Alert archive / Mississippi / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 229, NWS Jackson, MS

April 20, 2011Attala County, Leake County, Madison County, Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at Apr 20, 2011, 8:46 PM CDT for Attala County, Leake County, Madison County, Mississippi. It was in force for 22 min. 1 report 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, 8:46 PM CDT (01:46 UTC)
Expired: Apr 20, 2011, 9:08 PM CDT
In force: 22 min
Issued by: NWS Jackson, MS
Area: Storm-based polygon

Counties Attala County, MS, Leake County, MS, Madison County, MS

The radar

The Jackson/Brandon,MS radar (KDGX), 95 km from the middle of the area, began a volume at 01:48 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What was reported inside it

Time	Report	Where	Remark
Apr 20, 8:52 PM CDT	TSTM WND DMG	2 W Kosciusko, MS	TREES DOWN ON HWY 12 WEST OF KOSCIUSKO.

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

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched one storm report to this severe thunderstorm warning; the first came 6 minutes after it went out.

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, 7:45 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Jackson, MS (KJAN), launched 00:00Z, 1.8 hours before the alert went out and 96 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: 1623 J/kg
Mixed-layer CIN: -6 J/kg
Mixed-layer LCL: 1572 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 74 m²/s²
0-3 km storm-relative helicity: 95 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 2.5

Open this sounding in Storm Lab

The text

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

124 
WUUS54 KJAN 210146
SVRJAN
MSC007-079-089-210245-
/O.NEW.KJAN.SV.W.0229.110421T0146Z-110421T0245Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE JACKSON MS
846 PM CDT WED APR 20 2011

THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  ATTALA COUNTY IN CENTRAL MISSISSIPPI...
  THIS INCLUDES THE CITY OF KOSCIUSKO...
  NORTHWESTERN LEAKE COUNTY IN CENTRAL MISSISSIPPI...
  NORTHEASTERN MADISON COUNTY IN CENTRAL MISSISSIPPI...

* UNTIL 945 PM CDT

* AT 846 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING PING PONG BALL SIZE
  HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS
  LOCATED 6 MILES SOUTHWEST OF NEWPORT MOVING NORTHEAST AT 20 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  THOMASTOWN...MCADAMS...HESTERVILLE AND SMYRNA

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THE HAIL BEING PRODUCED BY THIS SEVERE THUNDERSTORM WILL LIKELY
DAMAGE CARS AND ROOFS. PEOPLE WHO ARE OUT OF DOORS SHOULD MOVE INSIDE
A STRUCTURE IMMEDIATELY.

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.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 200 AM CDT
THURSDAY MORNING FOR SOUTHEAST ARKANSAS AND NORTHEAST LOUISIANA AND
NORTHERN MISSISSIPPI.

&&

LAT...LON 3319 8932 3303 8932 3275 8981 3289 8987
      3329 8966
TIME...MOT...LOC 0146Z 230DEG 17KT 3288 8979

$$

BK

1 follow-up statement

735 
WWUS54 KJAN 210208
SVSJAN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
908 PM CDT WED APR 20 2011

MSC007-079-089-210218-
/O.CAN.KJAN.SV.W.0229.000000T0000Z-110421T0245Z/
MADISON MS-LEAKE MS-ATTALA MS-
908 PM CDT WED APR 20 2011

...THE SEVERE THUNDERSTORM WARNING FOR ATTALA...NORTHWESTERN LEAKE
AND NORTHEASTERN MADISON COUNTIES IS CANCELLED...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 200 AM CDT
THURSDAY MORNING FOR SOUTHEAST ARKANSAS AND NORTHEAST LOUISIANA AND
NORTHERN MISSISSIPPI.

LAT...LON 3319 8932 3303 8932 3275 8981 3289 8987
      3329 8966
TIME...MOT...LOC 0208Z 230DEG 17KT 3295 8969

$$

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 20, 5:27 PM CDT, 3 hours 19 minutes earlier.

