Alert archive / Mississippi / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 271, NWS Jackson, MS

April 26, 2011Forrest County, Lamar County, Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at Apr 26, 2011, 8:05 AM CDT for Forrest County, Lamar County, Mississippi. It was in force for 40 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Apr 26, 2011, 8:05 AM CDT (13:05 UTC)
Expired: Apr 26, 2011, 8:45 AM CDT
In force: 40 min
Issued by: NWS Jackson, MS
Area: Storm-based polygon

Counties Forrest County, MS, Lamar County, MS

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 1.1 hours before the alert went out and 91 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 2833 J/kg
Mixed-layer CIN: -1 J/kg
Mixed-layer LCL: 528 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 180 m²/s²
0-3 km storm-relative helicity: 243 m²/s²
Significant tornado parameter: 2.5
Supercell composite: 12.2

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

810 
WUUS54 KJAN 261305
SVRJAN
MSC035-073-261345-
/O.NEW.KJAN.SV.W.0271.110426T1305Z-110426T1345Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE JACKSON MS
805 AM CDT TUE APR 26 2011

THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN FORREST COUNTY IN SOUTHEAST MISSISSIPPI...
  SOUTHEASTERN LAMAR COUNTY IN SOUTHEAST MISSISSIPPI...

* UNTIL 845 AM CDT

* AT 806 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
  OF 60 MPH.  THIS STORM WAS LOCATED NEAR LUMBERTON MOVING NORTHEAST
  AT 35 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  PURVIS...ROCK HILL...MAXIE...BROOKLYN AND MCLAURIN

PRECAUTIONARY/PREPAREDNESS ACTIONS...

WINDS OF 60 MPH CAN BRING DOWN TREES...POSSIBLY RESULTING IN INJURY
AND PROPERTY DAMAGE. ROOFS OF MOBILE HOMES AND OUTBUILDINGS COULD BE
DAMAGED...AND MINOR ROOF DAMAGE TO WELL BUILT HOMES AND STRUCTURES
COULD OCCUR.

SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES. WHILE NOT IMMEDIATELY
LIKELY...A TORNADO MAY STILL DEVELOP. IF A TORNADO IS SPOTTED...ACT
QUICKLY AND MOVE TO A PLACE OF SAFETY IN A STURDY STRUCTURE...SUCH AS
A BASEMENT OR SMALL INTERIOR ROOM.

&&

LAT...LON 3101 8935 3101 8941 3099 8943 3099 8946
      3102 8951 3102 8954 3100 8955 3100 8959
      3103 8961 3132 8913 3102 8914 3100 8913
      3091 8914 3091 8933
TIME...MOT...LOC 1306Z 242DEG 28KT 3099 8945

$$

BK

2 follow-up statements

859 
WWUS54 KJAN 261327
SVSJAN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
827 AM CDT TUE APR 26 2011

MSC073-261337-
/O.CAN.KJAN.SV.W.0271.000000T0000Z-110426T1345Z/
LAMAR MS-
827 AM CDT TUE APR 26 2011

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN LAMAR COUNTY IS
CANCELLED...

LAT...LON 3098 8934 3100 8934 3101 8935 3102 8934
      3119 8935 3132 8913 3102 8914 3100 8913
      3091 8914 3091 8933
TIME...MOT...LOC 1327Z 242DEG 28KT 3103 8926

$$

MSC035-261345-
/O.CON.KJAN.SV.W.0271.000000T0000Z-110426T1345Z/
FORREST MS-
827 AM CDT TUE APR 26 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 845 AM CDT
FOR SOUTHERN FORREST COUNTY...

AT 827 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE TRACKING
A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
OF 60 MPH.  THIS STORM WAS LOCATED NEAR ROCK HILL MOVING NORTHEAST AT
30 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
MAXIE...BROOKLYN AND MCLAURIN

PRECAUTIONARY/PREPAREDNESS ACTIONS...

WINDS OF 60 MPH CAN BRING DOWN TREES...POSSIBLY RESULTING IN INJURY
AND PROPERTY DAMAGE. ROOFS OF MOBILE HOMES AND OUTBUILDINGS COULD BE
DAMAGED...AND MINOR ROOF DAMAGE TO WELL BUILT HOMES AND STRUCTURES
COULD OCCUR.

SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES. WHILE NOT IMMEDIATELY
LIKELY...A TORNADO MAY STILL DEVELOP. IF A TORNADO IS SPOTTED...ACT
QUICKLY AND MOVE TO A PLACE OF SAFETY IN A STURDY STRUCTURE...SUCH AS
A SMALL INTERIOR ROOM.

&&

LAT...LON 3098 8934 3100 8934 3101 8935 3102 8934
      3119 8935 3132 8913 3102 8914 3100 8913
      3091 8914 3091 8933
TIME...MOT...LOC 1327Z 242DEG 28KT 3103 8926

$$

BK

978 
WWUS54 KJAN 261347
SVSJAN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
847 AM CDT TUE APR 26 2011

MSC035-261357-
/O.EXP.KJAN.SV.W.0271.000000T0000Z-110426T1345Z/
FORREST MS-
847 AM CDT TUE APR 26 2011

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN FORREST COUNTY HAS
EXPIRED...

LAT...LON 3098 8934 3100 8934 3101 8935 3102 8934
      3119 8935 3132 8913 3102 8914 3100 8913
      3091 8914 3091 8933
TIME...MOT...LOC 1327Z 242DEG 28KT 3098 8923

$$

BK

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, 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 this severe thunderstorm warning went out at Apr 26, 4:36 AM CDT, 3 hours 29 minutes earlier.

Area forecast discussion, Apr 26, 4:36 AM CDT, 3 hours 29 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE JACKSON MS
436 AM CDT TUE APR 26 2011

.SHORT TERM...OUTFLOW FROM STORMS EARLIER THIS MORNING WILL SERVE AS
A FOCUS FOR CONVECTION TODAY IN AN AIR MASS THAT WILL SEE CAPE
VALUES EXCEED 2000 OVER MUCH OF THE AREA PER THE MORE CONSERVATIVE
MODEL FORECASTS WITH MUCH HIGHER VALUES PAINTED ON OTHERS. HAVE
INCREASED POPS OVER CENTRAL AND SRN AREAS S OF I-20 AS BAND OF
CONVECTION TRACKS ACROSS SRN MS THIS MORNING. LOW LEVEL JET/WIND
SHEAR FIELDS WILL DECREASE THIS MORNING IN THE WAKE OF THE WAVE THAT
LIFTED OUT BEFORE SUNRISE... ALTHOUGH DEEP LAYER SHEAR WILL REMAIN
HIGH ENOUGH TO SUPPORT STRONG TO SEVERE CONVECTION. OTHER THAN
AFTERNOON HEATING AND THE OUTFLOW LEFT BY LAST NIGHTS LINE OF
STORMS...LITTLE IS EXPECTED IN THE WAY OF LARGE SCALE FORCING
THROUGH THE EARLY AFTERNOON. HOWEVER...THIS WILL BE SUFFICIENT TO
MAINTAIN A RISK OF AT LEAST ISOLATED SEVERE STORMS TODAY IN THE FACE
OF DECREASING CIN VALUES IN AN UNSTABLE AIR MASS WITH HEALTHY DEEP
LAYER SHEAR. THE PRIMARY RISK THROUGH EARLY AFTERNOON LOOKS TO BE
THE CHANCE OF DAMAGING WIND OR HAIL IN A WINDOW WITH LOWER LOW LEVEL
SHEAR. HOWEVER WIND FIELDS/SHEAR WILL BE ON THE INCREASE AGAIN LATER
IN THE DAY AHEAD OF A STRONGER SYSTEM DIGGING INTO THE SRN PLAINS.

LOW LEVEL CYCLOGENESIS INCREASES TODAY WHEN A SURFACE WAVE DEEPENS
OVER WRN ZONES THIS AFTERNOON AND EVENING. THE LOW LEVEL JET
INTENSIFIES SIGNIFICANTLY THIS EVENING AS THE 850 LOW DIGS ACROSS
THE SRN PLAINS. MODEL CONSENSUS PERSISTS IN 850 MB FLOW EXCEEDING
60S KTS TONIGHT WITH 0-1KM HELICITY VALUES GENERALLY ABOVE 300 BY
MIDNIGHT AND INCREASING EVEN MORE INTO EARLY EARLY WEDNESDAY. AS
OFTEN OCCURS WITH DEEP TROUGHS APPROACHING THE AREA...WARMER MID
LEVEL AIR WILL BE PUSHED INTO THE REGION IN THE WARM SECTOR AHEAD OF
THE FRONT AND CIN VALUES ARE FORECAST TO INCREASE ACCORDINGLY
TONIGHT. MODELS AGREE THAT 700 MB TEMPS WILL WARM TO 10 DEGS ACROSS
SRN/ERN ZONES BY MIDNIGHT TONIGHT...LEAVING THE BEST ENVIRONMENT FOR
DEEP CONVECTION ACROSS WRN INTO CNTRL AND NRN AREAS. MID LEVEL TEMPS
BEGIN TO COOL BEFORE SUNRISE IN THE FACE OF FALLING HEIGHTS AND THE
DIGGING TROUGH...INCREASING THE RISK OF SEVERE CONVECTION ACROSS ALL
OF THE REGION FOR WEDNESDAY. AN INTENSE COLD FRONT WILL TRACK ACROSS
THE FORECAST AREA WEDNESDAY WHILE A DEEPENING SURFACE LOW TRACKS TO
OUR NW. THIS WILL PROVIDE STRONG FORCING ACROSS OUR AREA...WHICH
WILL REMAIN VERY UNSTABLE WITH DEEP AND INTENSE WIND SHEAR AND
LITTLE OR NO CAPPING FORECAST. UPPER DIVERGENCE...WHICH WILL BE ON
THE INCREASE ACROSS NRN ZONES TONIGHT...IS FORECAST TO INCREASE
WIDESPREAD ACROSS THE AREA DURING THE DAY WEDNESDAY TO PROVIDE GOOD
UPPER SUPPORT TO WIDESPREAD CONVECTION.

PERIODS OF HEAVY RAIN WILL OCCUR WITH THIS SYSTEM...ESPECIALLY
TONIGHT AND WEDNESDAY. THE NAM HITS PRECIP WATER HARD WITH AROUND 2
INCHES FORECAST ACROSS NWRN ZONES TONIGHT...AROUND 1.7 IS FORECAST
BY THE GFS BY 12Z WEDNESDAY. A SWATH OF AROUND 1.8 INCHES MOVES
ACROSS THE FA PER GFS/NAM DURING THE DAY WEDNESDAY. WILL ISSUE A
FLASH FLOOD WATCH FOR NWRN ZONES FOR LATE AFTERNOON INTO WEDNESDAY
AFTERNOON. INCREASED POPS SLIGHTLY FOR SRN AREAS FOR TODAY...NWRN
ZONES FOR TONIGHT AND ACROSS ALL OF THE FORECAST AREA FOR WEDNESDAY.

RAIN CHANCES WILL END FROM THE WEST WEDNESDAY EVENING IN THE WAKE OF
THE COLD FRONT.

A WAKE LOW FEATURE THAT HAS DEVELOPED ALONG THE NRN EDGE OF THE BAND
OF STORMS TRACKING ACROSS SRN MS THIS MORNING WILL PRODUCE A SWATH
OF STRONG WIND ACROSS CENTRAL ZONES THIS MORNING.

.LONG TERM...THURSDAY THROUGH NEXT TUESDAY...QUIETER CONDITIONS WILL
EXIST THURSDAY THROUGH AT LEAST SATURDAY AS HIGH PRESSURE BUILDS
INTO THE LOWER MISSISSIPPI RIVER VALLEY AND REMAINS IN PLACE INTO
THE FIRST HALF OF THE WEEKEND.  SLIGHTLY COOLER DRIER AIR WILL BE IN
PLACE THURSDAY RESULTING IN COOLER TEMPERATURES...BUT HEADING INTO
THE WEEKEND TEMPERATURES WILL BEGIN MODERATING UP AS WINDS AT THE
SURFACE BECOME MORE SOUTHERLY AND MID AND UPPER FLOW BECOMES
WESTERLY AS AN UPPER RIDGE BUILDS ACROSS THE REGION.

ONCE AGAIN THIS IS ABOUT THE EXTENT OF THE AGREEMENT BETWEEN THE
MODELS THROUGH THE LONG TERM PORTION OF THE FORECAST.  BOTH THE GFS
AND ECMWF BRING ANOTHER SYSTEM INTO THE CWA...BUT THERE REMAINS SOME
TIMING DIFFERENCES AS WELL AS DIFFERENCES IN EACH MODELS OVERALL
HANDLING OF THE SYSTEM.  THE GFS BRINGS A FRONT INTO THE FORECAST
AREA EARLY SUNDAY AND BASICALLY HANGS IT UP ACROSS THE FORECAST AREA
THROUGH TUESDAY...THUS KEEPING RAIN CHANCES ACROSS THE CWA DURING
THE EXTENDED.  MEANWHILE...THE ECMWF BRINGS THE FRONT INTO THE
FORECAST AREA LATE SUNDAY AND PUSHES IT THROUGH ON MONDAY.  GIVEN
THIS IS STILL SEVERAL DAYS OUT...I'LL STAY PRETTY CLOSE TO MEX
GUIDANCE DURING THE EXTENDED. /19/

&&

.AVIATION...GUSTY SOUTH WINDS WILL CONTINUE ACROSS THE AREA. A WAKE
LOW FEATURE THAT HAS DEVELOPED WILL PROVIDE LOCALLY HIGHER WIND
GUSTS ACROSS CENTRAL ZONES THIS MORNING. TSTMS WILL BE SCT OVER THE
AREA THROUGH THE AFTERNOON. MVFR BKN-OVC DECKS WILL BE WIDESPREAD
THIS MORNING...BECOMING SCT-BKN 2500-4000 THIS AFTERNOON.

&&

.PRELIMINARY POINT TEMPS/POPS...
JACKSON       86  71  84  52 /  46  45  61  13
MERIDIAN      87  69  89  49 /  53  35  62  40
VICKSBURG     87  72  84  51 /  29  50  55  13
HATTIESBURG   88  73  90  57 /  51  22  44  27
NATCHEZ       87  73  84  54 /  22  29  45  13
GREENVILLE    85  72  81  50 /  50  80  59  13
GREENWOOD     86  73  82  49 /  45  76  69  19

&&

.JAN WATCHES/WARNINGS/ADVISORIES...
MS...FLASH FLOOD WATCH FROM 4 PM CDT THIS AFTERNOON THROUGH
     WEDNESDAY AFTERNOON FOR MSZ018-019-025>027-034.

LA...NONE.
AR...FLASH FLOOD WATCH FROM 4 PM CDT THIS AFTERNOON THROUGH
     WEDNESDAY AFTERNOON FOR ARZ074-075.

&&

03/19

Hazardous weather outlook, Apr 26, 6:12 AM CDT, 1 hour 53 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE JACKSON MS
612 AM CDT TUE APR 26 2011

ARZ074-075-LAZ007>009-015-016-023-025-MSZ018-019-025>042-047-
271115-
ASHLEY-CHICOT-MOREHOUSE-WEST CARROLL-EAST CARROLL-RICHLAND-
MADISON LA-FRANKLIN LA-TENSAS-BOLIVAR-SUNFLOWER-LEFLORE-GRENADA-
CARROLL-MONTGOMERY-WEBSTER-CLAY-LOWNDES-CHOCTAW-OKTIBBEHA-
WASHINGTON-HUMPHREYS-HOLMES-ATTALA-WINSTON-NOXUBEE-ISSAQUENA-
SHARKEY-YAZOO-WARREN-
612 AM CDT TUE APR 26 2011

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL MISSISSIPPI AND
EXTREME SOUTHEAST ARKANSAS.

.DAY ONE...TODAY AND TONIGHT

THERE WILL BE A CHANCE OF STRONG TO SEVERE THUNDERSTORMS THIS
AFTERNOON...THE PRIMARY SEVERE RISKS BEING DAMAGING WIND TO 60 MPH
AND LARGE HAIL TO THE SIZE OF QUARTERS. THE RISK OF SEVERE STORMS
WILL INCREASE THIS EVENING. THUNDERSTORMS THAT DEVELOP TONIGHT WILL
HAVE THE POTENTIAL FOR TORNADOES...DAMAGING WINDS TO 80 MPH AND
GOLFBALL SIZE HAIL OR LARGER.

PERIODS OF HEAVY RAINFALL WILL OCCUR WITH THUNDERSTORMS THIS EVENING
AND OVERNIGHT. PONDING WATER CAN BE EXPECTED ACROSS ROADWAYS AND IN
LOW LYING AREAS. LOCAL FLOODING WILL BE POSSIBLE...ESPECIALLY WHERE
STORMS TRACK REPEATEDLY OVER THE SAME AREAS. THE FLOODING RISK IS
MAINLY FOR NEAR THE HIGHWAY 82 CORRIDOR.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

THUNDERSTORMS WEDNESDAY WILL HAVE THE POTENTIAL FOR TORNADOES...
DAMAGING WINDS TO 80 MPH AND GOLFBALL SIZE HAIL OR LARGER. THE MOST
INTENSE STORMS WILL HAVE THE POTENTIAL FOR STRONG TORNADOES.

PERIODS OF HEAVY RAINFALL WILL OCCUR WITH THUNDERSTORMS. PONDING
WATER CAN BE EXPECTED ACROSS ROADWAYS AND IN LOW LYING AREAS. LOCAL
FLOODING WILL BE POSSIBLE...ESPECIALLY WHERE STORMS TRACK REPEATEDLY
OVER THE SAME AREAS.

.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 TODAY AND IS LIKELY TONIGHT AND
WEDNESDAY.

LAZ024-026-MSZ053>055-059>063-271115-
CATAHOULA-CONCORDIA-CLAIBORNE-COPIAH-SIMPSON-JEFFERSON-ADAMS-
FRANKLIN MS-LINCOLN-LAWRENCE-
612 AM CDT TUE APR 26 2011

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL MISSISSIPPI...
NORTHEAST LOUISIANA...AND EXTREME SOUTHEAST ARKANSAS.

.DAY ONE...TODAY AND TONIGHT

THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW TODAY. THE
RISK OF SEVERE STORMS WILL INCREASE THIS EVENING. THUNDERSTORMS THAT
DEVELOP TONIGHT WILL HAVE THE POTENTIAL FOR TORNADOES...DAMAGING
WINDS TO 80 MPH AND GOLFBALL SIZE HAIL OR LARGER.

PERIODS OF HEAVY RAINFALL WILL BE POSSIBLE WITH THUNDERSTORMS
TONIGHT. PONDING WATER WILL BE POSSIBLE ACROSS ROADWAYS AND IN LOW
LYING AREAS.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

THUNDERSTORMS WEDNESDAY WILL HAVE THE POTENTIAL FOR TORNADOES...
DAMAGING WINDS TO 80 MPH AND GOLFBALL SIZE HAIL OR LARGER. THE MOST
INTENSE STORMS WILL HAVE THE POTENTIAL FOR STRONG TORNADOES.

PERIODS OF HEAVY RAINFALL WILL OCCUR WITH THUNDERSTORMS. PONDING
WATER CAN BE EXPECTED ACROSS ROADWAYS AND IN LOW LYING AREAS. LOCAL
FLOODING WILL BE POSSIBLE...ESPECIALLY WHERE STORMS TRACK REPEATEDLY
OVER THE SAME AREAS.

.SPOTTER CALL TO ACTION STATEMENT...
THE ACTIVATION OF STORM SPOTTERS...HAM RADIO OPERATORS...AND
EMERGENCY MANAGEMENT PERSONNEL IN SUPPORT OF SEVERE WEATHER
OPERATIONS IS LIKELY TONIGHT AND WEDNESDAY.

MSZ056>058-064>066-072>074-271115-
SMITH-JASPER-CLARKE-JEFFERSON DAVIS-COVINGTON-JONES-MARION-LAMAR-
FORREST-
612 AM CDT TUE APR 26 2011

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL MISSISSIPPI...
NORTHEAST LOUISIANA...AND EXTREME SOUTHEAST ARKANSAS.

.DAY ONE...TODAY AND TONIGHT

THERE WILL BE A CHANCE OF STRONG TO SEVERE THUNDERSTORMS THIS
MORNING...THE PRIMARY SEVERE RISKS BEING DAMAGING WIND TO 60 MPH OR
LARGE HAIL TO THE SIZE OF QUARTERS. THE RISK FOR SEVERE STORMS WILL
END BY LATE MORNING AS THE LINE OF STORMS EXITS THE AREA. THE RISK
OF SEVERE STORMS WILL INCREASE AGAIN TONIGHT. THUNDERSTORMS THAT
DEVELOP TONIGHT WILL HAVE THE POTENTIAL FOR TORNADOES...DAMAGING
WINDS TO 70 MPH AND GOLFBALL SIZE HAIL.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

THUNDERSTORMS WEDNESDAY WILL HAVE THE POTENTIAL FOR TORNADOES...
DAMAGING WINDS TO 80 MPH AND GOLFBALL SIZE HAIL OR LARGER. THE MOST
INTENSE STORMS WILL HAVE THE POTENTIAL FOR STRONG TORNADOES.

PERIODS OF HEAVY RAINFALL WILL OCCUR WITH THUNDERSTORMS. PONDING
WATER WILL BE POSSIBLE ACROSS ROADWAYS AND IN LOW LYING AREAS.

.SPOTTER CALL TO ACTION STATEMENT...
THE ACTIVATION OF STORM SPOTTERS...HAM RADIO OPERATORS...AND
EMERGENCY MANAGEMENT PERSONNEL IN SUPPORT OF SEVERE WEATHER
OPERATIONS IS LIKELY FOR WEDNESDAY.

MSZ043>046-048>052-271115-
MADISON MS-LEAKE-NESHOBA-KEMPER-HINDS-RANKIN-SCOTT-NEWTON-
LAUDERDALE-
612 AM CDT TUE APR 26 2011

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL MISSISSIPPI...
NORTHEAST LOUISIANA...AND EXTREME SOUTHEAST ARKANSAS.

.DAY ONE...TODAY AND TONIGHT

GUSTY WINDS CAN BE EXPECTED ACROSS THE AREA THIS MORNING. WIND GUSTS
TO 50 MPH WILL BE POSSIBLE ALONG THE BACK EDGE OF A LINE OF SHOWERS
AND THUNDERSTORMS THAT WILL TRACK ACROSS THE AREA. THE PROBABILITY
FOR WIDESPREAD HAZARDOUS WEATHER IS LOW FOR THE LATE MORNING AND
AFTERNOON PERIOD...HOWEVER THE RISK OF SEVERE STORMS WILL INCREASE
THIS EVENING. THUNDERSTORMS THAT DEVELOP TONIGHT WILL HAVE THE
POTENTIAL FOR TORNADOES...DAMAGING WINDS TO 80 MPH AND GOLFBALL SIZE
HAIL OR LARGER.

PERIODS OF HEAVY RAINFALL WILL OCCUR WITH THUNDERSTORMS OVERNIGHT.
PONDING WATER WILL BE POSSIBLE ACROSS ROADWAYS AND IN LOW LYING
AREAS.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

THUNDERSTORMS WEDNESDAY WILL HAVE THE POTENTIAL FOR TORNADOES...
DAMAGING WINDS TO 80 MPH AND GOLFBALL SIZE HAIL OR LARGER. THE MOST
INTENSE STORMS WILL HAVE THE POTENTIAL FOR STRONG TORNADOES.

PERIODS OF HEAVY RAINFALL WILL OCCUR WITH THUNDERSTORMS. PONDING
WATER CAN BE EXPECTED ACROSS ROADWAYS AND IN LOW LYING AREAS. LOCAL
FLOODING WILL BE POSSIBLE...ESPECIALLY WHERE STORMS TRACK REPEATEDLY
OVER THE SAME AREAS.

.SPOTTER CALL TO ACTION STATEMENT...
THE ACTIVATION OF STORM SPOTTERS...HAM RADIO OPERATORS...AND
EMERGENCY MANAGEMENT PERSONNEL IN SUPPORT OF SEVERE WEATHER
OPERATIONS IS LIKELY TONIGHT AND WEDNESDAY.

FOR MORE INFORMATION PLEASE VISIT OUR WEBSITE AT
WWW.SRH.NOAA.GOV/JAN.

03

In the hours before

Local storm report, Apr 26, 6:45 AM CDT, 1 hour 20 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON MS
645 AM CDT TUE APR 26 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0540 AM     NON-TSTM WND DMG 5 S PICKENS             32.82N 89.97W
04/26/2011                   MADISON            MS   EMERGENCY MNGR

            BARN DESTROYED AND MINOR DAMAGE TO THE ROOF OF A HOUSE ON
            OLD HIGHWAY 51.

&&

19

Local storm report, Apr 26, 7:17 AM CDT, 48 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON MS
717 AM CDT TUE APR 26 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0640 AM     TSTM WND DMG     COLLINS                 31.64N 89.56W
04/26/2011                   COVINGTON          MS   EMERGENCY MNGR

            SEVERAL OUTBUILDINGS DESTROYED ON KOLA ROAD

&&

JALLEN

Special weather statement, Apr 26, 7:19 AM CDT, 46 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
719 AM CDT TUE APR 26 2011

MSZ072>074-261250-
FORREST MS-LAMAR MS-MARION MS-
719 AM CDT TUE APR 26 2011

A LINE OF STRONG THUNDERSTORMS CAPABLE OF PRODUCING 40 TO 50 MPH
WINDS WAS LOCATED FROM 3 MILES SOUTHWEST OF EASTABUCHIE TO 7 MILES
SOUTHWEST OF BAXTERVILLE AT 719 AM CDT...MOVING EAST AT 20 MPH.

VERY HEAVY RAIN ALONG WITH CONTINUOUS CLOUD TO GROUND LIGHTNING ARE
ALSO POSSIBLE WITH THESE STORMS.

PEOPLE IN SOUTHEASTERN MARION...SOUTHEASTERN LAMAR AND FORREST
COUNTIES SHOULD MONITOR THESE STORMS CLOSELY.

LAT...LON 3101 8935 3101 8941 3099 8943 3102 8951
      3102 8954 3100 8955 3101 8977 3122 8955
      3144 8941 3143 8913 3091 8914 3091 8933
TIME...MOT...LOC 1219Z 273DEG 19KT 3141 8932 3121 8944
          3101 8966

BK

Special weather statement, Apr 26, 7:42 AM CDT, 23 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
742 AM CDT TUE APR 26 2011

MSZ038-045-261350-
NESHOBA MS-WINSTON MS-
742 AM CDT TUE APR 26 2011

...STRONG WINDS GUSTING TO 40 AND 50 MPH SHOULD PICK UP AS RAINS END
   FROM THE WEST THROUGH 900 AM

A LINE OF STRONG WINDS CAPABLE OF PRODUCING SPEEDS OF 40 TO 50 MPH
WINDS WAS LOCATED FROM 14 MILES WEST OF CENTER RIDGE TO 7 MILES
SOUTH OF DOWDVILLE AT 740 AM CDT...MOVING EAST AT 40 MPH.
THESE WINDS WERE RESULTING FROM A LOW LEVEL CORE OF HIGHER WINDS
PUSHIN INTO THE BACK EDGE OF THE RAIN SHIELD FROM THE SOUTHWEST.

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 WINSTON AND NESHOBA COUNTIES SHOULD MONITOR THESE STORMS
CLOSELY.

LAT...LON 3312 8917 3328 8905 3329 8883 3296 8883
      3294 8891 3259 8891 3258 8932 3308 8931
TIME...MOT...LOC 1236Z 270DEG 39KT 3308 8924 3258 8924

40

Special weather statement, Apr 26, 7:42 AM CDT, 23 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
742 AM CDT TUE APR 26 2011

MSZ046-261315-
KEMPER MS-
742 AM CDT TUE APR 26 2011

A STRONG THUNDERSTORM CAPABLE OF PRODUCING 40 TO 50 MPH WINDS WAS
LOCATED OVER DAMASCUS AT 743 AM CDT...MOVING NORTHEAST AT 35 MPH.

VERY HEAVY RAIN ALONG WITH CONTINUOUS CLOUD TO GROUND LIGHTNING ARE
ALSO POSSIBLE WITH THIS STORM.

PEOPLE IN KEMPER COUNTY SHOULD MONITOR THIS STORM CLOSELY.

LAT...LON 3258 8875 3258 8878 3270 8891 3293 8880
      3293 8849 3287 8835
TIME...MOT...LOC 1243Z 226DEG 31KT 3270 8875

BK

Local storm report, Apr 26, 7:44 AM CDT, 21 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON MS
744 AM CDT TUE APR 26 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0720 AM     TSTM WND DMG     1 NE LAUREL             31.70N 89.13W
04/26/2011                   JONES              MS   EMERGENCY MNGR

            SEVERAL TREES DOWN WEST OF WEST JONES HIGH SCHOOL.

