Alert archive / Mississippi / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 307, NWS Jackson, MS

April 27, 2011Bolivar County, Mississippi; Chicot County, Arkansas

NWS Jackson, MS issued this severe thunderstorm warning at Apr 27, 2011, 11:22 AM CDT for Bolivar County, Mississippi; Chicot County, Arkansas. 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 27, 2011, 11:22 AM CDT (16:22 UTC)
Expired: Apr 27, 2011, 12:15 PM CDT
In force: 53 min
Issued by: NWS Jackson, MS
Area: Storm-based polygon

Counties Chicot County, AR, Bolivar County, MS

The radar

The Little Rock radar (KLZK), 167 km from the middle of the area, began a volume at 16:24 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 27, 11:26 AM CDT	TSTM WND DMG	Dermott, AR	NUMEROUS TREES AND POWERLINES DOWN ACROSS TOWN. HIGHWAY 35 WEST CLOSED OFF DUE TO TREES AND POWERLINES BLOCKING TRAFFIC.
Apr 27, 12:19 PM CDT	HAIL 1	Mound Bayou, MS

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 4 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 27, 11:02 AM CDT	Tornado Watch PDS	SPC	8 hr

The nearest sounding before it

Little Rock, AR (KLZK), launched 12:00Z, 4.4 hours before the alert went out and 167 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: 582 J/kg
Mixed-layer CIN: -107 J/kg
Mixed-layer LCL: 470 m above ground
0-6 km bulk shear: 91 kt
0-1 km storm-relative helicity: 261 m²/s²
0-3 km storm-relative helicity: 228 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.1

Open this sounding in Storm Lab

The text

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

857 
WUUS54 KJAN 271622
SVRJAN
ARC017-MSC011-271715-
/O.NEW.KJAN.SV.W.0307.110427T1622Z-110427T1715Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE JACKSON MS
1122 AM CDT WED APR 27 2011

THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  BOLIVAR COUNTY IN NORTHWEST MISSISSIPPI...
  THIS INCLUDES THE CITIES OF...SHELBY...ROSEDALE...
  NORTHWESTERN CHICOT COUNTY IN SOUTHEAST ARKANSAS...
  THIS INCLUDES THE CITY OF DERMOTT...

* UNTIL 1215 PM CDT

* AT 1122 AM 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
  DERMOTT MOVING NORTHEAST AT 60 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  SCOTT...BENOIT...RENOVA AND MOUND BAYOU

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 TORNADO WATCH REMAINS IN EFFECT UNTIL 700 PM CDT WEDNESDAY EVENING 
FOR SOUTHEAST ARKANSAS AND NORTHEAST LOUISIANA AND MISSISSIPPI.

&&

LAT...LON 3380 9065 3353 9115 3354 9120 3352 9118
      3337 9145 3356 9145 3356 9135 3352 9126
      3359 9122 3360 9116 3369 9122 3372 9121
      3367 9109 3368 9104 3371 9105 3372 9114
      3378 9114 3377 9100 3386 9104 3408 9067
TIME...MOT...LOC 1622Z 234DEG 54KT 3350 9143

$$

GRG

3 follow-up statements

032 
WWUS54 KJAN 271635
SVSJAN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
1135 AM CDT WED APR 27 2011

ARC017-MSC011-271715-
/O.CON.KJAN.SV.W.0307.000000T0000Z-110427T1715Z/
CHICOT AR-BOLIVAR MS-
1135 AM CDT WED APR 27 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1215 PM CDT
FOR BOLIVAR AND NORTHWESTERN CHICOT COUNTIES...

AT 1135 AM 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 11 MILES EAST OF DERMOTT MOVING NORTHEAST AT 60 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
SCOTT...BENOIT...BEULAH...ROSEDALE...PACE...RENOVA...MERIGOLD...MOUND
BAYOU...WINSTONVILLE AND SHELBY

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 TORNADO WATCH REMAINS IN EFFECT UNTIL 700 PM CDT WEDNESDAY EVENING 
FOR SOUTHEAST ARKANSAS AND NORTHEAST LOUISIANA AND MISSISSIPPI. 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 3380 9065 3353 9115 3354 9120 3352 9118
      3337 9145 3356 9145 3356 9135 3352 9126
      3359 9122 3360 9116 3369 9122 3372 9121
      3367 9109 3368 9104 3371 9105 3372 9114
      3378 9114 3377 9100 3386 9104 3408 9067
TIME...MOT...LOC 1635Z 234DEG 54KT 3360 9125

$$

GRG

688 
WWUS54 KJAN 271641
SVSJAN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
1141 AM CDT WED APR 27 2011

ARC017-271651-
/O.CAN.KJAN.SV.W.0307.000000T0000Z-110427T1715Z/
CHICOT AR-
1141 AM CDT WED APR 27 2011

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN CHICOT COUNTY IS
CANCELLED...