Area forecast discussion, Apr 20, 5:27 PM CDT, 3 hours 19 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE JACKSON MS
527 PM CDT WED APR 20 2011

.DISCUSSION...SHOWERS AND THUNDERSTORMS CONTINUE TO DEVELOP NORTH OF
THE AREA AND OVER EAST CENTRAL MISSISSIPPI THIS AFTERNOON AND EARLY
EVENING. THE BOUNDARY STILL REMAINS FROM GREENWOOD BACK INTO
NORTHEAST TEXAS...WITH SHOWERS AND THUNDERSTORMS FIRING ALONG THE
BOUNDARY AND SLOWLY MOVING ACROSS EAST CENTRAL MISSISSIPPI. MUCH OF THE
ACTIVITY TO THE WEST SEEMS TO BE MOVING NORTH AND EAST WITH A WEAK
UPPER WAVE. DEVELOPMENT TO THE SOUTH HAS BEEN SLOW. THE MODELS
CONTINUE TO SUGGEST THE BOUNDARY WILL SINK FURTHER SOUTH AND STORMS
WILL DEVELOP OVER THE NORTHERN HALF OF THE AREA. WITH THE BOUNDARY
STALLED AND THE WAVE TO THE WEST NOT HELPING TO MOVE THE SYSTEM OUT
OF THE AREA...IT IS UNCLEAR HOW FAR SOUTH TO EXPECT THUNDERSTORM
ACTIVITY. WILL NOT ADJUST THE FLASH FLOOD WARNING AT THIS
TIME...SINCE STORMS HAVE GENERALLY BEEN EAST OF THE RIVER ALONG THE
HIGHWAY 82 CORRIDOR. WITH THE UNCERTAINTY IN THE MOVEMENT OF THE
BOUNDARY ALL COUNTIES WILL LIKELY REMAIN IN THE SEVERE THUNDERSTORM
WATCH FOR THE DURATION.

THE LOCAL MODELS WERE SUGGESTING THE BEST WIND AND HAIL POTENTIAL
WILL REMAIN OVER EAST CENTRAL MISSISSIPPI. THERE WERE SOME BREAKS IN
THE CLOUDS...WHERE TEMPERATURES HAVE REACHED IN THE MID AND UPPER
80S. THE BEST INSTABILITY WAS OVER THE EASTERN HALF OF THE AREA...SO
EXPECTING STORMS OVER THE AREA TO INTENSIFY QUICKLY THROUGH AT LEAST
SUNSET. ANTICIPATING THE INSTABILITY TO CONTINUE TO LESSEN THROUGH
THE EVENING...BUT THE FLOODING POTENTIAL WILL LIKELY INCREASE.
SHOWERS WERE FINALLY STARTING TO DEVELOP TO THE SOUTH AND
WEST...BASICALLY RIGHT ON THE BOUNDARY. THE SOUTHERLY FLOW ON THE
RADAR SHOWS THE AREA OF CONVERGENCE...GENERALLY STRETCHING FROM
BASTROP LOUISIANA TO TCHULA TO STARKVILLE...SO ACTIVITY WILL LIKELY
INCREASE SHORTLY AND CONTINUE FOR THE NEXT FEW HOURS.

FOR THE FORECAST...MAINTAINED LIKELY POPS ALONG THE HIGHWAY 82
CORRIDOR THROUGH TONIGHT...EXPECTING THE BEST STORMS AND HEAVY RAIN
TO REMAIN OVER THAT AREA. THE BOUNDARY/UPPER TROUGH AXIS WILL SHIFT
NORTH THURSDAY...AS THE RIDGE OVER THE SOUTHEAST US RETROGRADES.
LOOKING FOR THE RAIN TO MOVE OUT OF THE AREA BY THURSDAY
AFTERNOON...WITH ONLY ISOLATED ACTIVITY LINGERING THROUGH 03-6Z.
MAINTAINED HEAVY RAINFALL WORDING...WITH SO MUCH MOISTURE FLOWING
INTO THE AREA. WILL HAVE TO LOOK AT THE EXTENDING THE FFA THROUGH 00Z
THURSDAY. HIGH PRESSURE TAKES OVER BY FRIDAY AND THE AREA WILL BE
GENERALLY DRY THROUGH THE WEEKEND. THERE MAY BE SOME ISOLATED SHOWERS
AND THUNDERSTORMS.

WENT WITH GUIDANCE TEMPS...MID TO UPPER 80S SEEM OK FOR THE NEXT FEW
DAYS. WILL SEE SOME VERY WARM LOWS WITH VALUES IN THE MID TO UPPER
60S.

