Alert archive / Florida / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 28, NWS Melbourne, FL

April 14, 2016Okeechobee County, Osceola County, Florida

NWS Melbourne, FL issued this severe thunderstorm warning at Apr 14, 2016, 8:27 PM EDT for Okeechobee County, Osceola County, Florida. It was in force for 46 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: Apr 14, 2016, 8:27 PM EDT (00:27 UTC)
Expired: Apr 14, 2016, 9:13 PM EDT
In force: 46 min
Issued by: NWS Melbourne, FL
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Okeechobee County, FL, Osceola County, FL

The radar

The Melbourne radar (KMLB), 62 km from the middle of the area, began a volume at 00:30 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 00:00Z, 0.5 hours before the alert went out and 103 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: 714 J/kg
Mixed-layer CIN: -52 J/kg
Mixed-layer LCL: 901 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 0 m²/s²
0-3 km storm-relative helicity: 134 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 1.1

Open this sounding in Storm Lab

The text

As transmitted.

264 
WUUS52 KMLB 150027
SVRMLB
FLC093-097-150130-
/O.NEW.KMLB.SV.W.0028.160415T0027Z-160415T0130Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MELBOURNE FL
827 PM EDT THU APR 14 2016

THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN OKEECHOBEE COUNTY IN EAST CENTRAL FLORIDA...
  SOUTHEASTERN OSCEOLA COUNTY IN EAST CENTRAL FLORIDA...

* UNTIL 930 PM EDT

* AT 825 PM EDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR LAKE
  MARIAN... MOVING SOUTHEAST AT 20 MPH. OTHER STRONG TO SEVERE
  STORMS WERE APPROACHING THE KISSIMMEE RIVER FROM POLK COUNTY
  AROUND RIVER RANCH AND THE KISSIMMEE PRAIRIE RESERVE.

  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...
  LAKE MARIAN...KENANSVILLE...
  YEEHAW JUNCTION...FORT DRUM AND KISSIMMEE PRARIE PRESERVE. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PREPARE IMMEDIATELY FOR LARGE HAIL AND DAMAGING WINDS. PEOPLE OUTSIDE
SHOULD MOVE IMMEDIATELY TO SHELTER INSIDE A STRONG BUILDING. STAY
AWAY FROM WINDOWS.

&&

LAT...LON 2755 8120 2760 8114 2766 8113 2768 8115
      2771 8115 2773 8117 2776 8117 2784 8122
      2802 8114 2783 8088 2764 8087 2764 8083
      2745 8077
TIME...MOT...LOC 0025Z 307DEG 18KT 2787 8113 

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

LASCODY

1 follow-up statement

154 
WWUS52 KMLB 150113
SVSMLB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
913 PM EDT THU APR 14 2016

FLC093-097-150123-
/O.CAN.KMLB.SV.W.0028.000000T0000Z-160415T0130Z/
OKEECHOBEE FL-OSCEOLA FL-
913 PM EDT THU APR 14 2016

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN OKEECHOBEE 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 HEAVY RAIN AND
LIGHTNING ARE STILL OCCURRING WITH THIS THUNDERSTORM.

LAT...LON 2755 8120 2760 8114 2766 8113 2768 8115
      2771 8115 2773 8117 2776 8117 2784 8122
      2802 8114 2783 8088 2764 8087 2764 8083
      2745 8077
TIME...MOT...LOC 0107Z 307DEG 18KT 2773 8092 

$$

LASCODY

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 14, 8:33 PM EDT	Severe Thunderstorm Warning	MLB	Indian River	44 min
Apr 14, 9:29 PM EDT	Severe Thunderstorm Warning	MLB	Okeechobee, Saint Lucie	46 min
Apr 14, 10:35 PM EDT	Special Marine Warning	MLB		55 min
Apr 14, 10:37 PM EDT	Special Weather Statement	MLB	Saint Lucie	23 min
Apr 15, 3:59 AM EDT	Small Craft Advisory	MLB		4 days
Apr 15, 2:37 PM EDT	Special Weather Statement	MLB	Martin, Okeechobee, Saint Lucie	53 min
Apr 15, 2:49 PM EDT	Special Weather Statement	MLB	Indian River	56 min
Apr 15, 2:54 PM EDT	Special Marine Warning	MLB		51 min
Apr 15, 3:23 PM EDT	Special Weather Statement	MLB	Saint Lucie	67 min
Apr 15, 3:41 PM EDT	Severe Thunderstorm Warning	MLB	Saint Lucie	49 min
Apr 15, 3:51 PM EDT	Special Marine Warning	MLB		54 min
Apr 15, 4:09 PM EDT	Special Weather Statement	MLB	Osceola	51 min
Apr 15, 4:21 PM EDT	Coastal Flood Watch	MLB	Volusia	6 hr
Apr 15, 4:24 PM EDT	Special Marine Warning	MLB		66 min
Apr 15, 4:25 PM EDT	Special Weather Statement	MLB	Martin	50 min
Apr 15, 4:31 PM EDT	Special Weather Statement	MLB	Okeechobee	59 min
Apr 15, 4:37 PM EDT	Special Weather Statement	MLB	Saint Lucie	53 min
Apr 15, 4:39 PM EDT	Severe Thunderstorm Warning	MLB	Martin	36 min
Apr 15, 4:42 PM EDT	Severe Thunderstorm Warning	MLB	Saint Lucie	63 min
Apr 15, 4:46 PM EDT	Areal Flood Advisory	MLB	Saint Lucie	119 min
Apr 15, 4:55 PM EDT	Severe Thunderstorm Warning	MLB	Martin	35 min
Apr 15, 5:00 PM EDT	Special Marine Warning	MLB		60 min
Apr 15, 5:02 PM EDT	Severe Thunderstorm Warning	MLB	Indian River, Saint Lucie	40 min
Apr 15, 5:08 PM EDT	Severe Thunderstorm Warning	MLB	Martin, Saint Lucie	35 min
Apr 15, 5:20 PM EDT	Special Weather Statement	MLB	Indian River	55 min
Apr 15, 5:56 PM EDT	Special Weather Statement	MLB	Lake	64 min
Apr 15, 6:05 PM EDT	Areal Flood Advisory	MLB	Osceola	115 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.