A four day stretch of extreme temperatures occurred across the region to start off the month of August. High pressure was firmly entrenched across the southeast and allowed temperatures to soar into the triple digits across much of the region.
Every event with a place to put it; 47 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 JAN wrote it up.
A four day stretch of extreme temperatures occurred across the region to start off the month of August. High pressure was firmly entrenched across the southeast and allowed temperatures to soar into the triple digits across much of the region. Across the NWS Jackson, MS forecast area, 19 record highs were set between August 1st and 4th. On August 2nd, the 2nd warmest average temperature was recorded. The low was 78 and the high 105, this resulted in an average temperature of 91.5 degrees. Additionally, relatively high humidity levels made conditions even more oppressive, with heat index readings surpassing 110 degrees in many areas. This extreme heat resulted in 3 fatalities across the forecast area.
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 Jackson, MS wrote its last area forecast discussion before the first event at Jul 31, 9:00 PM CST, 3 hours earlier.
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE JACKSON MS
1000 PM CDT SAT JUL 31 2010
...HOTTEST TEMPERATURES SO FAR THIS SUMMER EXPECTED THIS WEEKEND...
.UPDATE...ALTHOUGH NO RECORD HIGHS WERE SET TODAY...MOST SITES
TOPPED OUT IN THE UPPER 90S WITH HATTIESBURG REACHING 100. THE HEAT
HAS BEEN SLOW TO DECREASE THIS EVENING WITH MOST SITES IN THE LOWER
80S AT 10 PM. ONLY MINOR ADJUSTMENTS WERE MADE TO THE GRIDS TO
INCREASE DEW POINTS IN THE WEST AND LOWER HOURLY TEMPERATURES IN THE
CENTRAL PORTIONS. A FEW DEBRIS CLOUDS WERE NOTED DROPPING SOUTH INTO
NORTHERN MISSISSIPPI BUT SHOULD DISSIPATE AS THEY NEAR OUR NORTHERN
ZONES. THE HEAT ADVISORY REMAINS IN EFFECT THROUGH MONDAY. /22/
&&
.AVIATION...VFR CONDITIONS WERE BEING OBSERVED THIS EVENING AND WL
CONTINUE THROUGH SUNDAY. OTHERWISE...HOT TEMPERATURES ARE XPCTD OVR
THE NEXT FEW DAYS AS STRONG HIGH PRES BUILDS IN FROM THE W. SFC
WINDS WL REMAIN LGT THRU THE PERIOD...ACCOMPANIED BY MOSTLY CLR
SKIES EXCEPT FOR SOME AFTN CU FL050-070. SIGNIFICANT MORNING FG/BR
FORMATION IS NOT XPCTD. /22/
&&
.PREV DISCUSSION... /ISSUED 306 PM CDT SAT JUL 31 2010/
SHORT TERM...AFTERNOON TEMPERATURES HAVE CLIMBED INTO THE UPPER 90S
AT MOST LOCATIONS WITH ONE OR TWO SITES AT 100 DEGREES. SHOULD SEE A
FEW MORE SITES REACH THE TRIPLE DIGITS BEFORE THE AFTERNOON IS OVER.
EARLY AFTERNOON TEMPS WERE RUNNING 1-3 DEGREES COOLER THAN INDICATED
BY 30/12Z MOS NUMBERS WITH NO STATION QUITE AS WARM AS EARLIER
INDICATED BY MOS. HEZ WAS RUNNING ABOUT 5 DEGS COOLER THAN MOS
SHOWED YESTERDAY. ALTHOUGH EXPECT TRIPLE DIGIT HIGHS AT MANY
LOCATIONS IN THE SHORT TERM...ESPECIALLY SUNDAY...WILL FOLLOW TREND
OF CUTTING MAV MOS A DEGREE OR TWO.
A BOUNDARY WILL DROP SLOWLY SWD TOWARD THE FORECAST AREA TONIGHT...