A TORNADO WATCH REMAINS IN EFFECT UNTIL 700 PM CDT WEDNESDAY EVENING
FOR SOUTHEAST ARKANSAS AND NORTHEAST LOUISIANA AND MISSISSIPPI.

LAT...LON 3382 9065 3354 9114 3354 9121 3357 9123
      3359 9122 3359 9117 3364 9116 3367 9121
      3371 9122 3367 9109 3368 9105 3368 9104
      3371 9105 3372 9114 3378 9114 3377 9100
      3387 9103 3408 9067
TIME...MOT...LOC 1641Z 234DEG 54KT 3365 9116

$$

MSC011-271715-
/O.CON.KJAN.SV.W.0307.000000T0000Z-110427T1715Z/
BOLIVAR MS-
1141 AM CDT WED APR 27 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1215 PM CDT
FOR BOLIVAR COUNTY...

AT 1141 AM 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 8 MILES WEST OF SCOTT MOVING NORTHEAST AT 60 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
BENOIT...BEULAH...ROSEDALE...PACE...RENOVA...MERIGOLD...MOUND
BAYOU...WINSTONVILLE AND SHELBY

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 TORNADO WATCH REMAINS IN EFFECT UNTIL 700 PM CDT WEDNESDAY EVENING 
FOR SOUTHEAST ARKANSAS AND NORTHEAST LOUISIANA AND MISSISSIPPI. 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 3382 9065 3354 9114 3354 9121 3357 9123
      3359 9122 3359 9117 3364 9116 3367 9121
      3371 9122 3367 9109 3368 9105 3368 9104
      3371 9105 3372 9114 3378 9114 3377 9100
      3387 9103 3408 9067
TIME...MOT...LOC 1641Z 234DEG 54KT 3365 9116

$$

GRG

959 
WWUS54 KJAN 271701
SVSJAN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
1201 PM CDT WED APR 27 2011

MSC011-271715-
/O.CON.KJAN.SV.W.0307.000000T0000Z-110427T1715Z/
BOLIVAR MS-
1201 PM CDT WED APR 27 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1215 PM CDT
FOR BOLIVAR COUNTY...

AT 1201 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE
TRACKING A SEVERE THUNDERSTORM CAPABLE OF PRODUCING PING PONG BALL
SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS
LOCATED NEAR BENOIT MOVING NORTHEAST AT 50 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
BEULAH...PACE...WINSTONVILLE...SHELBY...MOUND BAYOU AND MERIGOLD

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.

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.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 700 PM CDT WEDNESDAY EVENING 
FOR SOUTHEAST ARKANSAS AND NORTHEAST LOUISIANA AND MISSISSIPPI. 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 3382 9065 3354 9114 3354 9121 3357 9123
      3359 9122 3359 9117 3364 9116 3367 9121
      3371 9122 3367 9109 3368 9105 3368 9104
      3371 9105 3372 9114 3378 9114 3377 9100
      3387 9103 3408 9067
TIME...MOT...LOC 1701Z 242DEG 42KT 3371 9097

$$

GRG

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 27, 10:51 AM CDT, 31 minutes earlier.

Area forecast discussion, Apr 27, 10:51 AM CDT, 31 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE JACKSON MS
1051 AM CDT WED APR 27 2011

...SIGNIFICANT SEVERE STORMS AND TORNADO OUTBREAK EXPECTED THIS
AFTERNOON...

.UPDATE...NOT MUCH HAS CHANGED WITH OUR THINKING AND THE OVERALL
EVOLUTION FOR TODAY. HOWEVER...THE DETAILS ARE BECOMING A BIT MORE
CLEAR BASED OFF LATEST HI-RES MODELS AND TRENDS WITH RADAR AND SAT
IMAGERY.

