Alert archive / Florida / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 40, NWS Melbourne, FL

May 17, 2016Martin County, Okeechobee County, Saint Lucie County, Florida

NWS Melbourne, FL issued this severe thunderstorm warning at May 17, 2016, 3:38 PM EDT for Martin County, Okeechobee County, Saint Lucie County, Florida. It was in force for 25 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 17, 2016, 3:38 PM EDT (19:38 UTC)
Expired: May 17, 2016, 4:03 PM EDT
In force: 25 min
Issued by: NWS Melbourne, FL
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Martin County, FL, Okeechobee County, FL, Saint Lucie County, FL

The radar

The Melbourne radar (KMLB), 105 km from the middle of the area, began a volume at 19:37 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 146 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: 1551 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 633 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 119 m²/s²
0-3 km storm-relative helicity: 169 m²/s²
Significant tornado parameter: 0.6
Supercell composite: 4.8

Open this sounding in Storm Lab

The text

As transmitted.

465 
WUUS52 KMLB 171938
SVRMLB
FLC085-093-111-172030-
/O.NEW.KMLB.SV.W.0040.160517T1938Z-160517T2030Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MELBOURNE FL
338 PM EDT TUE MAY 17 2016

THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHWESTERN ST. LUCIE COUNTY IN EAST CENTRAL FLORIDA...
  NORTHWESTERN MARTIN COUNTY IN EAST CENTRAL FLORIDA...
  SOUTHEASTERN OKEECHOBEE COUNTY IN EAST CENTRAL FLORIDA...

* UNTIL 430 PM EDT

* AT 337 PM EDT...SEVERE THUNDERSTORMS WERE LOCATED OVER OKEECHOBEE
  AND RURAL NORTHWESTERN MARTIN COUNTYMOVING NORTHEAST AT 25 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...
  TREASURE ISLAND...OKEECHOBEE...TAYLOR CREEK...FOUR SEASONS ESTATES AND
  COUNTRY HILLS ESTATES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

LARGE HAIL AND DAMAGING WINDS AND CONTINUOUS CLOUD TO GROUND
LIGHTNING IS OCCURRING WITH THIS STORM. 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 2710 8066 2711 8066 2712 8068 2714 8069
      2716 8071 2721 8079 2720 8083 2719 8084
      2720 8087 2737 8082 2724 8040 2706 8059
TIME...MOT...LOC 1937Z 233DEG 20KT 2722 8069 

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

ULRICH

1 follow-up statement

616 
WWUS52 KMLB 172003
SVSMLB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
403 PM EDT TUE MAY 17 2016

FLC085-093-111-172011-
/O.CAN.KMLB.SV.W.0040.000000T0000Z-160517T2030Z/
ST. LUCIE FL-MARTIN FL-OKEECHOBEE FL-
403 PM EDT TUE MAY 17 2016

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN ST. LUCIE...
NORTHWESTERN MARTIN AND SOUTHEASTERN OKEECHOBEE COUNTIES IS
CANCELLED...
        
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND MOVED INTO ST. LUCIE COUNTY. HEAVY RAIN WILL CONTINUE
TO BE A THREAT ACROSS NORTHWESTERN MARTIN COUNTY AND SOUTHEASTERN
OKEECHOBEE COUNTY OVER THE NEXT HOUR. 

LAT...LON 2710 8066 2711 8066 2712 8068 2714 8069
      2716 8071 2721 8079 2720 8083 2719 8084
      2720 8087 2737 8082 2724 8040 2706 8059
TIME...MOT...LOC 2000Z 233DEG 20KT 2730 8057 

$$

ULRICH

The office that day

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

Issued	Product	Office	Counties	Lasted
May 17, 12:50 PM EDT	Special Weather Statement	MLB	Orange	55 min
May 17, 1:21 PM EDT	Special Weather Statement	MLB	Brevard	54 min
May 17, 1:28 PM EDT	Special Marine Warning	MLB		62 min
May 17, 1:48 PM EDT	Special Weather Statement	MLB	Indian River	42 min
May 17, 2:00 PM EDT	Areal Flood Advisory	MLB	Brevard, Indian River, Saint Lucie	2 hr
May 17, 2:19 PM EDT	Special Marine Warning	MLB		56 min
May 17, 2:21 PM EDT	Special Weather Statement	MLB	Indian River	39 min
May 17, 2:41 PM EDT	Tornado Warning	MLB	Indian River	34 min
May 17, 2:43 PM EDT	Areal Flood Warning	MLB	Indian River	92 min
May 17, 2:59 PM EDT	Tornado Warning	MLB	Indian River, Saint Lucie	31 min
May 17, 3:02 PM EDT	Tornado Warning	MLB	Saint Lucie	28 min
May 17, 3:10 PM EDT	Special Weather Statement	MLB	Okeechobee	50 min
May 17, 3:11 PM EDT	Special Weather Statement	MLB	Martin, Saint Lucie	64 min
May 17, 3:18 PM EDT	Special Marine Warning	MLB		87 min
May 17, 3:27 PM EDT	Special Marine Warning	MLB		93 min
May 17, 3:47 PM EDT	Areal Flood Warning	MLB	Saint Lucie	118 min
May 17, 3:51 PM EDT	Special Weather Statement	MLB	Osceola	54 min
May 17, 4:01 PM EDT	Special Weather Statement	MLB	Indian River, Saint Lucie	59 min
May 17, 4:13 PM EDT	Areal Flood Warning	MLB	Indian River	3 hr
May 17, 4:18 PM EDT	Special Weather Statement	MLB	Volusia	57 min
May 17, 4:39 PM EDT	Special Weather Statement	MLB	Lake	51 min
May 17, 4:41 PM EDT	Special Marine Warning	MLB		94 min
May 17, 4:51 PM EDT	Special Weather Statement	MLB	Osceola	39 min
May 17, 5:06 PM EDT	Special Weather Statement	MLB	Orange	39 min
May 17, 5:15 PM EDT	Special Weather Statement	MLB	Flagler	45 min
May 17, 5:30 PM EDT	Special Marine Warning	MLB		90 min
May 17, 5:40 PM EDT	Areal Flood Advisory	MLB	Lake, Orange, Seminole, Volusia	95 min
May 17, 5:44 PM EDT	Areal Flood Warning	MLB	Saint Lucie	2 hr
May 17, 5:47 PM EDT	Special Weather Statement	MLB	Volusia	43 min
May 17, 6:02 PM EDT	Special Weather Statement	MLB	Saint Lucie	58 min
May 17, 6:25 PM EDT	Special Weather Statement	MLB	Volusia	50 min
May 17, 6:27 PM EDT	Special Marine Warning	MLB		63 min
May 17, 6:45 PM EDT	Special Weather Statement	MLB	Lake	60 min
May 17, 7:06 PM EDT	Special Marine Warning	MLB		84 min
May 17, 7:16 PM EDT	Areal Flood Advisory	MLB	Indian River	4 hr
May 17, 7:27 PM EDT	Special Weather Statement	MLB	Orange	63 min
May 17, 7:36 PM EDT	Special Weather Statement	MLB	Volusia	54 min
May 17, 7:45 PM EDT	Areal Flood Advisory	MLB	Saint Lucie	4 hr

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.