MOVING INTO NRN MS/SRN AR BY SUNRISE SUNDAY. THE ASSOCIATED 850 MB
TROUGH WASHES OUT WHILE 850 MB RIDGING AMPLIFIES AND 925/850 MB
TEMPS WARM OVERNIGHT. MAV NUMBERS LOOK TOO COOL FOR LOWS TONIGHT SO
WILL GENERALLY FOLLOW HIGHER READINGS FROM CURRENT FORECAST. MOS
MINS FOR SUNDAY NIGHT HAVE COME IN WARMER AND WERE MORE CLOSELY
FOLLOWED.
LOW LEVELS CONTINUE TO WARM SUNDAY AS LOW LEVEL RIDGING AMPLIFIES.
925 MB TEMPS ARE FORECAST TO REACH 32 DEGS AT SOME LOCATIONS ALONG
AND WEST OF THE MS RIVER. MID LEVEL MOISTURE INCREASES BUT DEW POINT
DEPRESSIONS REMAIN VERY DRY BELOW AND CONVECTION LOOKS UNLIKELY. THE
VERY HOT PATTERN CONTINUES...THE MAIN QUESTION BEING HOW HOT WILL
TEMPERATURES GET. BOTH THE GFS AND NAM ARE FORECASTING TRIPLE DIGIT
HIGHS FOR THE GENERAL AREA SUNDAY INCLUDING BOTH SHOWING 104 DEGREE
HIGHS AT GLH SUNDAY AFTERNOON. THINK THAT TRIPLE DIGIT HIGHS ARE
LIKELY BUT HAVE SHAVED MOS NUMBERS SLIGHTLY. THIS WILL STILL
MAINTAIN HEAT INDEX VALUES WELL ABOVE 105 DEGREES AND THE HEAT
ADVISORY WILL CONTINUE. EXPECT DEWPOINTS TO MIX OUT A BIT TOMORROW
AS THEY HAVE THIS AFTERNOON SO HAVE ELECTED TO NOT ISSUE AN
EXCESSIVE HEAT WARNING AT THIS TIME.
