Alert archive / Mississippi / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 187, NWS Memphis, TN

April 20, 2011Alcorn County, Prentiss County, Tishomingo County, Mississippi

NWS Memphis, TN issued this severe thunderstorm warning at Apr 20, 2011, 4:22 PM CDT for Alcorn County, Prentiss County, Tishomingo County, Mississippi. It was in force for 53 min. 2 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Apr 20, 2011, 4:22 PM CDT (21:22 UTC)
Expired: Apr 20, 2011, 5:15 PM CDT
In force: 53 min
Issued by: NWS Memphis, TN
Area: Storm-based polygon

Counties Alcorn County, MS, Prentiss County, MS, Tishomingo County, MS

What was reported inside it

Time	Report	Where	Remark
Apr 20, 4:48 PM CDT	HAIL 0.75	Iuka, MS
Apr 20, 4:50 PM CDT	HAIL 0.88	Iuka, MS

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Apr 20, 1:02 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Little Rock, AR (KLZK), launched 12:00Z, 9.4 hours before the alert went out and 158 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 779 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 174 m²/s²
0-3 km storm-relative helicity: 218 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.8

Open this sounding in Storm Lab

The text

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

992 
WUUS54 KMEG 202122
SVRMEG
MSC003-117-141-202215-
/O.NEW.KMEG.SV.W.0187.110420T2122Z-110420T2215Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MEMPHIS TN
422 PM CDT WED APR 20 2011

THE NATIONAL WEATHER SERVICE IN MEMPHIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN ALCORN COUNTY IN NORTHEAST MISSISSIPPI...
  NORTHEASTERN PRENTISS COUNTY IN NORTHEAST MISSISSIPPI...
  CENTRAL TISHOMINGO COUNTY IN NORTHEAST MISSISSIPPI...

* UNTIL 515 PM CDT

* AT 423 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM PRODUCING QUARTER SIZE HAIL.  THIS STORM WAS
  LOCATED 6 MILES SOUTH OF LEEDY...OR 10 MILES EAST OF BOONEVILLE...
  AND MOVING EAST AT 35 MPH.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO IUKA AND
  JCOLEMAN STATE PARK.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

.STAY TUNED TO THIS BROADCAST FOR THE LATEST UPDATES AND INFORMATION.
TO REPORT SEVERE WEATHER ONLY...CALL 1 800 4 3 2 0 8 7 5.

&&

LAT...LON 3466 8812 3463 8846 3476 8846 3496 8816
      3492 8813 3490 8809
TIME...MOT...LOC 2123Z 253DEG 29KT 3473 8837

$$


TLSJR

1 follow-up statement

228 
WWUS54 KMEG 202137
SVSMEG

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MEMPHIS TN
437 PM CDT WED APR 20 2011

MSC003-117-202147-
/O.CAN.KMEG.SV.W.0187.000000T0000Z-110420T2215Z/
ALCORN MS-PRENTISS MS-
437 PM CDT WED APR 20 2011

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN PRENTISS AND
SOUTHEASTERN ALCORN COUNTIES IS CANCELLED...

AT 437 PM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED THAT THE 
THUNDERSTORMS WHICH PROMPTED THE WARNING HAVE MOVED OUT OF THE AREA 
AND NO LONGER POSE AN IMMEDIATE THREAT TO LIFE OR PROPERTY. 
THEREFORE...THE SEVERE THUNDERSTORM WARNING IS CANCELLED.

LAT...LON 3466 8812 3472 8832 3474 8832 3476 8834
      3483 8832 3496 8816 3492 8813 3490 8809
TIME...MOT...LOC 2137Z 253DEG 29KT 3476 8824

$$

MSC141-202215-
/O.CON.KMEG.SV.W.0187.000000T0000Z-110420T2215Z/
TISHOMINGO MS-
437 PM CDT WED APR 20 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 515 PM CDT
FOR CENTRAL TISHOMINGO COUNTY...