&&

.AVIATION...
A FRONTAL BOUNDARY REMAINS STALLED ACROSS NORTHERNWESTERN MS. SHWRS/TSTMS
WILL PERSIST ACROSS NE MS...WITH DEVELOPMENT BACK TO THE WEST APPROACHING
LATE THIS AFTERNOON INTO THE EVENING. HEAVY RAIN...HAIL AND GUSTY
WINDS XPCTD INVOF THIS ACTIVITY. VFR CONDS WL PERSIST FOR LOCATIONS
ALONG AND S OF I-20 TODAY...WITH MVFR/OCSNL VFR CIG LIKELY CONTINUING
ACROSS NRN MS THRU THE DAY. OUTSIDE OF STORMS SFC WINDS WL BE OUT OF
THE SOUTH IN THE 7-12KT RANGE...WITH A FEW GUSTS TO 18KTS PSBL ACROSS
SRN MS. THE CHANCE FOR SHWRS/TSTMS WL PERSIST N OF I-20 THRU THE
NIGHT TONIGHT. /BK/

&&

.PRELIMINARY POINT TEMPS/POPS...
JACKSON       66  84  67  86 /  33  18  10  11
MERIDIAN      64  85  62  86 /  40  19  13  12
VICKSBURG     65  85  66  87 /  30  19   9  11
HATTIESBURG   68  87  65  87 /  16  14   9   5
NATCHEZ       67  86  65  84 /  20  15   9   9
GREENVILLE    62  81  65  86 /  59  36  16  13
GREENWOOD     61  82  66  86 /  61  37  17  14

&&

.JAN WATCHES/WARNINGS/ADVISORIES...
MS...FLASH FLOOD WATCH THROUGH LATE TONIGHT FOR MSZ018-019-025>039-
     044>046.

LA...NONE.
AR...NONE.
&&

07/BK/

Hazardous weather outlook, Apr 20, 4:27 PM CDT, 4 hours 19 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE JACKSON MS
427 PM CDT WED APR 20 2011

LAZ024-026-MSZ059>066-072>074-212130-
CATAHOULA-CONCORDIA-JEFFERSON-ADAMS-FRANKLIN MS-LINCOLN-LAWRENCE-
JEFFERSON DAVIS-COVINGTON-JONES-MARION-LAMAR-FORREST-
427 PM CDT WED APR 20 2011

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

.DAY ONE...TONIGHT AND THURSDAY

THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW.

.DAYS TWO THROUGH SEVEN...THURSDAY NIGHT THROUGH TUESDAY

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 TUESDAY.

ARZ074-075-LAZ007>009-015-016-023-025-MSZ018-019-025>058-212130-
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-MADISON MS-LEAKE-NESHOBA-KEMPER-WARREN-HINDS-RANKIN-
SCOTT-NEWTON-LAUDERDALE-CLAIBORNE-COPIAH-SIMPSON-SMITH-JASPER-
CLARKE-
427 PM CDT WED APR 20 2011

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

.DAY ONE...TONIGHT AND THURSDAY

SCATTERED SEVERE STORMS WILL BE POSSIBLE ACROSS THE ARKLAMISS THIS
AFTERNOON AND EVENING. A SLOW MOVING COLD FRONT WILL TRACK ACROSS THE
MOIST AND UNSTABLE ATMOSPHERE. THE PRIMARY RISKS ARE LARGE HAIL TO
THE SIZE OF GOLF BALLS AND DAMAGING WINDS GUSTS UP TO 70 MPH. A FEW
TORNADOES CAN BE RULED OUT...ESPECIALLY FOR EAST CENTRAL MISSISSIPPI.
WHILE SEVERE THUNDERSTORMS ARE POSSIBLE FOR MUCH OF THE AREA NORTH
OF THE HIGHWAY 84 CORRIDOR...THE MOST INTENSE STORMS WILL BE NORTH OF
INTERSTATE 20.

IN ADDITION TO THE RISK OF SEVERE STORMS...HEAVY RAIN AND LOCALIZED
FLASH FLOODING WILL BE LIKELY FOR MUCH OF THE REGION. MANY AREAS ALONG A
LINE FROM HOLLANDALE TO DURANT TO MACON HAVE RECEIVED RAINFALL
AMOUNTS OF 2 TO 4 INCHES. HEAVY DOWNPOURS HAVE ALREADY CAUSED ROAD
CLOSURES IN A FEW COMMUNITIES. ADDITIONAL RAINFALL AMOUNTS OF 2 TO 4
INCHES...WITH ISOLATED AMOUNTS NEAR 6 INCHES WILL BE POSSIBLE THROUGH
THURSDAY MORNING.

.DAYS TWO THROUGH SEVEN...THURSDAY NIGHT THROUGH TUESDAY

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 TUESDAY.

FOR MORE INFORMATION PLEASE VISIT OUR WEBSITE AT
WWW.SRH.NOAA.GOV/JAN. THIS INCLUDES THE GRAPHICAL HAZARDOUS
WEATHER OUTLOOK.

