Alert archive / Florida / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 93, NWS Melbourne, FL

July 1, 2011Saint Lucie County, Florida

NWS Melbourne, FL issued this severe thunderstorm warning at Jul 1, 2011, 5:18 PM EDT for Saint Lucie County, Florida. It was in force for 42 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: Jul 1, 2011, 5:18 PM EDT (21:18 UTC)
Expired: Jul 1, 2011, 6:00 PM EDT
In force: 42 min
Issued by: NWS Melbourne, FL
Area: Storm-based polygon

County Saint Lucie County, FL

The radar

The Melbourne radar (KMLB), 79 km from the middle of the area, began a volume at 21:20 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, 9.3 hours before the alert went out and 114 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: 312 J/kg
Mixed-layer CIN: -24 J/kg
Mixed-layer LCL: 743 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 25 m²/s²
0-3 km storm-relative helicity: -10 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.

295 
WUUS52 KMLB 012118
SVRMLB
FLC111-012200-
/O.NEW.KMLB.SV.W.0093.110701T2118Z-110701T2200Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MELBOURNE FL
518 PM EDT FRI JUL 1 2011

THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN ST. LUCIE COUNTY IN FLORIDA

* UNTIL 600 PM EDT.

* AT 515 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
  OF 60 MPH.  THIS STORM WAS LOCATED NEAR LAKEWOOD PARK...OR NEAR
  VERO BEACH SOUTH...AND MOVING SOUTHEAST AT 15 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE...BUT ARE NOT LIMITED TO...
  INDRIO...QUEENS COVE...SAINT LUCIE AIRPORT...SAINT LUCIE VILLAGE...
  FORT PIERCE INLET AND FORT PIERCE

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 2742 8027 2742 8029 2744 8031 2741 8031
      2739 8047 2756 8054 2756 8032 2748 8029
TIME...MOT...LOC 2118Z 331DEG 11KT 2756 8047

$$

4 follow-up statements

436 
WWUS52 KMLB 012128
SVSMLB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
528 PM EDT FRI JUL 1 2011

FLC111-012200-
/O.CON.KMLB.SV.W.0093.000000T0000Z-110701T2200Z/
ST. LUCIE-
528 PM EDT FRI JUL 1 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 PM EDT
FOR NORTHEASTERN ST. LUCIE COUNTY...

AT 524 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUED TO
DETECT A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR LAKEWOOD PARK...OR 6 
MILES SOUTHWEST OF VERO BEACH SOUTH...MOVING SOUTHEAST AT 5 TO 10 
MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO 
INDRIO...SAINT LUCIE AIRPORT...SAINT LUCIE VILLAGE...FORT PIERCE 
NORTH...FORT PIERCE SOUTH AND FORT PIERCE.

LAT...LON 2742 8027 2742 8029 2744 8031 2741 8031
      2739 8047 2756 8054 2756 8032 2748 8029
TIME...MOT...LOC 2127Z 331DEG 11KT 2754 8045

$$



BRAGAW

344 
WWUS52 KMLB 012132
SVSMLB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
532 PM EDT FRI JUL 1 2011

FLC111-012200-
/O.CON.KMLB.SV.W.0093.000000T0000Z-110701T2200Z/
ST. LUCIE-
532 PM EDT FRI JUL 1 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 PM EDT
FOR NORTHEASTERN ST. LUCIE COUNTY...

AT 524 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUED TO
DETECT A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR LAKEWOOD PARK...OR 6
MILES SOUTHWEST OF VERO BEACH SOUTH...MOVING SOUTHEAST AT 15 MPH.

STRONG WIND GUSTS CAN BE EXPECTED ALONG I-95 AND THE FLORIDA 
TURNPIKE IN NORTH SAINT LUCIE COUNTY.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO 
INDRIO...SAINT LUCIE AIRPORT...SAINT LUCIE VILLAGE...FORT PIERCE 
NORTH...FORT PIERCE SOUTH AND FORT PIERCE.

LAT...LON 2742 8027 2742 8029 2744 8031 2741 8031
      2739 8047 2756 8054 2756 8032 2748 8029
TIME...MOT...LOC 2129Z 331DEG 11KT 2753 8045

$$

742 
WWUS52 KMLB 012143
SVSMLB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
543 PM EDT FRI JUL 1 2011

FLC111-012200-
/O.CON.KMLB.SV.W.0093.000000T0000Z-110701T2200Z/
ST. LUCIE-
543 PM EDT FRI JUL 1 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 PM EDT
FOR NORTHEASTERN ST. LUCIE COUNTY...

AT 539 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUED TO
DETECT A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN 
EXCESS OF 60 MPH.  THIS STORM WAS LOCATED JUST NORTHWEST OF FORT 
PIERCE. THE STORM HAS SHIFTED MOVEMENT AND IS NOW HEADING EAST AT 
10 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO QUEENS 
COVE...SAINT LUCIE AIRPORT...FORT PIERCE NORTH...PEPPER BEACH 
PARK...FORT PIERCE OCEAN PARK...FORT PIERCE INLET...FORT PIERCE 
SOUTH AND FORT PIERCE.

LAT...LON 2742 8027 2742 8029 2744 8031 2741 8031
      2739 8047 2756 8054 2756 8032 2748 8029
TIME...MOT...LOC 2141Z 331DEG 11KT 2750 8043

$$

294 
WWUS52 KMLB 012157
SVSMLB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
557 PM EDT FRI JUL 1 2011

FLC111-012207-
/O.EXP.KMLB.SV.W.0093.000000T0000Z-110701T2200Z/
ST. LUCIE-
557 PM EDT FRI JUL 1 2011

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN ST. LUCIE COUNTY
WILL EXPIRE AT 600 PM EDT...

THE SEVERE STORM THAT PROMPTED THE WARNING HAD WEAKENED AND EXITED
THE WARNING AREA...THUS THE WARNING HAS BEEN ALLOWED TO EXPIRE.

LAT...LON 2742 8027 2742 8029 2744 8031 2741 8031
      2739 8047 2756 8054 2756 8032 2748 8029
TIME...MOT...LOC 2157Z 331DEG 11KT 2746 8040

$$



BRAGAW

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 1, 3:25 PM EDT	Special Weather Statement	MLB	Brevard	50 min
Jul 1, 4:57 PM EDT	Severe Thunderstorm Warning	MLB	Indian River	48 min
Jul 1, 5:16 PM EDT	Special Marine Warning	MLB		89 min
Jul 1, 5:42 PM EDT	Special Weather Statement	MLB	Okeechobee	63 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.