A VOLATILE SITUATION IS DEVELOPING WHICH LOOKS TO SUPPORT SEVERAL
SUPERCELL STORMS MOVING ACROSS THE CWA FROM LATE MORNING AND DURING
THE AFTERNOON. THE COMBINATION OF INSTABILITY AND LOW LEVEL SHEAR IS
OFF THE CHART AND AT LEVELS RARELY SEEN. EFFECTIVE SRH VALUES ARE
CURRENTLY 600-900 M2/S2 AND FORECAST TO REMAIN VERY HIGH AND WILL
LIKELY HOLD IN THE 300-600 M2/S2 RANGE IF NOT HIGHER. INSTABILITY
WILL BE QUITE HIGH AS WELL AND EXCEED 2500-3000 J/KG IF DEWPTS HOLD
AROUND 70. FORCING WILL BE INTENSE AND THERE WILL BE SOME CAPPING
MOVING IN FROM THE SW. THIS SHOULD KEEP CELLS DISCRETE AND
SUPERCELLULAR TODAY. DEEP LAYER SHEAR IS PUSHING 80 KTS AND COULD GET
HIGHER AS A 100KT MID LEVEL JET CORE PUNCHES INTO THE REGION IN A FEW
HRS.

EVOLVING SUPERCELLS IS THIS EXTREME ENVIRONMENT IS BAD NEWS. THERE
WILL LIKELY BE SEVERAL STRONG TORNADOES WITH A VIOLENT TORNADO
POSSIBLE. CURRENT SIGTOR PARAMETERS (10-12) AND 0-1KM EHI VALUES (9-12)
ARE EXTREME ABOUT AS CLASSIC AND SIGNIFICANT OF A SETUP AS THEY COME.
STORMS WILL MOVE QUICKLY NE IN THE FAST DEEP LAYER FLOW AND STORMS
SHOULD AVG 50-60 MPH. THIS SETUP WILL ALSO SUPPORT LONG LIVED
SUPERCELLS AND LONG TRACKED TORNADOES. I CAN'T STRESS ENOUGH HOW
DANGEROUS A SITUATION THIS APPEARS. OUR SAVING GRACE WOULD BE IF
STORM MODE SOME HOW BECOMES MORE LINEAR...BUT ALL HI-RES GUID
SUPPORTS DISCRETE CELLS. IN ADDITION TO TORNADOES...VERY LARGE HAIL
WILL BE POSSIBLE ALONG WITH DMG WINDS OF 60-80 MPH.

TIMING WILL BE FROM NOON TO 7 PM WITH A STEADY EASTWARD PROGRESSION
TO THE ACTIVITY DURING THE AFTERNOON. BASED OFF STORM
INITIATION...MESOCYCLONE MATURITY...AND STORM PROPAGATION...THE AREA
AT GREATEST RISK FOR STRONG/VIOLENT TORNADOES LOOKS TO EXIST WITHIN A
ZONE FROM GREENWOOD TO VICKSBURG TO LAUREL AND POINTS E/N OF THAT
LINE. AREAS OUTSIDE THAT WILL HAVE THE POTENTIAL FOR HIGH END SVR
STORMS AS WELL...BUT THAT AREA HAS THE GREATEST OVERLAP OF ALL
PARAMETERS.

OUTSIDE THE SVR STORMS...FLASH FLOODING IS STILL A POSSIBILITY ACROSS
THE NORTH. RAINFALL FROM LAST NIGHTS COMPLEX HAS SET THE STAGE AND
ANY ADDITIONAL ACTIVITY TODAY COULD CAUSE FLOODING ISSUES IF TRAINING
OCCURS. AS THE AREA WARMS THIS MORNING...VERY STRONG WINDS WILL MIX
DOWN AND CAUSE WINDY CONDITIONS...GUSTS TO 30-40 MPH WILL BE
POSSIBLE. AS THE DRY LINE ENTERS THE W/NW...WINDS COULD POTENTIALLY
GET STRONGER AND GUST TO 50 MPH. /CME/

&&

.AVIATION...DANGEROUS FLYING WEATHER IS EXPECTED OVER THE NEXT 12-18
HOURS AS ANOTHER ROUND OF SEVERE TSRA(LARGE HAIL/SEVERE TURBULENCE/
WIND SHEAR)IMPACT THE ARKLAMISS.  SCATTERED TO NUMEROUS TSRA WILL
BEGIN IMPACTING THE REGION 17-21Z AS A FRONTAL BOUNDARY CROSSES LA
AND MOVES INTO WRN MS BY 00Z FROM THE WEST. PREVAILING VFR
CONDITIONS WILL PERSIST OUTSIDE OF CONVECTION WITH GUSTY S WINDS OF
20-35KTS THIS AFTN INTO THIS EVENING UNTIL THE FROPA WHEN WNW FLOW
TAKES OVER AND WINDS DIMINISH TO 10-25KTS. DRYING AIR MASS LATER
TONIGHT WILL LEAD TO A COUPLE OF VFR CLEAR DAYS TO FOLLOW./40/

&&

.PRELIMINARY POINT TEMPS/POPS...
JACKSON       84  52  73  48 /  51  14   0   0
MERIDIAN      84  54  76  44 /  53  41   0   0
VICKSBURG     84  51  74  44 /  42  12   0   0
HATTIESBURG   85  56  77  46 /  31  20   0   0
NATCHEZ       85  49  72  47 /  42  10   0   0
GREENVILLE    84  52  73  49 /  72  12   0   0
GREENWOOD     84  51  73  49 /  71  13   0   0

&&

.JAN WATCHES/WARNINGS/ADVISORIES...
MS...FLASH FLOOD WATCH UNTIL 4 PM CDT THIS AFTERNOON FOR MSZ018-019-
     025>044-047>049.

     WIND ADVISORY UNTIL 7 PM CDT THIS EVENING FOR MSZ018-019-025>066-
     072>074.

LA...FLASH FLOOD WATCH UNTIL 4 PM CDT THIS AFTERNOON FOR LAZ007>009-
     015-016-023-025.

     WIND ADVISORY UNTIL 7 PM CDT THIS EVENING FOR LAZ007>009-015-016-
     023>026.

AR...FLASH FLOOD WATCH UNTIL 4 PM CDT THIS AFTERNOON FOR ARZ074-075.

     WIND ADVISORY UNTIL 7 PM CDT THIS EVENING FOR ARZ074-075.

&&

CME/40

Hazardous weather outlook, Apr 27, 11:22 AM CDT, 0 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE JACKSON MS
1122 AM CDT WED APR 27 2011

ARZ074-075-LAZ007>009-015-016-023>026-MSZ018-019-025>066-072>074-
281630-
ASHLEY-CHICOT-MOREHOUSE-WEST CARROLL-EAST CARROLL-RICHLAND-
MADISON LA-FRANKLIN LA-CATAHOULA-TENSAS-CONCORDIA-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-JEFFERSON-ADAMS-FRANKLIN MS-LINCOLN-
LAWRENCE-JEFFERSON DAVIS-COVINGTON-JONES-MARION-LAMAR-FORREST-
1122 AM CDT WED APR 27 2011

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

.DAY ONE...TONIGHT AND THURSDAY

THE POTENTIAL FOR AN OUTBREAK OF SIGNIFICANT SEVERE STORMS AND
TORNADOES APPEARS LIKELY THIS AFTERNOON ACROSS THE ENTIRE AREA.
LARGE HAIL TO THE SIZE OF GOLF BALLS OR LARGER AND DAMAGING WIND
GUSTS FROM 60 TO 80 MPH WILL BE POSSIBLE ALONG WITH THE POTENTIAL FOR
LONG TRACK...STRONG TO VIOLENT TORNADOES. THE AREA WITH THE GREATEST
RISK OF STRONG TO VIOLENT TORNADOES WILL BE EAST AND NORTH OF A LINE
FROM GREENWOOD TO VICKSBURG TO LAUREL MS. THE TIMING APPEARS TO BE
FROM NOON TO 7PM WITH A STEADY EASTWARD PROGRESSION OF THE ACTIVITY
ACROSS THE AREA THROUGH THE AFTERNOON HOURS.

THIS IS A VERY DANGEROUS SITUATION SO PLEASE CONTINUE TO MONITOR THE
LATEST WATCHES AND WARNINGS FROM THE NATIONAL WEATHER SERVICE.

.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...WILL BE NEEDED TODAY.

