Multiple eastward moving storms along a stationary boundary caused flooding across much of southeast Arkansas. Roads were under water in Parkdale.
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.
Multiple eastward moving storms along a stationary boundary caused flooding across much of southeast Arkansas. Roads were under water in Parkdale. NWS Doppler Radar estimated 4 to 6 inches of rain fell across this region. Quarter sized hail also fell in Eudora in Chicot County.
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 Sep 26, 8:18 PM CST, 6 hours 27 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE JACKSON MS 918 PM CDT MON SEP 26 2011 .UPDATE...COOL FRONT CONTINUES TO SLIDE SOUTHWARD THROUGH THE HIGHWAY 84 CORRIDOR WITH WEAKER TO NEARLY STALLED MOMENTUM ALONG THE WESTERN FLANK ACROSS CENTRAL LOUISIANA. AS MID TO UPPER-LVL DEPARTS NE...FRONTAL MOMENTUM SHOULD CONTINUE TO LAG AND STALL. MEANWHILE...A SURFACE LOW ACROSS TEXAS WILL AID IN SOME WEAK SOUTHERN FLOW AT THE SURFACE AND LOW-LVLS AND THEN VEERING WESTWARD THROUGH 10-15 KFT. THE NEARLY STATIONARY FRONT TONIGHT LOOKS TO LIFT NORTHWARD THROUGH THE EARLY MORNING HOURS. WITH WAA AND SRLY/WRLY MODERATE ISENTROPIC UPGLIDE OVER-TOP OF THE STABLE BOUNDARY LAYER COULD RESULT IN SHOWERS AND THUNDERSTORMS. HOWEVER...AREAS FARTHER EAST WILL HAVE GREATER STABLE LAYER DEPTH WITH LFC/S NEAR 11 TO 12KFT WITH LIMITED INSTABILITY ABOVE. WITH MUCAPE VALUES ~2000 J/KG SOUTH OF I-20 AND FARTHER WEST...SOME THUNDERSTORMS MAY BECOME STRONG TO SEVERE WITH QUARTER SIZED HAIL AND SOME DAMAGING WIND GUSTS. LOWER LFC/S AND BETTER LAPSE RATES IN THE PRESENCE OF BETTER FORCING SHOULD ALLOW FOR A BETTER ENVIRONMENT FOR SUCH STORMS TO DEVELOP. AS FOR UPDATES TO THE GOING FORECAST...CLOUD COVER WAS ADJUSTED DOWN FOR CLEARING SKIES BEHIND THE FRONT. GIVEN LACK OF MID-LVL DECK THUS FAR...HAVE PUSHED BACK TIMING OF SHOWERS AND THUNDERSTORMS TO JUST AFTER MIDNIGHT WHILE REDUCING POPS SLIGHTLY ACROSS EASTERN AREAS. WITH CLEARING SKIES AND CALM WINDS...DROPPED TEMPS ONE TO TWO DEGREES FOR OVERNIGHT LOWS AT SOME SELECT SPOTS. UPDATED AVIATION IS BELOW. /ALLEN/ && .AVIATION...ALL SITES WILL REMAIN VFR THROUGH THE LATE EVENING. HOWEVER...2-4 KFT SCT TO BKN STRATUS DEVELOPMENT WILL OCCUR ALONG WITH A SCT TO BKN 10 TO 12 MID-LVL DECK THROUGH 7-12Z ACROSS WEST AND SOUTHWEST AREAS. IN ADDITION...PATCHY GROUND FOG RESULTING IN 3 TO 4 SM COULD OCCUR ACROSS KMEI AND KHBG THROUGH THE DAWN HOURS WHERE IT WILL BE MORE CLEAR. SHOWERS AND THUNDERSTORMS COULD DEVELOP THROUGH THIS SAME TIME FRAME AND IMPACT AREAS ALONG