Alert archive / Florida / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 62, NWS Melbourne, FL

July 2, 2003Orange County, Seminole County, Florida

NWS Melbourne, FL issued this severe thunderstorm warning at Jul 2, 2003, 4:25 PM EDT for Orange County, Seminole County, Florida. It was in force for 65 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 2, 2003, 4:25 PM EDT (20:25 UTC)
Expired
Jul 2, 2003, 5:30 PM EDT
In force
65 min
Issued by
NWS Melbourne, FL
Area
Counties, with a storm outline in the text

Counties Orange County, FL, Seminole County, FL

The radar

The Melbourne radar (KMLB), 90 km from the middle of the area, began a volume at 20:27 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.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Cape Canaveral, FL (KXMR), launched 12:00Z, 8.4 hours before the alert went out and 81 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 2003-07-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2232 joules per kilogram.LCLEL10008507005003002001001 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 2003-07-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 10 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
2232 J/kg
Mixed-layer CIN
0 J/kg
Mixed-layer LCL
477 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
10 m²/s²
0-3 km storm-relative helicity
32 m²/s²
Significant tornado parameter
0.1
Supercell composite
0.7

Open this sounding in Storm Lab

The text

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

975 
WUUS52 KMLB 022025
SVRMLB
FLC095-117-022130-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MELBOURNE FL
424 PM EDT WED JUL 2 2003

THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CENTRAL ORANGE COUNTY
  SEMINOLE COUNTY
  IN EAST CENTRAL FLORIDA

* UNTIL 530 PM EDT

* AT 422 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  A SEVERE THUNDERSTORM OVER ORLANDO EXECUTIVE AIRPORT....MOVING NORTHEAST
  AT 15 MPH.

* THIS STORM RECENTLY PRODUCED A WIND GUST TO 60 MPH AT ORLANDO 
EXECUTIVE AIRPORT.

* THE SEVERE THUNDERSTORM WILL BE...
  NEAR AZALEA PARK...MAITLAND AT 430 PM EDT
  NEAR WINTER PARK AT 435 PM EDT
  NEAR ALOMA...GOLDENROD AT 440 PM EDT
  NEAR UNION PARK AT 445 PM EDT
  NEAR WINTER SPRINGS AT 450 PM EDT
  NEAR OVIEDO AT 505 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 2886 8127 2880 8117 2887 8110 2863 8099
          2860 8110 2842 8135 2856 8151 2864 8146
          2871 8147 2886 8139

$$

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Melbourne, FL wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 2, 2:00 PM EDT, 2 hours 25 minutes earlier.

Area forecast discussion, Jul 2, 2:00 PM EDT, 2 hours 25 minutes before
EAST CENTRAL FLORIDA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MELBOURNE FL
200 PM EDT WED JUL 2 2003

.DISCUSSION...CURRENTLY/TONIGHT...SHOULD SEE ADDITIONAL DEVELOPMENT
ACROSS THE S CSTL COUNTIES INTO THE LATE AFTN AS THE EAST COAST SEA
BRZ INCHES INLAND FROM THE COAST. SCATTERED SHOWERS AND STORMS
DEVELOPING ALONG THE WEST COAST WILL ALSO MOVE ACROSS THE AREA
DURING THE LATE AFTN AND EVENING WITH SW STEERING FLOW.

THU...MODEL CONSENSUS BRINGS HIGHER MOISTURE BAND ACROSS NRN
SECTIONS ON THU TRAILING FROM THE REMNANTS OF BILL WHICH WILL
APPROACH THE DELMARVA PENINSULA. PWATS INCREASING TO 2 INCHES ON THE
ETA AND 2.2 INCHES ACCORDING TO THE GFS. E CST BRZ SHOULD BE HELD
BACK ACROSS NRN SECTIONS BUT THINK ENOUGH ACTIVITY WILL MOVE ACROSS
NRN SECTIONS IN SW FLOW FOR LIKELY POPS. ON THU ACROSS SRN
AREAS...WILL SEE GOOD CONVERGENCE ALONG THE E COAST BRZ FAVORING
THE CSTL COUNTIES FROM SRN BREVARD TO MARTIN WITH HIGHER THAN CLIMO
POPS. SHOULD BE A BIT MORE CLOUDINESS NRN SECTIONS WHICH WILL HOLD
HIGH TEMPS DOWN A FEW DEGS.

FOR THE FOURTH OF JULY...SFC RIDGE AXIS REMAINS NEAR LAKE
OKEECHOBEE. PWATS DECREASE A BIT AND LOW LVL WINDS LIGHTEN SO EXPECT
MORE TYPICAL SEA BRZ CONVECTION DAY WITH A DRIFT BACK TWD THE EAST
COAST ESPEC NORTH OF THE CAPE. CURRENT 40 POPS CLOSE TO ALL MODEL
GUIDANCE AND WILL KEEP. HIGHS FOR THE FOURTH WILL BE AROUND 90 MOST
AREAS...UPPER 80S FOR THE BEACHES.

