An upper level low over Mississippi combined forces with a warm, moist and unstable air mass to trigger several severe thunderstorms on May 28th and 29th. A couple storms developed on May 30th as well, but the bulk of the activity was on the prior two days.
Every event with a place to put it. 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.
An upper level low over Mississippi combined forces with a warm, moist and unstable air mass to trigger several severe thunderstorms on May 28th and 29th. A couple storms developed on May 30th as well, but the bulk of the activity was on the prior two days. Reports of damaging winds and large hail in excess of 1 inch were received across the state.
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 May 28, 9:57 AM CST, 4 hours 26 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE JACKSON MS 1057 AM CDT FRI MAY 28 2010 .UPDATE... MADE SOME MINOR ADJUSTMENTS TO TODAY'S FORECAST TO DELAY BETTER SHOWER/TSTM CHANCES UNTIL A LITTLE LATER IN THE AFTERNOON BASED ON THE LATEST NAM AND LOCAL WRF GUIDANCE...BUT ALL ELSE IS ON TRACK. ALTHOUGH THE AIRMASS IS A LITTLE ON THE DRY SIDE WITH PRECIPITABLE WATER < 1.5 INCHES...AREA MORNING SOUNDINGS CONFIRM STEEPER MID LEVEL LAPSE RATES MENTIONED PREVIOUSLY WITH JAN/LIX/BMX SHOWING VERTICAL TOTALS IN THE MID 20S...AND WITH THE APPROACH OF THE MID LEVEL TROUGH FROM THE NORTH...THERE WILL BE SUFFICIENT LIFT AND INCREASING INSTABILITY TO SUPPORT SCATTERED SHOWER/TSTM ACTIVITY WITH POSSIBLE PULSE TYPE TO MULTICELL SEVERE GIVEN ~15KTS OF MID LEVEL FLOW. /EC/ && .PREV DISCUSSION... /ISSUED 349 AM CDT FRI MAY 28 2010/ SHORT TERM...THE GFS MODEL IS THE OUTLIER IN THE PRECIP FIELD FOR TODAY...REMAINING GENERALLY DRY WHILE OTHER MODELS SUGGEST CHANCE OF PRECIP ACROSS MUCH OF THE FORECAST AREA. OF INTEREST IS THE FACT THAT ALL BUT ONE OF THE GFS ENSEMBLE MEMBERS BRING PRECIP TO THE AREA TODAY...PARTICULARLY OVER S/SWRN ZONES WHILE THE OPERATIONAL GFS APPEARS TO BE FOLLOWING THE TREND OF A SINGLE MEMBER. CHANCES FOR CONVECTION WILL INCREASE FROM THE NORTH TODAY AS AN UPPER TROUGH PIVOTS INTO NRN MS IN NLY FLOW AROUND THE LARGE EAST COAST TROUGH. SATELLITE PIX SHOW THE SHORTWAVE DROPPING SWD THROUGH THE MIDWEST THIS MORNING WITH A BAROCLINIC ZONE EXTENDING SWWD INTO NRN PORTIONS OF THE ARKLAMISS. VERTICAL TOTALS ARE FORECAST TO INCREASE TO THE UPPER 20S OVER SOME NRN/CNTRL ZONES AND REACH 30+ OVER THE NE BY 00Z SAT DUE TO COOLER UPPER TEMPS ASSOCIATED WITH THE SHORTWAVE. WILL MAINTAIN HIGHER POPS CLOSER TO PREV FORECAST. INSOLATION ON THE MOIST AIR MASS CURRENTLY IN PLACE WILL CONTRIBUTE TO CONVECTION... ALTHOUGH IT WILL BE DIFFICULT TO PINPOINT EXACT AREAS DUE TO THE EXISTENCE OF OUTFLOW BOUNDARIES FROM CONVECTION THURSDAY. WILL MAINTAIN POSSIBILITY OF ISOLATED STRONG TO SEVERE STORMS