A narrow squall line of strong to severe thunderstorms tracked along a potent cold front which tracked east across the Ohio and Tennessee Valleys. Although deep layer wind shear was present, reports of severe weather were isolated with these thunderstorms as they entered northwest Alabama due to weak instability.
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 HUN wrote it up.
A narrow squall line of strong to severe thunderstorms tracked along a potent cold front which tracked east across the Ohio and Tennessee Valleys. Although deep layer wind shear was present, reports of severe weather were isolated with these thunderstorms as they entered northwest Alabama due to weak instability.
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 Huntsville, AL wrote its last area forecast discussion before the first event at Apr 11, 9:25 AM CST, 2 hours 35 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE HUNTSVILLE AL 1025 AM CDT WED APR 11 2007 .UPDATE... A LINE OF SHOWERS AND THUNDERSTORMS WAS SWEEPING ACROSS THE CENTRAL REGION EXTENDING ROUGHLY FROM NORTH OF WINCHESTER TO WEST SW CULLMAN COUNTY. NONE OF THE STORMS HAVE BEEN SEVERE. EAST OF THIS LINE OF SHOWERS...WINDS HAVE BEEN GUSTING AT TIMES TO 30 MPH...ASSOCIATED WITH A STRONG SOUTHERLY FLOW MOVING INTO DEVELOPING LOW PRESSURE OVER THE MID MISSISSIPPI VALLEY. WINDS WEST OF THE LINE OF SHOWERS HAVE BEEN OVERALL DECREASING. HAVE CONTINUED A SPECIAL WX STATEMENT FOR GUSTY WINDS FOR NE ALABAMA AND FRANKLIN COUNTY OF SOUTHERN MIDDLE TENNESSEE THOUGH 1130 AM. CLOUDY SKIES OTHERWISE PREVAILED ACROSS REGION WITH TEMPERATURES RANGING FROM 52 AT FT PAYNE TO 59 AT MUSCLE SHOALS. NEW GUIDANCE FROM THIS MORNINGS RUN WAS SHOWING REDEVELOPMENT OF CONVECTION LATE THIS MORNING AND EARLY AFTERNOON OVER NW ALABAMA. CLOUDS OVER NORTHERN MISSISSIPPI WILL PROBABLY STAY OVERCAST OVER NW ALABAMA. THIS SHOULD LIMIT DAYTIME HEATING...AND HIGHER CHANCES OF SOME OF THOSE STORMS BECOMING STRONG TO SEVERE FOR THAT AREA. NOT SO CERTAIN WITH OUR CENTRAL AND EASTERN COUNTIES THIS AFTERNOON...BUT AM LEANING TOWARD A NON-SEVERE SITUATION. UPDATE WISE...WILL REDUCE WINDS ACROSS THE WESTERN AND CENTRAL COUNTIES TO THE 10-20 MPH RANGE...AND KEEP THEM UP INTO THE EARLY AFTERNOON FOR THE EASTERN COUNTIES. WITH MORE SHOWERS DEVELOPING OVER NORTHERN MISSISSIPPI...WILL CONTINUE A LIKELY CHANCE OF SHOWERS INTO THE EARLY/MID AFTERNOON FOR THE ENTIRE AREA. RSB && .PREV DISCUSSION.... UPDATE ISSUED AT 635 AM... NOW SEEING A CLEARLY-DEFINED BOUNDARY ACROSS EXTREME NERN MISSISSIPPI...DOWN TO NEAR KJAN. THIS BOUNDARY SEEMS TO BE THE FOCUS FOR SHRA/TSRA DEVELOPMENT JUST AHEAD OF THE ORIGINAL LINE OF STORMS. AFTER COLLABORATION WITH SPC...BELIEVE THIS IS GOING TO BE OUR MAIN EVENT OF THE DAY...FOLLOWED BY SPORADIC SHOWERS AND A FEW REMAINING EMBEDDED THUNDERSTORMS. SEVERE POTENTIAL STILL SEEMS FAIRLY LIMITED AT PRESENT BUT IF SOME SUNSHINE CAN BE REALIZED THROUGH THE DAY AS THE PRECIP MOVES