Alert archive / Mississippi / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 213, NWS Jackson, MS

April 20, 2011Clay County, Lowndes County, Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at Apr 20, 2011, 2:22 PM CDT for Clay County, Lowndes County, Mississippi. It was in force for 38 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 20, 2011, 2:22 PM CDT (19:22 UTC)
Expired: Apr 20, 2011, 3:00 PM CDT
In force: 38 min
Issued by: NWS Jackson, MS
Area: Storm-based polygon

Counties Clay County, MS, Lowndes 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 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

Birmingham, AL (KBMX), launched 12:00Z, 7.4 hours before the alert went out and 160 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: 2075 J/kg
Mixed-layer CIN: -36 J/kg
Mixed-layer LCL: 550 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 151 m²/s²
0-3 km storm-relative helicity: 166 m²/s²
Significant tornado parameter: 1.3
Supercell composite: 7.5

Open this sounding in Storm Lab

The text

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

377 
WUUS54 KJAN 201922
SVRJAN
MSC025-087-202000-
/O.NEW.KJAN.SV.W.0213.110420T1922Z-110420T2000Z/

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

THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN CLAY COUNTY IN NORTHEAST MISSISSIPPI...
  THIS INCLUDES THE CITY OF WEST POINT...
  NORTHEASTERN LOWNDES COUNTY IN NORTHEAST MISSISSIPPI...
  THIS INCLUDES THE CITIES OF...COLUMBUS AFB...COLUMBUS...

* UNTIL 300 PM CDT

* AT 222 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR
  WEST POINT MOVING EAST AT 25 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO      
  WAVERLY...KOLOLA SPRINGS...CALEDONIA AND STEENS

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.

&&

LAT...LON 3346 8828 3346 8829 3358 8869 3368 8869
      3369 8849 3367 8848 3368 8845 3368 8841
      3371 8835 3370 8825
TIME...MOT...LOC 1922Z 288DEG 23KT 3366 8860

$$

40

2 follow-up statements

795 
WWUS54 KJAN 201948
SVSJAN

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

MSC025-201958-
/O.CAN.KJAN.SV.W.0213.000000T0000Z-110420T2000Z/
CLAY MS-
248 PM CDT WED APR 20 2011

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

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM CDT
WEDNESDAY EVENING FOR SOUTHEAST ARKANSAS AND NORTHEAST LOUISIANA AND
MISSISSIPPI.

LAT...LON 3346 8828 3346 8829 3357 8847 3363 8847
      3365 8850 3367 8846 3368 8841 3371 8835
      3370 8825
TIME...MOT...LOC 1948Z 278DEG 22KT 3365 8842

$$

MSC087-202000-
/O.CON.KJAN.SV.W.0213.000000T0000Z-110420T2000Z/
LOWNDES MS-
248 PM CDT WED APR 20 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 300 PM CDT
FOR NORTHEASTERN LOWNDES COUNTY...

AT 248 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE TRACKING
A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR
KOLOLA SPRINGS MOVING EAST AT 25 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
CALEDONIA AND STEENS

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.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM CDT
WEDNESDAY EVENING FOR SOUTHEAST ARKANSAS AND NORTHEAST LOUISIANA AND
MISSISSIPPI.

&&

LAT...LON 3346 8828 3346 8829 3357 8847 3363 8847
      3365 8850 3367 8846 3368 8841 3371 8835
      3370 8825
TIME...MOT...LOC 1948Z 278DEG 22KT 3365 8842

$$

40

924 
WWUS54 KJAN 201959
SVSJAN

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

MSC087-202007-
/O.EXP.KJAN.SV.W.0213.000000T0000Z-110420T2000Z/
LOWNDES MS-
259 PM CDT WED APR 20 2011

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN LOWNDES COUNTY
WILL EXPIRE AT 300 PM CDT...

THE STORM THAT PROMPTED THE SEVERE THUNDERSTORM WARNING HAS WEAKENED 
BELOW SEVERE LIMITS NEAR CALEDONIA MOVING EAST AT 25 MPH AND THE 
WARNING HAS BEEN ALLOWED TO EXPIRE. 

ANOTHER STRONG STORM WAS DEVELOPING 5 MILES WEST OF STEENS MOVING 
EAST AT 25 MPH. THIS STORM COULD BECOME SEVERE SHORTLY.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM CDT
WEDNESDAY EVENING FOR SOUTHEAST ARKANSAS AND NORTHEAST LOUISIANA AND
MISSISSIPPI.