THIS AFTERNOON AND EVENING FOR ALL AREAS. SIG SVR PARAMS ARE FORECAST TO CLIMB ABOVE 12K FOR MOST AREAS ALONG AND WEST OF THE NATCHEZ TRACE CORRIDOR BY 00Z SAT. INCREASED POPS FOR TONIGHT TO ACCOUNT FOR AT LEAST ISOLATED CONVECTION DURING THE EARLY EVENING...ALTHOUGH IT WOULD NOT BE SURPRISING IF COVERAGE WAS A LITTLE HIGHER THROUGH 8 PM OR SO. HAVE FOLLOWED MAV POPS FOR HIGHER COVERAGE OF SCATTERED CONVECTION SATURDAY AS THE SHORTWAVE TRACKS SWD INTO CENTRAL/SRN ZONES. COOLER 500 TEMPS ASSOCIATED WITH THE UPPER TROUGH WILL RESULT IN HIGH VERTICAL TOTALS FARTHER SOUTH...30 DEG BULLSEYE FORECAST OVER CNTRL ZONES 18Z SAT...FOR STRONG TO SEVERE STORMS OVER THE AREA. LONG TERM...SUNDAY THROUGH FRIDAY...THE PRIMARY CONCERNS WILL BE WITH THE CLOSED UPPER LOW AFFECTING THE REGION FOR SUNDAY... WHICH MAY INCREASE OUR THUNDERSTORM COVERAGE AS WELL AS CHANCE OF STRONG TO SEVERE STORMS FOR SUNDAY BEFORE MOVING OUT BY MONDAY. THE SECONDARY CONCERNS WILL BE THE FLATTENING OF THE UPPER RIDGE AS A BROAD UPPER TROUGH DEVELOPS OVER THE REGION BY THURSDAY INTO FRIDAY. ALSO CONCERNED WITH ASSOCIATED POPS AND TEMPS THROUGH THE PERIOD. GLOBAL MODELS AS WELL AS CANADIAN GEM AND ENSEMBLES FORECAST THAT THE UPPER RIDGE WILL CONTINUE TO ADJUST AND BECOME GRADUALLY FLATTER THROUGH THE PERIOD. FOR SUNDAY THE UPPER RIDGE WILL BE CENTERED ACROSS THE SOUTHERN PLAINS AND THE EASTERN US COAST. A CLOSED UPPER LOW WILL BE OVER THE REGION ON SUNDAY. THE CLOSED UPPER LOW OVER OUR SOUTHEAST WILL WILL OPEN UP BY SUNDAY NIGHT INTO MONDAY. WE WILL CONTINUE TO HAVE SOME GOOD LIFT...INSTABILITY AND FLOW OVER THE REGION FOR SUNDAY. THE EURO AND CANADIAN OPENS THE LOW BY MONDAY AFTERNOON. THE UPPER TROUGH WILL LIFT NORTHEAST OF THE REGION BY MONDAY NIGHT WHICH WAS SHADOWED BY THE EURO AND CANADIAN AS WELL. MOST OF THE GFS AND EURO ENSEMBLES HAVE THE CLOSED UPPER LOW AND PUSH IT AWAY FROM THE REGION BY MONDAY EVENING. AS WE GO INTO THE EARLY TO MIDDLE PORTION OF NEXT WEEK WE WILL GO BACK TO DIURNAL CONVECTION WITH THE FLAT UPPER RIDGE OVER THE REGION. AN UPPER TROUGH WILL DEVELOP EASTWARD THROUGH THE ROCKIES INTO THE PLAINS BY LATE WEDNESDAY INTO THURSDAY. THE EURO WAS A LITTLE FASTER AS THE GFS HAS SLOWED THE TRACK OF THIS FEATURE FROM WEDNESDAYS RUN. THIS WILL HELP TO SUPPRESS THE FLAT RIDGE BY THURSDAY EVENING AS THE UPPER TROUGH DEVELOPS OVER THE REGION BY LATE THURSDAY INTO FRIDAY. THIS WAS CONFIRMED BY THE GFS AND EURO ENSEMBLES. THIS COULD GIVE THE REGION SOME DECENT CHANCES OF RAIN FOR THURSDAY INTO FRIDAY. WE WILL GET SOME UPPER JET ENERGY COMING OUT OF SOUTH TEXAS ON WEDNESDAY WHICH WILL CROSS THE REGION FOR WEDNESDAY THROUGH FRIDAY. THIS JET ENERGY WILL BE ENHANCE WITH THE UPPER TROUGH DEVELOPING FOR THURSDAY INTO FRIDAY. THIS COULD ENHANCE OUR CHANCES OF STRONG STORMS FOR THE MIDDLE