EAST...THERE COULD STILL BE A THREAT. WILL STILL WATCH FOR DEVELOPMENT BEHIND THE INITIAL BAND AS WELL BUT THIS NOW SEEMS LIKE A SECONDARY ISSUE...BARRING CLOUDS BREAKING UP. BRIEF HEAVY DOWNPOURS LOOK LIKE A BETTER BET...WITH MULTIPLE ROUNDS OF RAIN POSSIBLE IN SOME LOCATIONS. THIS MAY ACTUALLY BE MORE WELCOME NEWS THAN A CONCERN FOR MOST. && SHORT TERM (TODAY THROUGH THURSDAY NIGHT)... ISSUED EARLIER AT 350 AM... INITIAL LINE OF STORMS REACHES THE NW CORNER BY 12Z AND PROGRESSES ACROSS THIS MORNING. MAIN THREAT WITH THIS COMPLEX IS GUSTY WINDS AND LARGE HAIL. ALSO CONCERNED ABOUT WINDS THIS MORNING...ALREADY KHSV IS 22G29MPH. CONDITIONS LOOK BORDERLINE FOR WIND ADVISORY THROUGH ABOUT 18Z BEFORE PRESSURE GRADIENT RELAXES. AM STILL PONDERING THIS AND WOULD LIKE TO SEE 09Z OBS AND PREFERABLY THE 09Z LAMP GUIDANCE BEFORE MAKING A CALL. SFC BOUNDARY IS FCST TO BE BETWEEN KMSL AND KHSV BY 18Z...AND OUT OF THE AREA ENTIRELY BY 00Z. WILL BEGIN TAPERING DOWN POPS DURING THE AFTERNOON WEST OF I-65. HIGHS TODAY WILL PROBABLY BE POST-BOUNDARY WEST OF I-65 AS WARM WEST WINDS PUSH IN. OTHER THAN A LINGERING SLT CHC IN THE MOUNTAINS THIS EVENING...THE REST OF THE SHORT TERM LOOKS DRY. IT DOES NOT...HOWEVER...LOOK AS WARM AS PREVIOUSLY EXPECTED DUE TO A LITTLE INTRUSION OF DRIER AIR WHICH WILL KEEP MIN TEMPS LOWER THAN PREVIOUSLY EXPECTED. WITH CLEAR SKIES LIKELY THURSDAY NIGHT...LOWS SHOULD RAPIDLY DROP TO THE LOWER 40S (MAYBE EVEN UPPER 30S) BUT COULD RISE AFTER MIDNIGHT AS MID CLOUDS DEVELOP. THANKS TO SURROUNDING OFFICES FOR EXTREMELY HELPFUL COLLABORATION AND COORDINATION THIS MORNING EXTENDED (FRIDAY THROUGH TUESDAY)... THIS LATE WEEK SYSTEM IS GOING TO GIVE US FITS. YESTERDAY IT APPEARED THE HIGH ON FRIDAY COULD BE IN THE MID 80S. NOW MODELS ARE SHOWING GOOD CONSISTENCY IN COOL EASTERLY FLOW AND THE AREA NEAR OR SOUTH OF A SFC WARM FRONT. IF THAT VERIFIES...WE MAY STAY IN THE 60S ALL DAY NEW FORECAST IS ABOUT 10 DEGREES COOLER THAN PREVIOUS BUT ABOUT 5 ABOVE GUIDANCE VALUES. LATEST FCST MODELS HAVE SPED UP THE SYSTEM INTO FRIDAY NIGHT...A LESS FAVORABLE TIME FOR SEVERE WEATHER...AND THEY SHOW SFC DEWPOINTS STILL IN THE 40S AT 00Z SATURDAY WITH THAT SAID...WIND PROFILES SHOW A LOT OF SHEAR...SO IF THE UNSTABLE AIRMASS CAN PUSH NORTHWARD...SEVERE WILL BE A STRONG POSSIBILITY FRIDAY NIGHT AND/OR SATURDAY MORNING EVEN WITH THIS CHANGED SETUP. WE WILL HAVE TO KEEP WATCHING THIS CLOSELY...AND PLEASE MONITOR THE LATEST FORECASTS FOR UPDATES ON THE SEVERE POTENTIAL. LEFT POPS ALONE...LIKELY LATE FRIDAY NIGHT AND SATURDAY MORNING. AFTER THAT SYSTEM PASSES...COOLER TEMPS ARE IN STORE FOR THE REST OF THE WEEKEND...WITH LOWS POSSIBLY IN THE 30S SATURDAY NIGHT AND SUNDAY NIGHT...AND HIGHS SUNDAY STRUGGLING TO REACH 60. A WARMING TREND WITH DRY WEATHER IS EXPECTED EARLY NEXT WEEK AS RIDGING BUILDS OVER THE SERN CONUS. ANOTHER SYSTEM IS PROGGED BY THE GFS FOR THE MIDDLE OF NEXT WEEK. && .PRELIMINARY POINT TEMPS/POPS... HUNTSVILLE 69 45 69 41 / 70 10 0 10 SHOALS 69 44 68 41 / 70 10 0 10 CULLMAN 69 45 69 42 / 70 10 0 10 FAYETTEVILLE 67 43 67 40 / 70 10 0 10 ALBERTVILLE 69 45 70 41 / 70 10 0 10 FORT PAYNE 67 45 68 41 / 70 20 0 10 && .HUN WATCHES/WARNINGS/ADVISORIES... AL...NONE. TN...NONE. && JE/23 / RSB
