Alert archive / Florida / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 40, NWS Melbourne, FL

May 14, 2011Orange County, Osceola County, Florida

NWS Melbourne, FL issued this severe thunderstorm warning at May 14, 2011, 3:04 PM EDT for Orange County, Osceola County, Florida. It was in force for 45 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: May 14, 2011, 3:04 PM EDT (19:04 UTC)
Expired: May 14, 2011, 3:49 PM EDT
In force: 45 min
Issued by: NWS Melbourne, FL
Area: Storm-based polygon

Counties Orange County, FL, Osceola County, FL

The radar

The Melbourne radar (KMLB), 78 km from the middle of the area, began a volume at 19:03 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.

What was reported inside it

Time	Report	Where	Remark
May 14, 3:19 PM EDT	TSTM WND GST 54	Orlando, FL	ORLANDO EXECUTIVE AIRPORT ASOS WIND GUST 47 KT / 54 MPH FROM 230 DEGREES

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Cape Canaveral, FL (KXMR), launched 12:00Z, 7.1 hours before the alert went out and 86 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: 172 J/kg
Mixed-layer CIN: -124 J/kg
Mixed-layer LCL: 1364 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: -23 m²/s²
0-3 km storm-relative helicity: 14 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

369 
WUUS52 KMLB 141904
SVRMLB
FLC095-097-142000-
/O.NEW.KMLB.SV.W.0040.110514T1904Z-110514T2000Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MELBOURNE FL
304 PM EDT SAT MAY 14 2011

THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN ORANGE COUNTY IN FLORIDA
  NORTHWESTERN OSCEOLA COUNTY IN FLORIDA

* UNTIL 400 PM EDT.

* AT 258 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR
  CELEBRATION...AND MOVING NORTHEAST AT 20 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE...BUT ARE NOT LIMITED TO...
  KISSIMMEE...DOCTOR PHILLIPS...SEA WORLD...WET N WILD WATER PARK...
  UNIVERSAL STUDIOS...BUENA VENTURA LAKES...OAK RIDGE...EAST LAKE
  TOHO...PINE CASTLE...BELLE ISLE...ORLANDO...ORLANDO INTERNATIONAL
  AIRPORT...CONWAY...LAKE MARY JANE AND CHRISTMAS

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS IN EXCESS OF 58 MILES AN
HOUR AND OR LARGE DESTRUCTIVE HAIL. FREQUENT TO EXCESSIVE LIGHTNING
AND VERY HEAVY RAIN WILL ALSO BE POSSIBLE. IF THE STORM APPROACHES
YOU...SEEK SHELTER IN AN ENCLOSED BUILDING ON THE LOWEST FLOOR. KEEP
AWAY FROM WINDOWS.

&&

LAT...LON 2856 8138 2849 8135 2858 8103 2841 8094
      2821 8154 2825 8156 2825 8158 2837 8165
TIME...MOT...LOC 1904Z 236DEG 19KT 2836 8149

$$



CRISTALDI

2 follow-up statements

173 
WWUS52 KMLB 141917
SVSMLB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
317 PM EDT SAT MAY 14 2011

FLC095-097-142000-
/O.CON.KMLB.SV.W.0040.000000T0000Z-110514T2000Z/
OSCEOLA-ORANGE-
317 PM EDT SAT MAY 14 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 400 PM EDT
FOR SOUTHERN ORANGE AND NORTHWESTERN OSCEOLA COUNTIES...