TO LATER PORTION OF THE WORK WEEK. THE GFS ENSEMBLES WERE IN AGREEMENT...WHILE THE EURO AND ITS ENSEMBLES SHOWED WEAKER JET FLOW OVER THE REGION. WITH THE CLOSED LOW IN MIND WILL CONTINUE SOME SEVERE WORDING FOR SUNDAY AND HOLD OFF ON ANY MENTION OF IT FOR THE MIDDLE OF NEXT WEEK UNTIL THERE IS MORE AGREEMENT WITH THE LOW ASSOCIATED WITH THE UPPER TROUGH. AS FAR AS POPS ARE CONCERNED MADE SOME MINOR ADJUSTMENTS TO MEX POPS...ESPECIALLY WITH THE CLOSED UPPER LOW FOR SUNDAY AND THE JET SEGMENT ENHANCING CHANCES OF RAIN FOR THE MIDDLE TO LATER PART OF NEXT WEEK. AS FAR AS TEMPS ARE CONCERNED MADE SLIGHT ADJUSTMENTS TO MEX...MOS AND MEN GUIDANCE. GOING GENERALLY WITH LOWS FROM MAINLY THE MIDDLE 60S TO THE LOWER 70S AS WELL AS HIGHS FROM THE UPPER 80S TO LOWER 90S. THE EXCEPTION WAS HIGHS FOR SUNDAY IN THE MID TO UPPER 80S WITH THE CLOSED UPPER LOW. /17/ && .AVIATION... WILL SEE INCREASING CLOUDS BECOMING 4-6K FT BKN WITH ISOLATED TSTMS BY NOON AND THEN SCATTERED TSTMS INTO THE EARLY EVENING. SOME SEVERE STORMS WILL BE POSSIBLE THIS AFTERNOON AND EVENING. VFR CONDITIONS SHOULD PREVAIL OVERNIGHT WITH SOME PATCHY MVFR SHALLOW FOG 08-13Z SAT BEFORE ANOTHER ROUND OF SHOWERS AND TSTMS SATURDAY. && .JAN WATCHES/WARNINGS/ADVISORIES... MS...NONE. LA...NONE. AR...NONE. &&
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE JACKSON MS 351 AM CDT FRI MAY 28 2010 ARZ074-075-LAZ007>009-015-016-023>026-MSZ018-019-025>066-072>074- 290900- 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- 351 AM CDT FRI MAY 28 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL MISSISSIPPI... NORTHEAST LOUISIANA...AND EXTREME SOUTHEAST ARKANSAS. .DAY ONE...TODAY AND TONIGHT ISOLATED SEVERE THUNDERSTORMS WILL BE POSSIBLE THIS AFTERNOON AND EVENING. THEY WILL HAVE THE POTENTIAL FOR DAMAGING WIND GUSTS TO 60 MPH AND QUARTER SIZE HAIL. PERIODS OF HEAVY RAINFALL WILL ALSO BE POSSIBLE IN STRONGER STORMS. A WEATHER DISTURBANCE WILL DROP INTO THE REGION TODAY. THIS FEATURE WILL PRODUCE SCATTERED THUNDERSTORMS OVER MUCH OF THE AREA AND WILL SUPPORT ISOLATED SEVERE STORMS DURING THE AFTERNOON AND EVENING. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY SEVERE THUNDERSTORMS WILL BE POSSIBLE AGAIN SATURDAY AND SUNDAY. THESE STORMS WILL HAVE THE POTENTIAL FOR DAMAGING WIND GUSTS AND LARGE HAIL. PERIODS OF HEAVY RAINFALL WILL ALSO BE POSSIBLE AND MAY PRODUCE PONDING WATER IN LOW LYING AREAS ESPECIALLY WHERE STORMS TRAIN OVER THE SAME AREAS. A LOW PRESSURE SYSTEM WILL CONTINUE TO TRACK TO THE SOUTH ACROSS THE REGION DURING THE WEEKEND. THIS SYSTEM WILL CAUSE FURTHER DESTABILIZATION OF THE AIR MASS AND PRODUCE ISOLATED SEVERE STORMS. THE DISTURBANCE WILL EXIT THE REGION BY MONDAY. .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 NECESSARY THROUGH SUNDAY. FOR MORE INFORMATION PLEASE VISIT OUR WEBSITE AT WWW.SRH.NOAA.GOV/JAN. THIS INCLUDES THE GRAPHICAL HAZARDOUS WEATHER OUTLOOK. 03