AT 437 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM PRODUCING QUARTER SIZE HAIL.  THIS
STORM WAS LOCATED NEAR HOLCUT...OR 6 MILES SOUTHWEST OF IUKA...MOVING
EAST AT 35 MPH.

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO IUKA...
EASTPORT...BACON SPRINGS...WALKER SIDING...HAZARD SWITCH...BLYTHE
CROSSING...OLDHAM...HOLCUT AND JCOLEMAN STATE PARK.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

.STAY TUNED TO THIS BROADCAST FOR THE LATEST UPDATES AND INFORMATION.
TO REPORT SEVERE WEATHER ONLY...CALL 1 800 4 3 2 0 8 7 5.

&&

LAT...LON 3466 8812 3472 8832 3474 8832 3476 8834
      3483 8832 3496 8816 3492 8813 3490 8809
TIME...MOT...LOC 2137Z 253DEG 29KT 3476 8824

$$


TLSJR

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 Memphis, TN wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 20, 3:32 PM CDT, 50 minutes earlier.

Area forecast discussion, Apr 20, 3:32 PM CDT, 50 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MEMPHIS TN
332 PM CDT WED APR 20 2011

.DISCUSSION...
A VERY ACTIVE PATTERN CONTINUES ACROSS THE MIDSOUTH AS A STALLED
FRONTAL BOUNDARY CURRENTLY POSITIONED ACROSS SOUTH CENTRAL
ARKANSAS STRETCHING THROUGH NORTH CENTRAL MISSISSIPPI CONTINUES TO
TRIGGER SHOWERS AND THUNDERSTORMS IN AN AIR MASS THAT IS STILL
QUITE UNSTABLE. ADDITIONAL SHOWERS AND THUNDERSTORMS ACROSS
CENTRAL ARKANSAS WILL CONTINUE TO PUSH EAST AND INTO THE MIDSOUTH
THROUGH THE NIGHT AS LONG AS THE BOUNDARY REMAINS. BELIEVE MOST
ACTIVITY SHOULD REMAIN SOUTH OF INTERSTATE 40 WITH BETTER
INSTABILITY.

UPPER FLOW REMAINS ZONAL WHICH WILL ALLOW THE STALLED BOUNDARY
ALONG WITH AVAILABLE THERMODYNAMICS TO BE THE ONLY FORCING
MECHANISMS. WILL KEEP TIMING AND PLACEMENT OF ONGOING FFA ACROSS
NORTHERN MISSISSIPPI. CELLS CONTINUE TO TRAIN ALONG THE STALLED
FRONTAL BOUNDARY ACROSS AREAS THAT HAVE ALREADY EXPERIENCED COPIUS
AMOUNTS OF RAINFALL FROM PREVIOUS STORMS LAST NIGHT. DEPENDING ON
THE ADVANCEMENT OF ONGOING CONVECTION IN CENTRAL ARKANSAS...MAY
NEED TO EXTEND FFA FURTHER NORTH. WILL LEAVE AS IS FOR NOW.

OVERNIGHT AND INTO THURSDAY MORNING THE STALLED FRONT WILL BEGIN TO
PUSH NORTH AS A WARM FRONT PLACING THE ENTIRE MIDSOUTH BACK INTO THE
WARM SECTOR OF THE NEXT APPROACHING MID LATITUDE CYCLONE. SOUTHERLY
SURFACE WINDS WILL THEN INCREASE THROUGH THE EVENING AND INTO FRIDAY
MORNING INCREASING INSTABILITY. WINDS ARE EXPECTED TO BE NEAR
ADVISORY CRITERIA THROUGH THE DAY FRIDAY WITH SBCAPE VALUES AROUND
1200 J/KG...LIFTED INDICES BETWEEN -4 AND -6 C...AND A 50 KT LLJ
SWEEPING ACROSS NORTHEAST ARKANSAS AND SOUTHEAST MISSOURI. STRONG TO
SEVERE THUNDERSTORMS WILL BE POSSIBLE MAINLY ACROSS THESE AREAS WITH
CLOSER PROXIMITY TO BETTER UPPER DYNAMICS. THE LACK OF SUBSTANTIAL
SURFACE FORCING WILL BE THE MITIGATING FACTOR ELSEWHERE.