LAT...LON 3346 8828 3346 8829 3357 8847 3363 8847
      3365 8850 3367 8846 3368 8841 3371 8835
      3370 8825
TIME...MOT...LOC 1957Z 278DEG 22KT 3364 8835

$$

40

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, 11:42 AM CDT, 2 hours 40 minutes earlier.

Area forecast discussion, Apr 20, 11:42 AM CDT, 2 hours 40 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE JACKSON MS
1142 AM CDT WED APR 20 2011

.UPDATE...DID A QUICK UPDATE TO ADJUST TEMPS IN AREAS WHERE RAIN HAS
DROPPED TEMPS AND CLOUDS MAY KEEP VALUES FROM REBOUNDING. STILL
LOOKING FOR MOST AREAS TO REACH THE MID TO UPPER 80S BY AFTERNOON.
THERE WERE PLENTY OF BREAKS IN THE CLOUDS. DEVELOPING STORMS CONTINUE
TO PRODUCE HEAVY RAINFALL...SO A FLASH FLOOD WATCH WAS ISSUED TO
COVER THE NORTHERN PORTIONS OF THE AREA. AS THE BOUNDARY
SHIFTS...WILL CONSIDER ADDING MORE COUNTIES TO THE SOUTH THIS
AFTERNOON. STORMS CONTINUE TO BUILD OVER THE NORTHEAST...WHERE RADAR
ESTIMATES WERE IN EXCESS OF 5 INCHES IN A FEW LOCATIONS.

THE BOUNDARY HAS NOT PROGRESSED EAST MUCH...SEEMS TO BE BETWEEN
GLH/GWO BACK ALONG THE LA/AR BORDER INTO NORTH TEXAS. WITH THE AREAS
SOUTH/EAST OF THE BOUNDARY GETTING SOME SUN...STILL ANTICIPATING MORE
SEVERE STORMS ACROSS THE AREA...MAINLY ALONG AND NORTH OF I-20/EAST
OF I-55. THE MORNING SOUNDINGS ACROSS THE REGION WERE CAPPED...HOWEVER
THE NAM BUFR SOUNDINGS SHOW THE CAP BREAKING AROUND 19Z. THE RUC
SUGGESTS THE BOUNDARY WILL MOVE AROUND THE SAME...PUSHING SHOWERS AND
THUNDERSTORMS FURTHER SOUTH...GENERALLY INTO THE I-20 CORRIDOR
BETWEEN 18/00Z. LOCAL MODELS SHOW MOSTLY SCATTERED ACTIVITY IN THE
AFTERNOON...WITH MORE WIDESPREAD DEVELOPMENT IN THE EVENING. LOOKS
LIKE THE NORTHEAST PORTIONS OF THE AREA WILL SEE THE MOST INTENSE
STORMS. STILL MAINLY LOOKING FOR HAIL/WINDS. FLASH FLOODING ALSO.

&&

.AVIATION...
A FRONTAL BOUNDARY REMAINS STALLED ACROSS NORTHERN MS THIS MORNING.
SHWRS/TSTMS WILL PERSIST ACROSS NE MS THIS MORNING...WITH
DEVELOPMENT BACK TO THE WEST PSBL AS WE APPROACH MID DAY. HIGH RES
MODELS SHOW TSTMS BECOMING MORE WDSPRD ACROSS THE ARKLAMISS LATER
THIS AFTN AS SURFACE HEATING CONTINUES. 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/ISOLD TSTMS WL
PERSIST N OF I-20 THRU THE NIGHT TONIGHT. /BK/

&&

.PRELIMINARY POINT TEMPS/POPS...
JACKSON       87  68  86  66 /  45  52  29  10
MERIDIAN      85  67  86  64 /  54  56  33  13
VICKSBURG     84  65  85  65 /  38  51  26   9
HATTIESBURG   88  71  88  66 /  11  22  10   9
NATCHEZ       85  68  87  67 /  12  30  10   9
GREENVILLE    81  62  81  67 /  59  70  39   9
GREENWOOD     81  62  82  68 /  60  71  43  10

&&

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

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

07/

Hazardous weather outlook, Apr 20, 1:50 PM CDT, 32 minutes before

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

LAZ024-026-MSZ059>066-072>074-211845-
CATAHOULA-CONCORDIA-JEFFERSON-ADAMS-FRANKLIN MS-LINCOLN-LAWRENCE-
JEFFERSON DAVIS-COVINGTON-JONES-MARION-LAMAR-FORREST-
150 PM CDT WED APR 20 2011

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH CENTRAL MISSISSIPPI AND
PORTIONS OF NORTHEAST LOUISIANA.

