Heat index values reached 105 to 109 degrees in the following counties: Madison, Lauderdale, Colbert, Franklin, Lawrence, Limestone, Cullman and Morgan.
Every event with a place to put it; 8 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 to 109 degrees in the following counties:
Madison, Lauderdale, Colbert, Franklin, Lawrence, Limestone, Cullman and Morgan.
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 15, 2:09 PM CST, 1 hour 51 minutes earlier.
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HUNTSVILLE AL
309 PM CDT SUN AUG 15 2010
.DISCUSSION...
LATEST WATER VAPOR IMAGERY AND H5 RUC ANALYSIS INDICATE THE
TENNESSEE VALLEY IS ON THE EASTERN PERIPHERY OF THE UPPER RIDGE THAT
BLANKETS MUCH OF THE SOUTHERN TIER STATES. AS THE REMAINS OF
TROPICAL DEPRESSION FIVE SINK SOUTHWARD AND A COLD FRONT APPROACHES
FROM THE WEST...THE AREA IS ONCE AGAIN EXPERIENCING A SOUPY
AIRMASS...WITH HOT AND HUMID CONDITIONS PREVAILING. MOSTLY SUNNY
SKIES IN THE WEST HALF THIS MORNING...COMBINED WITH DEWPOINTS IN THE
UPPER 70S...ALLOWED HEAT INDEX VALUES TO TOP THE 110 DEGREE POINT
JUST AFTER NOON...AND AS SUCH...UPGRADED THE WESTERN THREE COUNTIES
TO AN EXCESSIVE HEAT WARNING.
THE FOCUS FOR THE IMMEDIATE SHORT TERM IS ON CONVECTIVE
POTENTIAL THROUGH THE EARLY EVENING AS STORMS ARE BEGINNING TO FIRE
IN A HIGH CAPE ENVIRONMENT. LATEST DAY 1 OUTLOOK FROM SPC PLACED THE
WESTERN HALF OF THE VALLEY IN A SLIGHT RISK...WITH DAMAGING WINDS
THE MAIN THREAT FROM ANY OF THE STRONGEST STORMS. A QUICK PEEK AT
THE NSSL WRF AND OUR LOCALLY RUN WRF BOTH INDICATE THAT MOST OF THE
CONVECTION WILL DISSIPATE BY MID EVENING ACROSS OUR AREA...SO HAVE
CUT THE MENTION OF THUNDER OUT OF THE FORECAST PAST 06Z...AND THE
EVENING SHIFT MAY BE ABLE TO REMOVE THE MENTION OF SHOWERS AS WELL.
OTHERWISE...EXPECT ANOTHER SOUPY NIGHT WITH LOWS IN THE MID 70S.
THE QUESTION FOR MONDAY CENTERS AROUND HOW MUCH OF THE AIRMASS
BEHIND THE ADVANCING FRONT WILL BE ABLE TO PUSH INTO THE CWFA BEFORE
STALLING AS A WEST-EAST FRONTAL BOUNDARY. ASSUMING THE FRONT /AND
THE POST-FRONTAL LOWER DEWPOINTS/ CANNOT REACH TOO FAR INTO
NORTHWEST ALABAMA TOMORROW...IT WILL BE ANOTHER WARM AND MUGGY DAY.
IN THIS SCENARIO...NORTHWEST ALABAMA WILL AGAIN REACH HEAT ADVISORY
CRITERIA IN THE AFTERNOON. HOWEVER...A SLIGHTLY STRONGER PUSH BY THE
FRONT WILL DROP DEWPOINTS ENOUGH THAT HEAT INDEX VALUES SHOULD
REMAIN JUST BELOW CRITERIA. DUE TO UNCERTAINTY REGARDING DRY AIR
INTRUSION...HAVE OPTED TO ISSUE A HEAT ADVISORY FOR OUR WESTERN FOUR
COUNTIES. CLOUD COVER IN THE EASTERN HALF OF THE CWFA SHOULD LIMIT
HEATING AND KEEP HEAT INDEX VALUES MOSTLY BELOW ADVISORY
CRITERIA...DESPITE DEWPOINTS IN THE MID 70S.
