1 thunderstorm wind, as filed by the National Weather Service.
Every event with a place to put it. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The local office's own words before the first event, 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 the first event at Aug 20, 1:45 PM EST, 1 hour 45 minutes earlier.
EAST CENTRAL FLORIDA FORECAST DISCUSSION NATIONAL WEATHER SERVICE MELBOURNE FL 245 PM EDT WED AUG 20 2003 .DISCUSSION... CONVECTION NOT ESPECIALLY WELL ORGANIZED ATTM. DIFFUSE EAST COAST BNDRY HAS PUSHED INLAND WITH ASSOCIATED CONVECTION ACROSS THE INTERIOR. MORE ORGANIZED ACTVTY ASSOCIATED WITH MID LVL INVERTED TROF AND VORT LOBE OVER S FL. VERY SLOW ONSET OF WEST COAST BREEZE WITH BNDRY STILL OVER COASTAL CTYS. EXPECT REMAINING CONVECTION TO CONTINUE TO PUSH WEST WITH ANY SIGNIFICANT BNDRY INTERACTIONS WITH WEST COAST BREEZE TO OCCUR WEST OF AREA AND PERHAPS WRN LAKE CTY. BOTH GFS AND SHORT RANGE MDLS KEEP HIGH MOISTURE VALUES AND EVEN PCPN IN THE OVERNIGHT HOURS. MID LEVEL VORT TO SOUTH MOVES LITTLE AND WEAKENS WHILE STEERING FLOW DOES NOT FAVOR LATE NIGHT COASTAL SHRA. FEEL PCPN SHOULD PRETTY MUCH COME TO AN END EARLY THIS EVE AS DIURNAL CYCLE ENDS. THU-SUN...ETA AND GFS BEGINS TO ADVECT SOME DRIER AIR FROM THE EAST THU AND ESP FRIDAY. APPEARS DEEP MOISTURE WILL HANG ON FOR ONE MORE DAY (THU) ACROSS NORTH AND WEST PORTIONS. THINK AVN MOS POPS ARE TOO HIGH...SO WILL LEAN TOWARD THE ETA POPS INCREASING THEM TO 60% FOR DAB/MCO IN THE OFFICIAL FORECAST. FRI SHOULD BE MUCH DRIER ESP SOUTH AND EAST PORTIONS (20%) TRENDING UP TO 40% IN LAKE COUNTY. WEAK FRONT DROPS INTO THE DEEP SOUTH OVER THE WEEKEND WHICH WILL WEAKEN AND SUPPRESS THE RIDGE AXIS...AND VEERING THE SFC-H7 FLOW. SHOULD SEE POPS INCREASE BACK TOWARD CLIMO VALUES SAT AND POSSIBLY ABOVE CLIMO SUN DAB/LEE/SFB AS GFS SHOWS BAND OF DEEP MOISTURE SETTLING SOUTH DOWN THE PENINSULA. LIGHT WINDS EACH OF THE 4 DAYS WILL ALLOW THE EAST COAST SEA BREEZE TO DEVELOP AND MOVE INLAND. MON-WED...EXTENDED GFS SHOWS 1025 MB HIGH PUSHING SOUTHEAST TO THE CAROLINA COAST BY WED AND WEAKENING TO 1021 MB. THIS WOULD INCREASE THE NORTHEAST GRADIENT WIND BY WED PRODUCING BREEZY CONDITIONS... EVEN WINDY ALONG THE VOLUSIA COAST. WILL SHOW THIS IN THE EXTENDED WIND GRIDS. ALTHOUGH THIS SFC HIGH WILL HAVE CANADIAN ORIGINS...MOST OF THE COLD ADVECTION WILL PASS WELL TO OUR NORTH AND EAST...SO COOLING SHOULD BE MINIMAL. TROPICS...GFS BRINGS A TROPICAL WAVE WEST ACROSS THE NORTHERN CARIBBEAN OVER THE WEEKEND...KEEPING IT WELL SOUTH OF THE AREA AND SHOWING LITTLE DEVELOPMENT. BOTH THE GFS AND ECMWF TAKE THE NEXT WAVE ON A MORE NORTHERN TRACK...JUST NORTH OF PUERTO RICO BY TUE MORN. A WEAKNESS IN THE UPPER RIDGE SHOULD PULL THIS FEATURE NORTH AND AWAY FROM THE AREA MIDWEEK. .MARINE...WITH RIDGE AXIS ACROSS NORTH/CENTRAL FLORIDA NEXT SEVERAL DAYS...WINDS AND SEAS WILL REMAIN AOB 10KTS AND SEAS 2 FEET OR LESS (OUTSIDE CONVECTION) THROUGH THE WEEKEND. GRADIENT WIND OUT OF THE NORTHEAST MAY PICK UP TUE/WED AS HIGH PRESSURE BUILDS SOUTHEAST OVER THE AREA. ...PRELIMINARY POINT TEMPS/POPS... DAB TB 073/087 073/090 073 26332 MCO TB 073/089 074/090 073 36332 MLB TB 074/087 074/089 074 25221 VRB BB 074/087 074/089 074 24221 .MLB WATCHES/WARNINGS/ADVISORIES...NONE. SHORT TERM...BLOTTMAN LONG TERM...KELLY
