The combination of rich tropical moisture and an upper level disturbance brought isolated strong storms to Central Mississippi.
Every event with a place to put it; 1 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.
The combination of rich tropical moisture and an upper level disturbance brought isolated strong storms to Central Mississippi.
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 30, 9:04 AM CST, 3 hours 26 minutes earlier.
AREA FORECAST DISCUSSION...UPDATED NATIONAL WEATHER SERVICE JACKSON MS 1004 AM CDT SAT AUG 30 2014 .UPDATE...OTHER THAN MOVING UP THE ONSET OF WIDESPREAD RAIN...MADE NO OTHER CHANGES TO CURRENT FORECAST. CURRENT SURFACE ANALYSIS SHOWING WIDESPREAD WARM TROPICAL RAINS SPREADING NORTH ACROSS NE LA/SW MS. VERY LITTLE LIGHTNING WITH THIS AREA...PW/S NEAR 2.4 INCHES AND WET BULB ZERO HEIGHTS AROUND 15KFT SUGGEST THAT THESE PROCESSES WILL CONTINUE WITH HIGH PRECIPITATION EFFICIENCY AND UNDERESTIMATED RADAR AMOUNTS. KJAN 12 UA DATA SHOWING LAYER OF 30-40KNOT WIND FLOW BETWEEN 5 AND 20KFT. LATEST HRRR DATA IS IN AGREEMENT WITH OVERNIGHT FORECASTERS ASSESSMENT OF A WIND THREAT TODAY IN ITS ILLUSTRATION OF SHORT BOWING SEGMENTS IN THE FORECAST REFLECTIVITY...AS WELL AS...FORECAST WIND GUSTS OF 30-50 KNOTS WITH THE MORE ROBUST CONVECTION THIS AFTERNOON./26/ && .AVIATION...RAIN WILL BE A MORE HIT OR MISS FOR THE EASTERN AREAS THROUGH TONIGHT. CLOUDS WERE DISSIPATING FOR HBG...GTR AND MEI. AT THIS TIME...EXPECTING SCT-BKN CLOUDS WITH CEILINGS ABOUT 3000FT. THUNDERSTORMS MAY DEVELOP AFTER 18Z...SO INTERMITTENT LOW CLOUDS AND HEAVY RAIN WILL BE POSSIBLE. MAY ADD SOME TEMPO GROUPS FOR RAIN THROUGH 3Z. GLH WILL LIKELY HAVE RAIN THROUGH THE EVENING...WITH SOME SHORT BREAKS. EXPECTING RAIN AND/OR FOG TO MAINTAIN MVFR CONDITIONS THROUGH MUCH OF THE FORECAST PERIOD. THROUGH THE AFTERNOON AND EVENING LOW CLOUDS AND HEAVY RAIN MAY BRIEFLY LEAD TO LIFR...MAYBE IFR CONDITIONS. GWO...HKS...JAN WILL SEE MORE WIDESPREAD RAIN AFTER 18Z. WILL CONTINUE WITH VCTS...ESPECIALLY FOR JAN/HKS BY LATE AFTERNOON. MVFR/LIFR CONDITIONS WILL BE LIKELY WITH PERIODS OF HEAVY RAIN AND LOW CLOUDS. WILL ADD PATCHY FOG AND STRATUS TO ALL SITES FROM 9-12Z. /7/ && .PREV DISCUSSION... /ISSUED 336 AM CDT SAT AUG 30 2014/ SHORT TERM...ACTIVE WEATHER DAY ON TAP AS HIGHLY MOIST AIRMASS WILL FUEL SHRA/TSRA TODAY AS A DISTURBANCE LIFTS NORTHWARD OUT OF THE NORTHER GULF AND S-CENTRAL SECTIONS OF LA. RECENT DAYS WE HAVE BEEN ADVERTISING THE POTENTIAL FOR LOCALLY HEAVY RAINFALL AND SOME POTENTIAL FOR FLASH FLOODING. THIS RISK STILL EXISTS AS EFFICIENT RAINS WILL BE POSSIBLE AS FORCING FOR ASCENT WILL MAKE THE MOST OF THE 2.2-2.4 IN PW AIRMASS. HOWEVER...AN ADDITIONAL THREAT FOR GUSTY AND POSSIBLY DAMAGING WINDS EXISTS