A heat wave that began in July continued into early August. Heat index values climbed to 110 degrees or higher at Huntsville, Muscle Shoals and nearby communities on the 1st.
Every event with a place to put it; 11 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.
A heat wave that began in July continued into early August. Heat index values climbed to 110 degrees or higher at Huntsville, Muscle Shoals and nearby communities on the 1st. Other areas reached at least 105 degrees. Temperatures reached or exceeded 100 degrees in some areas on the 3rd and 4th, and again from the 10th through 13th. Most areas reached or exceeded 95 degrees. Low temperatures only dipped into the upper 70s on most mornings during this period.
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 Jul 31, 11:15 PM CST, 45 minutes earlier.
AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE HUNTSVILLE AL
1215 AM CDT SUN AUG 1 2010
.UPDATE...FOR 06Z TAFS.
&&
.AVIATION...
PATCHY MVFR VSBYS DUE TO BR WL DVLP AT KMSL...AND PSBLY AT KHSV BY
10Z. OTRW...PATCHES OF MID AND HIGH CLOUDS FROM EARLIER TS CAN BE
XPCTD. ISOLD TS CANNOT BE RULED OUT OVERNIGHT...BUT PROB IS TOO LOW
TO INCLUDE ATTM. SCT CU WL DVLP ON SUNDAY...WITH ISOLD TS PSBL DURG
THE AFTN HRS. AGN...THE PROB IS TOO LOW TO INCLUDE IN TAF ATTM.
&&
.MESOSCALE UPDATE.../ISSUED AT 1002 PM CDT SAT JUL 31 2010/
00Z UA SHOW 8H TROF AXIS WAS NEAR THE OH RIVER INTO NRN AR...WITH A
WEAK 5H SHORTWAVE FROM LAKE ERIE TO NEAR PADUCAH. ONE ISOLD TS CELL
WSW OF NASHVILLE AHEAD OF THIS TROF AXIS IS ALL THAT IS LEFT AS
THE EARLIER CELL SW OF KBNA HAS DIED. ADDITIONAL RAIN CHC CONTINUE
TO DECLINE WITH LOSS OF HEATING...SO HAVE LOWERED TO ISOLD TSRA
BEFORE 06Z...AND REMOVED SHRA AFT 06Z. OTRW...HAVE TWEAKED TEMPS/DEW
POINTS UPWARD BASED ON CURRENT TRENDS.
&&
.PREV DISCUSSION.../ISSUED AT 748 PM CDT SAT JUL 31 2010/
CONVECTIVE CELLS HAVE DIMINISHED IN INTENSITY...BUT CONTINUE TO
REDEVELOP ALONG A BOUNDARY COLLISION FROM WRN MADISON COUNTY INTO
THE NERN CORNER OF CULLMAN COUNTY WHERE SOME LOCAL BACK-BUILDING WAS
PRODUCING HEAVY RAINFALL. THE COMBO OF CAPE/DEEP SHEAR WAS A BIT
BETTER OVER TN/KY ALONG THE 8H TROF AXIS. THESE STORMS ON THEIR
CURRENT PACE COULD ENTER OUR FCST AREA BEFORE 05Z...BUT LIKELY AFTER
02Z WHEN THE SVR WATCH #553 WAS IN EFFECT. AFT COORD WITH
SPC...HAVE CANCELLED THE WATCH...BUT WL MONITOR CONVECTIVE TRENDS IN
TN. SR-INFLOW MAY AID THESE STORMS A FEW MORE HRS...SPCLLY AFTER
INTERACTING WITH THE VARIOUS OUTFLOW BOUNDARIES IN THE AREA.
&&
.HUN WATCHES/WARNINGS/ADVISORIES...
AL...HEAT ADVISORY UNTIL 8 PM CDT MONDAY FOR THE FOLLOWING ZONES:
COLBERT...CULLMAN...FRANKLIN AL...LAUDERDALE...LAWRENCE...
LIMESTONE...MADISON...MARSHALL...MORGAN.
TN...NONE.