AND SOUTH OF I-20. MVFR TO IFR CONDITIONS MAY BE POSSIBLE IN HEAVIER THUNDERSTORM ACTIVITY THROUGH THE DAWN HOURS. INTENSITY OF ACTIVITY SHOULD DECREASE THROUGH THE LATE MORNING HOURS BUT HAVE PLACED VCTS/VCSH IN TAFS FOR CENTRAL AND SOUTHERN AREAS THROUGH LATE MORNING. HAVE LEFT NORTHERN TAFS VFR THROUGH PERIOD AS BOUNDARY LOOKS TO REMAIN FARTHER SOUTH WITH ONLY HIGH CLOUD DECK. /ALLEN/ && .PREV DISCUSSION... /ISSUED 343 PM CDT MON SEP 26 2011/ SHORT TERM...MODELS CONTINUE TO SHOW THE BOUNDARY LIFTING SLOWLY NWD AS A WARM FRONT TONIGHT. WSW FLOW IN THE WAKE OF THE RETREATING FRONT WILL RESULT IN WARM AIR ADVECTION AND ISENTROPIC LIFT ACROSS THE AREA. DEEPER MOISTURE LIFTS BACK ACROSS CENTRAL INTO NRN ZONES BY SUNRISE TUESDAY AS DOES MOIST UNSTABLE AIR WITH 850 MB THETA E VALUES AROUND 340 DEGS..RESULTING IN GOOD THETAE ADVECTION ACROSS MOST OF THE FORECAST AREA TONIGHT. WITH PLENTY OF MOISTURE TO WORK WITH AND FORCING PROVIDED BY THE RETREATING BOUNDARY...THE AIR MASS WILL REMAIN SUFFICIENTLY UNSTABLE FOR POTENTIALLY STRONG TO SEVERE CONVECTION OVERNIGHT. VERTICAL TOTALS ARE FORECAST IN THE UPPER 20S TO LOWER 30S AROUND MIDNIGHT AND HEALTHY LAPSE RATES CONTINUE OVERNIGHT. MODEL CONSENSUS IS THAT DEEP LAYER SHEAR WILL BE MORE THAN SUFFICIENT TO SUPPORT STORM DEVELOPMENT WITH VALUES ABOVE 30 KTS ALONG AND N OF THE I-20 CORRIDOR. UPPER DIVERGENCE WILL ALSO INCREASE A BIT OVERNIGHT. THE PRIMARY SEVERE RISK WILL BE HAIL AND POSSIBLY WINDS AS CONVECTION WILL GENERALLY REMAIN ELEVATED. ALTHOUGH THE PRESENCE OF THE BOUNDARY INTRODUCES THE POSSIBILITY OF TORNADO DEVELOPMENT ALONG THE REGION OF SHEAR ON THE FRONT FORECAST HELICITIES ARE LOW AND TORNADO RISK IS LOW. HAVE FOLLOWED RECENT TREND AND INCREASED MAV MOS POPS ACROSS THE AREA FOR OVERNIGHT AND WILL MAINTAIN MENTION OF SEVERE POTENTIAL IN THE HWO. WEAK ISENTROPIC LIFT PERSISTS EARLY TUESDAY...LETTING UP DURING THE AFTERNOON. THE REMNANTS OF THE BOUNDARY PERSIST BUT ARE WEAK AND DIFFICULT TO PINPOINT. A WEAK WAVE WILL SWING ACROSS THE REGION AND LOW LEVEL MOISTURE WILL PERSIST WITH 850 MB THETAE VALUES AGAIN AROUND 340 DEGS. THE AIR MASS WILL REMAIN UNSTABLE...PARTICULARLY ALONG AND S OF I-20...BUT THE POSITION OF THE BOUNDARY WILL DETERMINE THE BEST FOCUS FOR AFTERNOON STORM DEVELOPMENT. SHORTWAVES WILL CONTINUE TO PIVOT INTO THE AREA TUESDAY NIGHT THROUGH WEDNESDAY NIGHT...PROVIDING PERIODS OF GENERAL LIFT ACROSS THE AREA. THE REMNANTS OF THE BOUNDARY WILL PERSIST ACROSS THE AREA AND THE AIR MASS WILL REMAIN UNSTABLE AND MOIST...WITH THE HIGHEST VERTICAL TOTALS AND 850 MB THETAE VALUES