HAVE GONE A BIT OPTIMISTIC FOR MONDAY NIGHT...AND WILL FORECAST A
DRY NIGHT FOR MUCH OF NORTHWEST ALABAMA BEHIND THE FRONT. WILL ALSO
SEE SOME RELIEF IN THE STICKY OVERNIGHT LOW TEMPERATURES OF
LATE...WITH EARLY TUESDAY MORNING TEMPERATURES IN THE LOW/MID 70S.
AS TROPICAL DEPRESSION FIVE BEGINS ITS NORTHWARD PATH ALONG THE
LOWER MISSISSIPPI VALLEY ON TUESDAY...THE FRONTAL BOUNDARY WILL LIFT
NORTHWARD AS A WEAK WARM FRONT...AND THEN BECOME DIFFUSE OVER
TENNESSEE DURING THE MIDDLE OF THE WEEK. THIS REMNANT
BOUNDARY...ALONG WITH THE APPROACHING TROPICAL DEPRESSION REMNANTS
AND AN UPPER LEVEL SHORTWAVE...WILL ALL COMBINE TO BRING UNSETTLED
WEATHER TO THE VALLEY THROUGH THE WEEK AND INTO NEXT WEEKEND. THE
GOOD NEWS IS THAT THIS HAS THE POTENTIAL TO BRING MUCH NEEDED
RAINFALL TO THE VALLEY...AND WILL ALSO MEAN HIGH TEMPERATURES IN THE
LOWER 90S.
&&
.PRELIMINARY POINT TEMPS/POPS...
HUNTSVILLE 77 94 74 94 75 / 30 30 20 40 30
SHOALS 76 96 73 94 73 / 30 30 10 30 30
VINEMONT 74 94 74 92 73 / 30 40 20 40 30
FAYETTEVILLE 74 93 72 93 73 / 30 30 20 30 30
ALBERTVILLE 75 94 75 94 72 / 30 40 20 40 30
FORT PAYNE 73 93 73 93 73 / 30 40 20 40 30
&&
.HUN WATCHES/WARNINGS/ADVISORIES...
AL...HEAT ADVISORY UNTIL 8 PM CDT THIS EVENING FOR THE FOLLOWING ZONES:
CULLMAN...LIMESTONE...MADISON...MORGAN.
EXCESSIVE HEAT WARNING UNTIL 8 PM CDT THIS EVENING FOR THE
FOLLOWING ZONES: COLBERT...FRANKLIN AL...LAUDERDALE.
HEAT ADVISORY FROM 8 PM THIS EVENING TO 8 PM CDT MONDAY FOR THE
FOLLOWING ZONES: COLBERT...FRANKLIN AL...LAUDERDALE.
HEAT ADVISORY UNTIL 8 PM CDT MONDAY FOR THE FOLLOWING ZONES:
LAWRENCE.
TN...HEAT ADVISORY UNTIL 8 PM CDT THIS EVENING FOR THE FOLLOWING ZONES:
LINCOLN...MOORE.
&&HAZARDOUS WEATHER OUTLOOK...UPDATED NATIONAL WEATHER SERVICE HUNTSVILLE AL 330 PM CDT SUN AUG 15 2010 ALZ001>010-016-TNZ076-096-097-160100- LAUDERDALE-COLBERT-FRANKLIN AL-LAWRENCE-LIMESTONE-MADISON-MORGAN- MARSHALL-JACKSON-DEKALB-CULLMAN-MOORE-LINCOLN-FRANKLIN TN- 330 PM CDT SUN AUG 15 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH ALABAMA AND PORTIONS OF SOUTHERN MIDDLE TENNESSEE. .DAY ONE...THIS AFTERNOON AND TONIGHT... SCATTERED THUNDERSTORMS WILL LAST INTO THE EARLY EVENING HOURS. A FEW OF THESE STORMS WILL BE CAPABLE OF DAMAGING DOWNBURST WINDS...SUDDEN FREQUENT LIGHTNING...AND LOCALLY HEAVY RAINFALL. DANGEROUS HEAT WILL CONTINUE...ESPECIALLY ACROSS SOUTHERN MIDDLE TENNESSEE...NORTH CENTRAL AND NORTHWEST ALABAMA. HEAT INDEX VALUES OF 105 TO 115 DEGREES ARE EXPECTED IN THESE AREAS DUE TO TEMPERATURES IN THE MID TO UPPER 90S AND HIGH HUMIDITY. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY... THE HEAT WILL CONTINUE FOR ANOTHER DAY IN NORTHWEST ALABAMA...WHERE MONDAY AFTERNOON HEAT INDEX VALUES OF 105 TO 110 ARE EXPECTED. A HEAT ADVISORY IS IN EFFECT. A FRONTAL BOUNDARY WILL STALL OVER THE AREA THIS WEEK...ALLOWING FOR SCATTERED THUNDERSTORM DEVELOPMENT...ESPECIALLY DURING THE AFTERNOON AND EVENING HOURS THIS WEEK. .SPOTTER CALL TO ACTION STATEMENT... ACTIVATION OF STORM SPOTTERS AND EMERGENCY MANAGEMENT PERSONNEL IS POSSIBLE. KULA
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
135 PM CDT SUN AUG 15 2010
ALZ009-151915-
JACKSON-
135 PM CDT SUN AUG 15 2010
...SIGNIFICANT WEATHER ADVISORY FOR WESTERN JACKSON COUNTY UNTIL 215
PM CDT...