AMZ550-555-570-575-FLZ041-044>047-053-054-058-059-064-141-144-147- 202000- EAST CENTRAL FLORIDA HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE MELBOURNE FL 11 AM EDT WED AUG 20 2003 .DAY ONE...TODAY ...SCATTERED THUNDERSTORMS WILL PRODUCE LOCALIZED HEAVY RAINFALL... THE ATMOSPHERE CONTINUES TO BE VERY MOIST...AND WHEN COMBINED WITH THE INTERACTION OF THE EAST AND WEST COAST SEA BREEZES OVER THE INTERIOR...SCATTERED LIGHTNING STORMS ARE EXPECTED AGAIN TODAY. A FEW STORMS WILL INITIALLY FORM OVER THE COASTAL COUNTIES EARLY THIS AFTERNOON AS THE EAST COAST SEA BREEZE WORKS ITS WAY INLAND. STORMS WILL INCREASE IN COVERAGE AND INTENSITY AS THE TWO SEA BREEZES INTERACT OVER THE WESTERN SECTIONS OF THE INTERIOR COUNTIES LATER IN THE AFTERNOON. STORM MOTION WILL BE NORTH AT 10 TO 15 MPH. THE MAIN THREATS FROM STORMS WILL BE FLOODING FROM VERY HEAVY RAINS AND FREQUENT LIGHTNING. IF YOU HEAR THUNDER...YOU ARE WITHIN RANGE OF A THUNDERSTORM AND SHOULD SEEK SHELTER IMMEDIATELY. ADDITIONAL RAINFALL FROM QUICK HEAVY DOWNPOURS COULD FURTHER AGGRAVATE ONGOING STANDING WATER PROBLEMS IN NORTHWEST OSCEOLA...SOUTHWEST ORANGE AND LAKE COUNTIES. RESIDENTS WITH STANDING WATER ALREADY SURROUNDING THEIR HOMES SHOULD TAKE MEASURES TO SAFEGUARD PROPERTY...BY ACQUIRING SAND BAGS TO PLACE AROUND THE HOME AND MOVING VALUABLES TO A SAFE LOCATION. BE PREPARED TO EVACUATE FROM FLOOD PRONE AREAS IF WATER LEVELS RISE OR A FLOOD WARNING IS ISSUED. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH SUNDAY: A LIGHT SURFACE WIND REGIME WILL ALLOW DAILY SEA BREEZES TO FORM AND MERGE OVER THE INTERIOR SECTIONS OF THE PENINSULA EACH DAY. SOUTHWEST TO WEST STEERING FLOW WILL HELP TO PUSH THE STORMS BACK TOWARD THE EAST COAST. ON MONDAY AND TUESDAY...A DEEPENING EASTERLY FLOW WILL SHIFT STORMS TO THE WESTERN SECTIONS OF EAST CENTRAL FLORIDA. .SPOTTER INFORMATION STATEMENT... SKYWARN SPOTTER ACTIVATION IS NOT EXPECTED TODAY. FOR A GRAPHICAL VERSION OF THIS HAZARDOUS WEATHER OUTLOOK...GO TO WWW.WEATHER.GOV AND CLICK ON EAST CENTRAL FLORIDA. WIMMER
The Melbourne radar (KMLB), 96 km away, was scanning. The volume nearest the first event began at 20:29 UTC.
1 thunderstorm wind. Local standard time, as filed.
Thunderstorm winds damaged the roof and windows of a house northwest of Okeechobee.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Florida in 2003Every state in 2003This day in weather historyWarnings in Florida, August 2003
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 5374894.