Alert archive / Florida / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 13, NWS Melbourne, FL

February 15, 2017Osceola County, Florida

NWS Melbourne, FL issued this severe thunderstorm warning at Feb 15, 2017, 5:04 PM EST for Osceola County, Florida. It was in force for 26 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: Feb 15, 2017, 5:04 PM EST (22:04 UTC)
Expired: Feb 15, 2017, 5:30 PM EST
In force: 26 min
Issued by: NWS Melbourne, FL
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Osceola County, FL

The radar

The Melbourne radar (KMLB), 55 km from the middle of the area, began a volume at 22:03 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, 10.1 hours before the alert went out and 69 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 932 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 112 m²/s²
0-3 km storm-relative helicity: 158 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

669 
WUUS52 KMLB 152204
SVRMLB
FLC097-152230-
/O.NEW.KMLB.SV.W.0013.170215T2204Z-170215T2230Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Melbourne FL
504 PM EST WED FEB 15 2017

The National Weather Service in Melbourne has issued a

* Severe Thunderstorm Warning for...
  Northeastern Osceola County in east central Florida...

* Until 530 PM EST

* At 504 PM EST, a severe thunderstorm was located over Osceola
  Heritage Park, or over Kissimmee, moving east at 50 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...
  Kissimmee, Saint Cloud, West Lake Toho, Buena Ventura Lakes and
  East Lake Toho.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

To report severe weather, contact your nearest law enforcement
agency. They will send your report to the National Weather Service
office in Melbourne.

&&

LAT...LON 2835 8100 2820 8099 2820 8145 2835 8146
TIME...MOT...LOC 2204Z 271DEG 44KT 2829 8137 

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

Cristaldi

1 follow-up statement

069 
WWUS52 KMLB 152219
SVSMLB

Severe Weather Statement
National Weather Service Melbourne FL
519 PM EST WED FEB 15 2017

FLC097-152230-
/O.CON.KMLB.SV.W.0013.000000T0000Z-170215T2230Z/
Osceola FL-
519 PM EST WED FEB 15 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM EST
FOR NORTHEASTERN OSCEOLA COUNTY...

At 518 PM EST, severe thunderstorms were located near Narcoossee, 
moving east at 50 mph.

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

SOURCE...Radar indicated. 

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

Locations impacted include...
Saint Cloud, East Lake Toho, Narcoossee, Alligator Lake and Pine
Grove.

A 57 MPH wind gust occurred with this cluster of storms at the 
Kissimmee Airport.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

To report severe weather contact your nearest law enforcement agency.
They will send your report to the National Weather Service office in
Melbourne.

&&

LAT...LON 2835 8100 2820 8099 2821 8120 2823 8130
      2829 8130 2835 8124
TIME...MOT...LOC 2218Z 271DEG 44KT 2829 8118 

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

Cristaldi

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 15, 3:36 AM EST	Lake Wind Advisory	MLB	Lake, Okeechobee, Orange, Osceola, Seminole, Volusia	15 hr
Feb 15, 3:37 PM EST	Severe Thunderstorm Warning	MLB	Lake	23 min
Feb 15, 3:40 PM EST	Special Marine Warning	MLB		35 min
Feb 15, 3:56 PM EST	Severe Thunderstorm Warning	MLB	Lake	34 min
Feb 15, 4:25 PM EST	Severe Thunderstorm Warning	MLB	Lake, Volusia	50 min
Feb 15, 4:28 PM EST	Special Weather Statement	MLB	Orange	47 min
Feb 15, 4:49 PM EST	Special Marine Warning	MLB		56 min
Feb 15, 5:30 PM EST	Severe Thunderstorm Warning	MLB	Brevard, Osceola	26 min
Feb 15, 5:55 PM EST	Special Weather Statement	MLB	Indian River	50 min
Feb 15, 6:00 PM EST	Special Weather Statement	MLB	Saint Lucie	30 min
Feb 15, 6:28 PM EST	Special Weather Statement	MLB	Saint Lucie	17 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.