.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>058-211845-
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-
150 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. 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. 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 MAY BE NEEDED THROUGH TONIGHT.

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, 1:56 PM CDT, 26 minutes before

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

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

0155 PM     HAIL             JEFFERSON               33.63N 89.89W
04/20/2011  M1.75 INCH       CARROLL            MS   LAW ENFORCEMENT

&&

BK

Local storm report, Apr 20, 1:57 PM CDT, 25 minutes before

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

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

0140 PM     HAIL             4 NW JEFFERSON          33.67N 89.95W
04/20/2011  E1.75 INCH       CARROLL            MS   PUBLIC

&&

DL

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

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

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

0200 PM     HAIL             ELLIOTT                 33.68N 89.75W
04/20/2011  E0.75 INCH       GRENADA            MS   EMERGENCY MNGR

&&

DL

Local storm report, Apr 20, 2:05 PM CDT, 17 minutes before

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

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

0205 PM     HAIL             GRENADA                 33.78N 89.81W
04/20/2011  E0.75 INCH       GRENADA            MS   EMERGENCY MNGR

&&

DL

Local storm report, Apr 20, 2:08 PM CDT, 14 minutes before

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

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

0205 PM     HAIL             ELLIOTT                 33.68N 89.75W
04/20/2011  E1.00 INCH       GRENADA            MS   EMERGENCY MNGR

&&

DL

Local storm report, Apr 20, 2:22 PM CDT, 0 minutes before

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

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

0220 PM     HAIL             2 S MISTERTON           33.68N 89.59W
04/20/2011  E1.50 INCH       GRENADA            MS   EMERGENCY MNGR

