Alert archive / Florida / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 39, NWS Melbourne, FL

June 2, 2008Osceola County, Florida

NWS Melbourne, FL issued this severe thunderstorm warning at Jun 2, 2008, 6:30 PM EDT for Osceola County, Florida. It was in force for 60 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 2, 2008, 6:30 PM EDT (22:30 UTC)
Expired: Jun 2, 2008, 7:30 PM EDT
In force: 60 min
Issued by: NWS Melbourne, FL
Area: Storm-based polygon

County Osceola County, FL

The radar

The Melbourne radar (KMLB), 40 km from the middle of the area, began a volume at 22:33 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, 10.5 hours before the alert went out and 60 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: 1555 J/kg
Mixed-layer CIN: -24 J/kg
Mixed-layer LCL: 913 m above ground
0-6 km bulk shear: 13 kt
0-1 km storm-relative helicity: 23 m²/s²
0-3 km storm-relative helicity: 19 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.

000 
WUUS52 KMLB 022230
SVRMLB
FLC097-022330-
/O.NEW.KMLB.SV.W.0039.080602T2230Z-080602T2330Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MELBOURNE FL
630 PM EDT MON JUN 2 2008

THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN OSCEOLA COUNTY IN FLORIDA.

* UNTIL 730 PM EDT

* AT 628 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING NICKEL SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 7 MILES
  NORTHEAST OF NARCOOSSEE...AND MOVING SOUTH AT 18 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE...BUT ARE NOT LIMITED TO...
  EAST LAKE TOHO...SAINT CLOUD...HARMONY AND HOLOPAW

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.

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...CONTINUOUS CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS
IMMEDIATELY LIGHTNING IS ONE OF NATURES NUMBER ONE KILLERS.
REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE
STRUCK BY LIGHTNING.

LAT...LON 2813 8087 2812 8130 2834 8131 2834 8087
TIME...MOT...LOC 2230Z 351DEG 19KT 2833 8114

$$

SEDLOCK

2 follow-up statements

000 
WWUS52 KMLB 022254
SVSMLB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
653 PM EDT MON JUN 2 2008

FLC097-022330-
/O.CON.KMLB.SV.W.0039.000000T0000Z-080602T2330Z/
OSCEOLA FL-
653 PM EDT MON JUN 2 2008

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM EDT
FOR NORTHEASTERN OSCEOLA COUNTY...

AT 651 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING NICKEL SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS
LOCATED NEAR REPTILE WORLD...OR NEAR NARCOOSSEE...MOVING SOUTH AT 10
MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
ALLIGATOR LAKE...HARMONY AND HOLOPAW

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...CONTINUOUS CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS
IMMEDIATELY LIGHTNING IS ONE OF NATURES NUMBER ONE KILLERS.
REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE
STRUCK BY LIGHTNING.

LAT...LON 2813 8087 2812 8130 2834 8131 2834 8087
TIME...MOT...LOC 2253Z 000DEG 15KT 2824 8123

$$

SEDLOCK

000 
WWUS52 KMLB 022324
SVSMLB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
723 PM EDT MON JUN 2 2008

FLC097-022333-
/O.EXP.KMLB.SV.W.0039.000000T0000Z-080602T2330Z/
OSCEOLA FL-
723 PM EDT MON JUN 2 2008

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN OSCEOLA COUNTY
WILL EXPIRE AT 730 PM EDT...

NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THE SEVERE STORM 
THAT PROMPTED THE WARNING HAD WEAKENED...THOUGH BRIEF HEAVY 
DOWNPOURS...DANGEROUS LIGHTNING...AND GUSTY WINDS WILL STILL BE 
POSSIBLE OVER THE NEXT HALF HOUR AS ACTIVITY CONTINUES TO WEAKEN AND 
MOVE OUT OF THE WARNED AREA.

LAT...LON 2813 8087 2812 8130 2834 8131 2834 8087
TIME...MOT...LOC 2323Z 000DEG 15KT 2812 8123

$$

SEDLOCK

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 2, 2:52 PM EDT	Severe Thunderstorm Warning	MLB	Indian River	53 min
Jun 2, 3:44 PM EDT	Severe Thunderstorm Warning	MLB	Indian River, Okeechobee, Saint Lucie	61 min
Jun 2, 4:07 PM EDT	Severe Thunderstorm Warning	MLB	Lake, Volusia	53 min
Jun 2, 4:27 PM EDT	Areal Flood Advisory	MLB	Okeechobee	2 hr
Jun 2, 4:59 PM EDT	Severe Thunderstorm Warning	MLB	Lake	32 min
Jun 2, 5:36 PM EDT	Severe Thunderstorm Warning	MLB	Osceola	54 min
Jun 2, 5:44 PM EDT	Severe Thunderstorm Warning	MLB	Lake, Volusia	50 min
Jun 2, 5:44 PM EDT	Severe Thunderstorm Warning	MLB	Orange	61 min
Jun 2, 6:14 PM EDT	Areal Flood Advisory	MLB	Orange	2 hr

Nearby

Severe Thunderstorm Warnings in Florida, 2008 Every severe thunderstorm warning in 2008

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.