In the hours before

Local storm report, Apr 20, 7:58 PM CDT, 48 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON MS
758 PM CDT WED APR 20 2011

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

0740 PM     TSTM WND DMG     3 E GRENADA             33.78N 89.76W
04/20/2011                   GRENADA            MS   EMERGENCY MNGR

            SEVERAL TREES AND POWER LINES DOWNED ACROSS THE CITY OF
            GRENADA...AND IN GRENADA COUNTY EAST OF THE CITY.

&&

DL

Local storm report, Apr 20, 8:00 PM CDT, 46 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON MS
800 PM CDT WED APR 20 2011

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

0750 PM     TSTM WND DMG     COLUMBUS                33.51N 88.40W
04/20/2011                   LOWNDES            MS   EMERGENCY MNGR

            A TREE WAS DOWNED ALONG 20TH ST N.

&&

DL

Local storm report, Apr 20, 8:04 PM CDT, 42 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON MS
804 PM CDT WED APR 20 2011

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

&&

DL

Local storm report, Apr 20, 8:36 PM CDT, 10 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON MS
836 PM CDT WED APR 20 2011

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

0735 PM     HAIL             2 E CRAWFORD            33.30N 88.58W
04/20/2011  E1.75 INCH       LOWNDES            MS   EMERGENCY MNGR

            REPORTED ALONG TARLTON RD

&&

DL

Local storm report, Apr 20, 8:38 PM CDT, 8 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON MS
838 PM CDT WED APR 20 2011

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

0835 PM     HAIL             COLUMBUS                33.51N 88.40W
04/20/2011  E1.75 INCH       LOWNDES            MS   EMERGENCY MNGR

            REPORTED ALONG ALABAMA ST...ALSO PENNY SIZE HAIL FALLING
            ON NASHVILLE FERRY RD.

&&

DL

Local storm report, Apr 20, 8:43 PM CDT, 3 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON MS
843 PM CDT WED APR 20 2011

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

0842 PM     HAIL             COLUMBUS                33.51N 88.40W
04/20/2011  E1.75 INCH       LOWNDES            MS   EMERGENCY MNGR