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE HUNTSVILLE AL 1215 PM CDT WED APR 11 2007 ALZ001>010-016-TNZ076-096-097-121100- LAUDERDALE-COLBERT-FRANKLIN AL-LAWRENCE-LIMESTONE-MADISON-MORGAN- MARSHALL-JACKSON-DE KALB-CULLMAN-MOORE-LINCOLN-FRANKLIN TN- 1215 PM CDT WED APR 11 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH ALABAMA AND PORTIONS OF SOUTHERN MIDDLE TENNESSEE. .DAY ONE...THIS AFTERNOON AND TONIGHT... A LINE OF SHOWERS AND THUNDERSTORMS OVER NORTHERN MISSISSIPPI WILL MOVE ACROSS THE TENNESSEE VALLEY THIS AFTERNOON. SOME OF THOSE STORMS COULD BECOME STRONG TO SEVERE. THE MAIN RISKS FROM STORMS THAT BECOME SEVERE INCLUDE WIND GUSTS TO 60 MPH AND NICKEL SIZED HAIL. THE LINE OF THUNDERSTORMS SHOULD REACH FAR NORTHWEST ALABAMA BY 1230 PM...THE MUSCLE SHOALS AREA BETWEEN 1 TO 2 PM...THE I-65 CORRIDOR AROUND 3 PM...AND THE NORTHEAST AREAS AROUND 5 PM. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY... A STRONGER STORM SYSTEM WILL BRING ANOTHER ROUND OF SHOWERS AND THUNDERSTORMS TO THE AREA FROM FRIDAY NIGHT INTO SATURDAY. SOME OF THESE STORMS MAY BECOME STRONG TO SEVERE. .SPOTTER CALL TO ACTION STATEMENT... ACTIVATION OF STORM SPOTTERS AND EMERGENCY MANAGEMENT PERSONNEL IS POSSIBLE BUT UNLIKELY AT THIS TIME. RSB
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HUNTSVILLE AL 800 AM CDT WED APR 11 2007 ALZ001>010-016-TNZ076-096-097-111500- COLBERT-CULLMAN-DE KALB-FRANKLIN AL-FRANKLIN TN-JACKSON-LAUDERDALE- LAWRENCE-LIMESTONE-LINCOLN-MADISON-MARSHALL-MOORE-MORGAN- 800 AM CDT WED APR 11 2007 ...GUSTY WINDS THIS MORNING DRIVE ACROSS NORTHERN ALABAMA AND SOUTHERN MIDDLE TENNESSEE... STRONG HIGH PRESSURE OVER THE ATLANTIC COAST AND A DEVELOPING STRONG STORM SYSTEM IN THE MISSISSIPPI RIVER VALLEY...WAS PRODUCING STRONG GUSTY SOUTHERLY WINDS ACROSS NORTHWEST AND NORTH CENTRAL ALABAMA... AND LINCOLN COUNTY TENNESSEE. WINDS OF 15 TO 25 MPH...WITH GUSTS TO 30 MPH CAN BE EXPECTED. WHILE WINDS WILL GRADUALLY DECREASE ACROSS NORTHWEST ALABAMA...WINDS ARE EXPECTED TO INCREASE ACROSS NORTHEAST ALABAMA...AND MOORE AND FRANKLIN COUNTIES IN TENNESSEE. WINDS ACROSS THE CENTRAL AND EASTERN AREAS WILL DECREASE AFTER 10 AM...OR AFTER THE HEAVIEST AND EMBEDDED THUNDERSTORMS MOVE EAST OF THE REGION. MOTORISTS SHOULD BE ALERT FOR SUDDEN GUSTS OF WIND...PARTICULARLY IN HIGH PROFILE VEHICLES...AND ON WEST-EAST RUNNING HIGHWAYS. STAY TUNED TO NOAA WEATHER RADIO...OR A FAVORITE LOCAL MEDIA OUTLET...FOR FURTHER STATEMENTS OR UPDATES FROM THE NATIONAL WEATHER SERVICE IN HUNTSVILLE. RSB
