Alert archive / Florida / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 52, NWS Melbourne, FL

December 20, 2002Brevard County, Florida

NWS Melbourne, FL issued this severe thunderstorm warning at Dec 20, 2002, 10:08 AM EST for Brevard County, Florida. It was in force for 37 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: Dec 20, 2002, 10:08 AM EST (15:08 UTC)
Expired: Dec 20, 2002, 10:45 AM EST
In force: 37 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), 11 km from the middle of the area, began a volume at 15:09 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, 3.1 hours before the alert went out and 34 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: 479 J/kg
Mixed-layer CIN: -17 J/kg
Mixed-layer LCL: 576 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 219 m²/s²
0-3 km storm-relative helicity: 274 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 2.8

Open this sounding in Storm Lab

The text

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

678 
WUUS52 KMLB 201508
SVRMLB
FLC009-201545-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MELBOURNE FL
1008 AM EST FRI DEC 20 2002

THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A

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

* UNTIL 1045 AM EST

* AT 1005 AM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM NEAR ROCKLEDGE...MOVING EAST AT 45 MPH. OTHER 
  STRONG STORMS MOVING INTO SOUTHWEST BREVARD COUNTY  WILL HAVE THE 
  POTENTIAL TO BECOME SEVERE AS THE APPROACH THE COAST.

* OTHER LOCATIONS IN THE WARNING INCLUDE MERRITT ISLAND...COCOA 
  BEACH...SATELLITE BEACH AND VIERA. 

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. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE A 
TORNADO WITH LITTLE OR NO WARNING. TAKE SHELTER FROM THESE STORMS 
BEFORE THEY REACH YOUR LOCATION.


LAT...LON 2825 8089 2791 8080 2806 8035 2859 8049

$$

52

The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 20, 9:02 AM EST	Special Marine Warning	MLB		88 min
Dec 20, 9:02 AM EST	Special Marine Warning	MLB		88 min
Dec 20, 9:20 AM EST	Severe Thunderstorm Warning	MLB	Osceola	85 min
Dec 20, 11:07 AM EST	Special Marine Warning	MLB		113 min
Dec 20, 12:57 PM EST	Special Marine Warning	MLB		2 hr

Nearby

Severe Thunderstorm Warnings in Florida, 2002 Every severe thunderstorm warning in 2002

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.