            REPORTED AT THE COUNTY EOC

&&

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 20, 7:00 PM CDT	Tornado Warning	JAN	Montgomery, Webster	60 min
Apr 20, 7:06 PM CDT	Severe Thunderstorm Warning	JAN	Carroll, Holmes, Leflore	39 min
Apr 20, 7:11 PM CDT	Severe Thunderstorm Warning	JAN	Clay, Lowndes, Noxubee, Oktibbeha	49 min
Apr 20, 7:13 PM CDT	Tornado Warning	JAN	Carroll, Choctaw, Montgomery, Webster	62 min
Apr 20, 7:35 PM CDT	Special Weather Statement	JAN	Holmes	30 min
Apr 20, 7:40 PM CDT	Tornado Warning	JAN	Carroll	46 min
Apr 20, 7:43 PM CDT	Severe Thunderstorm Warning	JAN	Leflore, Sunflower	31 min
Apr 20, 7:48 PM CDT	Tornado Warning	JAN	Lowndes	57 min
Apr 20, 7:52 PM CDT	Severe Thunderstorm Warning	JAN	Attala, Holmes, Madison, Yazoo	53 min
Apr 20, 8:01 PM CDT	Severe Thunderstorm Warning	JAN	Choctaw, Grenada, Montgomery, Webster	44 min
Apr 20, 8:03 PM CDT	Severe Thunderstorm Warning	JAN	Carroll, Holmes	16 min
Apr 20, 8:32 PM CDT	Tornado Warning	JAN	Attala, Choctaw, Oktibbeha, Winston	43 min
Apr 20, 8:33 PM CDT	Flash Flood Warning	JAN	Choctaw, Clay, Lowndes, Montgomery, Oktibbeha, Webster	3 hr
Apr 20, 8:44 PM CDT	Tornado Warning	JAN	Lowndes	61 min
Apr 20, 8:48 PM CDT	Severe Thunderstorm Warning	JAN	Clay, Lowndes, Oktibbeha	57 min
Apr 20, 9:01 PM CDT	Severe Thunderstorm Warning	JAN	Noxubee, Winston	59 min
Apr 20, 9:18 PM CDT	Severe Thunderstorm Warning	JAN	Lowndes, Noxubee	57 min
Apr 20, 9:37 PM CDT	Special Weather Statement	JAN	Hinds	28 min
Apr 20, 9:46 PM CDT	Flash Flood Warning	JAN	Noxubee	3 hr
Apr 20, 9:49 PM CDT	Severe Thunderstorm Warning	JAN	Hinds, Madison, Rankin	41 min
Apr 20, 10:05 PM CDT	Areal Flood Warning	JAN	Carroll, Grenada, Montgomery	12 hr
Apr 20, 10:25 PM CDT	Severe Thunderstorm Warning	JAN	Hinds, Madison, Rankin, Scott	50 min
Apr 20, 11:10 PM CDT	Severe Thunderstorm Warning	JAN	Issaquena, Sharkey	65 min
Apr 20, 11:28 PM CDT	Flash Flood Warning	JAN	Lowndes	3 hr
Apr 20, 11:28 PM CDT	Special Weather Statement	JAN	Winston	32 min
Apr 20, 11:33 PM CDT	Severe Thunderstorm Warning	JAN	Scott	42 min
Apr 20, 11:52 PM CDT	Severe Thunderstorm Warning	JAN	Sharkey, Yazoo	37 min
Apr 21, 12:07 AM CDT	Severe Thunderstorm Warning	JAN	Newton, Scott	19 min
Apr 21, 12:47 AM CDT	Severe Thunderstorm Warning	JAN	Kemper, Neshoba	20 min
Apr 21, 12:57 AM CDT	Special Weather Statement	JAN	Scott	28 min
Apr 21, 1:06 AM CDT	Special Weather Statement	JAN	Madison	29 min
Apr 21, 1:42 AM CDT	Flash Flood Warning	JAN	Kemper, Neshoba, Noxubee, Winston	2 hr
Apr 21, 2:18 AM CDT	Special Weather Statement	JAN	Lauderdale	32 min
Apr 21, 2:21 AM CDT	River Flood Warning	JAN	Carroll, Leflore	41 hr
Apr 21, 6:37 AM CDT	Special Weather Statement	JAN	Sharkey	33 min
Apr 21, 6:50 AM CDT	Severe Thunderstorm Warning	JAN	Issaquena, Sharkey, Yazoo	40 min
Apr 21, 7:16 AM CDT	Special Weather Statement	JAN	Warren	19 min
Apr 21, 7:20 AM CDT	Severe Thunderstorm Warning	JAN	Issaquena, Warren	40 min
Apr 21, 7:44 AM CDT	Special Weather Statement	JAN	Yazoo	31 min
Apr 21, 7:48 AM CDT	Severe Thunderstorm Warning	JAN	Yazoo	42 min
Apr 21, 7:59 AM CDT	Severe Thunderstorm Warning	JAN	Issaquena, Warren, Yazoo	49 min
Apr 21, 8:03 AM CDT	River Flood Warning	JAN	Noxubee	3 days
Apr 21, 8:47 AM CDT	Special Weather Statement	JAN	Yazoo	18 min
Apr 21, 9:11 AM CDT	Severe Thunderstorm Warning	JAN	Yazoo	22 min
Apr 21, 9:14 AM CDT	Severe Thunderstorm Warning	JAN	Issaquena, Sharkey	45 min
Apr 21, 9:50 AM CDT	Flash Flood Warning	JAN	Yazoo	115 min
Apr 21, 10:31 AM CDT	Special Weather Statement	JAN	Hinds, Warren, Yazoo	29 min
Apr 21, 10:53 AM CDT	Severe Thunderstorm Warning	JAN	Hinds, Madison, Rankin	67 min
Apr 21, 11:46 AM CDT	Special Weather Statement	JAN	Copiah	29 min
Apr 21, 11:50 AM CDT	Severe Thunderstorm Warning	JAN	Copiah	55 min
Apr 21, 1:03 PM CDT	Special Weather Statement	JAN	Franklin, Lincoln	32 min
Apr 21, 1:19 PM CDT	Special Weather Statement	JAN	Neshoba, Newton	31 min
Apr 21, 1:26 PM CDT	Severe Thunderstorm Warning	JAN	Jefferson Davis, Lawrence	49 min
Apr 21, 1:27 PM CDT	Severe Thunderstorm Warning	JAN	Kemper, Lauderdale, Newton	63 min
Apr 21, 1:45 PM CDT	Special Weather Statement	JAN	Lincoln	30 min
Apr 21, 2:13 PM CDT	Special Weather Statement	JAN	Jefferson Davis, Lawrence	32 min
Apr 21, 2:14 PM CDT	Tornado Warning	JAN	Jasper	12 min
Apr 21, 2:47 PM CDT	Special Weather Statement	JAN	Covington, Marion	28 min
Apr 21, 3:09 PM CDT	Special Weather Statement	JAN	Jones, Lamar, Marion	31 min
Apr 21, 3:35 PM CDT	Special Weather Statement	JAN	Jones, Lamar	30 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; radar from the NEXRAD Level II archive.