Alert archive / Florida / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 4, NWS Melbourne, FL

February 13, 2007Brevard County, Florida

NWS Melbourne, FL issued this severe thunderstorm warning at Feb 13, 2007, 3:42 PM EST for Brevard County, Florida. It was in force for 63 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
Feb 13, 2007, 3:42 PM EST (20:42 UTC)
Expired
Feb 13, 2007, 4:45 PM EST
In force
63 min
Issued by
NWS Melbourne, FL
Area
Counties, with a storm outline in the text

County Brevard County, FL

The radar

The Melbourne radar (KMLB), 34 km from the middle of the area, began a volume at 20:44 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

TimeReportWhereRemark
Feb 13, 4:09 PM ESTTSTM WND DMGPalm Bay, FLTREE DOWN ON POWER LINE. REPORT FROM PALM BAY PD

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

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Feb 13, 12:54 PM ESTSevere Thunderstorm WatchSPC5 hr

The nearest sounding before it

Cape Canaveral, FL (KXMR), launched 12:00Z, 8.7 hours before the alert went out and 21 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-pSkew-T log-p diagram, Cape Canaveral, FL at 12:00Z on 2007-02-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 728 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Cape Canaveral, FL at 12:00Z on 2007-02-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 45 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
728 J/kg
Mixed-layer CIN
-6 J/kg
Mixed-layer LCL
650 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
45 m²/s²
0-3 km storm-relative helicity
94 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.4

Open this sounding in Storm Lab

The text

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

000 
WUUS52 KMLB 132046
SVRMLB
FLC009-132145-
/O.NEW.KMLB.SV.W.0004.070213T2042Z-070213T2145Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MELBOURNE FL
342 PM EST TUE FEB 13 2007

THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  BREVARD COUNTY IN EAST CENTRAL FLORIDA...
  THIS INCLUDES THE CITIES OF...MERRITT ISLAND...CAPE 
CANAVERAL...TITUSVILLE...ROCKLEDGE...PORT SAINT JOHN...PATRICK 
AIRFORCE BASE...PALM BAY...MELBOURNE...SATELLITE 
BEACH...INDIALANTIC...COCOA BEACH...COCOA...BAREFOOT BAY...

* UNTIL 445 PM EST

* AT 339 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN
  EXCESS OF 60 MPH.  THESE STORMS WERE LOCATED ALONG A LINE EXTENDING
  FROM 15 MILES WEST OF CANAVERAL GROVES TO 14 MILES WEST OF
  MELBOURNE TO 30 MILES SOUTHWEST OF MELBOURNE...AND MOVING
  NORTHEAST AT 30 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  CANAVERAL ACRES AND CANAVERAL GROVES BY 405 PM EST...
  TITUSVILLE AIRPORT...VIERA...SHARPES AND COCOA BY 415 PM EST...
  TITUSVILLE...ROCKLEDGE...PORT SAINT JOHN AND PINEDA BY 420 PM
  EST...

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 2847 8052 2836 8062 2821 8062 2791 8046
      2785 8086 2851 8086 2857 8093 2860 8083
      2854 8076 2857 8073 2863 8079 2869 8066

$$
2 follow-up statements
000 
WWUS52 KMLB 132115
SVSMLB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
414 PM EST TUE FEB 13 2007

FLC009-132145-
/O.CON.KMLB.SV.W.0004.000000T0000Z-070213T2145Z/
BREVARD FL-
414 PM EST TUE FEB 13 2007

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 PM EST 
FOR BREVARD COUNTY...

AT 409 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING
WINDS IN EXCESS OF 60 MPH.  THESE STORMS WERE LOCATED ALONG A LINE 
EXTENDING FROM KLONDIKE BEACH TO INDIAN HARBOUR BEACH TO 8 
MILES SOUTH OF PALM BAY...OR ALONG A LINE EXTENDING FROM PLAYALINDA 
BEACH TO SATELLITE BEACH TO 8 MILES SOUTH OF PALM BAY...MOVING 
NORTHEAST AT 30 MPH.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 700 PM EST 
TUESDAY EVENING FOR EAST CENTRAL FLORIDA.

LAT...LON 2847 8052 2836 8062 2821 8062 2791 8046
      2785 8086 2851 8086 2857 8093 2860 8083
      2854 8076 2857 8073 2863 8079 2869 8066

$$
000 
WWUS52 KMLB 132143
SVSMLB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
443 PM EST TUE FEB 13 2007

FLC009-132153-
/O.EXP.KMLB.SV.W.0004.000000T0000Z-070213T2145Z/
BREVARD FL-
443 PM EST TUE FEB 13 2007

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL BREVARD COUNTY EXPIRES
AT 445 PM EST...

NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THE SEVERE STORM
THAT PROMPTED THE WARNING HAD WEAKENED AND EXITED THE WARNING AREA...
THUS THE WARNING HAS BEEN ALLOWED TO EXPIRE.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 700 PM EST
TUESDAY EVENING FOR EAST CENTRAL FLORIDA.

LAT...LON 2847 8052 2836 8062 2821 8062 2791 8046
      2785 8086 2851 8086 2857 8093 2860 8083
      2854 8076 2857 8073 2863 8079 2869 8066

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 13, 8:10 AM ESTSpecial Marine WarningMLB65 min
Feb 13, 2:38 PM ESTSevere Thunderstorm WarningMLBOsceola67 min
Feb 13, 2:55 PM ESTSpecial Marine WarningMLB2 hr
Feb 13, 3:25 PM ESTSevere Thunderstorm WarningMLBOrange, Osceola50 min
Feb 13, 3:46 PM ESTSevere Thunderstorm WarningMLBOkeechobee59 min
Feb 13, 4:23 PM ESTSevere Thunderstorm WarningMLBIndian River, Saint Lucie67 min
Feb 13, 5:01 PM ESTSpecial Marine WarningMLB119 min

Nearby

Severe Thunderstorm Warnings in Florida, 2007Every severe thunderstorm warning in 2007

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.