ALONG AND S OF I-20. WILL FORGO ADJUSTMENTS CONSIDERING UNCERTAINTY REGARDING THE FRONTAL POSITION AND FOLLOW MAV MOS POPS...GENERALLY BROADBRUSHING CHANCE POPS ACROSS THE FORECAST AREA TUESDAY TONIGHT THEN ISOLATED CONVECTION WEDNESDAY AND WEDNESDAY NIGHT AS THE BOUNDARY CONTINUES TO WEAKEN. /03/ LONG TERM...LONG RANGE MODELS AND ENSEMBLES GENERALLY AGREE THAT THE CUT OFF LOW OVER THE UPPER MISSISSIPPI VALLEY WILL BE PICK UP AND BE REPLACED BY ANOTHER CLOSED UPPER LOW...FARTHER EAST OVER THE NORTHEAST CONUS DURING THE PERIOD. THIS WILL HELP TO BRING SOME DRIER AND COOLER AIR FOR THIS COMING WEEKEND. FOR THURSDAY...HIGH PRESSURE TO THE NORTH WILL PUSH THE FRONTAL BOUNDARY TO THE SOUTH ON THURSDAY. THE RAINS WILL END IN THE SOUTH BY LATE THURSDAY NIGHT. FOR FRIDAY THROUGH MONDAY...A DECENT COLD FRONT WILL PUSH THROUGH THE REGION ON FRIDAY...WHICH WILL BRING A COOL DRY AIRMASS FOR THIS WEEKEND. THIS WILL START TO AFFECT OUR TEMPS FOR MAINLY FRIDAY NIGHT INTO THIS WEEKEND. LOWS OVER THE WEEKEND WILL DIP INTO 40S AND 50S. HIGHS WILL BE MAINLY IN THE 70S FOR SATURDAY AND SUNDAY AS WELL AS MONDAY. AN UPPER RIDGE AXIS WILL BUILD ACROSS THE REGION FROM THE PLAINS DURING THE WEEKEND. AS FAR AS TEMPS ARE CONCERNED HAVE GONE WITH A BLEND OF ENSEMBLES...MEX AND GMOS GUIDANCE. AS FAR AS POPS ARE CONCERNED WENT CLOSER TO A BLEND OF GMOS AND MEX GUIDANCE. /17/ && .PRELIMINARY POINT TEMPS/POPS... JACKSON 63 86 64 87 / 23 17 44 16 MERIDIAN 63 86 64 87 / 19 22 48 19 VICKSBURG 63 86 63 87 / 35 15 43 16 HATTIESBURG 69 87 69 89 / 19 24 29 26 NATCHEZ 68 87 69 86 / 24 15 30 20 GREENVILLE 55 84 59 87 / 22 15 26 9 GREENWOOD 55 84 57 87 / 21 15 26 9 && .JAN WATCHES/WARNINGS/ADVISORIES... MS...NONE. LA...NONE. AR...NONE. &&
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE JACKSON MS 959 PM CDT MON SEP 26 2011 ARZ074-075-LAZ007>009-015-016-023>026-MSZ034-035-040>043-047>049- 053-054-059>062-280300- ASHLEY-CHICOT-MOREHOUSE-WEST CARROLL-EAST CARROLL-RICHLAND- MADISON LA-FRANKLIN LA-CATAHOULA-TENSAS-CONCORDIA-WASHINGTON- HUMPHREYS-ISSAQUENA-SHARKEY-YAZOO-MADISON MS-WARREN-HINDS-RANKIN- CLAIBORNE-COPIAH-JEFFERSON-ADAMS-FRANKLIN MS-LINCOLN- 959 PM CDT MON SEP 26 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST LOUISIANA...SOUTHEAST ARKANSAS AND SOUTHWEST MISSISSIPPI. .DAY ONE...TONIGHT AND TUESDAY A FEW SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZED HAIL...ALONG WITH LOCALLY HEAVY RAINFALL...WILL BE POSSIBLE AFTER MIDNIGHT FOR AREAS GENERALLY WEST OF THE INTERSTATE 55 CORRIDOR. A STALLED FRONT ALONG HIGHWAY 84 WILL HELP FOCUS NEW STORMS FROM