CHANCES FOR SHOWERS AND THUNDERSTORMS WILL CONTINUE THROUGH THE
WEEKEND MAINLY ACROSS THE NORTHERN HALF OF THE AREA WITH NORTHWEST
FLOW ALOFT AND AN ELONGATED SURFACE TROUGH STRETCHING NORTHEAST OUT
OF NORTHEAST TEXAS.

ANOTHER MORE POTENT SYSTEM WILL THEN AFFECT THE AREA INTO THE
BEGINNING OF NEXT WEEK. MODELS DIFFER ON THE TIMING OF PLACEMENT OF
THE SYSTEM AS A WHOLE. THE GFS IS MORE ROBUST WITH THE UPPER
DYNAMICS DEPICTING A WELL DEFINED CLOSED H5 LOW WHILE THE ECMWF
DEPICTS A SLIGHTLY WEAKER OPEN WAVE. THE ECMWF ALSO TRIES TO OCCLUDE
THE DEPARTING SURFACE LOW SLOWING DOWN THE ADVANCEMENT OF THE QPF.

TOOK A BLEND OF THE TWO MODELS FOR NOW...AWAITING BETTER AGREEMENT.
THIS SYSTEM WILL NEED TO BE MONITORED CLOSELY HOWEVER AS THE
MIDSOUTH LOOKS TO CONTINUE TO BE IN A VERY ACTIVE PATTERN THROUGH
MIDWEEK NEXT WEEK.

CCD

&&

.AVIATION...

18Z TAF CYCLE

SCATTERED THUNDERSTORMS WILL CONTINUE AROUND THE KTUP AREA FOR THE
REST OF THE AFTERNOON. GENERALLY MVFR CIGS EXPECTED ELSEWHERE
THROUGH MID AFTERNOON BEFORE SOME MODEST IMPROVEMENT IN CIGS. MORE
WIDESPREAD RAIN WILL LIKELY DEVELOP THIS EVENING WITH MVFR CIGS
EXPECTED FOR MUCH OF THE OVERNIGHT. A FEW THUNDERSTORMS ARE ALSO
FORECAST TONIGHT...BUT WILL REFRAIN FROM PREVAILING THUNDER FOR
NOW AND JUST MENTION VCTS.

BORGHOFF

&&

.PRELIMINARY POINT TEMPS/POPS...
MEM  55  75  63  84 /  50  50  20  10
MKL  50  74  61  83 /  30  50  30  20
JBR  51  69  59  81 /  30  50  40  30
TUP  57  80  63  83 /  70  50  20  10

&&

.MEG WATCHES/WARNINGS/ADVISORIES...
AR...FLASH FLOOD WATCH THROUGH THURSDAY MORNING FOR PHILLIPS.

MO...NONE.
MS...FLASH FLOOD WATCH THROUGH THURSDAY MORNING FOR CALHOUN-CHICKASAW-
     COAHOMA-ITAWAMBA-LAFAYETTE-LEE MS-MONROE-PANOLA-PONTOTOC-
     QUITMAN-TALLAHATCHIE-UNION-YALOBUSHA.

