Alert archive / Florida / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 32, NWS Melbourne, FL

April 25, 2003Volusia County, Florida

NWS Melbourne, FL issued this severe thunderstorm warning at Apr 25, 2003, 4:16 PM EDT for Volusia County, Florida. It was in force for 44 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: Apr 25, 2003, 4:16 PM EDT (20:16 UTC)
Expired: Apr 25, 2003, 5:00 PM EDT
In force: 44 min
Issued by: NWS Melbourne, FL
Area: Counties, with a storm outline in the text

County Volusia County, FL

The radar

The Melbourne radar (KMLB), 137 km from the middle of the area, began a volume at 20:17 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 watch it was issued in

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

Issued	Product	Office	Lasted
Apr 25, 2:15 PM EDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Cape Canaveral, FL (KXMR), launched 12:00Z, 8.3 hours before the alert went out and 105 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: 1054 J/kg
Mixed-layer CIN: -112 J/kg
Mixed-layer LCL: 955 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: -6 m²/s²
0-3 km storm-relative helicity: 73 m²/s²
Significant tornado parameter: -0.0
Supercell composite: -0.2

Open this sounding in Storm Lab

The text

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

950 
WUUS52 KMLB 252016
SVRMLB
FLC127-252100-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MELBOURNE FL
415 PM EDT FRI APR 25 2003

THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTH CENTRAL VOLUSIA COUNTY
  IN EAST CENTRAL FLORIDA

* UNTIL 500 PM EDT

* AT 407 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 10 MILES WEST OF DAYTONA BEACH INTL SPEEDWAY...
  OR ABOUT 8 MILES NORTHEAST OF DE LEON SPRINGS...MOVING NORTHEAST AT
  35 MPH.

* THE SEVERE THUNDERSTORM WILL BE...
  NEAR DAYTONA BEACH INTL SPEEDWAY AT 420 PM EDT
  NEAR ORMOND BEACH...HOLLY HILL...DAYTONA BEACH AT 425 PM EDT
  NEAR ORMOND BY THE SEA AT 430 PM EDT

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.

LAT...LON 2924 8130 2909 8120 2937 8057 2958 8071

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 25, 3:34 PM EDT	Severe Thunderstorm Warning	MLB	Lake, Orange, Volusia	41 min
Apr 25, 4:17 PM EDT	Special Marine Warning	MLB		118 min
Apr 25, 4:27 PM EDT	Severe Thunderstorm Warning	MLB	Orange, Seminole	63 min
Apr 25, 4:33 PM EDT	Severe Thunderstorm Warning	MLB	Brevard	57 min
Apr 25, 5:00 PM EDT	Severe Thunderstorm Warning	MLB	Volusia	45 min
Apr 25, 5:28 PM EDT	Severe Thunderstorm Warning	MLB	Seminole	32 min
Apr 25, 5:29 PM EDT	Severe Thunderstorm Warning	MLB	Brevard	31 min
Apr 25, 5:41 PM EDT	Severe Thunderstorm Warning	MLB	Orange	49 min
Apr 25, 6:00 PM EDT	Severe Thunderstorm Warning	MLB	Brevard	45 min
Apr 25, 6:18 PM EDT	Special Marine Warning	MLB		117 min
Apr 25, 6:42 PM EDT	Severe Thunderstorm Warning	MLB	Brevard	63 min

Nearby

Severe Thunderstorm Warnings in Florida, 2003 Every severe thunderstorm warning in 2003

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.