Daytime heating and a humid air mass combined to produce some flash flooding in Jones and Lauderdale Counties on the 20th and 21st.
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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.
Daytime heating and a humid air mass combined to produce some flash flooding in Jones and Lauderdale Counties on the 20th and 21st.
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 Aug 20, 1:04 PM CST, 5 hours 1 minute earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE JACKSON MS 204 PM CDT TUE AUG 20 2013 .SHORT TERM...MODELS IN GENERAL AGREEMENT THROUGH THURSDAY AS THEY BRIEFLY ALLOW DEEP TROPICAL MOISTURE TO SURGE NORTHWEST THROUGH WEDNESDAY NIGHT...THEN A SLOW MID/UPPER LEVEL WARMING/DRYING PERIOD TO GET UNDERWAY THEREAFTER. AT PRESENT...DEEP TROPICAL MOISTURE (PW/S AROUND 2 INCHES) REMAINS ENTRENCHED GENERALLY SOUTH OF A KHEZ-KNMM LINE...WITH MID LEVEL COLD CORES TO THE NORTH (OVER IL) AND TO THE SOUTH (EXTREME NE MEXICO). AS NORTHERN LOW SHIFT EAST AND SOUTHERN LOW SHIFTS WEST...FLOW AROUND SUBTROPICAL RIDGE OFF THE FL COAST WILL ALLOW THE PERSISTENT LAYER OF DEEP TROPICAL MOSTURE TO SPREAD TO THE NORTHWEST ACROSS THE CWA. ABSENCE OF ANY LOW LEVEL FOCUS MEANS THAT CONVECTION WILL BE SCATTERED AND DIURNALLY DRIVEN WEDNESDAY AND THURSDAY. CONVECTION MAY BE A LITTLE LESS NUMEROUS ON THURSDAY AS RIDGING OVER THE CENTER OF THE COUNTRY FINALLY STARTS REGAINING CONTROL OF THE PATTERN. MOS HAS CONTINUED TO HAVE A PROBLEM WITH AFTERNOON MAXES BEING TOO HIGH AND CONTINUES TO DO SO THROUGH THURSDAY AS EXPECTED CLOUD COVER AND CONVECTION WILL PREVENT HEATING INTO THE MID 90S./26/ .LONG TERM...FRIDAY INTO EARLY NEXT WEEK...LATEST AVAILABLE MODELS COVERING THE LONG RANGE PERIOD SHOW DECENT AGREEMENT ON A SUBTROPICAL UPPER LEVEL RIDGE SETTING UP SHOP IN THE TERRITORY OVER THE MID MS VALLEY. THE SOUTHERN PERIPHERY WILL COVER THE LOWER MS VALLEY THROUGH MOST OF THE PERIOD ALTHOUGH ASSOCIATED SUBSIDENCE WILL DEFINITELY BE MORE OF A FACTOR NORTH OF I-20 (WHERE RAIN CHANCES WILL BE AT LEAST A LITTLE BELOW AVERAGE). FURTHER SOUTH OP GFS SUGGESTS PW VALUES NEAR 2 INCHES...LIMITED THERMAL CAPPING...AND LOW LEVEL FLOW PARAMETERS GENERALLY AIDING CONVECTION DEVELOPMENT. THUS IN THESE AREAS RAIN CHANCES WILL LIKELY BE NEAR OR SLIGHTLY ABOVE NORMAL BY LATE AUGUST STANDARDS. LESSER RAIN CHANCES...PATCHY LOW SOIL MOISTURE...AND PROXIMITY TO LOW LEVEL THERMAL RIDGE SHOULD GIVE ARKLAMISS DELTA ZONES POTENTIAL FOR MOST HEAT THROUGH THE LONG RANGE. BUT EVEN HERE DEWPOINTS IN THE AFTERNOON WILL PROBABLY NOT BE HIGH ENOUGH TO RESULT IN OVERLY HIGH HEAT INDEX VALUES. HIGHS IN THE THIS REGION SHOULD RANGE FROM THE MID TO UPPER 90S MOST OF THE PERIOD ALTHOUGH AT THIS POINT THE CENTURY MARK DOES NOT LOOK TO BE IN REACH. FURTHER SOUTHEAST GREATER AMOUNTS OF CLOUDS...AFTERNOON SHOWER AND STORM ACTIVITY...AND WETTER GROUND SHOULD LIMIT HIGHS TO MID 90S AT THE HOTTEST. AS FOR SPECIFICS...MEXMOS POPS NOT LOOKING TOO BAD WITH ONLY MINOR TWEAKS TOWARD ENSEMBLE MOS NUMBERS. OTHERWISE