TN...NONE.
&&

Hazardous weather outlook, Apr 20, 3:40 PM CDT, 42 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE MEMPHIS TN
340 PM CDT WED APR 20 2011

ARZ008-009-017-018-026>028-035-036-048-049-058-MOZ113-115-
MSZ001>017-020>024-TNZ001>004-019>021-048>055-088>092-212245-
ALCORN-BENTON MS-CALHOUN-CARROLL-CHESTER-CHICKASAW-CLAY-COAHOMA-
CRAIGHEAD-CRITTENDEN-CROCKETT-CROSS-DESOTO-DECATUR-DUNKLIN-DYER-
FAYETTE-GIBSON-GREENE-HARDEMAN-HARDIN-HAYWOOD-HENDERSON-HENRY-
ITAWAMBA-LAFAYETTE-LAKE-LAUDERDALE-LAWRENCE-LEE AR-LEE MS-MADISON-
MARSHALL-MCNAIRY-MISSISSIPPI-MONROE-OBION-PANOLA-PEMISCOT-
PHILLIPS-POINSETT-PONTOTOC-PRENTISS-QUITMAN-RANDOLPH-SHELBY-
ST. FRANCIS-TALLAHATCHIE-TATE-TIPPAH-TIPTON-TISHOMINGO-TUNICA-
UNION-WEAKLEY-YALOBUSHA-
340 PM CDT WED APR 20 2011

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EAST ARKANSAS...
THE MISSOURI BOOTHEEL...NORTH MISSISSIPPI...AND WEST TENNESSEE.

.DAY ONE...THIS AFTERNOON AND TONIGHT

THERE IS A SLIGHT RISK FOR SEVERE THUNDERSTORMS THIS EVENING AND
TONIGHT ACROSS ALL OF NORTH MISSISSIPPI AND EAST CENTRAL
ARKANSAS. THE PRIMARY SEVERE WEATHER THREATS WILL BE LARGE HAIL
AND POSSIBLY DAMAGING WINDS.

IN ADDITION...HEAVY RAINFALL RATES...AS WELL AS A TENDENCY FOR
STORMS TO TRAIN ACROSS THE SAME AREA DUE TO A STALLED FRONTAL
BOUNDARY WILL RESULT IN A THREAT OF FLASH FLOODING. FLOODING WILL
BE MOST LIKELY BE POSSIBLE ACROSS THE AREAS LISTED ABOVE.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

ANOTHER ROUND OF STRONG TO SEVERE THUNDERSTORMS IS POSSIBLE ON
FRIDAY AS ANOTHER STORM SYSTEM MOVES OUT OF THE CENTRAL PLAINS. AT
THIS TIME SEVERE STORMS LOOK MOST LIKELY ACROSS SOUTH MISSOURI AND
NORTHEAST ARKANSAS...WITH DAMAGING WINDS THE MAIN THREAT.

.SPOTTER INFORMATION STATEMENT...

THE ACTIVATION OF STORM SPOTTERS...EMERGENCY MANAGEMENT OFFICIALS
AND AMATEUR RADIO OPERATORS IN SUPPORT OF SEVERE WEATHER
OPERATIONS MAY BE NEEDED THIS AFTERNOON ACROSS PORTIONS OF NORTH
MISSISSIPPI AND AGAIN ON FRIDAY.

CCD

In the hours before

Local storm report, Apr 20, 1:24 PM CDT, 2 hours 58 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MEMPHIS TN
124 PM CDT WED APR 20 2011

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

1042 PM     TSTM WND DMG     5 NE KEISER             35.73N 90.03W
04/19/2011                   MISSISSIPPI        AR   NWS EMPLOYEE

            STORAGE BUILDINGS WERE BLOWN OVER...A GAS STATION AWNING
            WAS BLOWN OFF...AND 2 GAS PUMPS AT A SEPARATE GAS STATION
            WERE BLOWN OVER. DAMAGE WAS JUST WEST OF OSCEOLA.

1052 PM     TSTM WND DMG     FRAYSER                 35.22N 89.97W
04/19/2011                   SHELBY             TN   TRAINED SPOTTER

            A LARGE TREE FELL ONTO A HOUSE NEAR FRAYSER BLVD. MEDIA
            IS REPORTING OTHER DAMAGE IN THE AREA.