            REPORTED IN THE RED HILL AREA

&&

DL

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 20, 1:24 AM CDT	Severe Thunderstorm Warning	JAN	Bolivar, Sunflower	51 min
Apr 20, 2:27 AM CDT	Special Weather Statement	JAN	Bolivar	28 min
Apr 20, 2:38 AM CDT	Special Weather Statement	JAN	Tallahatchie	27 min
Apr 20, 2:41 AM CDT	Severe Thunderstorm Warning	JAN	Bolivar, Leflore, Sunflower	49 min
Apr 20, 3:10 AM CDT	Severe Thunderstorm Warning	JAN	Bolivar	32 min
Apr 20, 4:10 AM CDT	Special Weather Statement	JAN	Clay	30 min
Apr 20, 4:22 AM CDT	Severe Thunderstorm Warning	JAN	Clay, Lowndes, Oktibbeha	68 min
Apr 20, 4:36 AM CDT	Severe Thunderstorm Warning	JAN	Carroll, Grenada, Leflore, Montgomery	54 min
Apr 20, 4:52 AM CDT	Severe Thunderstorm Warning	JAN	Washington	53 min
Apr 20, 5:25 AM CDT	Severe Thunderstorm Warning	JAN	Carroll, Choctaw, Montgomery, Webster	50 min
Apr 20, 5:47 AM CDT	Special Weather Statement	JAN	Leflore	28 min
Apr 20, 6:05 AM CDT	Severe Thunderstorm Warning	JAN	Holmes, Humphreys, Leflore, Sunflower, Washington	55 min
Apr 20, 6:31 AM CDT	Flash Flood Warning	JAN	Grenada	3 hr
Apr 20, 6:31 AM CDT	Severe Thunderstorm Warning	JAN	Grenada	44 min
Apr 20, 6:47 AM CDT	Severe Thunderstorm Warning	JAN	Choctaw, Oktibbeha, Winston	58 min
Apr 20, 7:21 AM CDT	Special Weather Statement	JAN	Winston	44 min
Apr 20, 7:41 AM CDT	Special Weather Statement	JAN	Carroll, Montgomery	44 min
Apr 20, 7:46 AM CDT	Special Weather Statement	JAN	Noxubee	44 min
Apr 20, 8:08 AM CDT	Flash Flood Warning	JAN	Carroll, Montgomery, Webster	3 hr
Apr 20, 8:37 AM CDT	Flash Flood Warning	JAN	Noxubee, Winston	113 min
Apr 20, 8:52 AM CDT	Special Weather Statement	JAN	Attala	43 min
Apr 20, 9:09 AM CDT	Areal Flood Warning	JAN	Grenada	6 hr
Apr 20, 9:14 AM CDT	Flash Flood Warning	JAN	Carroll, Montgomery	2 hr
Apr 20, 9:22 AM CDT	Flash Flood Watch	JAN	Attala, Bolivar, Carroll, Choctaw, Clay, Grenada and 21 more	31 hr
Apr 20, 10:20 AM CDT	Flash Flood Warning	JAN	Noxubee, Winston	115 min
Apr 20, 10:21 AM CDT	Special Weather Statement	JAN	Choctaw, Lowndes, Oktibbeha	59 min
Apr 20, 11:37 AM CDT	River Flood Warning	JAN	Bolivar, Washington	52 days
Apr 20, 11:37 AM CDT	River Flood Warning	JAN	Claiborne, Jefferson, Warren	58 days
Apr 20, 12:19 PM CDT	Special Weather Statement	JAN	Clay	31 min
Apr 20, 12:28 PM CDT	Severe Thunderstorm Warning	JAN	Clay, Oktibbeha, Webster	35 min
Apr 20, 12:44 PM CDT	Special Weather Statement	JAN	Carroll, Leflore, Montgomery, Sunflower	26 min
Apr 20, 12:52 PM CDT	Severe Thunderstorm Warning	JAN	Carroll, Grenada, Leflore	38 min
Apr 20, 1:27 PM CDT	Severe Thunderstorm Warning	JAN	Carroll, Grenada, Montgomery	63 min
Apr 20, 1:48 PM CDT	Severe Thunderstorm Warning	JAN	Clay	42 min
Apr 20, 2:29 PM CDT	Severe Thunderstorm Warning	JAN	Grenada, Montgomery, Webster	61 min
Apr 20, 3:12 PM CDT	Tornado Warning	JAN	Choctaw, Montgomery, Oktibbeha, Webster	33 min
Apr 20, 3:38 PM CDT	Severe Thunderstorm Warning	JAN	Clay, Oktibbeha, Webster	37 min
Apr 20, 3:44 PM CDT	Tornado Warning	JAN	Choctaw, Oktibbeha	61 min
Apr 20, 4:21 PM CDT	Flash Flood Warning	JAN	Choctaw, Clay, Oktibbeha, Webster	3 hr
Apr 20, 4:28 PM CDT	Severe Thunderstorm Warning	JAN	Oktibbeha	47 min
Apr 20, 4:41 PM CDT	Tornado Warning	JAN	Oktibbeha	34 min
Apr 20, 5:12 PM CDT	Tornado Warning	JAN	Clay, Lowndes, Oktibbeha	63 min
Apr 20, 5:29 PM CDT	Special Weather Statement	JAN	Carroll	26 min
Apr 20, 5:39 PM CDT	Severe Thunderstorm Warning	JAN	Carroll, Grenada, Montgomery	51 min
Apr 20, 6:06 PM CDT	Tornado Warning	JAN	Carroll, Grenada, Montgomery, Webster	54 min
Apr 20, 6:12 PM CDT	Special Weather Statement	JAN	Leflore	28 min
Apr 20, 6:12 PM CDT	Tornado Warning	JAN	Clay, Lowndes	63 min
Apr 20, 6:16 PM CDT	Severe Thunderstorm Warning	JAN	Carroll, Holmes, Leflore	44 min
Apr 20, 6:25 PM CDT	Special Weather Statement	JAN	Noxubee	30 min
Apr 20, 6:32 PM CDT	Severe Thunderstorm Warning	JAN	Lowndes, Oktibbeha	43 min
Apr 20, 6:35 PM CDT	Flash Flood Warning	JAN	Carroll, Grenada, Montgomery, Webster	115 min
Apr 20, 6:40 PM CDT	Special Weather Statement	JAN	Sunflower, Washington	30 min
Apr 20, 6:44 PM CDT	Severe Thunderstorm Warning	JAN	Bolivar, Leflore, Sunflower	46 min
Apr 20, 6:55 PM CDT	Tornado Warning	JAN	Carroll, Montgomery	65 min
Apr 20, 6:57 PM CDT	Severe Thunderstorm Warning	JAN	Attala, Carroll, Montgomery	48 min
Apr 20, 6:59 PM CDT	Severe Thunderstorm Warning	JAN	Grenada	46 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.