Alert archive / Florida / Severe Thunderstorm Warnings in 2004

Severe Thunderstorm Warning 89, NWS Melbourne, FL

July 15, 2004Brevard County, Florida

NWS Melbourne, FL issued this severe thunderstorm warning at Jul 15, 2004, 2:39 PM EDT for Brevard County, Florida. It was in force for 36 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
Jul 15, 2004, 2:39 PM EDT (18:39 UTC)
Expired
Jul 15, 2004, 3:15 PM EDT
In force
36 min
Issued by
NWS Melbourne, FL
Area
Counties, with a storm outline in the text

County Brevard County, FL

The radar

The Melbourne radar (KMLB), 7 km from the middle of the area, began a volume at 18:39 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, 6.7 hours before the alert went out and 35 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 2004-07-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2686 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Cape Canaveral, FL at 12:00Z on 2004-07-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -12 square meters per square second.1939Sfc1 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
2686 J/kg
Mixed-layer CIN
-7 J/kg
Mixed-layer LCL
677 m above ground
0-6 km bulk shear
9 kt
0-1 km storm-relative helicity
-12 m²/s²
0-3 km storm-relative helicity
14 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 151839
SVRMLB
FLC009-151915-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MELBOURNE FL
238 PM EDT THU JUL 15 2004

THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A

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

* UNTIL 315 PM EDT

* AT 237 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  A SEVERE THUNDERSTORM OVER THE SAINT JOHNS RIVER...MOVING EAST     
  AT 25 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE INDIAN HARBOUR BEACH...     
  ...WEST MELBOURNE...SUNTREE AND VIERA

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

LAT...LON 2824 8081 2806 8080 2806 8036 2828 8038

$$

JP

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 15, 2:33 PM EDTSpecial Marine WarningMLB117 min
Jul 15, 2:37 PM EDTSpecial Marine WarningMLB68 min
Jul 15, 4:30 PM EDTSpecial Marine WarningMLB60 min
Jul 15, 5:30 PM EDTSpecial Marine WarningMLB60 min

Nearby

Severe Thunderstorm Warnings in Florida, 2004Every 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.