MEXMOS TEMPS LOOK TOO WARM IN MANY AREAS FRIDAY AND SATURDAY...ESPECIALLY SOUTHEAST OF THE NATCHEZ TRACE CORRIDOR. THEN THOSE SAME TEMPS SEEM PERHAPS TOO COOL IN THE LATTER HALF OF THE LONG RANGE...ESPECIALLY IN THE ARKLAMISS DELTA...SINCE OP GFS ENHANCED EASTERLY AND COOL LOW LEVEL FLOW REGIME PROBABLY NOT LIKELY. TRENDING TOWARD ENSEMBLE MOS NUMBERS FOR TEMPS THROUGH THE PERIOD MAINLY TEMPERED THESE PERCEIVED MEXMOS BIASES. NO WIDESPREAD HAZARDOUS WEATHER ANTICIPATED THROUGH THE LONG TERM. /BB/ && .AVIATION... MOST SITES ARE VFR THIS MORNING WITH THE EXCEPTION OF GTR WHERE STRATUS HAS PERSISTED KEEPING THINGS IFR. EXPECT ALL SITES TO BECOME VFR BY 16-17Z...BUT THERE WILL BE A MIX OF VFR/MVFR CONDITIONS THIS AFTERNOON WITH CEILINGS RANGING FROM 3-4KFT. SCATTERED THUNDERSTORMS ARE POSSIBLE THIS AFTERNOON MAINLY FOR MEI AND HBG. FOG/STRATUS WILL ONCE AGAIN BE POSSIBLE EARLY ON WEDNESDAY./15/ && .PRELIMINARY POINT TEMPS/POPS... JACKSON 71 90 71 93 / 31 43 30 23 MERIDIAN 70 89 70 91 / 41 47 33 23 VICKSBURG 68 91 70 94 / 23 37 26 23 HATTIESBURG 72 90 73 92 / 37 44 21 35 NATCHEZ 70 89 72 92 / 24 41 24 29 GREENVILLE 69 91 71 95 / 15 18 18 14 GREENWOOD 69 91 71 94 / 23 28 26 18 && .JAN WATCHES/WARNINGS/ADVISORIES... MS...NONE. LA...NONE. AR...NONE. &&
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE JACKSON MS 201 PM CDT TUE AUG 20 2013 ARZ074-075-LAZ007>009-015-016-023>026-MSZ018-019-025>066-072>074- 211915- 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- 201 PM CDT TUE AUG 20 2013 THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL MISSISSIPPI... NORTHEAST LOUISIANA...AND EXTREME SOUTHEAST ARKANSAS. .DAY ONE...TONIGHT AND WEDNESDAY THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW. .DAYS TWO THROUGH SEVEN...WEDNESDAY NIGHT THROUGH MONDAY THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW. .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 MONDAY. FOR MORE INFORMATION PLEASE VISIT OUR WEBSITE AT WWW.SRH.NOAA.GOV/JAN. 26
MSZ072-073-202310- MARION MS-LAMAR MS- 538 PM CDT TUE AUG 20 2013 SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE JACKSON MS 538 PM CDT TUE AUG 20 2013 A STRONG THUNDERSTORM CAPABLE OF PRODUCING 40 TO 50 MPH WINDS WAS LOCATED OVER PINEBUR AT 538 PM CDT...MOVING NORTH AT 5 MPH. VERY HEAVY RAIN ALONG WITH CONTINUOUS CLOUD TO GROUND LIGHTNING ARE ALSO POSSIBLE WITH THIS STORM. PEOPLE IN WEST CENTRAL LAMAR AND EAST CENTRAL MARION COUNTIES SHOULD MONITOR THIS STORM CLOSELY. LAT...LON 3116 8986 3133 8959 3115 8957 3107 8977 TIME...MOT...LOC 2238Z 159DEG 5KT 3115 8969 MRM
The Jackson/Brandon,MS radar (KDGX), 120 km away, was scanning. The volume nearest the first event began at 00:03 UTC.
2 flash flood. Local standard time, as filed.
Street flooding occurred around Bailey.
Multiple streets were flooded around Laurel.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Mississippi in 2013Every state in 2013This day in weather historyWarnings in Mississippi, August 2013
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: 468414, 468416.