AT 130 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM NEAR ESTILLFORK...OR 18 MILES SOUTH OF
WINCHESTER...MOVING SOUTH AT 15 MPH.
WINDS UP TO 40 MPH AND FREQUENT CLOUD TO GROUND LIGHTNING ARE
EXPECTED WITH THIS STORM.
* LOCATIONS IN OR NEAR THE PATH INCLUDE...
PRINCETON.
HOLLYTREE.
SKYLINE.
LARKINSVILLE...TRENTON.
THIS THUNDERSTORM COULD PRODUCE STRONG AND GUSTY WINDS...SO STAY IN
A SAFE SHELTER IN THE AFFECTED AREAS.
&&
LAT...LON 3467 8597 3470 8629 3497 8622 3500 8615
3499 8607
TIME...MOT...LOC 1834Z 351DEG 12KT 3492 8617
KULASPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
232 PM CDT SUN AUG 15 2010
ALZ007-016-152015-
CULLMAN-MORGAN-
232 PM CDT SUN AUG 15 2010
...SIGNIFICANT WEATHER ADVISORY FOR NORTHWEST CULLMAN AND SOUTHWEST
MORGAN COUNTIES UNTIL 315 PM CDT...
AT 232 PM CDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM
NEAR DANVILLE...OR 8 MILES SOUTHWEST OF HARTSELLE...MOVING SOUTH AT
15 MPH.
WINDS UP TO 40 MPH AND FREQUENT CLOUD TO GROUND LIGHTNING ARE
EXPECTED WITH THIS STORM.
* LOCATIONS IN OR NEAR THE PATH INCLUDE...
BATTLEGROUND.
WEST POINT.
JONES CHAPEL...LOGAN.
SEEK SHELTER AND STAY AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.
&&
LAT...LON 3430 8712 3447 8710 3448 8698 3412 8686
3408 8712
TIME...MOT...LOC 1932Z 350DEG 13KT 3438 8707
KULASPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
236 PM CDT SUN AUG 15 2010
ALZ009-010-152015-
DE KALB-JACKSON-
236 PM CDT SUN AUG 15 2010
...SIGNIFICANT WEATHER ADVISORY FOR DEKALB AND JACKSON COUNTIES UNTIL
315 PM CDT...
AT 235 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM NEAR LARKINSVILLE...MOVING SOUTH AT 15
MPH.
WINDS UP TO 50 MPH AND FREQUENT CLOUD TO GROUND LIGHTNING ARE
EXPECTED WITH THIS STORM.
* LOCATIONS IN OR NEAR THE PATH INCLUDE...
SCOTTSBORO.
SECTION.
LANGSTON...FYFFE.
THE GUSTY WINDS WILL BE CAPABLE OF KNOCKING DOWN SMALL TREES...TREE
LIMBS...AND POWERLINES. SEEK SAFE SHELTER UNTIL THE STORM HAS PASSED.