1103 PM     TSTM WND DMG     BRIGHTON                35.48N 89.74W
04/19/2011                   TIPTON             TN   TRAINED SPOTTER

            SEVERAL TREES DOWN IN THE TOWN OF BRIGHTON.

1130 PM     TSTM WND DMG     5 NNW TRENTON           36.05N 88.97W
04/19/2011                   GIBSON             TN   EMERGENCY MNGR

            TREES DOWN BETWEEN HWY 185 AND HWY 45 NEAR THE COUNTRY
            CLUB.

&&

RRH

Local storm report, Apr 20, 2:03 PM CDT, 2 hours 19 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MEMPHIS TN
203 PM CDT WED APR 20 2011

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

0200 PM     HAIL             VERONA                  34.19N 88.72W
04/20/2011  E1.50 INCH       LEE                MS   FIRE DEPT/RESCUE

&&

BORGHOFF

Local storm report, Apr 20, 2:12 PM CDT, 2 hours 10 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MEMPHIS TN
212 PM CDT WED APR 20 2011

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

0205 PM     HAIL             VERONA                  34.19N 88.72W
04/20/2011  E1.00 INCH       LEE                MS   TRAINED SPOTTER

            QUARTER SIZE HAIL REPORTED AT THE INTERSECTION OF HWY 45
            AND MAIN STREET IN VERONA.

&&

RRH

Local storm report, Apr 20, 3:27 PM CDT, 55 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MEMPHIS TN
327 PM CDT WED APR 20 2011

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

0315 PM     HAIL             MILLINGTON              35.33N 89.89W
04/20/2011  E0.75 INCH       SHELBY             TN   TRAINED SPOTTER

&&

BORGHOFF

Special weather statement, Apr 20, 3:34 PM CDT, 48 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MEMPHIS TN
334 PM CDT WED APR 20 2011

TNZ049-088-089-202100-
FAYETTE TN-SHELBY TN-TIPTON TN-
334 PM CDT WED APR 20 2011

...THE NATIONAL WEATHER SERVICE IN MEMPHIS HAS ISSUED A SIGNIFICANT
WEATHER ADVISORY UNTIL 400 PM CDT FOR...

  NORTHWESTERN FAYETTE COUNTY IN SOUTHWEST TENNESSEE...
  NORTHEASTERN SHELBY COUNTY IN SOUTHWEST TENNESSEE...
  SOUTHEASTERN TIPTON COUNTY IN SOUTHWEST TENNESSEE...

A STRONG THUNDERSTORM PRODUCING PEA SIZE HAIL OR LARGER WAS LOCATED 5
MILES WEST OF ARLINGTON AT 334 PM CDT...MOVING EAST AT 25 MPH.

PEOPLE IN FAYETTE...SHELBY AND TIPTON COUNTIES SHOULD MONITOR THIS
STORM CLOSELY.

&&

LAT...LON 3547 8951 3527 8945 3526 8978 3535 8981
TIME...MOT...LOC 2034Z 255DEG 22KT 3531 8971

TLSJR

Local storm report, Apr 20, 3:54 PM CDT, 28 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MEMPHIS TN
354 PM CDT WED APR 20 2011

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

1055 PM     TSTM WND DMG     MILLINGTON              35.33N 89.89W
04/19/2011                   SHELBY             TN   PUBLIC

            MEDIUM SIZED TREE BLOWN IN HALF. THE TOP HALF OF THE TREE
            CRASHED INTO TWO FENCES WITH MAJOR DAMAGE TO THE FENCES
            IN A RESIDENTIAL NEIGHBORHOOD. WIND SPEED OF 65 MPH WAS
            REPORTED.