AS WELL. THE REASON FOR THIS NEW THREAT RESIDES IN THE INCREASED FLOW BETWEEN THE 2-12 KFT LAYER. NEARLY ALL GUIDANCE INDICATES THIS LAYER WILL CONTAIN 30-40 KTS OF FLOW. WHILE HEATING TODAY WILL BE LIMITED AND THE THERMODYNAMIC PROFILE WILL BE QUITE TAME...MID/UPPER 80S DEGREE TEMPS WILL SUPPORT SBCAPE NEAR 2000 J/KG AND THIS WILL BE MORE THAN ENOUGH ENERGY TO SUPPORT DEEP CONVECTION (ESP WITH THE DISTURBANCE PROVIDING STRONG FORCING). FURTHERMORE...ORGANIZING CONVECTION WILL BE ABLE TO UTILIZE THE INCREASED FLOW TO ORGANIZE COLD POOLS. IF ANY COLD POOL ORGANIZES IN A FASHION WHERE IT MOVES IN TANDEM WITH THE FLOW BELOW 12KFT (WHICH LOOKS TO BE IN A NNE DIRECTION) BOWING SEGMENTS WILL BE POSSIBLE AND LIKELY EFFICIENTLY BRING DOWN THE STRONGER WINDS ALOFT. IN TURN...THIS WILL INCREASE THE WIND DAMAGE POTENTIAL. IT IS ALSO WORTH NOTING THAT THE INCREASED FLOW WILL ALSO INCREASE THE LOW LEVEL HELICITY TO VALUES THAT COULD SUPPORT A BRIEF TORNADO. WHILE THIS IS NOT A PRIMARY THREAT...IT CAN'T BE RULED OUT. DUE TO ADDED RISKS...WILL INTRODUCE A LIMITED SVR RISK FOR DAMAGING WINDS. AS FOR A LOCATION...MOST OF THE AREA WILL HAVE A RISK...THE EXCEPTIONS LOOK TO THE BE THE FAR SW AND THE I-59 CORRIDOR. BEST TIMING WOULD BE FROM 11AM TO 5PM. THE HWO/GRAPHICS WILL HIGHLIGHT THE TIMING AND THREAT AREA. AS FOR OTHER FORECAST ELEMENTS (POPS AND WEATHER)...GUIDANCE POPS WERE HIGHER FROM THE PREV RUNS AND I FOLLOWED THOSE HIGH VALUES AND INCREASED SOME LOCATIONS TO STAY IN LINE WITH PREV FORECASTS. THE MAIN TIMING FOR THIS ACTIVITY WAS ADJUSTED...THE SW LOOKS TO BE THE AREA THAT GETS IT FIRST AND EARLIEST WITH THE REMAINDER OF THE AREA SOMETIME BETWEEN LATE MORNING AND LATE AFTERNOON. FOR THIS EVE/OVERNIGHT...MUCH MORE OF TRICKY FORECAST EXISTS FOR TONIGHT. IT SEEMS LIKE THERE WILL BE A LULL PERIOD FROM LATE AFTERNOON INTO MOST OF THE EVE...THEN ACTIVITY COULD PICK UP AFTER MIDNIGHT OVER THE NW/N AREAS. THE S HALF LOOKS TO SEE LESS ACTIVITY THAN PREV EXPECTED AS DRIER AIR MOVES NORTHWARD IN THE WAKE OF THE MAIN S/WV. SUNDAY LOOKS TO BE LESS ACTIVE AS WELL THANKS TO THE DRIER AIR MOVING UP FROM THE S/SE AROUND THE EVOLVING RIDGE. STILL...ENOUGH MOISTURE WILL EXIST FOR SOME ISO/SCT ACTIVITY. THE GFS WAS REALLY LOW WITH POPS AND I USED A BLEND OF THE GFS/EURO FOR THE POP FORECAST. WITH LESS PRECIP AROUND...LOOK FOR WARMER TEMPS (90-95). /CME/ LONG TERM...MONDAY THROUGH NEXT SATURDAY NEAR TO SLIGHTLY ABOVE NORMAL TEMPERATURES IN THE LOW TO MID 90S AND TYPICAL 20-30% AFTERNOON CHANCES OF SHOWERS/STORMS THROUGH MOST OF THE WEEK AS A HIGH PRESSURE RIDGE BUILDS OVER THE SE/CENTRAL CONUS. THE CURRENT SYSTEM RESPONSIBLE FOR ELEVATED RAIN CHANCES THIS WEEKEND WILL PULL OFF TO THE NE BY LABOR DAY AND A SUBTROPICAL H7-H5 