THE WEST BETWEEN 3 AND 6 AM AND THESE WILL PERSIST INTO TUESDAY MORNING. LOCALLY HEAVY RAINS OF 2 INCHES ARE POSSIBLE WHERE STORMS MOVE REPEATEDLY OVER ONE LOCATION. THESE STORMS SHOULD BUILD TOWARD THE SOUTHEAST ALONG THE FRONT DURING THE BALANCE OF THE DAYLIGHT HOURS BEFORE WEAKENING. .DAYS TWO THROUGH SEVEN...TUESDAY NIGHT THROUGH SUNDAY 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 LATE TONIGHT INTO TUESDAY MORNING. MSZ018-019-025>033-036>039-044>046-050>052-055>058-063>066- 072>074-280300- BOLIVAR-SUNFLOWER-LEFLORE-GRENADA-CARROLL-MONTGOMERY-WEBSTER-CLAY- LOWNDES-CHOCTAW-OKTIBBEHA-HOLMES-ATTALA-WINSTON-NOXUBEE-LEAKE- NESHOBA-KEMPER-SCOTT-NEWTON-LAUDERDALE-SIMPSON-SMITH-JASPER- CLARKE-LAWRENCE-JEFFERSON DAVIS-COVINGTON-JONES-MARION-LAMAR- FORREST- 959 PM CDT MON SEP 26 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTH AND MAINLY EASTERN MISSISSIPPI. .DAY ONE...TONIGHT AND TUESDAY THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW. .DAYS TWO THROUGH SEVEN...TUESDAY NIGHT THROUGH SUNDAY 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...SHOULD NOT BE NEEDED THROUGH SUNDAY. FOR MORE INFORMATION PLEASE VISIT OUR WEBSITE AT WWW.SRH.NOAA.GOV/JAN. 40
ARZ074-270805-
ASHLEY AR-
233 AM CDT TUE SEP 27 2011
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
233 AM CDT TUE SEP 27 2011
A STRONG THUNDERSTORM CAPABLE OF PRODUCING PENNY TO NICKEL SIZE HAIL
WAS LOCATED 4 MILES SOUTHEAST OF HAMBURG AT 233 AM CDT...MOVING EAST
AT 25 MPH.
DANGEROUS CLOUD TO GROUND LIGHTNING IS ALSO POSSIBLE WITH THIS STORM.
PEOPLE IN CENTRAL ASHLEY COUNTY SHOULD MONITOR THIS STORM CLOSELY.
LAT...LON 3328 9180 3329 9146 3308 9146 3307 9146
3310 9181
TIME...MOT...LOC 0733Z 273DEG 23KT 3319 9170
CMEMSZ019-025-270805- SUNFLOWER MS-LEFLORE MS- 233 AM CDT TUE SEP 27 2011 SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE JACKSON MS 233 AM CDT TUE SEP 27 2011 A STRONG THUNDERSTORM CAPABLE OF PRODUCING PENNY TO NICKEL SIZE HAIL WAS LOCATED 6 MILES NORTHWEST OF SUNFLOWER AT 233 AM CDT...MOVING EAST AT 30 MPH. VERY HEAVY RAIN IS ALSO POSSIBLE WITH THIS STORM. PEOPLE IN WEST CENTRAL LEFLORE AND CENTRAL SUNFLOWER COUNTIES SHOULD MONITOR THIS STORM CLOSELY. LAT...LON 3367 9032 3347 9033 3350 9067 3369 9065 TIME...MOT...LOC 0733Z 273DEG 33KT 3358 9057 MRM