EXTENDED...FOR SAT AND SUN...HIGHER MOISTURE WILL WORK ACROSS
CENTRAL FL AS TUTT LOW MOVES WESTWARD ACROSS THE SRN GULF. MAY
EVENTUALLY NEED TO BUMP UP INTERIOR POPS A NOTCH BUT WILL LEAVE AS
IS FOR NOW WITH MORE TYPICAL SEA BRZ REGIME FOCUSING ACTIVITY IN THE
INTERIOR IN THE LATE AFTN/EVE EACH DAY.

MARINE...WILL KEEP WINDS AT A SOLID 15 KNOTS ACROSS THE NRN LEG
TONIGHT INTO THU AS TIGHTER PRES GRADIENT SAGS SOUTH ACROSS THE
WATERS IN RESPONSE TO EXTRATROPICAL BILL MOVING TWD THE MID ATLC
COAST. FOR THE FOURTH...WILL DROP WINDS BACK TO 10-15 KNOTS NORTH
AND 10 KNOTS SOUTH. SAT AND SUN INTO EARLY NEXT WEEK WILL KEEP
SOUTHERLY FLOW ACROSS THE WATERS GENERALLY IN THE 10-15 KNOT RANGE
WITH RIDGE NEARBY.

PRELIM..
DAB TB 073/089 073/090 074 15463
MCO TB 074/089 073/091 074 15463
MLB TB 074/089 074/089 075 15363
VRB TB 074/090 074/090 074 15363

.MLB...WATCHES/WARNINGS/ADVISORIES...NONE.

PUBLIC/MARINE...VOLKMER
AVIATION/FIRE WX...SPRATT/MOSELY
Hazardous weather outlook, Jul 2, 10:10 AM EDT, 6 hours 15 minutes before
AMZ550-555-570-575-FLZ041-044>047-053-054-058-059-064-141-144-147-
022000-

EAST CENTRAL FLORIDA HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE MELBOURNE FL
1010 AM EDT WED JUL 2 2003

.DAY ONE...THROUGH THIS EVENING...
A VERY MOIST ATMOSPHERE COMBINED WITH DAYTIME HEATING WILL LEAD TO
SCATTERED LIGHTNING STORMS TODAY.  STORM MOTION WILL BE TO THE
NORTH NORTHEAST AT 10 TO 15 MPH.  THE MAIN THREATS WILL BE LOCALLY
HEAVY DOWNPOURS TO AROUND 2 INCHES...GUSTY WINDS TO 40 MPH...AND
FREQUENT LIGHTNING.

THE GREATEST COVERAGE IS EXPECTED ACROSS THE SOUTHERN COASTAL
COUNTIES IN THE EARLY TO MID AFTERNOON. NORTHERN AREAS WILL SEE MORE
SHOWERS AND STORMS IN THE LATE AFTERNOON INTO THE EARLY EVENING AS
BOUNDARIES MOVE INTO INTERIOR SECTIONS. ALSO... SHOWERS AND STORMS
THAT INITIATE ACROSS SOUTHERN SECTIONS WILL MOVE NORTHWARD. STORMS
MAY LINGER WELL INTO THE EVENING HOURS DUE THE VERY MOIST
CONDITIONS.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY...
SOUTHWEST STEERING FLOW SHOULD CONTINUE TO FOCUS STORMS NEAR THE
EAST COAST THURSDAY.  THE BERMUDA HIGH PRESSURE RIDGE IS FORECAST TO
GRADUALLY MIGRATE NORTHWARD LATE IN THE WEEK.  SCATTERED AFTERNOON
STORMS ARE EXPECTED ALL AREAS ON INDEPENDENCE DAY...WITH INLAND
AREAS BECOMING THE MORE FAVORED LOCATIONS BY THE WEEKEND.

.SPOTTER INFORMATION STATEMENT...

SPOTTERS ARE REQUESTED RELAY ANY REPORTS OF RAINFALL AMOUNTS GREATER
THAN TWO INCHES TO THE NATIONAL WEATHER SERVICE IN MELBOURNE.

FOR A GRAPHICAL VERSION OF THIS HAZARDOUS WEATHER OUTLOOK...GO TO
WWW.WEATHER.GOV AND CLICK ON EAST CENTRAL FLORIDA.

MRV

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 2, 4:06 PM EDTSpecial Marine WarningMLB84 min
Jul 2, 4:55 PM EDTSevere Thunderstorm WarningMLBOsceola50 min

Nearby

Severe Thunderstorm Warnings in Florida, 2003Every 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.