&&
LAT...LON 3440 8612 3440 8613 3444 8611 3448 8607
3448 8609 3453 8609 3453 8610 3451 8612
3453 8614 3461 8614 3461 8620 3477 8621
3480 8600 3443 8588
TIME...MOT...LOC 1936Z 350DEG 13KT 3469 8608
KULASPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
407 PM CDT SUN AUG 15 2010
ALZ001-005-152145-
LAUDERDALE-LIMESTONE-
407 PM CDT SUN AUG 15 2010
...SIGNIFICANT WEATHER ADVISORY FOR LAUDERDALE AND LIMESTONE COUNTIES
UNTIL 445 PM CDT...
AT 401 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
STRONG THUNDERSTORMS ALONG A LINE....EXTENDING FROM MT ROZELL...TO
ST. JOSEPH...AND 6 MILES NORTHEAST OF THREET...MOVING SOUTHEAST AT
25 MPH.
WINDS UP TO 50 MPH...FREQUENT CLOUD TO GROUND LIGHTNING...AND HEAVY
DOWNPOURS ARE EXPECTED WITH THESE STORMS.
* LOCATIONS IN OR NEAR THE PATH INCLUDE...
LEXINGTON.
ZIP CITY...ANDERSON.
KINGTOWN...CAIRO.
CENTER STAR...KILLEN.
SEEK SHELTER AND STAY AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.
STAY TUNED TO NOAA WEATHER RADIO...COMMERCIAL RADIO...OR YOUR LOCAL
TELEVISION STATIONS FOR LATER STATEMENTS AND POSSIBLE WARNINGS
CONCERNING THIS WEATHER SITUATION.
&&
LAT...LON 3497 8710 3476 8678 3470 8679 3475 8707
3475 8719 3477 8720 3476 8730 3481 8735
3481 8737 3479 8743 3483 8751 3482 8758
3501 8787 3502 8733
TIME...MOT...LOC 2106Z 309DEG 21KT 3493 8712 3499 8743
3500 8775
RSBSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
447 PM CDT SUN AUG 15 2010
ALZ002-004-005-007-152230-
COLBERT-LAWRENCE-LIMESTONE-MORGAN-
447 PM CDT SUN AUG 15 2010
...SIGNIFICANT WEATHER ADVISORY FOR COLBERT...LAWRENCE...LIMESTONE
AND MORGAN COUNTIES UNTIL 530 PM CDT...
AT 445 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM MUSCLE SHOALS TO
RIPLEY...OR ALONG A LINE EXTENDING FROM MUSCLE SHOALS TO 8 MILES
SOUTHWEST OF ATHENS...MOVING SOUTHEAST AT 15 MPH.
WINDS UP TO 50 MPH...FREQUENT CLOUD TO GROUND LIGHTNING...AND HEAVY
DOWNPOURS ARE EXPECTED WITH THESE STORMS.
* LOCATIONS IN OR NEAR THE PATH INCLUDE...
LEIGHTON...TOWN CREEK.
WHEELER.
HILLSBORO.
TRINITY...MOORESVILLE.
CHALYBEATE SPRINGS.
SEEK SHELTER AND STAY AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.
STAY TUNED TO NOAA WEATHER RADIO...COMMERCIAL RADIO...OR YOUR LOCAL
TELEVISION STATIONS FOR LATER STATEMENTS AND POSSIBLE WARNINGS
CONCERNING THIS WEATHER SITUATION.
&&
LAT...LON 3453 8739 3476 8772 3481 8759 3479 8732
3476 8730 3475 8727 3475 8726 3478 8727
3477 8704 3458 8678 3455 8678 3455 8675
3447 8663
TIME...MOT...LOC 2146Z 312DEG 19KT 3476 8761 3472 8707
RSBThe national radar mosaic for the moment the first event began.
8 heat. Local standard time, as filed.
Peak heat index values climbed into the 105 to 109 degree range during the afternoon hours.
Peak heat index values climbed into the 105 to 109 degree range during the afternoon hours.
Peak heat index values climbed into the 105 to 109 degree range during the afternoon hours.
Peak heat index values climbed into the 105 to 109 degree range during the afternoon hours.
Peak heat index values climbed into the 105 to 109 degree range during the afternoon hours.
Peak heat index values climbed into the 105 to 109 degree range during the afternoon hours.
Peak heat index values climbed into the 105 to 109 degree range during the afternoon hours.
Peak heat index values climbed into the 105 to 109 degree range 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: 258115, 258116, 258118, 258119, 258120, 258121, 258122, 258123.