AT 308 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUED TO
DETECT A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER
SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THESE STORMS 
WERE LOCATED ALONG A LINE EXTENDING FROM ORLANDO TO INTERCESSION 
CITY...MOVING NORTHEAST AT 25 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO PINE
CASTLE...BELLE ISLE...CONWAY...KISSIMMEE...OSCEOLA ASTROS COMPLEX...
BUENA VENTURA LAKES...ORLANDO INTERNATIONAL AIRPORT...EAST LAKE
TOHO...WEDGEFIELD...LAKE MARY JANE...CHRISTMAS PARK AND CHRISTMAS

LAT...LON 2856 8138 2849 8135 2858 8103 2841 8094
      2821 8154 2825 8156 2825 8158 2837 8165
TIME...MOT...LOC 1917Z 236DEG 19KT 2853 8134 2838 8143
          2830 8149

$$



CRISTALDI

197 
WWUS52 KMLB 141949
SVSMLB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
349 PM EDT SAT MAY 14 2011

FLC095-097-141958-
/O.CAN.KMLB.SV.W.0040.000000T0000Z-110514T2000Z/
OSCEOLA-ORANGE-
349 PM EDT SAT MAY 14 2011

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN ORANGE AND
NORTHWESTERN OSCEOLA COUNTIES IS CANCELLED...

THE SEVERE STORMS THAT PROMPTED THE WARNING HAD WEAKENED AND WERE
NO LONGER CAPABLE OF PRODUCING LARGE HAIL OR DAMAGING WINDS. AS A 
RESULT...THE WARNING HAS BEEN CANCELLED. HOWEVER...SMALL HAIL...
VERY HEAVY RAIN AND DANGEROUS LIGHTNING STRIKES WILL CONTINUE WITH 
STORMS IN THE AREA.

LAT...LON 2856 8138 2849 8135 2858 8103 2841 8094
      2821 8154 2825 8156 2825 8158 2837 8165
TIME...MOT...LOC 1948Z 236DEG 19KT 2862 8118 2847 8128
          2839 8134

$$




CRISTALDI

The office that day

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

Issued	Product	Office	Counties	Lasted
May 13, 8:11 PM EDT	Special Marine Warning	MLB		94 min
May 14, 12:57 PM EDT	Special Weather Statement	MLB	Okeechobee	63 min
May 14, 1:19 PM EDT	Severe Thunderstorm Warning	MLB	Okeechobee, Osceola	56 min
May 14, 2:03 PM EDT	Special Weather Statement	MLB	Brevard, Indian River, Okeechobee, Osceola, Saint Lucie	42 min
May 14, 2:09 PM EDT	Special Marine Warning	MLB		111 min
May 14, 2:10 PM EDT	Severe Thunderstorm Warning	MLB	Brevard, Osceola	44 min
May 14, 2:17 PM EDT	Severe Thunderstorm Warning	MLB	Indian River, Okeechobee, Saint Lucie	40 min
May 14, 2:40 PM EDT	Special Weather Statement	MLB	Orange, Seminole	50 min
May 14, 2:52 PM EDT	Severe Thunderstorm Warning	MLB	Brevard, Orange, Seminole, Volusia	53 min
May 14, 3:17 PM EDT	Special Marine Warning	MLB		118 min
May 14, 3:21 PM EDT	Special Weather Statement	MLB	Lake	69 min
May 14, 3:26 PM EDT	Special Weather Statement	MLB	Martin	64 min
May 14, 3:43 PM EDT	Severe Thunderstorm Warning	MLB	Martin	57 min
May 14, 3:45 PM EDT	Severe Thunderstorm Warning	MLB	Lake, Volusia	60 min
May 14, 3:53 PM EDT	Special Marine Warning	MLB		112 min
May 14, 3:58 PM EDT	Special Marine Warning	MLB		92 min
May 14, 4:00 PM EDT	Special Weather Statement	MLB	Orange, Seminole	45 min
May 14, 4:23 PM EDT	Tornado Warning	MLB	Martin	14 min
May 14, 4:44 PM EDT	Special Weather Statement	MLB	Osceola	46 min
May 14, 5:18 PM EDT	Special Weather Statement	MLB	Indian River, Okeechobee, Saint Lucie	72 min
May 14, 5:29 PM EDT	Special Weather Statement	MLB	Martin	46 min

Nearby

Severe Thunderstorm Warnings in Florida, 2011 Every severe thunderstorm warning in 2011

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.