29 UTC)
Expired: Jun 18, 2016, 4:58 PM EDT
In force: 29 min
Issued by: NWS Melbourne, FL
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Indian River County, FL, Okeechobee County, FL, Osceola County, FL, Saint Lucie County, FL

The radar

The Melbourne radar (KMLB), 50 km from the middle of the area, began a volume at 20:31 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, 8.5 hours before the alert went out and 92 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: 1068 J/kg
Mixed-layer CIN: -60 J/kg
Mixed-layer LCL: 1030 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 113 m²/s²
0-3 km storm-relative helicity: 112 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

927 
WUUS52 KMLB 182029
SVRMLB
FLC061-093-097-111-182115-
/O.NEW.KMLB.SV.W.0048.160618T2029Z-160618T2115Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MELBOURNE FL
429 PM EDT SAT JUN 18 2016

THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHWESTERN ST. LUCIE COUNTY IN EAST CENTRAL FLORIDA...
  NORTHEASTERN OKEECHOBEE COUNTY IN EAST CENTRAL FLORIDA...
  SOUTHWESTERN INDIAN RIVER COUNTY IN EAST CENTRAL FLORIDA...
  SOUTHEASTERN OSCEOLA COUNTY IN EAST CENTRAL FLORIDA...

* UNTIL 515 PM EDT

* AT 428 PM EDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR YEEHAW
  JUNCTION...MOVING EAST TO SOUTHEAST AT 15 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...
  BLUE CYPRESS LAKE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 2743 8062 2766 8101 2779 8097 2783 8091
      2782 8088 2782 8085 2770 8053
TIME...MOT...LOC 2028Z 290DEG 12KT 2771 8085 

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

LASCODY

1 follow-up statement

812 
WWUS52 KMLB 182058
SVSMLB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
458 PM EDT SAT JUN 18 2016

FLC061-093-097-111-182108-
/O.CAN.KMLB.SV.W.0048.000000T0000Z-160618T2115Z/
ST. LUCIE FL-OKEECHOBEE FL-INDIAN RIVER FL-OSCEOLA FL-
458 PM EDT SAT JUN 18 2016

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN ST. LUCIE...
NORTHEASTERN OKEECHOBEE...SOUTHWESTERN INDIAN RIVER AND SOUTHEASTERN
OSCEOLA COUNTIES IS CANCELLED...
                
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSE AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
THEREFORE THE WARNING HAS BEEN CANCELLED.  HOWEVER GUSTY WINDS ARE
STILL POSSIBLE WITH THIS THUNDERSTORM.

LAT...LON 2743 8062 2766 8101 2779 8097 2783 8091
      2782 8088 2782 8085 2770 8053
TIME...MOT...LOC 2057Z 290DEG 12KT 2768 8074 

$$

WEITLICH

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 18, 4:20 AM EDT	Small Craft Advisory	MLB		58 hr
Jun 18, 2:06 PM EDT	Special Weather Statement	MLB	Volusia	39 min
Jun 18, 2:35 PM EDT	Special Weather Statement	MLB	Volusia	55 min
Jun 18, 3:33 PM EDT	Special Weather Statement	MLB	Volusia	57 min
Jun 18, 3:46 PM EDT	Special Marine Warning	MLB		59 min
Jun 18, 3:49 PM EDT	Special Weather Statement	MLB	Indian River	41 min
Jun 18, 4:03 PM EDT	Special Weather Statement	MLB	Orange, Seminole	57 min
Jun 18, 4:06 PM EDT	Special Marine Warning	MLB		84 min
Jun 18, 4:09 PM EDT	Severe Thunderstorm Warning	MLB	Brevard	36 min
Jun 18, 4:21 PM EDT	Special Weather Statement	MLB	Osceola	39 min
Jun 18, 4:50 PM EDT	Special Weather Statement	MLB	Saint Lucie	40 min
Jun 18, 4:52 PM EDT	Special Marine Warning	MLB		83 min
Jun 18, 5:00 PM EDT	Special Weather Statement	MLB	Osceola	45 min
Jun 18, 5:13 PM EDT	Special Weather Statement	MLB	Brevard	62 min
Jun 18, 5:20 PM EDT	Special Marine Warning	MLB		115 min
Jun 18, 5:20 PM EDT	Severe Thunderstorm Warning	MLB	Brevard, Indian River	40 min

Nearby

Severe Thunderstorm Warnings in Florida, 2016 Every 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.