Alert archive / Florida / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 83, NWS Melbourne, FL

August 16, 2012Brevard County, Florida

NWS Melbourne, FL issued this severe thunderstorm warning at Aug 16, 2012, 3:55 PM EDT for Brevard County, Florida. It was in force for 47 min. 3 reports 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: Aug 16, 2012, 3:55 PM EDT (19:55 UTC)
Expired: Aug 16, 2012, 4:42 PM EDT
In force: 47 min
Issued by: NWS Melbourne, FL
Area: Storm-based polygon

County Brevard County, FL

What was reported inside it

Time	Report	Where	Remark
Aug 16, 3:58 PM EDT	HAIL 0.7	Wnw Cocoa, FL	DIME SIZED HAIL IN COCOA AT PINECREST COURT AND CLEARLAKE ROAD.
Aug 16, 4:10 PM EDT	HAIL 1	4 Wsw Cocoa, FL	QUARTER SIZED HAIL ON HIGHWAY 520 ABOUT A MILE AND A HALF WEST OF INTERSTATE 95. REPORTED BY CAPE WEATHER OBSERVER.
Aug 16, 4:15 PM EDT	TSTM WND GST 43	3 Sse Cocoa, FL	U.S. AIR FORCE WIND TOWER 9404 AT 54 FEET MEASURED A THUNDERSTORM WIND GUST OF 37 KT/43 MPH.

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, 7.9 hours before the alert went out and 19 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: 1398 J/kg
Mixed-layer CIN: -32 J/kg
Mixed-layer LCL: 1006 m above ground
0-6 km bulk shear: 10 kt
0-1 km storm-relative helicity: 7 m²/s²
0-3 km storm-relative helicity: 3 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.

105 
WUUS52 KMLB 161955
SVRMLB
FLC009-162100-
/O.NEW.KMLB.SV.W.0083.120816T1955Z-120816T2100Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MELBOURNE FL
355 PM EDT THU AUG 16 2012

THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A

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

* UNTIL 500 PM EDT.

* AT 352 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 COCOA...AND MOVING   
SOUTHEAST AT 5 TO 10 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE...BUT ARE NOT LIMITED TO...
  PORT CANAVERAL...MERRITT ISLAND...CAPE CANAVERAL...ROCKLEDGE...
  COCOA BEACH...VIERA AND 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 2844 8055 2840 8059 2823 8059 2823 8060
      2823 8062 2828 8061 2831 8065 2829 8066
      2824 8065 2827 8083 2844 8083 2848 8077
      2841 8073 2850 8074 2860 8058 2845 8052
TIME...MOT...LOC 1955Z 336DEG 8KT 2837 8073

$$

SEDLOCK

2 follow-up statements

635 
WWUS52 KMLB 162018
SVSMLB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
418 PM EDT THU AUG 16 2012

FLC009-162100-
/O.CON.KMLB.SV.W.0083.000000T0000Z-120816T2100Z/
BREVARD-
418 PM EDT THU AUG 16 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 PM EDT
FOR CENTRAL BREVARD COUNTY...

AT 414 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 ROCKLEDGE...MOVING 
SOUTHEAST AT 5 TO 10 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
GEORGIANA...SPACE COAST STADIUM...VIERA AND PATRICK AIRFORCE BASE

LAT...LON 2844 8055 2840 8059 2823 8059 2823 8062
      2828 8061 2831 8065 2829 8066 2824 8065
      2827 8083 2837 8083 2842 8077 2841 8073
      2849 8063 2860 8058 2845 8052
TIME...MOT...LOC 2018Z 332DEG 11KT 2829 8070

$$

SEDLOCK

878 
WWUS52 KMLB 162042
SVSMLB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
442 PM EDT THU AUG 16 2012

FLC009-162052-
/O.CAN.KMLB.SV.W.0083.000000T0000Z-120816T2100Z/
BREVARD-
442 PM EDT THU AUG 16 2012

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

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

LAT...LON 2844 8055 2840 8059 2823 8059 2823 8062
      2828 8061 2831 8065 2829 8066 2824 8065
      2827 8083 2837 8083 2842 8077 2841 8073
      2849 8063 2860 8058 2845 8052
TIME...MOT...LOC 2042Z 332DEG 11KT 2823 8066

$$

SEDLOCK

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 15, 8:21 PM EDT	Areal Flood Advisory	MLB	Seminole, Volusia	114 min
Aug 15, 8:36 PM EDT	Special Weather Statement	MLB	Seminole	39 min
Aug 15, 8:57 PM EDT	Areal Flood Warning	MLB	Seminole	2 hr
Aug 16, 1:58 PM EDT	Special Weather Statement	MLB	Lake	47 min
Aug 16, 3:12 PM EDT	Special Marine Warning	MLB		108 min
Aug 16, 3:31 PM EDT	Special Weather Statement	MLB	Brevard	44 min
Aug 16, 3:59 PM EDT	Special Marine Warning	MLB		2 hr
Aug 16, 4:19 PM EDT	Special Weather Statement	MLB	Brevard	41 min
Aug 16, 4:24 PM EDT	Special Weather Statement	MLB	Osceola	51 min
Aug 16, 4:53 PM EDT	Special Weather Statement	MLB	Seminole	52 min
Aug 16, 5:03 PM EDT	Severe Thunderstorm Warning	MLB	Brevard	27 min
Aug 16, 5:08 PM EDT	Areal Flood Advisory	MLB	Brevard	112 min
Aug 16, 5:25 PM EDT	Special Weather Statement	MLB	Brevard	35 min
Aug 16, 5:36 PM EDT	Special Weather Statement	MLB	Osceola	39 min
Aug 16, 6:15 PM EDT	Special Weather Statement	MLB	Osceola	45 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive.