Alert archive / Florida / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 3, NWS Melbourne, FL

January 15, 2016Martin County, Florida

NWS Melbourne, FL issued this severe thunderstorm warning at Jan 15, 2016, 12:59 PM EST for Martin County, Florida. It was in force for 31 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: Jan 15, 2016, 12:59 PM EST (17:59 UTC)
Expired: Jan 15, 2016, 1:30 PM EST
In force: 31 min
Issued by: NWS Melbourne, FL
Area: Storm-based polygon
Tornado: Possible
Hail: 0.75 in
Wind: 60.0 mph

County Martin County, FL

The radar

The Melbourne radar (KMLB), 113 km from the middle of the area, began a volume at 18:03 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jan 15, 10:35 AM EST	Tornado Watch	SPC	6 hr

The nearest sounding before it

Miami, FL (KMFL), launched 12:00Z, 6.0 hours before the alert went out and 145 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: 247 J/kg
Mixed-layer CIN: -14 J/kg
Mixed-layer LCL: 756 m above ground
0-6 km bulk shear: 71 kt
0-1 km storm-relative helicity: 297 m²/s²
0-3 km storm-relative helicity: 386 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 1.7

Open this sounding in Storm Lab

The text

As transmitted.

870 
WUUS52 KMLB 151759
SVRMLB
FLC085-151830-
/O.NEW.KMLB.SV.W.0003.160115T1759Z-160115T1830Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MELBOURNE FL
1259 PM EST FRI JAN 15 2016

THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHWESTERN MARTIN COUNTY IN EAST CENTRAL FLORIDA...

* UNTIL 130 PM EST

* AT 1259 PM EST...A SEVERE THUNDERSTORM WAS LOCATED NEAR J AND S
  FISH CAMP...MOVING EAST AT 50 MPH.

  HAZARD...60 MPH WIND GUSTS. 

  SOURCE...RADAR INDICATED. 

  IMPACT...EXPECT DAMAGE TO ROOFS...SIDING AND TREES. 

* LOCATIONS IMPACTED INCLUDE...
  INDIANTOWN AND J AND S FISH CAMP. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

REMAIN ALERT FOR A POSSIBLE TORNADO! TORNADOES CAN DEVELOP QUICKLY
FROM SEVERE THUNDERSTORMS. IF YOU SPOT A TORNADO GO AT ONCE INTO THE
BASEMENT OR SMALL CENTRAL ROOM IN A STURDY STRUCTURE.

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

&&

A TORNADO WATCH REMAINS IN EFFECT UNTIL 500 PM EST FOR EAST CENTRAL
FLORIDA.

LAT...LON 2708 8066 2711 8066 2712 8068 2714 8068
      2719 8037 2704 8029 2701 8063
TIME...MOT...LOC 1759Z 252DEG 42KT 2707 8065 

TORNADO...POSSIBLE
HAIL...<.75IN
WIND...60MPH
 
$$

15

1 follow-up statement

738 
WWUS52 KMLB 151824
SVSMLB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
124 PM EST FRI JAN 15 2016

FLC085-151834-
/O.EXP.KMLB.SV.W.0003.000000T0000Z-160115T1830Z/
MARTIN FL-
124 PM EST FRI JAN 15 2016

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN MARTIN COUNTY
WILL EXPIRE AT 130 PM EST...
                
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
THEREFORE THE WARNING WILL BE ALLOWED TO EXPIRE.  HOWEVER GUSTY WINDS
ARE STILL POSSIBLE.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 500 PM EST FOR PORTIONS
OF EAST CENTRAL FLORIDA.

LAT...LON 2708 8066 2711 8066 2712 8068 2714 8068
      2719 8037 2704 8029 2701 8063
TIME...MOT...LOC 1821Z 252DEG 42KT 2707 8065 

$$

15

The office that day

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

Issued	Product	Office	Counties	Lasted
Jan 15, 4:15 AM EST	Lake Wind Advisory	MLB	Lake, Okeechobee, Orange, Osceola, Seminole	12 hr
Jan 15, 9:32 AM EST	Special Weather Statement	MLB	Lake	58 min
Jan 15, 10:22 AM EST	Special Marine Warning	MLB		113 min
Jan 15, 10:23 AM EST	Special Weather Statement	MLB	Brevard, Lake, Orange, Osceola, Seminole, Volusia	82 min
Jan 15, 10:46 AM EST	Special Weather Statement	MLB	Brevard, Lake, Orange, Osceola, Seminole, Volusia	59 min
Jan 15, 10:54 AM EST	Severe Thunderstorm Warning	MLB	Orange, Osceola, Seminole	66 min
Jan 15, 11:40 AM EST	Special Weather Statement	MLB	Brevard, Osceola	50 min
Jan 15, 11:49 AM EST	Severe Thunderstorm Warning	MLB	Brevard	41 min
Jan 15, 11:57 AM EST	Special Marine Warning	MLB		63 min
Jan 15, 12:32 PM EST	Special Weather Statement	MLB	Indian River, Martin, Okeechobee, Saint Lucie	58 min
Jan 15, 12:35 PM EST	Special Marine Warning	MLB		115 min
Jan 15, 1:23 PM EST	Special Marine Warning	MLB		112 min
Jan 15, 1:29 PM EST	Special Weather Statement	MLB	Martin, Saint Lucie	31 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.