1 lightning, as filed by the National Weather Service.
Every event with a place to put it; 1 filed by county or forecast zone are drawn at its center, in a lighter ring. 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 Jul 21, 2:45 PM CST, 1 hour 2 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE NEW ORLEANS/BATON ROUGE LA 345 PM CDT MON JUL 21 2003 MODELS CONTINUE TO ADVERTISE THE AMPLIFYING UPPER PATTERN WITH AN EXPANSIVE AND BUILDING HIGH IN THE WEST AND A DEEPENING TROUGH OVER THE EASTERN CONUS THROUGH WEDNESDAY. MINOR SHORTWAVE ENERGY WILL DROP SOUTHEAST ACROSS THE LOWER MS VALLEY ON TUESDAY THEN A STRONGER SHORTWAVE TROUGH IS EXPECTED TUESDAY NIGHT AND WEDNESDAY. THIS WILL PUSH A COLD FRONT INTO SOUTHEAST LA AND SOUTH MS ON WEDNESDAY THEN THE FRONT IS EXPECTED TO STALL NEAR THE COAST OR NEAR SHORE COASTAL WATERS WEDNESDAY NIGHT THROUGH EARLY FRIDAY BEFORE DISSIPATING LATER FRIDAY. PVA/COLD AIR ALOFT AND THE UNSEASONABLE PRESENCE OF A COLD FRONT COMBINED WITH NORMAL HEAT AND HUMIDITY WILL BRING A CHANCE OF SEVERE THUNDERSTORMS TUESDAY AFTERNOON INTO WEDNESDAY. DRIER AIR WILL WORK SOUTH BOTH AT THE SURFACE AND ALOFT WEDNESDAY NIGHT INTO THURSDAY...POSSIBLY INTO EARLY FRIDAY. POPS WILL DROP TO A SLIGHT CHANCE OR LESS...ESPECIALLY ACROSS THE NORTHERN ZONES THURSDAY AND FRIDAY. DRIER AIR AT THE SURFACE NOW APPEARS LIKE IT WILL ALLOW TEMPERATURES TO FALL INTO THE MID TO UPPER 60S IN SOUTHWEST MS AND THE UPPER 60S TO NEAR 70 FROM EAST CENTRAL LA TO THE MS COAST. MORE NORMAL SUMMER CONDITIONS WILL RETURN OVER THE WEEKEND ALONG WITH NEAR NORMAL CHANCES OF AFTERNOON SHOWERS AND THUNDERSTORMS AND INCREASING HUMIDITY. SPECIAL NOTE...TROPICAL DEPRESSION SIX WAS JUST DOWNGRADED TO A TROPICAL WAVE. MCB 75/90/72/88 2465 BTR 77/91/74/88 2355 MSY 77/91/77/87 2446 GPT 76/88/76/87 2456 .NEW...NONE LA...NONE. MS...NONE. 22
LAZ034>040-046>050-056>070-MSZ068>071-077-080>082-221100- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE NEW ORLEANS LA 1130 AM CDT MON JUL 21 2003 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST LOUISIANA AND EXTREME SOUTHWEST AND COASTAL MISSISSIPPI. .DAY ONE...TODAY AND TONIGHT ...THUNDERSTORMS... SCATTERED SHOWERS AND THUNDERSTORMS ARE EXPECTED TO DEVELOP AS DAYTIME HEATING INCREASES. THE ACTIVITY WILL REACH A PEAK DURING THE AFTERNOON AND BEGIN TO DIMINISH DURING THE EARLY EVENING HOURS. ATMOSPHERIC CONDITIONS ARE FAVORABLE FOR A FEW THUNDERSTORMS TO APPROACH SEVERE LIMITS WITH WIND GUSTS OF 50 TO 60 MPH AND HAIL. THE STRONGER THUNDERSTORMS WILL ALSO PRODUCE FREQUENT LIGHTNING AND LOCALLY VERY HEAVY RAINFALL AMOUNTS OF 2 TO 4 INCHES IN 3 HOURS OR LESS. ...SEASONAL THREATS... AFTERNOON TEMPERATURES ARE EXPECTED TO CLIMB INTO THE LOWER 90S IN MOST LOCATIONS WITH HEAT INDICES RISING TO AROUND 105 DEGREES OUTSIDE OF RAIN AREAS. PEOPLE SPENDING TIME OUTDOORS SHOULD LIMIT EXPOSURE TO THE DIRECT SUN AND DRINK PLENTY OF WATER. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY ...TUESDAY AND WEDNESDAY... SCATTERED SHOWERS AND THUNDERSTORMS ARE EXPECTED TUESDAY. THUNDERSTORMS WILL BECOME MORE NUMEROUS ALONG AND AHEAD OF A COLD FRONT THAT IS EXPECTED TO MOVE INTO SOUTHEAST LOUISIANA AND SOUTH MISSISSIPPI TUESDAY NIGHT AND WEDNESDAY. THE UNUSUAL OCCURRENCE OF A MID SUMMER COLD FRONT COMBINED THE TYPICAL HOT AND HUMID CONDITIONS WILL MAKE THE ATMOSPHERE VERY UNSTABLE. THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS OVER MOST OF THE CENTRAL GULF COAST REGION TUESDAY AND WEDNESDAY. ...THURSDAY THROUGH SUNDAY... THE CHANCE OF SHOWERS AND THUNDERSTORMS WILL DECREASE THURSDAY AND FRIDAY AS DRIER AIR MOVES IN FROM THE NORTH. SCATTERED MAINLY AFTERNOON SHOWERS AND THUNDERSTORMS ARE EXPECTED TO RETURN AGAIN SATURDAY AND SUNDAY AS MOISTURE IN THE ATMOSPHERE INCREASES. .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.
The Mobile radar (KMOB), 44 km away, was scanning. The volume nearest the first event began at 21:47 UTC.
1 lightning. Local standard time, as filed.
A lightning strike at a gas station caused minor damage.
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, July 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: 5372813.