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 New Orleans, LA wrote its last area forecast discussion before the first event at Aug 21, 2:20 PM CST, 1 hour 40 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE NEW ORLEANS/BATON ROUGE LA 320 PM CDT THU AUG 21 2003 DEBRIS FROM LAST NIGHT CONVECTION REALLY HAMPERED TEMPERATURES FROM RISING QUICKLY TODAY. ALTHOUGH LIX SOUNDING SHOWED A PW VALUE NEAR 2 INCHES AND LIFTED INDEX OF MINUS 4...ATMOSPHERE STABILIZED WITH CAPE VALUES DOWN TO 1100 J/KG. 12 AND 24 HOURS AGO...CAPE VALUES WERE AROUND 4000 J/KG. SURFACE ANALYSIS CONTINUE TO 1019MB HIGH OVER THE CAROLINAS...VERY WEAK PRESSURE GRADIENT OVER THE CENTRAL GULF COAST AND FRONTAL BOUNDARY FROM LAKE MICHIGAN TO SOUTHWEST KANSAS. UPPER AIR ANALYSIS SHOWED A LARGE ANTICYCLONIC CIRCULATION OVER THE WEST CONUS...SHORT WAVE TROUGH FROM HUDSON BAY TO LAKE MICHIGAN AND AN INVERTED TROUGH FROM THE BAY OF CAMPECHE TO NORTH CENTRAL GULF. THE INVERTED TROUGH IS EXPECTED TO MOVE WEST...THUS MAINTAINING PRECIPITABLE WATER VALUES AROUND 2 INCHES. ALTHOUGH RAIN CHANCES DID NOT PAN OUT YET WILL LINGER CHANCE POPS TONIGHT AND AROUND 50 PERCENT FRIDAY. THE UPPER LEVEL WIND FLOW WILL BECOME MORE NORTHEAST AS THE UPPER LEVEL HIGH MIGRATE EAST TO MISSOURI BY SATURDAY. THE SHORT WAVE OVER THE GREAT LAKES WILL MOVE EAST AND THE ASSOCIATED FRONTAL BOUNDARY WILL SLIDE SOUTHEAST TOWARD NORTH MISSISSIPPI SATURDAY. EXPECT THE SURFACE FRONT TO SLIDE SOUTH TO JUST NORTH OF THE FORECAST AREA BY SUNDAY. GFS ATTEMPTS TO DEVELOP A VERY WEAK LOW/INVERTED TROUGH OVER THE NORTH CENTRAL GULF SUNDAY PRODUCING NORTH WINDS ACROSS THE FORECAST AREA. NOT EXPECTING A FRONTAL PASSAGE YET. HOWEVER...PRECIP WATER VALUES DO DECREASE TO 1.7 INCHES SATURDAY. THIS DRYING IS DUE TO 850MB TO 500MB MEAN RH VALUES DROPPING TO 50 TO 60 PERCENT SATURDAY AFTERNOON AND SUNDAY ON GFS. WILL CARRY SCATTERED 30 PERCENT BOTH DAYS. SURFACE HIGH PRESSURE BEHIND THE FRONTAL BOUNDARY WILL SLIDE EAST TO THE CAROLINAS AND WEAK EAST FLOW ALOFT...MAINTAIN CLIMO POPS AND TEMPS MONDAY THROUGH THURSDAY. HERE ARE SOME NUMBERS TO PONDER... MCB 071/091 074/093 073 3523 BTR 072/090 075/092 075 3523 MSY 075/088 076/091 077 3523 GPT 075/088 077/089 076 3523 .NEW...NONE LA...NONE. MS...NONE. 18
LAZ034>040-046>050-056>070-MSZ068>071-077-080>082-221100- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE NEW ORLEANS LA 1115 AM CDT THU AUG 21 2003 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST LOUISIANA AND EXTREME SOUTHWEST AND COASTAL MISSISSIPPI. .DAY ONE...THIS AFTERNOON AND TONIGHT THUNDERSTORMS ARE EXPECTED TO DEVELOP ACROSS SOUTHEAST LOUISIANA AND SOUTH MISSISSIPPI LATER THIS AFTERNOON. THE STRONGER STORMS WILL BE CAPABLE OF PRODUCING FREQUENT LIGHTNING...SMALL HAIL AND WIND GUSTS TO 40 MPH. AN ISOLATED SEVERE STORM IS POSSIBLE DURING THE AFTERNOON AND EARLY EVENING HOURS. STORMS ARE EXPECTED TO MOVE SLOWLY. HEAVY RAINFALL FROM SLOW MOVING THUNDERSTORMS MAY CAUSE SOME MODERATE LOCALIZED FLOODING OF LOW LYING AREAS AND SECONDARY ROADWAYS. HEAT INDICES ARE EXPECTED TO BE AROUND 105 DEGREES THIS AFTERNOON IN LOCATIONS THAT DO NOT RECEIVE CLOUD COVER OR THUNDERSTORM ACTIVITY...MAINLY FOR AREAS SOUTH OF LAKE PONTCHARTRAIN. A HEAT INDEX OF 105 DEGREES IS CONSIDERED THE LEVEL WHERE MANY PEOPLE BEGIN TO EXPERIENCE EXTREME DISCOMFORT OR PHYSICAL STRESS SO CAUTION IS ADVISED IN THESE AREAS. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY SCATTERED THUNDERSTORMS ARE POSSIBLE EACH DAY THROUGH WEDNESDAY. ISOLATED SEVERE THUNDERSTORMS ARE POSSIBLE DURING THE AFTERNOONS AND EARLY EVENINGS...BUT NO ORGANIZED SEVERE WEATHER IS EXPECTED. .SPOTTER INFORMATION STATEMENT... THE ACTIVATION OF STORM SPOTTERS...HAM RADIO OPERATORS AND EMERGENCY MANAGEMENT PERSONNEL...IN SUPPORT OF SEVERE WEATHER OPERATIONS...IS NOT REQUESTED AT THIS TIME. 17
The national radar mosaic for the moment the first event began.
1 thunderstorm wind. Local standard time, as filed.
A few trees and large limbs were blown down.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Mississippi in 2003Every state in 2003This day in weather historyWarnings in Mississippi, 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: 5377100.