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

15

In the hours before

Local storm report, Apr 27, 9:50 AM CDT, 1 hour 32 minutes before

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE JACKSON MS
950 AM CDT WED APR 27 2011

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

0235 AM     TORNADO          5 SSW EUPORA            33.48N 89.31W
04/27/2011                   CHOCTAW            MS   EMERGENCY MNGR

            *** 1 FATAL, 7 INJ *** UPDATE...EMERGENCY MANAGER
            CONFIRMS 1 FATALITY IN A CAMPER AT A STATE PARK.
            EXTENSIVE DAMAGE REPORTED IN THE AREA OF CHOCTAW COUNTY
            NEAR THE BORDER WITH WEBSTER COUNTY. MANY TREES DOWN
            ACROSS ROADS AND ON TOPS OF HOUSES. MOBILE HOMES
            DESTROYED AND SOME HOMES DAMAGED...ESPECIALLY ALONG
            HEBRON ROAD. AT LEAST 7 INJURIES REPORTED...AND DAMAGE
            AND INJURY REPORTS STILL COMING IN.

&&

Local storm report, Apr 27, 9:54 AM CDT, 1 hour 28 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON MS
954 AM CDT WED APR 27 2011

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

0310 AM     TSTM WND DMG     CARTHAGE                32.74N 89.53W
04/27/2011                   LEAKE              MS   EMERGENCY MNGR

            3 BUSINESSES IN CARTHAGE WITH ROOF DAMAGE...2 HOUSES IN
            THE CITY WITH TREES ON THEM. POWER WAS OUT IN THE CITY
            FOR A SHORT TIME.

&&

BK

Local storm report, Apr 27, 10:07 AM CDT, 1 hour 15 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON MS
1007 AM CDT WED APR 27 2011

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

0413 AM     TSTM WND DMG     SCOOBA                  32.83N 88.48W
04/27/2011                   KEMPER             MS   EMERGENCY MNGR

            MINOR DAMAGE TO A HOUSE

&&

Local storm report, Apr 27, 10:09 AM CDT, 1 hour 13 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON MS
1009 AM CDT WED APR 27 2011

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

0555 AM     TSTM WND DMG     3 W AFTON               32.24N 91.24W
04/27/2011                   MADISON            LA   EMERGENCY MNGR

            TREES AND POWER LINES DOWN IN THE AREA. TREES AND
            POWERLINES ALSO DOWN NEAR TALLULAH NEAR THE SAME TIME.

&&

BK

Local storm report, Apr 27, 10:32 AM CDT, 50 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON MS
1032 AM CDT WED APR 27 2011

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

0225 AM     TSTM WND DMG     FLORA                   32.55N 90.31W
04/27/2011                   MADISON            MS   EMERGENCY MNGR

            NUMEROUS TREES DOWN ACROSS THE COUNTY. MANY TREES FELL
            ACROSS ROADS AND POWER LINES. ONE TREE FELL ON A HOUSE IN
            FLORA.

&&

Special weather statement, Apr 27, 11:06 AM CDT, 16 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
1106 AM CDT WED APR 27 2011

ARZ074-075-LAZ007-MSZ018-034-271635-
ASHLEY AR-CHICOT AR-MOREHOUSE LA-BOLIVAR MS-WASHINGTON MS-
1106 AM CDT WED APR 27 2011

...A LINE OF DEVELOPING STORMS APPROACHING THE DELTA AREA...

A LINE OF STRONG THUNDERSTORMS WAS STEADILY INCREASING OVER
SOUTHEAST ARKANSAS AND NORTH LOUISIANA. THESE STORMS WILL BE CAPABLE
OF PRODUCING 40 TO 50 MPH WINDS WAS LOCATED FROM 14 MILES NORTHWEST
OF ROSEDALE TO 13 MILES WEST OF BEEKMAN AT 1104 AM CDT...MOVING EAST
AT 35 MPH. THESE STORMS COULD BECOME SEVERE THROUGH THE MIDDAY HOURS
AND WARNINGS MAY BE NEEDED.

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 NORTHWESTERN WASHINGTON...BOLIVAR...CHICOT AND ASHLEY
COUNTIES...AND NORTHERN MOREHOUSE PARISH SHOULD MONITOR THESE STORMS
CLOSELY.