UPPER LEVEL RIDGING CONTINUES THROUGH MONDAY...BECOMING CENTERED
OVER THE REGION MONDAY AFTERNOON. LOWER LEVEL RIDGING BEGINS TO
SHIFT EWD BUT 925/850 TEMPS REMAIN HOT. MAINTAINED HIGH HEAT INDEX
VALUES THROUGH MONDAY DUE TO CONTINUED WARM TEMPS AND SLOWLY
INCREASING LOW LEVEL DEWPOINTS AS LOW MOISTURE FLOW VEERS TO A MORE
SLY DIRECTION. /03/
LONG TERM...I CAN SUM UP THE LONG TERM IN TWO WORDS...CONTINUED
HOT. ALL MODELS KEEP THE STOUT SUBTROPICAL RIDGE IN CONTROL OVER OUR
AREA WITH ITS CENTER JUST TO OUR NW THROUGH THE NEXT 7 DAYS. IN THE
LOWER LEVELS...THE RIDGE CENTER IS ALMOST OVERHEAD THROUGH MID WEEK
AND THIS WILL KEEP THE LOW LEVEL THERMAL TROUGH AXIS OVER THE CWA OR
VERY CLOSE. THE 850MB TEMP LOOKS TO REMAIN IN RARE TERRITORY DURING
THIS TIME WITH VALUES OF 22-24C LINGERING INTO NEXT WEEKEND. THIS
WILL SPELL MORE VERY HOT DAYS FOR TUE-THU WITH MAX TEMPS PEAKING IN
THE 97-102 RANGE. SOME LOCATIONS COULD SEE TEMPS EXCEED 102
DEGREES...BUT THOSE VALUES LOOK TO BE MORE RARE AND WOULD LIKELY BE
TOUCHED MON OR TUE. MID WEEK INTO LATE WEEK...THE TREND IS FOR MAX
TEMPS TO FALL BACK TOWARD THE MID/UPPER 90S...BUT THIS IS MAINLY DUE
TO UNCERTAINTY AND THE LEAN BACK CLOSER TO CLIMO VALUES FOR THE
LATTER PORTION OF THE EXTENDED. GUID SEEMS TO HAVE A GOOD HANDLE ON
TEMPS AND I STAYED WITH OR TWEAKED UPWARD A TAD. HI'S WILL BE 105 TO
110 TUE AND THE CURRENT HEAT ADV MAY BE EXTENDED.
AS FOR POPS/WX...THINGS LOOK TO REMAIN QUIET WITH ONLY SOME SLIGHT
CHANCE POPS ENTERING THE MIX BY TUE/WED AND LINGERING THROUGH THE
WEEK. IF ANYTHING DEVELOPS DURING THAT TIME FRAME...ISO TYPE
ACTIVITY IS WHAT WOULD BE EXPECTED. I WOULD NOT BE SURPRISED TO SEE
THINGS STAY SUPPRESSED AS THE RIDGE KEEPS DECENT SUBSIDENCE AROUND.
/CME/
CLIMATE...HOT CONDITIONS ARE EXPECTED ACROSS THE REGION FOR THE
NEXT 3 TO 4 DAYS. DURING THIS TIME...SOME RECORD HIGHS MAY FALL.
BELOW IS A TABLE THAT LISTS RECORDS HIGHS AND FORECAST VALUES
THROUGH TUESDAY...AUG 3RD.
DATE: 8/1 SUNDAY
SITE RECORD FORECAST
GLH 103 (1980) 102
GWO 99 (1986) 101
HBG 101 (1986) 102
JAN 104 (1896) 102
MEI 102 (1999) 102
TVR 102 (1986) 103
DATE: 8/2 MONDAY
SITE RECORD FORECAST
GLH 103 (2008) 102
GWO 98 (2008) 102
HBG 98 (1998) 101
JAN 102 (1947) 101
MEI 102 (1999) 102
TVR 100 (1952) 100
DATE: 8/3 TUESDAY
SITE RECORD FORECAST
GLH 103 (1930) 101
GWO 100 (1987) 100
HBG 99 (1999) 99
JAN 103 (1952) 100
MEI 100 (1954) 99
TVR 99 (1954) 100
&&
.PRELIMINARY POINT TEMPS/POPS...
JACKSON 76 102 77 101 / 2 5 5 8
MERIDIAN 75 102 75 102 / 4 9 7 10
VICKSBURG 75 103 75 100 / 1 3 3 8
HATTIESBURG 76 102 77 101 / 3 7 7 12
NATCHEZ 75 102 75 99 / 0 3 3 11
GREENVILLE 76 102 78 102 / 1 6 4 4
GREENWOOD 75 101 77 102 / 4 8 5 4
&&
.JAN WATCHES/WARNINGS/ADVISORIES...
MS...HEAT ADVISORY UNTIL 7 PM CDT MONDAY FOR MSZ018-019-025>066-
072>074.
LA...HEAT ADVISORY UNTIL 7 PM CDT MONDAY FOR LAZ007>009-015-016-
023>026.
AR...HEAT ADVISORY UNTIL 7 PM CDT MONDAY FOR ARZ074-075.