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HUNTSVILLE AL 1000 AM CDT WED APR 11 2007 ALZ008>010-TNZ097-111630- DE KALB-FRANKLIN TN-JACKSON-MARSHALL- 1000 AM CDT WED APR 11 2007 ...GUSTY WINDS WILL AFFECT NORTHEAST ALABAMA AND FRANKLIN COUNTY TENNESSEE... STRONG HIGH PRESSURE OVER THE ATLANTIC COAST AND A DEVELOPING STORM SYSTEM IN THE MISSISSIPPI RIVER VALLEY...WAS PRODUCING STRONG SOUTHERLY WINDS ACROSS NORTHEAST ALABAMA...AND FRANKLIN COUNTY TENNESSEE. WINDS OF 15 TO 25 MPH...WITH GUSTS TO 30 MPH CAN BE EXPECTED. WINDS WILL GRADUALLY DECREASE ACROSS THIS REGION BEFORE NOON...OR AFTER THE HEAVIEST SHOWERS AND THUNDERSTORMS HAVE MOVED EAST OF THE REGION. MOTORISTS SHOULD BE ALERT FOR SUDDEN GUSTS OF WIND...PARTICULARLY IN HIGH PROFILE VEHICLES...AND ON WEST-EAST RUNNING HIGHWAYS. STAY TUNED TO NOAA WEATHER RADIO...OR A FAVORITE LOCAL MEDIA OUTLET...FOR FURTHER STATEMENTS OR UPDATES FROM THE NATIONAL WEATHER SERVICE IN HUNTSVILLE. RSB
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HUNTSVILLE AL 1235 PM CDT WED APR 11 2007 ALZ001-111800- LAUDERDALE- 1235 PM CDT WED APR 11 2007 ...SIGNIFICANT WEATHER ALERT FOR LAUDERDALE COUNTY UNTIL 100 PM CDT... AT 1232 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR IUKA IN MISSISSIPPI...MOVING EAST AT 45 MPH. DIME TO NICKEL SIZE HAIL AND WINDS UP TO 40 MPH ARE EXPECTED WITH THIS STORM. * LOCATIONS IN OR NEAR THE PATH INCLUDE... WATERLOO. THREET. REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO THE STORM TO BE STRUCK BY LIGHTNING. SEEK SAFE SHELTER IMMEDIATELY. STAY TUNED TO NOAA WEATHER RADIO...COMMERCIAL RADIO...OR YOUR LOCAL TELEVISION STATIONS FOR LATER STATEMENTS AND POSSIBLE WARNINGS CONCERNING THIS WEATHER SITUATION. KTW
SPECIAL WEATHER STATEMENT...CORRECTED NATIONAL WEATHER SERVICE HUNTSVILLE AL 1235 PM CDT WED APR 11 2007 ALZ001-111800- LAUDERDALE- 1235 PM CDT WED APR 11 2007 ...SIGNIFICANT WEATHER ALERT FOR LAUDERDALE COUNTY UNTIL 100 PM CDT... AT 1232 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR IUKA IN MISSISSIPPI...MOVING EAST AT 45 MPH. DIME SIZE HAIL AND WINDS UP TO 40 MPH ARE EXPECTED WITH THIS STORM. * LOCATIONS IN OR NEAR THE PATH INCLUDE... WATERLOO. THREET. REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO THE STORM TO BE STRUCK BY LIGHTNING. SEEK SAFE SHELTER IMMEDIATELY. STAY TUNED TO NOAA WEATHER RADIO...COMMERCIAL RADIO...OR YOUR LOCAL TELEVISION STATIONS FOR LATER STATEMENTS AND POSSIBLE WARNINGS CONCERNING THIS WEATHER SITUATION. KTW
The Columbus AFB radar (KGWX), 102 km away, was scanning. The volume nearest the first event began at 17:58 UTC.
2 thunderstorm wind. Local standard time, as filed.
A tree was blown down onto the Natchez Trace Parkway by a strong wind gust.
Thunderstorm winds produced considerable damage to a roof and work shop of a residence. A tree was also blown down onto a car causing damage to a wind shield.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Alabama in 2007Every state in 2007This day in weather historyWarnings in Alabama, April 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: 23353, 23354.