Alert archive / Florida / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 48, NWS Melbourne, FL

July 8, 2017Brevard County, Orange County, Osceola County, Florida

NWS Melbourne, FL issued this severe thunderstorm warning at Jul 8, 2017, 3:34 PM EDT for Brevard County, Orange County, Osceola County, Florida. It was in force for 56 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: Jul 8, 2017, 3:34 PM EDT (19:34 UTC)
Expired: Jul 8, 2017, 4:30 PM EDT
In force: 56 min
Issued by: NWS Melbourne, FL
Area: Storm-based polygon
Hail: 0.88 in
Wind: 60.0 mph

Counties Brevard County, FL, Orange County, FL, Osceola County, FL

The radar

The Melbourne radar (KMLB), 40 km from the middle of the area, began a volume at 19:35 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, 7.6 hours before the alert went out and 53 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: 1453 J/kg
Mixed-layer CIN: -34 J/kg
Mixed-layer LCL: 950 m above ground
0-6 km bulk shear: 7 kt
0-1 km storm-relative helicity: -4 m²/s²
0-3 km storm-relative helicity: -2 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

947 
WUUS52 KMLB 081934
SVRMLB
FLC009-095-097-082030-
/O.NEW.KMLB.SV.W.0048.170708T1934Z-170708T2030Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Melbourne FL
334 PM EDT SAT JUL 8 2017

The National Weather Service in Melbourne has issued a

* Severe Thunderstorm Warning for...
  West central Brevard County in Florida...
  Southeastern Orange County in east central Florida...
  Northeastern Osceola County in east central Florida...

* Until 430 PM EDT

* At 333 PM EDT, a severe thunderstorm was located near Lone Cabbage
  Fish Camp, moving southeast at 20 mph.

  HAZARD...60 mph wind gusts and nickel size hail. 

  SOURCE...Radar indicated. 

  IMPACT...Expect damage to roofs, siding, and trees. 

* Locations impacted include...
  Wedgefield, Lone Cabbage Fish Camp, Canaveral Groves and Canaveral
  Acres.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 2821 8116 2847 8108 2845 8082 2814 8080
TIME...MOT...LOC 1933Z 294DEG 23KT 2834 8096 

HAIL...0.88IN
WIND...60MPH
 
$$
DWS

1 follow-up statement

427 
WWUS52 KMLB 081954
SVSMLB

Severe Weather Statement
National Weather Service Melbourne FL
354 PM EDT SAT JUL 8 2017

FLC009-095-097-082030-
/O.CON.KMLB.SV.W.0048.000000T0000Z-170708T2030Z/
Brevard FL-Orange FL-Osceola FL-
354 PM EDT SAT JUL 8 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 430 PM EDT
FOR WEST CENTRAL BREVARD...SOUTHEASTERN ORANGE AND NORTHEASTERN
OSCEOLA COUNTIES...

At 352 PM EDT, a cluster of strong to severe thunderstorms was 
located near Lone Cabbage Fish Camp, moving east at 10 to 15 mph. 
Although the storms have recently decreased somewhat, they are still 
capable of wind gusts approaching 60 mph. 

HAZARD...60 mph wind gusts and penny size hail. 

SOURCE...Radar indicated. 

IMPACT...Expect damage to roofs, siding, and trees. 

Locations impacted include...
Wedgefield, Lone Cabbage Fish Camp, Canaveral Groves and Canaveral
Acres.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Continuous cloud to ground lightning is occurring with these storms.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.

&&

LAT...LON 2821 8116 2847 8108 2845 8082 2814 8080
TIME...MOT...LOC 1952Z 289DEG 11KT 2833 8091 

HAIL...0.75IN
WIND...60MPH
 
$$

DWS

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 7, 8:10 PM EDT	Special Weather Statement	MLB	Orange	65 min
Jul 7, 8:24 PM EDT	Tornado Warning	MLB	Orange	38 min
Jul 7, 8:27 PM EDT	Tornado Warning	MLB	Osceola	18 min
Jul 7, 9:14 PM EDT	Special Weather Statement	MLB	Seminole	61 min
Jul 8, 12:48 PM EDT	Special Weather Statement	MLB	Lake	27 min
Jul 8, 1:21 PM EDT	Special Weather Statement	MLB	Orange	24 min
Jul 8, 1:56 PM EDT	Special Weather Statement	MLB	Seminole, Volusia	49 min
Jul 8, 3:07 PM EDT	Areal Flood Advisory	MLB	Brevard, Orange, Volusia	83 min
Jul 8, 3:12 PM EDT	Special Weather Statement	MLB	Seminole	33 min
Jul 8, 3:18 PM EDT	Special Marine Warning	MLB		42 min
Jul 8, 3:23 PM EDT	Special Weather Statement	MLB	Seminole	22 min
Jul 8, 3:46 PM EDT	Special Weather Statement	MLB	Osceola	59 min
Jul 8, 4:16 PM EDT	Special Marine Warning	MLB		44 min
Jul 8, 4:18 PM EDT	Special Weather Statement	MLB	Brevard	42 min
Jul 8, 4:46 PM EDT	Special Weather Statement	MLB	Osceola	44 min

Nearby

Severe Thunderstorm Warnings in Florida, 2017 Every severe thunderstorm warning in 2017

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.