Alert archive / Florida / Tornado Warnings in 2018

Tornado Warning 9, NWS Melbourne, FL

May 27, 2018Okeechobee County, Florida

NWS Melbourne, FL issued this tornado warning at May 27, 2018, 6:01 PM EDT for Okeechobee County, 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: May 27, 2018, 6:01 PM EDT (22:01 UTC)
Expired: May 27, 2018, 6:30 PM EDT
In force: 29 min
Issued by: NWS Melbourne, FL
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

County Okeechobee County, FL

The radar

The Melbourne radar (KMLB), 88 km from the middle of the area, began a volume at 22:04 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, 10.0 hours before the alert went out and 130 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: 64 J/kg
Mixed-layer CIN: -39 J/kg
Mixed-layer LCL: 713 m above ground
0-6 km bulk shear: 12 kt
0-1 km storm-relative helicity: -85 m²/s²
0-3 km storm-relative helicity: -29 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

592 
WFUS52 KMLB 272201
TORMLB
FLC093-272230-
/O.NEW.KMLB.TO.W.0009.180527T2201Z-180527T2230Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Melbourne FL
601 PM EDT SUN MAY 27 2018

The National Weather Service in Melbourne has issued a

* Tornado Warning for...
  Northwestern Okeechobee County in east central Florida...

* Until 630 PM EDT.
    
* At 601 PM EDT, a severe thunderstorm capable of producing a tornado
  was located near Basinger, moving northeast at 20 mph.

  HAZARD...Tornado.

  SOURCE...Radar indicated rotation.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely.

* This dangerous storm will be near...
  Kissimmee Prarie Preserve around 630 PM EDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to an interior room on the lowest floor of a
sturdy building. Avoid windows. If you are outdoors, in a mobile
home, or in a vehicle, move to the closest substantial shelter and
protect yourself from flying debris.

&&

LAT...LON 2736 8104 2736 8105 2737 8105 2738 8107
      2739 8108 2738 8110 2738 8111 2742 8114
      2743 8114 2745 8115 2762 8111 2753 8086
      2734 8104
TIME...MOT...LOC 2201Z 209DEG 16KT 2742 8107 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

Smith

2 follow-up statements

554 
WWUS52 KMLB 272214
SVSMLB

Severe Weather Statement
National Weather Service Melbourne FL
614 PM EDT SUN MAY 27 2018

FLC093-272230-
/O.CON.KMLB.TO.W.0009.000000T0000Z-180527T2230Z/
Okeechobee FL-
614 PM EDT SUN MAY 27 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 630 PM EDT FOR
NORTHWESTERN OKEECHOBEE COUNTY...
    
At 613 PM EDT, a severe thunderstorm capable of producing a tornado
was located near Basinger, moving northeast at 20 mph.

HAZARD...Tornado.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

This dangerous storm will be near...
  Kissimmee Prarie Preserve around 630 PM EDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to an interior room on the lowest floor of a
sturdy building. Avoid windows. If you are outdoors, in a mobile
home, or in a vehicle, move to the closest substantial shelter and
protect yourself from flying debris.

&&

LAT...LON 2744 8114 2762 8111 2753 8086 2738 8102
TIME...MOT...LOC 2213Z 209DEG 16KT 2747 8104 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

Smith

700 
WWUS52 KMLB 272224
SVSMLB

Severe Weather Statement
National Weather Service Melbourne FL
624 PM EDT SUN MAY 27 2018

FLC093-272234-
/O.EXP.KMLB.TO.W.0009.000000T0000Z-180527T2230Z/
Okeechobee FL-
624 PM EDT SUN MAY 27 2018

...THE TORNADO WARNING FOR NORTHWESTERN OKEECHOBEE COUNTY WILL EXPIRE
AT 630 PM EDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning will be allowed to expire.

LAT...LON 2744 8114 2762 8111 2753 8086 2738 8102
TIME...MOT...LOC 2224Z 209DEG 16KT 2751 8102 

$$

Smith

The office that day

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

Issued	Product	Office	Counties	Lasted
May 27, 2:46 AM EDT	Beach Hazards Statement	MLB	Volusia	18 hr
May 27, 5:25 AM EDT	Special Weather Statement	MLB	Brevard, Indian River	50 min
May 27, 5:31 AM EDT	Special Marine Warning	MLB		59 min
May 27, 6:29 AM EDT	Special Marine Warning	MLB		61 min
May 27, 7:08 AM EDT	Special Marine Warning	MLB		52 min
May 27, 7:30 AM EDT	Special Marine Warning	MLB		60 min
May 27, 8:02 AM EDT	Special Marine Warning	MLB		58 min
May 27, 8:12 AM EDT	Lake Wind Advisory	MLB	Lake, Okeechobee, Orange, Osceola, Seminole, Volusia	13 hr
May 27, 11:19 AM EDT	Special Marine Warning	MLB		56 min
May 27, 2:02 PM EDT	Special Weather Statement	MLB	Okeechobee	58 min
May 27, 2:42 PM EDT	Special Weather Statement	MLB	Brevard, Indian River	63 min
May 27, 2:48 PM EDT	Special Marine Warning	MLB		87 min
May 27, 3:16 PM EDT	Special Marine Warning	MLB		59 min
May 27, 3:18 PM EDT	Special Weather Statement	MLB	Martin	27 min
May 27, 3:40 PM EDT	Special Marine Warning	MLB		50 min
May 27, 3:54 PM EDT	Special Weather Statement	MLB	Martin	36 min
May 27, 5:03 PM EDT	Special Weather Statement	MLB	Martin	57 min
May 27, 5:32 PM EDT	Severe Thunderstorm Warning	MLB	Martin	43 min
May 27, 5:58 PM EDT	Areal Flood Warning	MLB	Martin, Saint Lucie	3 hr
May 27, 6:15 PM EDT	Special Weather Statement	MLB	Martin	30 min

Nearby

Tornado Warnings in Florida, 2018 Every tornado warning in 2018 Tornadoes in 2018

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.