&&

CCD

The office that day

Everything else NWS Memphis, TN issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 19, 9:43 PM CDT	Severe Thunderstorm Warning	MEG	Coahoma	47 min
Apr 19, 10:22 PM CDT	Severe Thunderstorm Warning	MEG	Coahoma, DeSoto, Panola, Quitman, Tate, Tunica	38 min
Apr 19, 10:55 PM CDT	Tornado Warning	MEG	DeSoto	29 min
Apr 19, 10:59 PM CDT	Severe Thunderstorm Warning	MEG	Benton, DeSoto, Lafayette, Marshall, Panola, Tate and 1 more	46 min
Apr 19, 11:22 PM CDT	Severe Thunderstorm Warning	MEG	Benton, DeSoto, Marshall, Tate, Tippah, Tunica	38 min
Apr 19, 11:45 PM CDT	Severe Thunderstorm Warning	MEG	Alcorn, Benton, Tippah, Tishomingo	45 min
Apr 19, 11:51 PM CDT	Severe Thunderstorm Warning	MEG	Benton, DeSoto, Marshall, Tate, Tippah	39 min
Apr 20, 12:32 AM CDT	Severe Thunderstorm Warning	MEG	Benton, Marshall	43 min
Apr 20, 12:55 AM CDT	Severe Thunderstorm Warning	MEG	Coahoma, Quitman, Tunica	50 min
Apr 20, 12:57 AM CDT	Severe Thunderstorm Warning	MEG	Coahoma	48 min
Apr 20, 1:36 AM CDT	Severe Thunderstorm Warning	MEG	Lafayette, Marshall, Panola, Quitman, Tate, Tunica	39 min
Apr 20, 1:39 AM CDT	Severe Thunderstorm Warning	MEG	Coahoma, Panola, Quitman	51 min
Apr 20, 1:48 AM CDT	Severe Thunderstorm Warning	MEG	Coahoma, Panola, Quitman, Tallahatchie, Yalobusha	42 min
Apr 20, 2:29 AM CDT	Severe Thunderstorm Warning	MEG	Lafayette, Panola, Quitman, Tallahatchie, Yalobusha	46 min
Apr 20, 2:43 AM CDT	Severe Thunderstorm Warning	MEG	Calhoun, Lafayette, Lee, Pontotoc, Prentiss, Union	47 min
Apr 20, 3:10 AM CDT	Severe Thunderstorm Warning	MEG	Calhoun, Chickasaw, Itawamba, Lee, Monroe, Pontotoc and 1 more	50 min
Apr 20, 3:18 AM CDT	Flash Flood Watch	MEG	Alcorn, Benton, Calhoun, Chickasaw, Coahoma, DeSoto and 16 more	30 hr
Apr 20, 3:29 AM CDT	Severe Thunderstorm Warning	MEG	Calhoun, Chickasaw, Itawamba, Lee, Monroe, Pontotoc	46 min
Apr 20, 3:54 AM CDT	Severe Thunderstorm Warning	MEG	Itawamba, Monroe	51 min
Apr 20, 3:59 AM CDT	Severe Thunderstorm Warning	MEG	Calhoun, Chickasaw, Monroe, Pontotoc	46 min
Apr 20, 4:36 AM CDT	Severe Thunderstorm Warning	MEG	Calhoun, Chickasaw, Tallahatchie, Yalobusha	39 min
Apr 20, 4:39 AM CDT	Severe Thunderstorm Warning	MEG	Chickasaw, Itawamba, Monroe	51 min
Apr 20, 4:56 AM CDT	Flash Flood Warning	MEG	Calhoun, Chickasaw, Monroe	2 hr
Apr 20, 5:40 AM CDT	Severe Thunderstorm Warning	MEG	Itawamba, Lee, Monroe	36 min
Apr 20, 8:16 AM CDT	Severe Thunderstorm Warning	MEG	Chickasaw	27 min
Apr 20, 10:10 AM CDT	Severe Thunderstorm Warning	MEG	Lafayette, Panola	50 min
