Isolated strong to severe 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 strong to severe 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 Jun 11, 3:34 AM CST, 9 hours 56 minutes earlier.
AREA FORECAST DISCUSSION...CORRECTION NATIONAL WEATHER SERVICE NEW ORLEANS LA 434 AM CDT MON JUN 11 2007 .SHORT TERM... WATER VAPOR LOOPS AND UPPER AIR ANALYSIS SHOWS MID/UPPER RIDGE EXTENDING FROM THE TX COAST NORTHEAST ACROSS THE LOWER MS VALLEY. THIS RIDGE HAS HAD NUMEROUS DISTURBANCES BENEATH AND RIDING OVER IT...AND THIS SHOULD CONTINUE TO BE THE CASE TODAY. ALSO...A STALLED SURFACE FRONT WILL LINGER OVER THE FORECAST AREA TODAY. FOR THAT REASON...HAVE ADDED MENTION OF ISOLATED AFTERNOON THUNDERSTORMS OVER ABOUT THE SOUTHWEST HALF OF THE AREA TODAY WHERE PRECIPITABLE WATER AND K-INDICES WILL BE SUFFICIENT FOR 15-20 PERCENT COVERAGE. DRY AIR IN THE MID LEVELS WILL REDUCE RAIN COVERAGE...HOWEVER...MODEL SOUNDINGS SHOW IMPRESSIVE LOW LEVEL THETA-E SOUTH AND WEST. STORM MOTIONS WILL LIKELY BE 5 KNOTS OR LESS TODAY...SO THE MAIN THREATS FROM THUNDERSTORMS WILL BE LOCALLY VERY HEAVY RAINFALL AMOUNTS ALONG WITH STRONG GUSTY WINDS AND POSSIBLY SMALL HAIL. BEFORE DEEP CONVECTION DEVELOPS...IT WILL BE HOT ONCE AGAIN... HOWEVER...DEW POINTS WILL BE LOW ENOUGH TO KEEP HEAT INDICES BELOW 105 DEGREES EXCEPT AT THE NORMALLY HIGH BIAS REPORTING STATIONS. HAVE A LOT OF UNCERTAINTY WITH REGARDS TO TUESDAY. MODELS SHOW A SHORTWAVE TROUGH MOVING SOUTH ACROSS THE MID ATLANTIC STATES WITH THE AFOREMENTIONED MID/UPPER RIDGE RETROGRADING WEST INTO THE SOUTHERN PLAINS. THIS WILL OPEN THE DOOR FOR AFTERNOON AND EVENING MACS ACTIVITY TO MOVE SOUTH INTO OUR AREA. THE AMOUNT OF INSTABILITY IS QUESTIONABLE...ESPECIALLY FROM THE GFS OUTPUT WHICH SHOWS EXTENSIVE MID CLOUDS HOLDING TEMPERATURES DOWN. HAVE GONE ABOVE THE MODEL MOS GUIDANCE FOR POPS WHICH BETTER MATCHES NEIGHBORING FORECAST OFFICES. && .LONG TERM... MID/UPPER LEVEL TROUGH OFF THE ATLANTIC COAST WILL PERSIST THROUGH LATE IN THE WEEK. AT THE SAME TIME...A SHORTWAVE TROUGH IS EXPECTED TO MOVE SLOWLY OUT OF THE SOUTHERN ROCKIES INTO THE SOUTHERN PLAINS. THIS WILL CAUSE A NARROW RIDGE TO BE SANDWICHED IN BETWEEN OVER PORTIONS OF THE CENTRAL GULF COAST REGION. THIS MAY KEEP SOME TYPE OF SURFACE BOUNDARY AROUND...SO THERE WILL SOME POSITIVE AND NEGATIVE FACTORS TO SUPPORT THE TYPICAL DIURNAL CONVECTION. HAVE MADE ONLY MINOR CHANGES TO THE GRIDS AT THIS TIME. && .AVIATION... NO ISSUES IN THE SHORT TERM OTHER THAN SOME PATCHY MVFR FOG ALONG THE MISSISSIPPI COAST. THERE IS A LOW PROBABILITY /20 PERCENT/ OF THUNDERSTORMS AT THE TERMINALS TODAY WITH PERHAPS THE BEST SHOT AT KBTR. LOCAL FORECASTING TECHNIQUE AND GFS MODEL SOUNDINGS INDICATE A RISK OF THUNDERSTORMS HIGHEST OVER THE ATCHAFALAYA BASIN...WHICH MAY IMPACT FLIGHT CORRIDORS LEADING INTO KBTR AND KMSY FROM THE WEST LATER THIS AFTERNOON. MOST CONVECTION IN THE AREA SHOULD DISSIPATE FULLY BY 02Z. && .MARINE... VERY LIGHT PRESSURE GRADIENT THROUGH WEDNESDAY...BECOMING MORE EASTERLY AND MODERATE OVER THE CENTRAL GULF LATTER HALF OF WEEK. GFS CONTINUES TO INDICATE SOME SORT OF SURFACE LOW PRESSURE AREA DEVELOPING OVER THE WEEKEND NEAR YUCATAN THAT SWINGS INTO THE WEST-CENTRAL GULF BEFORE BECOMING ABSORBED BY UPPER LEVEL TROUGH. THIS SHOULD NOT BE A CONCERN FOR TROPICAL DEVELOPMENT AS THIS IS AN INHERENT BIAS OF THE GFS THIS TIME OF YEAR. TIGHTENING OF THE TRADE GRADIENT DOES APPEAR TO BE REAL HOWEVER AND SEAS APT TO BUILD IN RESPONSE LATER IN THE FORECAST PERIOD...PARTICULARLY IN THE OUTER WATERS. && .PRELIMINARY POINT TEMPS/POPS... MCB 95 69 93 68 / 10 10 30 10 BTR 96 71 93 71 / 20 10 30 20 MSY 94 75 92 74 / 20 10 30 20 GPT 93 72 91 71 / 10 10 20 10 && .LIX WATCHES/WARNINGS/ADVISORIES... LA...NONE. GM...NONE. MS...NONE. GM...NONE. && 22/24
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE NEW ORLEANS LA 536 AM CDT MON JUN 11 2007 GMZ530-550-555-570-575-LAZ034>040-046>050-056>070-MSZ068>071-077- 080>082-111700- LAKE PONTCHARTRAIN AND LAKE MAUREPAS- COASTAL WATERS FROM THE SOUTHWEST PASS OF THE MISSISSIPPI RIVER TO LOWER ATCHAFALAYA RIVER LA OUT 20 NM- COASTAL WATERS FROM PASCAGOULA MS TO THE SOUTHWEST PASS OF THE MISSISSIPPI RIVER OUT 20 NM- COASTAL WATERS FROM THE SOUTHWEST PASS OF THE MISSISSIPPI RIVER TO LOWER ATCHAFALAYA RIVER LA FROM 20 TO 60 NM- COASTAL WATERS FROM PASCAGOULA MS TO THE SOUTHWEST PASS OF THE MISSISSIPPI RIVER FROM 20 TO 60 NM-POINTE COUPEE-WEST FELICIANA- EAST FELICIANA-ST. HELENA-TANGIPAHOA-WASHINGTON-ST. TAMMANY- IBERVILLE-WEST BATON ROUGE-EAST BATON ROUGE-ASCENSION-LIVINGSTON- ASSUMPTION-ST. JAMES-ST. JOHN THE BAPTIST-UPPER LAFOURCHE- ST. CHARLES-UPPER JEFFERSON-ORLEANS-UPPER PLAQUEMINES- UPPER ST. BERNARD-UPPER TERREBONNE-LOWER TERREBONNE- LOWER LAFOURCHE-LOWER JEFFERSON-LOWER PLAQUEMINES- LOWER ST. BERNARD-WILKINSON-AMITE-PIKE-WALTHALL-PEARL RIVER- HANCOCK-HARRISON-JACKSON- 536 AM CDT MON JUN 11 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF GULF OF MEXICO...SOUTHEAST LOUISIANA AND SOUTHERN MISSISSIPPI. .DAY