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE JACKSON MS 1242 PM CDT FRI MAY 28 2010 MSZ043-281810- MADISON MS- 1242 PM CDT FRI MAY 28 2010 A STRONG THUNDERSTORM CAPABLE OF PRODUCING PEA TO DIME SIZE HAIL AND 40 TO 50 MPH WINDS WAS LOCATED 6 MILES NORTH OF GLUCKSTADT AT 1242 PM CDT...MOVING SOUTH AT 15 MPH. DANGEROUS CLOUD TO GROUND LIGHTNING IS ALSO POSSIBLE WITH THIS STORM. PEOPLE IN CENTRAL MADISON COUNTY SHOULD MONITOR THIS STORM CLOSELY. EEC
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE JACKSON MS 118 PM CDT FRI MAY 28 2010 MSZ043-048-049-281845- HINDS MS-RANKIN MS-MADISON MS- 118 PM CDT FRI MAY 28 2010 A STRONG THUNDERSTORM CAPABLE OF PRODUCING PEA TO DIME SIZE HAIL AND 40 TO 50 MPH WINDS WAS LOCATED 3 MILES EAST OF MADISON AT 117 PM CDT...MOVING SOUTH AT 20 MPH. PEOPLE IN SOUTH CENTRAL MADISON...CENTRAL RANKIN AND EXTREME EAST CENTRAL HINDS COUNTIES SHOULD MONITOR THIS STORM CLOSELY. JF
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE JACKSON MS 211 PM CDT FRI MAY 28 2010 MSZ042-043-048-281940- HINDS MS-MADISON MS-YAZOO MS- 211 PM CDT FRI MAY 28 2010 A STRONG THUNDERSTORM CAPABLE OF PRODUCING PEA TO DIME SIZE HAIL AND 40 TO 50 MPH WINDS WAS LOCATED 7 MILES NORTHEAST OF FLORA AT 211 PM CDT...MOVING SOUTH AT 15 MPH. PEOPLE IN SOUTH CENTRAL YAZOO...CENTRAL MADISON AND NORTHEASTERN HINDS COUNTIES SHOULD MONITOR THIS STORM CLOSELY. JF
The Jackson/Brandon,MS radar (KDGX), 75 km away, was scanning. The volume nearest the first event began at 20:21 UTC.
7 hail, 4 thunderstorm wind. Local standard time, as filed.
A couple of trees were downed along Mosley Gap Road.
Several trees were blown down along I-20/I-59 just west of the Mississippi/Alabama border. Traffic was blocked along the interstate.
Quarter size hail covered the ground along Butler Road and Shaqualak Road, damaging at least 1 vehicle on Butler Road. In addition, nearby crops were damaged by hail in excess of 1 inch in diameter along Shuqualak Road.
Wind associated with a thunderstorm downed several trees, and blew trim and an antennae off a house along Shaqualak Road. In addition, multiple trees and large limbs were downed near the Butler community.
Several trees were blown down around the city of Greenwood. A couple trees blocked roadways causing a few accidents. Power was knocked out in Greenwood as well as out in the county.
The hail fell along Campbell Swamp Road.
The hail fell on Tithelo Road.
Quarter size hail fell on Henderson Road, along with estimated 40mph winds.
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, May 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: 234319, 234320, 234305, 234318, 234322, 234323, 236018, 234325, 236026, 234326, 234327.