Apr 20, 10:58 AM CDT	Severe Thunderstorm Warning	MEG	Calhoun, Lafayette, Yalobusha	47 min
Apr 20, 11:27 AM CDT	Severe Thunderstorm Warning	MEG	Calhoun, Chickasaw, Lafayette, Pontotoc	63 min
Apr 20, 12:24 PM CDT	Severe Thunderstorm Warning	MEG	Chickasaw, Lee, Monroe, Pontotoc	51 min
Apr 20, 12:57 PM CDT	Flash Flood Warning	MEG	Chickasaw, Lee, Monroe, Pontotoc	3 hr
Apr 20, 1:05 PM CDT	Severe Thunderstorm Warning	MEG	Calhoun, Chickasaw	55 min
Apr 20, 1:13 PM CDT	Severe Thunderstorm Warning	MEG	Chickasaw, Lee, Monroe	62 min
Apr 20, 1:44 PM CDT	Severe Thunderstorm Warning	MEG	Monroe	26 min
Apr 20, 1:54 PM CDT	Severe Thunderstorm Warning	MEG	Itawamba, Lee	20 min
Apr 20, 2:28 PM CDT	Severe Thunderstorm Warning	MEG	Monroe	36 min
Apr 20, 3:34 PM CDT	Severe Thunderstorm Warning	MEG	Chickasaw	24 min
Apr 20, 4:20 PM CDT	Severe Thunderstorm Warning	MEG	Calhoun, Lee, Pontotoc, Union	40 min
Apr 20, 4:51 PM CDT	Severe Thunderstorm Warning	MEG	Tunica	54 min
Apr 20, 4:54 PM CDT	Flash Flood Warning	MEG	Coahoma, Tunica	7 hr
Apr 20, 4:54 PM CDT	Severe Thunderstorm Warning	MEG	Alcorn, Tishomingo	36 min
Apr 20, 5:06 PM CDT	Severe Thunderstorm Warning	MEG	Itawamba, Lee, Pontotoc, Prentiss, Union	39 min
Apr 20, 5:31 PM CDT	Severe Thunderstorm Warning	MEG	DeSoto, Panola, Quitman, Tate, Tunica	44 min
Apr 20, 5:34 PM CDT	Severe Thunderstorm Warning	MEG	Chickasaw, Itawamba, Lee, Monroe, Pontotoc	41 min
Apr 20, 5:39 PM CDT	Severe Thunderstorm Warning	MEG	Coahoma, Panola, Quitman, Tate, Tunica	51 min
Apr 20, 5:43 PM CDT	Severe Thunderstorm Warning	MEG	Lafayette, Marshall, Panola, Union	47 min
Apr 20, 5:44 PM CDT	Severe Thunderstorm Warning	MEG	Itawamba, Lee, Prentiss, Tishomingo	46 min
Apr 20, 5:47 PM CDT	Severe Thunderstorm Warning	MEG	Lafayette, Marshall, Panola, Tate	43 min
Apr 20, 6:22 PM CDT	Severe Thunderstorm Warning	MEG	Benton, Lafayette, Marshall, Panola, Tate, Union	38 min
Apr 20, 6:23 PM CDT	Flash Flood Warning	MEG	Coahoma, DeSoto, Lafayette, Marshall, Panola, Quitman and 2 more	5 hr
Apr 20, 6:25 PM CDT	Severe Thunderstorm Warning	MEG	Benton, Lafayette, Marshall, Tippah, Union	50 min
Apr 20, 6:31 PM CDT	Severe Thunderstorm Warning	MEG	Itawamba, Tishomingo	29 min
Apr 20, 6:43 PM CDT	Severe Thunderstorm Warning	MEG	Benton, Lafayette, Marshall, Panola, Pontotoc, Tippah and 1 more	47 min
Apr 20, 6:52 PM CDT	Severe Thunderstorm Warning	MEG	Panola, Quitman, Tallahatchie, Yalobusha	38 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive.