Alert archive / Florida / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 90, NWS Melbourne, FL

June 25, 2011Brevard County, Florida

NWS Melbourne, FL issued this severe thunderstorm warning at Jun 25, 2011, 2:48 PM EDT for Brevard County, Florida. It was in force for 16 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: Jun 25, 2011, 2:48 PM EDT (18:48 UTC)
Expired: Jun 25, 2011, 3:04 PM EDT
In force: 16 min
Issued by: NWS Melbourne, FL
Area: Storm-based polygon

County Brevard County, FL

The radar

The Melbourne radar (KMLB), 6 km from the middle of the area, began a volume at 18:49 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, 6.8 hours before the alert went out and 36 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: 468 J/kg
Mixed-layer CIN: -48 J/kg
Mixed-layer LCL: 814 m above ground
0-6 km bulk shear: 11 kt
0-1 km storm-relative helicity: -1 m²/s²
0-3 km storm-relative helicity: 7 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.

119 
WUUS52 KMLB 251848
SVRMLB
FLC009-251915-
/O.NEW.KMLB.SV.W.0090.110625T1848Z-110625T1915Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MELBOURNE FL
248 PM EDT SAT JUN 25 2011

THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CENTRAL BREVARD COUNTY IN FLORIDA

* UNTIL 315 PM EDT.

* AT 244 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 INDIAN HARBOUR BEACH...OR
  NEAR SATELLITE BEACH...AND MOVING EAST AT 10 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE...BUT ARE NOT LIMITED TO...
  PATRICK AIRFORCE BASE

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 2809 8057 2809 8059 2812 8059 2816 8063
      2810 8061 2810 8070 2822 8072 2823 8066
      2823 8064 2822 8063 2824 8062 2824 8060
TIME...MOT...LOC 1848Z 277DEG 9KT 2816 8063

$$


WEITLICH

1 follow-up statement

566 
WWUS52 KMLB 251904
SVSMLB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
304 PM EDT SAT JUN 25 2011

FLC009-251913-
/O.CAN.KMLB.SV.W.0090.000000T0000Z-110625T1915Z/
BREVARD-
304 PM EDT SAT JUN 25 2011

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

THE SEVERE STORM THAT PROMPTED THE WARNING HAD WEAKENED AND IS 
MOVING OFFSHORE FROM THE WARNING AREA...THUS THE WARNING HAS BEEN 
CANCELLED.

LAT...LON 2809 8057 2809 8059 2812 8059 2816 8063
      2810 8061 2810 8070 2822 8072 2823 8066
      2823 8064 2822 8063 2824 8062 2824 8060
TIME...MOT...LOC 1903Z 277DEG 9KT 2816 8059

$$


WEITLICH

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 25, 2:09 PM EDT	Special Weather Statement	MLB	Brevard, Osceola	51 min
Jun 25, 2:13 PM EDT	Special Marine Warning	MLB		92 min
Jun 25, 3:03 PM EDT	Areal Flood Advisory	MLB	Lake, Orange, Seminole	117 min
Jun 25, 3:25 PM EDT	Areal Flood Advisory	MLB	Brevard, Lake, Orange, Seminole, Volusia	95 min
Jun 25, 3:38 PM EDT	Areal Flood Advisory	MLB	Martin	82 min
Jun 25, 3:47 PM EDT	Special Weather Statement	MLB	Seminole	58 min
Jun 25, 3:54 PM EDT	Severe Thunderstorm Warning	MLB	Martin	35 min
Jun 25, 4:01 PM EDT	Special Marine Warning	MLB		59 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.