Alert archive / Florida / Severe Thunderstorm Warnings in 2004

Severe Thunderstorm Warning 69, NWS Melbourne, FL

June 28, 2004Lake County, Florida

NWS Melbourne, FL issued this severe thunderstorm warning at Jun 28, 2004, 5:49 PM EDT for Lake County, Florida. It was in force for 56 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 28, 2004, 5:49 PM EDT (21:49 UTC)
Expired: Jun 28, 2004, 6:45 PM EDT
In force: 56 min
Issued by: NWS Melbourne, FL
Area: Counties, with a storm outline in the text

County Lake County, FL

The radar

The Tampa radar (KTBW), 124 km from the middle of the area, began a volume at 21:53 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

Tampa Bay, FL (KTBW), launched 12:00Z, 9.8 hours before the alert went out and 124 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: 1590 J/kg
Mixed-layer CIN: -29 J/kg
Mixed-layer LCL: 857 m above ground
0-6 km bulk shear: 7 kt
0-1 km storm-relative helicity: -17 m²/s²
0-3 km storm-relative helicity: 4 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.

856 
WUUS52 KMLB 282149
SVRMLB
FLC069-282245-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MELBOURNE FL
548 PM EDT MON JUN 28 2004

THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  LAKE COUNTY
  IN EAST CENTRAL FLORIDA

* UNTIL 645 PM EDT

* AT 547 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A 
  SEVERE THUNDERSTORM OVER FERNDALE MOVING NORTHWEST AT 5 TO 10 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE ASTATULA...LITTLE LAKE 
   HARRIS AND HOWEY IN THE HILLS. 

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS IN EXCESS OF 58 MILES AN
HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING AND VERY HEAVY RAIN. IF
THE STORM APPROACHES YOU...MOVE TO AN INTERIOR ROOM ON THE LOWEST
FLOOR.

HEAVY RAINS MAY FLOOD LOW LYING AREAS SUCH AS DITCHES AND
UNDERPASSES. AVOID THESE AREAS AND DO NOT CROSS FLOODED ROADS AS THEY
MAY BE WASHED OUT. WATER LEVELS OF SMALL STREAMS AND RIVERS MAY ALSO
RISE...THEREFORE SEEK HIGHER GROUND IF THREATENED BY FLOOD WATERS.

LAT...LON 2856 8164 2873 8158 2888 8197 2862 8205

$$

52

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 28, 3:44 PM EDT	Severe Thunderstorm Warning	MLB	Volusia	61 min
Jun 28, 4:17 PM EDT	Severe Thunderstorm Warning	MLB	Lake	58 min
Jun 28, 4:51 PM EDT	Severe Thunderstorm Warning	MLB	Seminole	54 min
Jun 28, 5:23 PM EDT	Severe Thunderstorm Warning	MLB	Orange	37 min

Nearby

Severe Thunderstorm Warnings in Florida, 2004 Every severe thunderstorm warning in 2004

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.