ONE...TODAY AND TONIGHT ISOLATED AFTERNOON THUNDERSTORMS ARE POSSIBLE FROM EXTREME SOUTHWEST MISSISSIPPI INTO EAST CENTRAL AND SOUTHEAST LOUISIANA...GENERALLY WEST AND SOUTH OF LAKE PONTCHARTRAIN. ANY THUNDERSTORMS THAT DEVELOP WILL BE SLOW MOVING...PERHAPS NEAR STATIONARY. BECAUSE OF THIS...SOME LOCALLY VERY HEAVY RAINFALL AMOUNTS ARE POSSIBLE. THE STRONGEST STORMS MAY ALSO PRODUCE FREQUENT LIGHTNING...STRONG GUSTY WINDS...AND SMALL HAIL. A WEAK FRONTAL BOUNDARY HAS BROUGHT DRIER AIR INTO MUCH OF SOUTH MISSISSIPPI AND ADJACENT PORTIONS OF EAST CENTRAL AND SOUTHEAST LOUISIANA. HOWEVER...HOT TEMPERATURES AND MODERATE HUMIDITY VALUES WILL PUSH HEAT INDICES UP OVER 100 DEGREES IN SOME LOCATIONS... ESPECIALLY NEAR THE SOUTHEAST LOUISIANA COAST. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY WEAK UPPER LEVEL DISTURBANCES AND A LINGERING SURFACE BOUNDARY WILL BRING A CHANCE OF MOSTLY DAYTIME THUNDERSTORMS THROUGH THE PERIOD. ISOLATED STRONG TO SEVERE THUNDERSTORMS AND LOCALLY HEAVY RAINFALL WILL BE POSSIBLE EACH DAY. .SPOTTER INFORMATION STATEMENT... THE ACTIVATION OF STORM SPOTTERS...HAM RADIO OPERATORS...AND EMERGENCY MANAGEMENT PERSONNEL IN SUPPORT OF SEVERE WEATHER OPERATIONS IS NOT EXPECTED THROUGH SUNDAY.
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE NEW ORLEANS LA 211 PM CDT MON JUN 11 2007 LAZ034>037-047-048-MSZ068>071-112015- AMITE-EAST BATON ROUGE-EAST FELICIANA-PIKE-POINTE COUPEE-ST HELENA- WALTHALL-WEST BATON ROUGE-WEST FELICIANA-WILKINSON- 211 PM CDT MON JUN 11 2007 ...SCATTERED THUNDERSTORMS ACROSS SOUTHWEST MISSISSIPPI AND EAST CENTRAL LOUISIANA... SCATTERED THUNDERSTORMS WILL CONTINUE TO DEVELOP ACROSS SOUTHWEST MISSISSIPPI AND EAST CENTRAL LOUISIANA DURING THE AFTERNOON HOURS. SOME OF THESE THUNDERSTORMS WILL PRODUCE FREQUENT LIGHTNING... WIND GUSTS TO 45 MPH...AND HEAVY DOWNPOURS OF RAIN AS THEY DRIFT SLOWLY SOUTHWEST. ISOLATED RAINFALL AMOUNTS OF ONE TO TWO INCHES IN A SHORT PERIOD OF TIME WILL BE POSSIBLE WITH SOME OF THE THUNDERSTORMS AND MAY RESULT IN THE FLOODING OF SOME ROADWAYS AND LOW LYING AREAS.
The national radar mosaic for the moment the first event began.
1 thunderstorm wind. Local standard time, as filed.
Thunderstorm winds knocked down trees and power lines. The roof and garage of a house was damaged by a falling tree.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Mississippi in 2007Every state in 2007This day in weather historyWarnings in Mississippi, June 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: 45941.