Alert archive / Florida / Severe Thunderstorm Warnings in 2004

Severe Thunderstorm Warning 9, NWS Melbourne, FL

April 8, 2004Volusia County, Florida

NWS Melbourne, FL issued this severe thunderstorm warning at Apr 8, 2004, 1:41 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 8, 2004, 1:41 PM EDT (17:41 UTC)
Expired: Apr 8, 2004, 2:25 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), 99 km from the middle of the area, began a volume at 17:40 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.

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 8, 10:45 AM EDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Cape Canaveral, FL (KXMR), launched 12:00Z, 5.7 hours before the alert went out and 80 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: 213 J/kg
Mixed-layer CIN: -110 J/kg
Mixed-layer LCL: 790 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 44 m²/s²
0-3 km storm-relative helicity: 72 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

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

000 
WUUS52 KMLB 081741
SVRMLB
FLC127-081825-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MELBOURNE FL
140 PM EDT THU APR 8 2004

THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A

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

* UNTIL 225 PM EDT

* AT 135 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM OVER LAKE MONROE...MOVING EAST AT 35 MPH.

* THE SEVERE THUNDERSTORM WILL BE...
  NEAR OSTEEN AT 145 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 2894 8129 2878 8137 2878 8096 2894 8095

$$

15

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 8, 12:51 PM EDT	Severe Thunderstorm Warning	MLB	Volusia	39 min
Apr 8, 12:55 PM EDT	Special Marine Warning	MLB		2 hr
Apr 8, 1:46 PM EDT	Severe Thunderstorm Warning	MLB	Seminole	44 min
Apr 8, 2:37 PM EDT	Severe Thunderstorm Warning	MLB	Orange	53 min
Apr 8, 3:00 PM EDT	Special Marine Warning	MLB		2 hr
Apr 8, 3:00 PM EDT	Special Marine Warning	MLB		2 hr
Apr 8, 3:18 PM EDT	Severe Thunderstorm Warning	MLB	Brevard	57 min
Apr 8, 4:35 PM EDT	Special Marine Warning	MLB		115 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.