RIDGE LOOKS TO BUILD IN FROM THE ATLANTIC WHILE THE NRN STREAM FLOW BECOMES MOSTLY ZONAL. DESPITE LOW-LVL HIGH PRESSURE AXIS AND SLOWLY BUILDING HEIGHT INFLUENCE OVER REGION MOST OF THE WEEK, PWATS WILL REMAIN ELEVATED /NEAR 2"/ AND COMBINED WITH DAILY AFTERNOON INSTABILITY /2000 J/KG+/, ISOLATED/SCATTERED SHOWERS/STORMS WILL BE LIKELY. OVERALL COVERAGE WONT BE GREAT BUT FEEL BEST COVERAGE WILL BE IN S/SE/E WHERE SEA-BREEZE CONVERGENCE AND HIGHEST PWATS WILL EXIST. HEAT INDICES MONDAY AND TUESDAY SHOULD REACH INTO THE LOW 100S FOR A FEW HOURS WITH LOWS ONLY FALLING INTO THE LOW TO MID 70S THROUGH MUCH OF THE WEEK. ON TUESDAY, A SLIGHTLY STRONGER S/WV TROUGH ACROSS THE CORN BELT WILL ATTEMPT TO BRING A BOUNDARY SOUTH TOWARDS THE REGION BUT FEEL IT STAY NORTH AND THUS KEPT POPS/SHOWERS OUT OF FORECAST FOR NORTHERN AREAS. FOR WEDNESDAY THROUGH FRIDAY, RIDGING WILL REMAIN OVER AREA AND STRENGTHEN SLIGHTLY BUT SEA-BREEZE INITIATED AND DIURNAL ACTIVITY SHOULD CONTINUE TO BE A GOOD POSSIBILITY EACH DAY. BY SATURDAY, THE RIDGING SLIPS FARTHER WEST AND PLACES REGION IN SLIGHTLY GREATER N/NE FLOW THAT COULD ENHANCE SHOWER COVERAGE POSSIBILITIES. /ALLEN/ && .PRELIMINARY POINT TEMPS/POPS... JACKSON 88 73 93 74 / 87 37 22 7 MERIDIAN 90 72 93 72 / 71 27 19 7 VICKSBURG 85 73 92 72 / 96 40 25 7 HATTIESBURG 91 75 96 74 / 74 19 12 13 NATCHEZ 85 73 92 74 / 92 30 18 12 GREENVILLE 84 73 91 73 / 98 60 39 6 GREENWOOD 86 74 92 73 / 96 58 39 6 && .JAN WATCHES/WARNINGS/ADVISORIES... MS...NONE. LA...NONE. AR...NONE. &&
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE JACKSON MS 501 AM CDT SAT AUG 30 2014 ARZ074-075-LAZ007>009-015-016-023>026-MSZ018-019-025>051-053>056- 059>065-072-311015- 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-CLAIBORNE-COPIAH-SIMPSON-SMITH- JEFFERSON-ADAMS-FRANKLIN MS-LINCOLN-LAWRENCE-JEFFERSON DAVIS- COVINGTON-MARION- 501 AM CDT SAT AUG 30 2014 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHEAST ARKANSAS...NORTHEAST LOUISIANA...CENTRAL MISSISSIPPI...NORTH CENTRAL MISSISSIPPI...AND SOUTH CENTRAL MISSISSIPPI. .DAY ONE...TODAY AND TONIGHT SEVERE THUNDERSTORMS THREAT...LIMITED TIMING...TODAY FLOODING THREAT...LIMITED TIMING...TODAY A FEW STRONG TO SEVERE STORMS WILL BE POSSIBLE TODAY...MAINLY BETWEEN 11 AM AND 6 PM. DAMAGING WIND GUSTS WILL BE THE PRIMARY THREAT. ADDITIONALLY...LOCALLY HEAVY RAINFALL WILL BE POSSIBLE WITH SOME RAINFALL TOTALS AS HIGH AS 2 TO 4 INCHES WHICH MAY LEAD TO FLASH FLOODING. (WWW.SRH.NOAA.GOV/GRAPHICAST.PHP?SITE=JAN&GC=1) .