Alert archive / Florida / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 33, NWS Melbourne, FL

May 17, 2012Brevard County, Orange County, Florida

NWS Melbourne, FL issued this severe thunderstorm warning at May 17, 2012, 9:29 PM EDT for Brevard County, Orange County, Florida. It was in force for 51 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, 2012, 9:29 PM EDT (01:29 UTC)
Expired: May 17, 2012, 10:20 PM EDT
In force: 51 min
Issued by: NWS Melbourne, FL
Area: Storm-based polygon

Counties Brevard County, FL, Orange County, FL

The radar

The Melbourne radar (KMLB), 33 km from the middle of the area, began a volume at 01:31 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

Tampa Bay, FL (KTBW), launched 00:00Z, 1.5 hours before the alert went out and 187 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: 987 J/kg
Mixed-layer CIN: -31 J/kg
Mixed-layer LCL: 1110 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: -7 m²/s²
0-3 km storm-relative helicity: 21 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.1

Open this sounding in Storm Lab

The text

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

965 
WUUS52 KMLB 180129
SVRMLB
FLC009-095-180230-
/O.NEW.KMLB.SV.W.0033.120518T0129Z-120518T0230Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MELBOURNE FL
929 PM EDT THU MAY 17 2012

THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN BREVARD COUNTY IN FLORIDA
  EASTERN ORANGE COUNTY IN FLORIDA

* UNTIL 1030 PM EDT.

* AT 926 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 6 MILES
  EAST OF CHRISTMAS...AND MOVING EAST AT 20 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE...BUT ARE NOT LIMITED TO...
  LONE CABBAGE FISH CAMP...TITUSVILLE...CANAVERAL GROVES...TITUSVILLE
  AIRPORT...PORT SAINT JOHN...SHARPES...COCOA...KENNEDY SPACE
  CENTER...MERRITT ISLAND...PLAYALINDA BEACH...COCOA BEACH...CAPE   
CANAVERAL AND PORT CANAVERAL.

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.

NATIONAL WEATHER SERVICE METEOROLOGISTS ALSO DETECTED SOME WEAK
ROTATION WITHIN THIS STORM. WHILE NOT IMMEDIATELY LIKELY...A TORNADO
MAY STILL DEVELOP. IF A TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO
A PLACE OF SAFETY IN A STURDY STRUCTURE...SUCH AS A SMALL INTERIOR
ROOM.

&&

LAT...LON 2840 8058 2832 8061 2833 8064 2836 8064
      2837 8062 2840 8063 2840 8065 2838 8066
      2836 8064 2833 8066 2838 8109 2861 8106
      2864 8061 2859 8057 2846 8052
TIME...MOT...LOC 0128Z 274DEG 18KT 2852 8091

$$


BOWEN

2 follow-up statements

916 
WWUS52 KMLB 180208
SVSMLB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
1008 PM EDT THU MAY 17 2012

FLC095-180218-
/O.CAN.KMLB.SV.W.0033.000000T0000Z-120518T0230Z/
ORANGE-
1008 PM EDT THU MAY 17 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN ORANGE COUNTY IS
CANCELLED...

LAT...LON 2840 8058 2832 8061 2833 8064 2836 8064
      2837 8062 2840 8063 2840 8065 2838 8066
      2836 8064 2833 8066 2836 8080 2859 8079
      2864 8061 2859 8057 2846 8052
TIME...MOT...LOC 0208Z 274DEG 18KT 2851 8068

$$

FLC009-180230-
/O.CON.KMLB.SV.W.0033.000000T0000Z-120518T0230Z/
BREVARD-
1008 PM EDT THU MAY 17 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1030 PM EDT
FOR CENTRAL BREVARD COUNTY...

AT 1004 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUED TO
DETECT A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS 
LOCATED NEAR MERRITT ISLAND...MOVING EAST AT 20 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO COCOA
BEACH...CAPE CANAVERAL...JETTY PARK AND PORT CANAVERAL

LAT...LON 2840 8058 2832 8061 2833 8064 2836 8064
      2837 8062 2840 8063 2840 8065 2838 8066
      2836 8064 2833 8066 2836 8080 2859 8079
      2864 8061 2859 8057 2846 8052
TIME...MOT...LOC 0208Z 274DEG 18KT 2851 8068

$$


BOWEN

612 
WWUS52 KMLB 180220
SVSMLB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
1020 PM EDT THU MAY 17 2012

FLC009-180230-
/O.CAN.KMLB.SV.W.0033.000000T0000Z-120518T0230Z/
BREVARD-
1020 PM EDT THU MAY 17 2012

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL BREVARD COUNTY IS
CANCELLED...

THE SEVERE STORM THAT PROMPTED THE WARNING HAS WEAKENED AND IS NO 
LONGER CAPABLE OF PRODUCING LARGE HAIL OR DAMAGING WINDS. AS A 
RESULT...THE WARNING HAS BEEN CANCELLED. HOWEVER...HEAVY RAIN AND 
DANGEROUS LIGHTNING STRIKES WILL CONTINUE TO BE POSSIBLE.

LAT...LON 2840 8058 2832 8061 2833 8064 2836 8064
      2837 8062 2840 8063 2840 8065 2838 8066
      2836 8064 2833 8066 2836 8080 2859 8079
      2864 8061 2859 8057 2846 8052
TIME...MOT...LOC 0220Z 274DEG 18KT 2851 8061

$$


BOWEN

The office that day

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

Issued	Product	Office	Counties	Lasted
May 17, 8:00 PM EDT	Severe Thunderstorm Warning	MLB	Brevard, Seminole, Volusia	60 min
May 17, 8:13 PM EDT	Special Marine Warning	MLB		2 hr
May 17, 8:16 PM EDT	Special Weather Statement	MLB	Orange, Seminole	44 min
May 17, 8:58 PM EDT	Special Weather Statement	MLB	Seminole	47 min
May 17, 9:43 PM EDT	Special Marine Warning	MLB		76 min
May 18, 4:50 PM EDT	Special Weather Statement	MLB	Brevard	40 min
May 18, 4:57 PM EDT	Severe Thunderstorm Warning	MLB	Orange, Osceola	35 min
May 18, 5:44 PM EDT	Special Weather Statement	MLB	Brevard	46 min
May 18, 6:03 PM EDT	Special Weather Statement	MLB	Okeechobee	42 min
May 18, 6:34 PM EDT	Severe Thunderstorm Warning	MLB	Okeechobee, Saint Lucie	42 min
May 18, 6:54 PM EDT	Special Weather Statement	MLB	Martin	66 min

Nearby

Severe Thunderstorm Warnings in Florida, 2012 Every severe thunderstorm warning in 2012

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.