&&
22/03/CMEHAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE JACKSON MS 240 PM CDT SAT JUL 31 2010 ARZ074-075-LAZ007>009-015-016-023>026-MSZ018-019-025>066-072>074- 011945- ASHLEY-CHICOT-MOREHOUSE-WEST CARROLL-EAST CARROLL-RICHLAND- MADISON LA-FRANKLIN LA-CATAHOULA-TENSAS-CONCORDIA-BOLIVAR- SUNFLOWER-LEFLORE-GRENADA-CARROLL-MONTGOMERY-WEBSTER-CLAY-LOWNDES- CHOCTAW-OKTIBBEHA-WASHINGTON-HUMPHREYS-HOLMES-ATTALA-WINSTON- NOXUBEE-ISSAQUENA-SHARKEY-YAZOO-MADISON MS-LEAKE-NESHOBA-KEMPER- WARREN-HINDS-RANKIN-SCOTT-NEWTON-LAUDERDALE-CLAIBORNE-COPIAH- SIMPSON-SMITH-JASPER-CLARKE-JEFFERSON-ADAMS-FRANKLIN MS-LINCOLN- LAWRENCE-JEFFERSON DAVIS-COVINGTON-JONES-MARION-LAMAR-FORREST- 240 PM CDT SAT JUL 31 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL MISSISSIPPI... NORTHEAST LOUISIANA...AND EXTREME SOUTHEAST ARKANSAS. .DAY ONE...TONIGHT AND SUNDAY HOT TEMPERATURES AND HIGH HUMIDITY WILL PRODUCE DANGEROUS HEAT STRESS LEVELS THIS AFTERNOON...AS WELL AS ON SUNDAY...WITH HEAT INDEX VALUES CLIMBING ABOVE 105 DEGREES. A HEAT ADVISORY REMAINS IN EFFECT FOR THE ENTIRE OUTLOOK AREA. .DAYS TWO THROUGH SEVEN...SUNDAY NIGHT THROUGH FRIDAY VERY HOT WEATHER WILL CONTINUE MONDAY INTO THE MIDDLE OF NEXT WEEK WITH MIDDAY AND AFTERNOON HEAT INDEX VALUES CLIMBING TO THE 108 TO 112 DEGREE RANGE AT MANY LOCATIONS. AFTERNOON HEAT INDEX VALUES MAY CLIMB ABOVE 105 DEGREES AT MANY AREAS THROUGH AT LEAST THURSDAY. A HEAT ADVISORY REMAINS IN EFFECT FOR THE ENTIRE OUTLOOK AREA THROUGH MONDAY...AND WILL LIKELY BE EXTENDED INTO AT LEAST WEDNESDAY. .SPOTTER CALL TO ACTION STATEMENT... THE ACTIVATION OF STORM SPOTTERS...HAM RADIO OPERATORS...AND EMERGENCY MANAGEMENT PERSONNEL IN SUPPORT OF SEVERE WEATHER OPERATIONS IS NOT EXPECTED THROUGH NEXT FRIDAY. FOR MORE INFORMATION PLEASE VISIT OUR WEBSITE AT WWW.SRH.NOAA.GOV/JAN. THIS INCLUDES THE GRAPHICAL HAZARDOUS WEATHER OUTLOOK. BK
The national radar mosaic for the moment the first event began.
47 excessive heat. Local standard time, as filed.
A 48 year old man died while mowing his lawn. The coroner ruled that he died of a heart attack brought on by the excessive heat.
A lady was found dead in her home on the morning of August 5th. The Washington County Coroner's office said the temperature in her home was 100 degrees.
A man was found lying near a tree in his yard in Cleveland. Bolivar County officials said the man lived alone and had been dead at least a day. A jug of water was found near his body.
As the offices recorded each death: direct deaths were caused by the weather itself, indirect ones by something it set in motion.
| Event | Date | Age | Sex | Where | Kind |
|---|---|---|---|---|---|
| Excessive Heat, Jefferson | 2010-08-02 | 48 | Male | Outside/Open Areas | Direct |
| Excessive Heat, Washington | 2010-08-04 | 86 | Female | Permanent Home | Direct |
| Excessive Heat, Bolivar | 2010-08-05 | 84 | Male | Outside/Open Areas | Direct |
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Mississippi in 2010Every state in 2010This day in weather historyWarnings in Mississippi, 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 2026-09-30. Each event’s entry at NCEI: 249043, 254718, 254719, 256008, 256009, 256011, 256012, 256013, 256014, 256015, 256016, 256017, 256018, 256019, 256020, 256021, 256022, 256023, 256024, 256025, 256027, 256028, 256029, 256030, 256031, 256032, 256033, 256034, 256035, 256036, 256037, 256038, 256039, 256040, 256041, 256042, 256043, 256044, 256045, 256046, and more.