ARZ075-MSZ034-040-270825- CHICOT AR-WASHINGTON MS-ISSAQUENA MS- 253 AM CDT TUE SEP 27 2011 SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE JACKSON MS 253 AM CDT TUE SEP 27 2011 A STRONG THUNDERSTORM CAPABLE OF PRODUCING PENNY TO NICKEL SIZE HAIL WAS LOCATED 8 MILES NORTHWEST OF GLEN ALLAN AT 253 AM CDT...MOVING EAST AT 30 MPH. VERY HEAVY RAIN IS ALSO POSSIBLE WITH THIS STORM. PEOPLE IN EXTREME NORTHWESTERN ISSAQUENA...SOUTHWESTERN WASHINGTON AND SOUTHEASTERN CHICOT COUNTIES SHOULD MONITOR THIS STORM CLOSELY. LAT...LON 3320 9091 3301 9092 3301 9123 3319 9122 TIME...MOT...LOC 0753Z 272DEG 25KT 3309 9112 MRM
MSZ019-025-035-036-270850- SUNFLOWER MS-LEFLORE MS-HUMPHREYS MS-HOLMES MS- 320 AM CDT TUE SEP 27 2011 SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE JACKSON MS 320 AM CDT TUE SEP 27 2011 A STRONG THUNDERSTORM CAPABLE OF PRODUCING PENNY TO NICKEL SIZE HAIL WAS LOCATED OVER BELZONI AT 320 AM CDT...MOVING EAST AT 30 MPH. VERY HEAVY RAIN IS ALSO POSSIBLE WITH THIS STORM. PEOPLE IN NORTHWESTERN HOLMES...NORTHERN HUMPHREYS...EXTREME SOUTHWESTERN LEFLORE AND EXTREME SOUTH CENTRAL SUNFLOWER COUNTIES SHOULD MONITOR THIS STORM CLOSELY. LAT...LON 3331 9028 3308 9026 3309 9061 3327 9061 TIME...MOT...LOC 0820Z 269DEG 27KT 3318 9050 MRM
MSZ036-270910- HOLMES MS- 341 AM CDT TUE SEP 27 2011 SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE JACKSON MS 341 AM CDT TUE SEP 27 2011 A STRONG THUNDERSTORM CAPABLE OF PRODUCING PENNY TO NICKEL SIZE HAIL WAS LOCATED OVER TCHULA AT 342 AM CDT...MOVING EAST AT 30 MPH. VERY HEAVY RAIN IS ALSO POSSIBLE WITH THIS STORM. PEOPLE IN CENTRAL HOLMES COUNTY SHOULD MONITOR THIS STORM CLOSELY. LAT...LON 3328 9000 3306 9001 3309 9033 3327 9032 TIME...MOT...LOC 0842Z 272DEG 27KT 3318 9021 MRM
LAZ007-008-270915- MOREHOUSE LA-WEST CARROLL LA- 345 AM CDT TUE SEP 27 2011 SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE JACKSON MS 345 AM CDT TUE SEP 27 2011 A STRONG THUNDERSTORM CAPABLE OF PRODUCING PENNY TO NICKEL SIZE HAIL WAS LOCATED 3 MILES NORTH OF GALION AT 345 AM CDT...MOVING EAST AT 30 MPH. VERY HEAVY RAIN IS ALSO POSSIBLE WITH THIS STORM. PEOPLE IN NORTHWESTERN WEST CARROLL AND NORTHEASTERN MOREHOUSE PARISHES SHOULD MONITOR THIS STORM CLOSELY. LAT...LON 3300 9143 3277 9147 3281 9183 3299 9183 TIME...MOT...LOC 0845Z 277DEG 33KT 3289 9172 MRM
The Jackson/Brandon,MS radar (KDGX), 174 km away, was scanning. The volume nearest the first event began at 08:46 UTC.
1 flash flood, 1 hail. Local standard time, as filed.
Several roads were under water across southeast Ashley County. Radar estimated 4 to 6 inches of rain fell across this area.
Quarter size hail fell in Eudora.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Arkansas in 2011Every state in 2011This day in weather historyWarnings in Arkansas, September 2011
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: 339809, 339814.