Alert archive / Florida / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 53, NWS Melbourne, FL

July 21, 2000Saint Lucie County, Florida

NWS Melbourne, FL issued this severe thunderstorm warning at Jul 21, 2000, 6:15 PM EDT for Saint Lucie County, Florida. It was in force for 45 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jul 21, 2000, 6:15 PM EDT (22:15 UTC)
Expired
Jul 21, 2000, 7:00 PM EDT
In force
45 min
Issued by
NWS Melbourne, FL
Area
Whole counties

County Saint Lucie County, FL

The radar

The Melbourne radar (KMLB), 84 km from the middle of the area, began a volume at 22:16 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, 10.3 hours before the alert went out and 121 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 2000-07-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 589 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 2000-07-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -2 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
589 J/kg
Mixed-layer CIN
-166 J/kg
Mixed-layer LCL
1256 m above ground
0-6 km bulk shear
9 kt
0-1 km storm-relative helicity
-2 m²/s²
0-3 km storm-relative helicity
60 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.

541 
WUUS52 KMLB 212217
SVRMLB
FLC111-212300-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MELBOURNE FL
615 PM EDT FRI JUL 21 2000

THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A

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

* UNTIL 700 PM EDT

* AT 605 PM EDT...THE PUBLIC REPORTED A SEVERE THUNDERSTORM OVER PORT
  SAINT LUCIE...THE STORM WAS MOVING LITTLE.

* OTHER LOCATIONS IN THE WARNING INCLUDE SAINT LUCIE WEST...SAINT
  LUCIE AIRPORT...QUEENS COVE...PORT SAINT LUCIE RIVER PARK...INDIAN
  RIVER ESTATES...FORT PIERCE SOUTH AND FORT PIERCE NORTH

REPORTS OF DAMAGE HAVE BEEN RECEIVED WITH THIS STORM. TREES WERE DOWNED
AND A TRAILER WAS FLIPPED.

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 2721 8044 2723 8024 2753 8032 2742 8060

55

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 20, 8:18 PM EDTSevere Thunderstorm WarningMLBOrange57 min

Nearby

Severe Thunderstorm Warnings in Florida, 2000Every severe thunderstorm warning in 2000

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.