Alert archive / Florida / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 2, NWS Melbourne, FL

February 13, 2007Osceola County, Florida

NWS Melbourne, FL issued this severe thunderstorm warning at Feb 13, 2007, 2:38 PM EST for Osceola County, Florida. It was in force for 67 min. 2 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
Feb 13, 2007, 2:38 PM EST (19:38 UTC)
Expired
Feb 13, 2007, 3:45 PM EST
In force
67 min
Issued by
NWS Melbourne, FL
Area
Counties, with a storm outline in the text

County Osceola County, FL

The radar

The Melbourne radar (KMLB), 75 km from the middle of the area, began a volume at 19:40 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, 3:01 PM ESTTSTM WND DMGPoinciana, FLWIDESPREAD POWER OUTAGES IN THE POINCIANA AREA. REPORT FROM OSCEOLA S.O.
Feb 13, 3:14 PM ESTTSTM WND GST 581 Se West Lake Toho, FLALSO RECEIVED 1 INCH OF RAIN IN A SHORT TIME SPAN.

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, 7.6 hours before the alert went out and 100 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 131938
SVRMLB
FLC097-132045-
/O.NEW.KMLB.SV.W.0002.070213T1938Z-070213T2045Z/

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

THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN OSCEOLA COUNTY IN EAST CENTRAL FLORIDA...
  THIS INCLUDES THE CITY OF HOLOPAW...

* UNTIL 345 PM EST

* AT 236 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
  OF 60 MPH.  THIS STORM WAS LOCATED 17 MILES SOUTHWEST OF POINCIANA
  PLACE...OR ABOUT NEAR CYPRESS GARDENS...AND MOVING NORTHEAST AT 45
  MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  POINCIANA AND POINCIANA PLACE BY 255 PM EST...
  HARMONY BY 315 PM EST...
  7 MILES NORTHWEST OF HOLOPAW BY 320 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 2807 8184 2785 8169 2808 8085 2834 8089

$$
1 follow-up statement
000 
WWUS52 KMLB 132004
SVSMLB

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

FLC097-132045-
/O.CON.KMLB.SV.W.0002.000000T0000Z-070213T2045Z/
OSCEOLA FL-
302 PM EST TUE FEB 13 2007

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 345 PM EST
FOR NORTHERN OSCEOLA COUNTY...

AT 301 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR POINCIANA MOVING EAST 
AT 50 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  7 MILES SOUTH OF SAINT CLOUD BY 305 PM EST...
  ALLIGATOR LAKE AND 6 MILES SOUTH OF REPTILE WORLD BY 310 PM EST...
  HARMONY...HOLOPAW AND 7 MILES SOUTH OF PINE GROVE BY 315 PM EST...
  9 MILES NORTH OF DEER PARK BY 325 PM EST...

DAMAGING WINDS WERE REPORTED IN LAKE WALES...BARTOW AND LAKELAND 
WITH THIS STORM. THIS IS A DANGEROUS STORM...SEEK SAFE SHELTER AND 
STAY AWAY FROM WINDOWS

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

LAT...LON 2807 8184 2785 8169 2808 8085 2834 8089
      2824 8139

$$

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, 2:55 PM ESTSpecial Marine WarningMLB2 hr
Feb 13, 3:25 PM ESTSevere Thunderstorm WarningMLBOrange, Osceola50 min
Feb 13, 3:42 PM ESTSevere Thunderstorm WarningMLBBrevard63 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.