&&
KULAHAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE HUNTSVILLE AL 759 PM CDT SAT JUL 31 2010 ALZ001>010-016-TNZ076-096-097-011000- LAUDERDALE-COLBERT-FRANKLIN AL-LAWRENCE-LIMESTONE-MADISON-MORGAN-MARSHALL-JACKSON-DEKALB-CULLMAN- MOORE-LINCOLN-FRANKLIN TN 759 PM CDT SAT JUL 31 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH ALABAMA AND PORTIONS OF SOUTHERN MIDDLE TENNESSEE. .DAY ONE...THIS AFTERNOON AND TONIGHT... ISOLATED TO SCATTERED THUNDERSTORMS REMAIN POSSIBLE...MAINLY THIS EVENING...AS MORE THUNDERSTORMS IN TENNESSEE DROP SOUTHEAST INTO THE AREA. LOCALLY HEAVY RAINFALL...FREQUENT LIGHTNING AND GUSTY WINDS ARE POSSIBLE WITH STRONGER STORMS. HEAT STRESS LEVELS WILL REMAIN HIGH THROUGH TONIGHT WITH HEAT INDEX VALUES DROPPING SLOWLY THROUGH THE 90S INTO THE 80S OVERNIGHT. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY... A HEAT WAVE IS EXPECTED THIS WEEK WITH HEAT STRESS LEVELS REMAINING HIGH. HEAT INDEX VALUES WILL RANGE FROM 105 TO AS HIGH AS 112 DEGREES IN SOME LOCATIONS EACH AFTERNOON THROUGH WEDNESDAY...FOLLOWED BY VERY WARM EVENINGS AND OVERNIGHTS. ISOLATED TO SCATTERED THUNDERSTORMS ARE ALSO EXPECTED TO RETURN TO THE TENNESSEE VALLEY BY THURSDAY...AS WEAK UPPER DISTURBANCES BEGIN TO MOVE ACROSS THE REGION. GUSTY WINDS...FREQUENT LIGHTNING...AND LOCALLY HEAVY RAINFALL ARE POSSIBLE FROM THE STRONGER STORMS. .SPOTTER CALL TO ACTION STATEMENT... ACTIVATION OF STORM SPOTTERS AND EMERGENCY MANAGEMENT PERSONNEL IS NOT ANTICIPATED AT THIS TIME. KULA
The national radar mosaic for the moment the first event began.
11 heat. Local standard time, as filed.
A persistent heat wave resulted in high temperatures in the upper 90s to lower 100s and heat index values of 105 to 109 degrees. Morning low temperatures only dipped into the mid to upper 70s on most days.
A persistent heat wave resulted in high temperatures in the upper 90s to lower 100s and heat index values of 105 to 109 degrees. Morning low temperatures only dipped into the mid to upper 70s on most days.
A persistent heat wave resulted in high temperatures in the upper 90s to lower 100s and heat index values of 105 to 109 degrees. Morning low temperatures only dipped into the mid to upper 70s on most days.
A persistent heat wave resulted in high temperatures in the upper 90s to lower 100s and heat index values of 105 to 109 degrees. Morning low temperatures only dipped into the mid to upper 70s on most days.
A persistent heat wave resulted in high temperatures in the upper 90s to lower 100s and heat index values of 105 to 109 degrees. Morning low temperatures only dipped into the mid to upper 70s on most days. Four women suffered heat related illnesses at the J. Gilmer Blackburn Aquatic Center.
A persistent heat wave resulted in high temperatures in the upper 90s to lower 100s and heat index values of 105 to 109 degrees. Morning low temperatures only dipped into the mid to upper 70s on most days. Huntsville hospital's emergency room treated at least 19 heat related illnesses during this period.
A persistent heat wave resulted in high temperatures in the upper 90s to lower 100s and heat index values of 105 to 109 degrees. Morning low temperatures only dipped into the mid to upper 70s on most days.
A persistent heat wave resulted in high temperatures in the upper 90s to lower 100s and heat index values of 105 to 109 degrees. Morning low temperatures only dipped into the mid to upper 70s on some days. The higher elevations experienced temperatures that were a few degrees lower.
A persistent heat wave resulted in high temperatures in the upper 90s to lower 100s and heat index values of 105 to 109 degrees. Morning low temperatures only dipped into the mid to upper 70s on some days. The higher elevations experienced temperatures that were a few degrees lower.
A persistent heat wave resulted in high temperatures in the upper 90s to lower 100s and heat index values of 105 to 109 degrees. Morning low temperatures only dipped into the mid to upper 70s on most days.
A persistent heat wave resulted in high temperatures in the upper 90s to lower 100s and heat index values of 105 to 109 degrees. Morning low temperatures only dipped into the mid to upper 70s on some days. The higher elevations experienced temperatures that were a few degrees lower.
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: 243101, 243102, 243103, 243104, 243105, 243106, 243107, 243109, 243111, 243112, 258114.