&&

JALLEN

The office that day

Everything else NWS Jackson, MS issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 25, 9:12 PM CDT	Special Weather Statement	JAN	Bolivar, Leflore, Sunflower, Washington	68 min
Apr 25, 9:55 PM CDT	Severe Thunderstorm Warning	JAN	Bolivar	65 min
Apr 25, 10:52 PM CDT	Severe Thunderstorm Warning	JAN	Bolivar, Sunflower, Washington	53 min
Apr 25, 11:17 PM CDT	Flash Flood Warning	JAN	Bolivar, Issaquena, Washington	98 min
Apr 25, 11:39 PM CDT	Flash Flood Warning	JAN	Sunflower	108 min
Apr 25, 11:42 PM CDT	Severe Thunderstorm Warning	JAN	Bolivar, Leflore, Sunflower, Washington	48 min
Apr 26, 12:06 AM CDT	Severe Thunderstorm Warning	JAN	Carroll, Grenada, Leflore, Montgomery	54 min
Apr 26, 12:25 AM CDT	Flash Flood Warning	JAN	Carroll, Grenada, Leflore, Sunflower	92 min
Apr 26, 12:59 AM CDT	Special Weather Statement	JAN	Montgomery, Webster	31 min
Apr 26, 3:11 AM CDT	Special Weather Statement	JAN	Claiborne, Warren	74 min
Apr 26, 3:22 AM CDT	Special Weather Statement	JAN	Adams, Claiborne, Jefferson	38 min
Apr 26, 3:29 AM CDT	Tornado Warning	JAN	Bolivar	46 min
Apr 26, 4:04 AM CDT	Special Weather Statement	JAN	Adams, Claiborne, Franklin, Hinds, Jefferson, Warren	31 min
Apr 26, 4:12 AM CDT	Severe Thunderstorm Warning	JAN	Bolivar, Sunflower	33 min
Apr 26, 4:18 AM CDT	Severe Thunderstorm Warning	JAN	Adams, Claiborne, Copiah, Franklin, Jefferson, Lincoln	42 min
Apr 26, 5:13 AM CDT	Special Weather Statement	JAN	Lincoln	32 min
Apr 26, 5:42 AM CDT	Special Weather Statement	JAN	Jefferson Davis, Lawrence	58 min
Apr 26, 5:59 AM CDT	Severe Thunderstorm Warning	JAN	Covington, Jefferson Davis, Lawrence, Simpson	46 min
Apr 26, 6:10 AM CDT	High Wind Warning	JAN	Attala, Hinds, Leake, Madison, Rankin, Scott	110 min
Apr 26, 6:13 AM CDT	Tornado Warning	JAN	Covington, Jefferson Davis, Lawrence, Simpson, Smith	47 min
Apr 26, 6:19 AM CDT	Severe Thunderstorm Warning	JAN	Simpson, Smith	41 min
Apr 26, 6:33 AM CDT	Severe Thunderstorm Warning	JAN	Covington, Jefferson Davis, Jones	42 min
Apr 26, 7:01 AM CDT	Severe Thunderstorm Warning	JAN	Jasper, Jones, Smith	44 min
Apr 26, 7:07 AM CDT	Severe Thunderstorm Warning	JAN	Jasper, Newton	38 min
Apr 26, 7:13 AM CDT	Severe Thunderstorm Warning	JAN	Jones	62 min
Apr 26, 7:19 AM CDT	Special Weather Statement	JAN	Forrest, Lamar	31 min
Apr 26, 7:36 AM CDT	Flash Flood Watch	JAN	Attala, Bolivar, Carroll, Choctaw, Clay, Grenada and 19 more	32 hr
Apr 26, 7:37 AM CDT	Severe Thunderstorm Warning	JAN	Clarke, Jasper, Lauderdale, Newton	53 min
Apr 26, 7:42 AM CDT	Special Weather Statement	JAN	Kemper	33 min
Apr 26, 8:27 AM CDT	Special Weather Statement	JAN	Clay, Lowndes, Oktibbeha	73 min
Apr 26, 8:29 AM CDT	Severe Thunderstorm Warning	JAN	Clarke	31 min
Apr 26, 8:30 AM CDT	Special Weather Statement	JAN	Noxubee	30 min
Apr 26, 11:49 AM CDT	River Flood Warning	JAN	Carroll, Leflore	48 hr
Apr 26, 11:49 AM CDT	River Flood Warning	JAN	Sunflower	5 days
Apr 26, 1:48 PM CDT	Wind Advisory	JAN	Adams, Attala, Bolivar, Carroll, Choctaw, Claiborne and 41 more	29 hr
Apr 26, 6:20 PM CDT	Tornado Warning	JAN	Bolivar	37 min

Nearby

Severe Thunderstorm Warnings in Mississippi, 2011 Every severe thunderstorm warning in 2011

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive.