Heat index values reached 105 degrees in the following counties:|Lauderdale, Colbert, Franklin and Lawrence.
Every event with a place to put it; 4 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 episode as NWS HUN wrote it up.
Heat index values reached 105 degrees in the following counties:|Lauderdale, Colbert, Franklin and Lawrence.
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 Aug 19, 9:26 AM CST, 34 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE HUNTSVILLE AL 1026 AM CDT THU AUG 19 2010 .UPDATE...NO MAJOR CHANGES TO GRIDS/ZONES ATTM. && .DISCUSSION...RUC80 SHOWS 5H WEAK TROF ACROSS NW AL WHILE SFC CDFNT LOOKS TO BE ALONG THE TN/KY BORDER. NOT REALLY PLANNING ANY MAJOR CHANGES TO CURRENT FCST...HOWEVER DID INCLUDE A 20 POP ACROSS ALL OF NW AL IN GRIDS. 50 POPS IN OUR ERN ZONES MAY BE A LITTLE HIGH...BUT WITH THE LOCATION THE WEAK 5H TROF AND DAYTIME HEATING...THIS REGION WILL STILL HAVE THE BEST CHC OF SHRA/TSRA. && .PREV DISCUSSION... /ISSUED 631 AM CDT THU AUG 19 2010/ UPDATE...FOR 12Z AVIATION. AVIATION...MVFR CIGS SHOULD PREVAIL THROUGH 15-16Z DUE TO A LOW CLOUD DECK SPREADING OVER MUCH OF AL/CENTRAL TN/N MS. VFR CONDITIONS ARE THEN LIKELY THROUGH 09Z WITH FOG FORMATION LIKELY AT BOTH AIRPORTS DUE TO SFC MOISTURE FROM RECENT RAINFALL AND LIGHT WINDS. SOME SCATTERED SHOWERS AND THUNDERSTORMS ARE POSSIBLE MAINLY ACROSS NE AL UNTIL 06Z...BUT HAVE NOT INCLUDED IN TAFS AT THIS TIME. DISCUSSION.../ISSUED AT 415 AM CDT THU AUG 19 2010/ WELL THE COMPLEXITY OF THIS FORECAST PACKAGE CONTINUES AS MODEL DISCREPANCIES AND A GENERAL MESSY WEATHER PATTERN WILL BE THE MAIN STORY OVER THE NEXT SEVEN DAYS. CONFIDENCE IS FAIRLY LOW ESPECIALLY IN THE EXTENDED WHERE THE GFS AND EURO HAVE PRACTICALLY FLIP FLOPPED THE ONCE POTENTIALLY RAIN FREE WORK WEEK TO A MUCH WETTER SOLUTION FOR AT LEAST THE FIRST HALF OF THE WEEK. A LOW STRATUS DECK CONTINUES TO PLAGUE THE TENNESSEE VALLEY THIS MORNING AS A FEW SHOWERS MOVE ACROSS THE AREA. TAKING A LOOK AT WATER VAPOR IMAGERY...A SIGNIFICANT AREA OF DRY AIR CONTINUES TO PUNCH TOWARDS THE AREA THIS MORNING. WITH THE BEST MOISTURE AND LIFT REMAINING MOSTLY SOUTH AND EAST OF THE TENNESSEE VALLEY TODAY...THINK THE BEST CHANCE FOR SHOWERS AND THUNDERSTORMS FOR THE AREA WILL LOGICALLY BE ACROSS NORTHEAST ALABAMA. IN FACT...PORTIONS OF NORTHWEST ALABAMA WILL LIKELY REMAIN DRY ONCE THESE EARLY MORNING SHOWERS MOVE EAST. THE STALLED SURFACE BOUNDARY WILL STILL BE AROUND...SO CHOSE NOT TO REMOVE POPS ENTIRELY BUT DO THINK THERE WILL BE A GENERALLY DECLINE IN CONVECTION DURING THE AFTERNOON HOURS AS PW/S FALL AND THE BOUNDARY SINKS SOUTH. HIGH TEMPERATURES WILL BE VERY TRICKY AND THINK THE WARMEST LOCATIONS WILL BE ACROSS NORTHWEST ALABAMA. SIDED MORE WITH MAV GUIDANCE FOR HIGHS AS UPPER 80S TO LOWER 90S SEEM REASONABLE. SHORT RANGE MODELS ARE ACTUALLY IN FAIR AGREEMENT IN KEEPING THE AREA RAIN FREE TONIGHT AS THE BOUNDARY REMAINS SOUTH OF THE AREA. UNFORTUNATELY...DO NOT THINK THE 70S DEWPOINTS WILL DISAPPEAR ANYTIME SOON AND AS A RESULT LOWS WILL STAY IN THE LOWER 70S TONIGHT. THE BOUNDARY WILL BEGIN TO DRIFT BACK NORTH ON FRIDAY INCREASING THE CHANCES FOR CONVECTION MAINLY ACROSS NORTHEAST ALABAMA. ONCE AGAIN...LOCATIONS WEST OF INTERSTATE 65 MAY STAY COMPLETELY DRY SO HAVE TAILORED POPS FROM WEST TO EAST. HIGH TEMPERATURES FOR FRIDAY ARE QUITE CHALLENGING AS MUCH IS DEPENDENT ON THE PLACEMENT OF THE BOUNDARY. AT THIS POINT...SIDED WITH THE HIGHER MAV GUIDANCE NUMBERS ALTHOUGH DO THINK THEY MAY BE ONE TO TWO DEGREES TOO WARM. REGARDLESS...HOT AND HUMID CONDITIONS CAN BE EXPECTED WITH HEAT INDEX READINGS ONCE AGAIN APPROACHING 105 DEGREES. FOR THE WEEKEND...MODELS CONTINUE TO HINT AT AN UPPER LEVEL DISTURBANCE MOVING ACROSS THE REGION. THIS DISTURBANCE COMBINING WITH AMPLE TROPICAL MOISTURE AND THE SAME OLD SURFACE BOUNDARY WILL CREATE A BETTER CHANCE FOR SHOWERS AND THUNDERSTORMS DURING THIS TIME FRAME. HIGH TEMPERATURES WILL BE IN THE LOW TO MID 90S WITH HIGH HUMIDITY VALUES CONTINUING. QUITE A BIT OF UNCERTAINTY HAS BEEN INTRODUCED FOR MONDAY AND TUESDAY AS THE BOUNDARY NEVER GETS MUCH OF A PUSH SOUTH. AS A RESULT...HAVE ADDED POPS FOR MONDAY AND TUESDAY AS BOTH THE GFS AND EURO KEEP THE BOUNDARY AND UPPER LEVEL FEATURES CLOSE TO THE AREA. BY MID WEEK...THE GFS AND EURO ARE NO WHERE CLOSE TO BEING IN AGREEMENT WITH THE GFS BRINGING A TROUGH JUST NORTH OF THE AREA WHILE THE EURO KEEPS THE AREA DRY AND DEVELOPS A TROPICAL LOW IN THE NORTHERN GULF. WITH THAT SAID...CONFIDENCE IS QUITE LOW DURING THIS TIME FRAME SO HAVE KEPT THINGS DRY AND TEMPERATURES ABOVE SEASONAL VALUES. && .HUN WATCHES/WARNINGS/ADVISORIES... AL...NONE. TN...NONE. && SS
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE HUNTSVILLE AL 432 AM CDT THU AUG 19 2010 ALZ001>010-016-TNZ076-096-097-191830- LAUDERDALE-COLBERT-FRANKLIN AL-LAWRENCE-LIMESTONE-MADISON-MORGAN- MARSHALL-JACKSON-DEKALB-CULLMAN-MOORE-LINCOLN-FRANKLIN TN- 432 AM CDT THU AUG 19 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH ALABAMA AND PORTIONS OF SOUTHERN MIDDLE TENNESSEE. .DAY ONE...TODAY AND TONIGHT... SCATTERED SHOWERS AND THUNDERSTORMS WILL BE POSSIBLE ESPECIALLY OVER NORTHEAST ALABAMA. WHILE LOCALIZED HEAVY RAINS REMAIN A POSSIBILITY...THE PRIMARY THREATS BY THE STRONGER STORMS WILL BE FREQUENT LIGHTNING AND GUSTY WINDS. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY... DANGEROUS HEAT WILL BE POSSIBLE ON FRIDAY AND SATURDAY. HEAT INDEX VALUES BETWEEN 100 AND 105 DEGREES ARE EXPECTED DUE TO TEMPERATURES IN THE MID 90S AND HIGH HUMIDITY. SHOWERS AND THUNDERSTORMS CAN BE EXPECTED BEGINNING ON SATURDAY AND CONTINUING THROUGH TUESDAY. THE STRONGER STORMS WILL BE CAPABLE OF PRODUCING LOCALLY HEAVY RAINFALL...FREQUENT LIGHTNING...AND GUSTY WINDS. .SPOTTER CALL TO ACTION STATEMENT... ACTIVATION OF STORM SPOTTERS AND EMERGENCY MANAGEMENT PERSONNEL IS NOT ANTICIPATED AT THIS TIME. SL
The national radar mosaic for the moment the first event began.
4 heat. Local standard time, as filed.
Heat index values reached at least 105 degrees during the afternoon hours.
Heat index values reached at least 105 degrees during the afternoon hours.
Heat index values reached at least 105 degrees during the afternoon hours.
Heat index values reached at least 105 degrees during the afternoon hours.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Alabama in 2010Every state in 2010This day in weather historyWarnings in Alabama, August 2010
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: 243084, 243087, 243088, 243090.