Isolated thunderstorms developed in an unstable atmosphere.
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 episode as NWS LIX wrote it up.
Isolated thunderstorms developed in an unstable atmosphere.
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 1, 1:29 AM CST, 10 hours 31 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE NEW ORLEANS LA 229 AM CDT SUN JUL 1 2007 .DISCUSSION... THE MAIN CONCERN WILL BE THE AMOUNT OF CONVECTION EXPECTED OVER THE FIRST HALF OF THE WEEK. A SURFACE BOUNDARY WILL SINK A LITTLE FARTHER INTO THE LOWER MISSISSIPPI VALLEY TODAY. THIS...COUPLED WITH PRECIP WATER VALUES INCREASING TO NEAR 2 INCHES...WILL BRING SCATTERED THUNDERSTORMS TO THE PCWA TODAY. MONDAY AND TUESDAY WILL ALSO SEE A THE UPPER TROUGH/LOW OVER THE SOUTHERN PLAINS SHIFT A LITTLE CLOSER TO OUR AREA WITH PRECIP WATER VALUES OVER 2 INCHES. FOR NOW WE HAVE KEPT IT MOSTLY SCATTERED CONVECTION...WITH NUMEROUS TOWARD SOUTHWESTERN MISSISSIPPI. HOWEVER THE FORECASTED COVERAGE MAY BE INCREASED LATER TODAY. PRECIP CHANCES WILL DIMINISH SOMEWHAT WEDNESDAY AND THURSDAY BEFORE INCREASING AGAIN AS ANOTHER SURFACE BOUNDARY DIPS INTO THE LOWER MISSISSIPPI VALLEY ACCOMPANIED BY AN UPPER-LEVEL TROUGH. .AVIATION... LIGHT FOG WILL AFFECT MCB EARLY THIS MORNING. THE PROB30 OF THUNDERSTORMS AT THE TERMINALS MAY BE SWITCHED TO TEMPO AT THE 12Z ISSUANCE. GUSTY WINDS WILL STILL BE A CONCERN WITH THE THUNDERSTORMS. && .PRELIMINARY POINT TEMPS/POPS... MCB 90 69 90 70 / 50 30 60 40 BTR 91 71 91 72 / 40 30 50 40 MSY 90 75 91 75 / 40 30 50 40 GPT 91 73 91 74 / 40 30 50 40 && .LIX WATCHES/WARNINGS/ADVISORIES... LA...NONE. GM...NONE. MS...NONE. GM...NONE. && 25
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE NEW ORLEANS LA 1030 AM CDT SUN JUL 1 2007 LAZ034>040-046>050-056>070-MSZ068>071-077-080>082-021100- AMITE-ASCENSION-ASSUMPTION-EAST BATON ROUGE-EAST FELICIANA-HANCOCK- HARRISON-IBERVILLE-JACKSON-LIVINGSTON-LOWER JEFFERSON- LOWER LAFOURCHE-LOWER PLAQUEMINES-LOWER ST BERNARD-LOWER TERREBONNE- ORLEANS-PEARL RIVER-PIKE-POINTE COUPEE-ST CHARLES-ST HELENA-ST JAMES- ST JOHN THE BAPTIST-ST TAMMANY-TANGIPAHOA-UPPER JEFFERSON- UPPER LAFOURCHE-UPPER PLAQUEMINES-UPPER ST BERNARD-UPPER TERREBONNE- WALTHALL-WASHINGTON-WEST BATON ROUGE-WEST FELICIANA-WILKINSON- 1030 AM CDT SUN JUL 1 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHEASTERN LOUISIANA AND SOUTHERN MISSISSIPPI. .DAY ONE...THIS AFTERNOON AND TONIGHT SCATTERED THUNDERSTORMS ARE EXPECTED THROUGH THE AFTERNOON AND EVENING HOURS. ALTHOUGH NO ORGANIZED SEVERE THUNDERSTORMS ARE EXPECTED...FREQUENT LIGHTNING...GUSTY WINDS...AND LOCALLY HEAVY RAINFALL WILL BE POSSIBLE WITH THE STRONGER STORMS. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY THUNDERSTORMS ARE POSSIBLE EACH DAY THROUGH SATURDAY...MAINLY DURING THE AFTERNOON AND EARLY EVENING HOURS. ALTHOUGH NO ORGANIZED SEVERE THUNDERSTORMS ARE EXPECTED DURING THE OUTLOOK PERIOD...FREQUENT LIGHTNING...GUSTY WINDS...AND LOCALLY HEAVY RAINFALL WILL BE POSSIBLE WITH SOME OF THE STRONGER STORMS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED.
LAZ059-060-065-011815- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE NEW ORLEANS LA 1224 PM CDT SUN JUL 1 2007 ...STRONG THUNDERSTORM MOVING EAST OF THIBODAUX... AT 1221 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM 8 MILES EAST OF THIBODAUX...MOVING EAST AT 10 MPH. THE THUNDERSTORM WILL BE NEAR... RACELAND AND MATHEWS AT 100 PM. DES ALLEMANDS AT 115 PM. THE PRIMARY THREATS FROM THIS STORM ARE SMALL HAIL...DANGEROUS CLOUD TO GROUND LIGHTNING AND WIND GUSTS OF 35 TO 45 MPH...WHICH COULD DOWN SMALL TREE LIMBS OR BRANCHES AND BLOW AROUND UNSECURED SMALL OBJECTS. SEEK SHELTER IN A SAFE HOME OR BUILDING UNTIL THE STORM HAS PASSED.
The national radar mosaic for the moment the first event began.
1 lightning. Local standard time, as filed.
Lightning struck two men fishing in a boat on Bayou du Large causing minor to moderate injuries.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Louisiana in 2007Every state in 2007This day in weather historyWarnings in Louisiana, July 2007
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: 52276.