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY 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 MAY BE NEEDED FOR PORTIONS OF THE REGION TODAY. MSZ052-057-058-066-073-074-311015- LAUDERDALE-JASPER-CLARKE-JONES-LAMAR-FORREST- 501 AM CDT SAT AUG 30 2014 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EAST CENTRAL MISSISSIPPI...AND SOUTHEAST MISSISSIPPI. .DAY ONE...TODAY AND TONIGHT THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY 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 FRIDAY. CME && ...HAZARD LEGEND... *SEVERE THUNDERSTORMS* EXTREME...CONFIDENT IN SEVERE THUNDERSTORMS WITH WIND GUSTS OF 75 MPH OR GREATER AND/OR 2 INCH DIAMETER OR LARGER HAIL. HIGH...SEVERE THUNDERSTORMS POSSIBLE WITH WIND GUSTS OF 75 MPH OR GREATER AND/OR 2 INCH DIAMETER OR LARGER HAIL. ELEVATED...CONFIDENT IN SEVERE THUNDERSTORMS WITH WINDS GUSTS OF 60 MPH OR GREATER AND/OR 1 INCH DIAMETER OR LARGER HAIL. LIMITED...SEVERE THUNDERSTORMS POSSIBLE WITH WIND GUSTS OF 60 MPH OR GREATER AND/OR 1 INCH DIAMETER OR LARGER HAIL. *FLOODING* EXTREME...CONFIDENT IN SIGNIFICANT FLOODING. HIGH...SIGNIFICANT FLOODING POSSIBLE. ELEVATED...CONFIDENT IN FLOODING. LIMITED...FLOODING POSSIBLE. ...USEFUL WEATHER WEB PAGES (URLS)... NWS JAN HOME PAGE... WWW.WEATHER.GOV/JAN STAY AWARE, STAY SAFE NWS JAN BRIEFING PAGE... WWW.SRH.NOAA.GOV/JAN/?N=SAFE NWS JAN TROPICAL PAGE... WWW.SRH.NOAA.GOV/JAN/?N=TROPICAL NATIONAL HURRICANE CENTER HOME PAGE... WWW.NHC.NOAA.GOV/ FIND NWS JAN ON FACEBOOK... WWW.FACEBOOK.COM/NWSJACKSONMS FOLLOW NWS JAN ON TWITTER... @NWSJACKSONMS ...ADDITIONAL URLS FOR SEVERE WEATHER ISSUES... STORM PREDICTION CENTER (SPC)... WWW.SPC.NOAA.GOV/ SPC...MESO ANALYSIS... WWW.SPC.NOAA.GOV/EXPER/MESOANALYSIS/NEW/# SPC...DAY 1 THROUGH 3 OUTLOOKS... WWW.SPC.NOAA.GOV/PRODUCTS/OUTLOOK/ SPC...STORM REPORTS... WWW.SPC.NOAA.GOV/CLIMO/ NWS JAN CURRENT SVR/TOR WATCHES... WWW.SRH.NOAA.GOV/RTIMAGES/JAN/WATCH/TOASVA.PNG ...ADDITIONAL URLS FOR FLOODING ISSUES... LOWER MISSISSIPPI RIVER RFC HOME PAGE... WWW.SRH.NOAA.GOV/LMRFC/ NWS SIGNIFICANT RIVER FLOOD OUTLOOK... WWW.HPC.NCEP.NOAA.GOV/NATIONALFLOODOUTLOOK/INDEX.HTML WPC DAY 1 THROUGH 3 EXCESSIVE RAINFALL... WWW.HPC.NCEP.NOAA.GOV/QPF/EXCESS_RAIN.SHTML WPC EXCESSIVE RAINFALL DISCUSSION... WWW.HPC.NCEP.NOAA.GOV/DISCUSSIONS/QPFERD.HTML WPC DAY 1 THROUGH 7 QPF... WWW.HPC.NCEP.NOAA.GOV/QPF/QPF2.SHTML WPC QPF DISCUSSION... WWW.HPC.NCEP.NOAA.GOV/DISCUSSIONS/QPFHSD.HTML NWS JAN OBSERVED PRECIPITATION IMAGES... WWW.SRH.NOAA.GOV/JAN/?N=PRECIPMAPS PLEASE CONVERT ALL WEB ADDRESSES TO LOWER CASE BEFORE ENTERING!
MSZ057-062>066-072>074-301830-
MARION MS-LINCOLN MS-LAWRENCE MS-LAMAR MS-JONES MS-JEFFERSON DAVIS MS-
JASPER MS-FORREST MS-COVINGTON MS-
1229 PM CDT SAT AUG 30 2014
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
1229 PM CDT SAT AUG 30 2014
A LINE OF STRONG THUNDERSTORMS CAPABLE OF PRODUCING 40 TO 50 MPH
WINDS WAS LOCATED FROM SONTAG TO 8 MILES SOUTH OF SANDY HOOK AT 1229
PM CDT...MOVING EAST AT 30 MPH.
DANGEROUS CLOUD TO GROUND LIGHTNING IS ALSO POSSIBLE WITH THESE
STORMS.
THESE STORMS ARE INTENSIFYING AND COULD BECOME SEVERE.
HIGH WINDS CAN BRING DOWN TREES AND LARGE LIMBS RESULTING IN SERIOUS
INJURY OR PROPERTY DAMAGE. EXERCISE EXTREME CAUTION WHEN OUTDOORS
DURING SUCH STRONG WINDS...AND BE ESPECIALLY AWARE OF OLDER TREES.
PEOPLE IN COVINGTON...FORREST...EXTREME SOUTHEASTERN JASPER...
JEFFERSON DAVIS...JONES...LAMAR...LAWRENCE...EAST CENTRAL LINCOLN AND
MARION COUNTIES SHOULD MONITOR THESE STORMS CLOSELY.
LAT...LON 3100 8935 3100 8941 3097 8943 3097 8947
3101 8951 3100 8983 3107 8985 3107 8992
3112 8995 3113 9001 3124 9005 3132 9005
3134 9015 3164 9033 3183 8893 3143 8898
3143 8914 3091 8913 3091 8934
TIME...MOT...LOC 1729Z 261DEG 27KT 3166 9018 3093 8978MSZ049-054>056-063>065-301910-
SMITH MS-SIMPSON MS-RANKIN MS-LAWRENCE MS-JEFFERSON DAVIS MS-
COVINGTON MS-COPIAH MS-
112 PM CDT SAT AUG 30 2014
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
112 PM CDT SAT AUG 30 2014
A LINE OF STRONG THUNDERSTORMS CAPABLE OF PRODUCING 40 TO 50 MPH
WINDS WAS LOCATED FROM ROCKPORT TO MELBA AT 112 PM CDT...MOVING NORTH
AT 25 MPH.
VERY HEAVY RAIN IS ALSO POSSIBLE WITH THESE STORMS.
PEOPLE IN EAST CENTRAL COPIAH...COVINGTON...JEFFERSON DAVIS...
NORTHEASTERN LAWRENCE...SOUTHERN RANKIN...SIMPSON AND SMITH COUNTIES
SHOULD MONITOR THESE STORMS CLOSELY.
LAT...LON 3178 9030 3225 9010 3224 8973 3222 8973
3222 8932 3180 8934 3179 8940 3150 8940
3143 8948 3143 8978
TIME...MOT...LOC 1812Z 200DEG 23KT 3181 9019 3145 8967MSZ043-048>050-301905-
SCOTT MS-RANKIN MS-MADISON MS-HINDS MS-
119 PM CDT SAT AUG 30 2014
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
119 PM CDT SAT AUG 30 2014
A LINE OF STRONG THUNDERSTORMS CAPABLE OF PRODUCING 40 TO 50 MPH
WINDS WAS LOCATED FROM 3 MILES NORTH OF DRY GROVE TO 5 MILES
SOUTHEAST OF JOHNS AT 119 PM CDT...MOVING NORTHEAST AT 25 MPH.
ANOTHER LINE OF STORMS WILL ALSO MOVE NORTH THROUGH THE AREA...
BRINGING GUSTY WINDS AND HEAVY DOWNPOURS.
VERY HEAVY RAIN IS ALSO POSSIBLE WITH THESE STORMS.
HIGH WINDS CAN BRING DOWN TREES AND LARGE LIMBS RESULTING IN SERIOUS
INJURY OR PROPERTY DAMAGE. EXERCISE EXTREME CAUTION WHEN OUTDOORS
DURING SUCH STRONG WINDS...AND BE ESPECIALLY AWARE OF OLDER TREES.
PEOPLE IN EASTERN HINDS...SOUTHERN MADISON...RANKIN AND SCOTT
COUNTIES SHOULD MONITOR THESE STORMS CLOSELY.
LAT...LON 3222 8958 3222 8973 3204 8973 3205 9017
3211 9059 3265 9028 3254 8940
TIME...MOT...LOC 1819Z 205DEG 23KT 3218 9043 3210 8976The Jackson/Brandon,MS radar (KDGX), 43 km away, was scanning. The volume nearest the first event began at 20:55 UTC.
1 strong wind, 1 thunderstorm wind. Local standard time, as filed.
Eleven hundred Entergy customers were without power across northeast Jackson after gusty thunderstorms pushed through the city.
Power lines were down along Country Ridge Road.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Mississippi in 2014Every state in 2014This day in weather historyWarnings in Mississippi, August 2014
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: 535006, 535008.