LAT...LON 3355 9080 3320 9108 3281 9165 3280 9205
      3303 9208 3340 9177 3340 9146 3357 9144
      3352 9126 3360 9116 3372 9121 3368 9104
      3378 9115 3379 9099 3400 9110 3397 9097
      3409 9088 3412 9093 3412 9066
TIME...MOT...LOC 1604Z 263DEG 32KT 3394 9123 3288 9209

40

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 26, 8:55 PM CDT	River Flood Warning	JAN	Yazoo	47 days
Apr 26, 9:03 PM CDT	River Flood Warning	JAN	Clay	37 hr
Apr 26, 11:27 PM CDT	Flash Flood Warning	JAN	Bolivar, Washington	2 hr
Apr 26, 11:41 PM CDT	Severe Thunderstorm Warning	JAN	Bolivar, Humphreys, Issaquena, Sharkey, Sunflower, Washington	64 min
Apr 26, 11:44 PM CDT	Tornado Warning	JAN	Bolivar, Washington	61 min
Apr 26, 11:46 PM CDT	Tornado Warning	JAN	Issaquena, Sharkey, Washington	59 min
Apr 26, 11:59 PM CDT	Severe Thunderstorm Warning	JAN	Issaquena	46 min
Apr 27, 12:08 AM CDT	Tornado Warning	JAN	Issaquena, Sharkey	67 min
Apr 27, 12:27 AM CDT	Tornado Warning	JAN	Humphreys, Sunflower, Washington	48 min
Apr 27, 12:34 AM CDT	Flash Flood Warning	JAN	Warren	116 min
Apr 27, 12:36 AM CDT	Severe Thunderstorm Warning	JAN	Issaquena, Warren	54 min
Apr 27, 12:53 AM CDT	Tornado Warning	JAN	Holmes, Humphreys, Sharkey, Yazoo	52 min
Apr 27, 12:58 AM CDT	Tornado Warning	JAN	Carroll, Grenada, Holmes, Humphreys, Leflore	47 min
Apr 27, 1:00 AM CDT	Severe Thunderstorm Warning	JAN	Hinds, Madison, Sharkey, Yazoo	60 min
Apr 27, 1:27 AM CDT	Severe Thunderstorm Warning	JAN	Issaquena, Sharkey, Warren	63 min
Apr 27, 1:36 AM CDT	Severe Thunderstorm Warning	JAN	Attala, Carroll, Choctaw, Holmes, Leake, Madison and 1 more	54 min
Apr 27, 1:38 AM CDT	Severe Thunderstorm Warning	JAN	Carroll, Grenada, Holmes, Montgomery	67 min
Apr 27, 1:41 AM CDT	Tornado Warning	JAN	Attala, Carroll, Holmes	37 min
Apr 27, 1:47 AM CDT	Tornado Warning	JAN	Attala, Holmes	43 min
Apr 27, 1:55 AM CDT	Severe Thunderstorm Warning	JAN	Yazoo	65 min
Apr 27, 1:58 AM CDT	Tornado Warning	JAN	Adams, Claiborne, Jefferson	47 min
Apr 27, 2:16 AM CDT	Tornado Warning	JAN	Choctaw, Montgomery, Webster	29 min
Apr 27, 2:20 AM CDT	Tornado Warning	JAN	Attala, Choctaw, Winston	40 min
Apr 27, 2:27 AM CDT	Severe Thunderstorm Warning	JAN	Leake, Neshoba, Winston	63 min
Apr 27, 2:29 AM CDT	Severe Thunderstorm Warning	JAN	Claiborne, Hinds, Madison, Rankin, Warren	46 min
Apr 27, 2:36 AM CDT	Severe Thunderstorm Warning	JAN	Attala, Holmes, Leake, Madison, Yazoo	54 min
Apr 27, 2:38 AM CDT	Tornado Warning	JAN	Choctaw, Clay, Oktibbeha, Webster	40 min
Apr 27, 2:42 AM CDT	Severe Thunderstorm Warning	JAN	Adams, Claiborne, Jefferson	48 min
Apr 27, 2:53 AM CDT	Tornado Warning	JAN	Noxubee, Oktibbeha, Winston	37 min
Apr 27, 3:04 AM CDT	Severe Thunderstorm Warning	JAN	Hinds, Leake, Madison, Neshoba, Newton, Rankin and 2 more	41 min
Apr 27, 3:05 AM CDT	Severe Thunderstorm Warning	JAN	Lowndes, Noxubee	55 min
Apr 27, 3:11 AM CDT	Tornado Warning	JAN	Clay, Lowndes, Oktibbeha	49 min
Apr 27, 3:14 AM CDT	Severe Thunderstorm Warning	JAN	Claiborne, Copiah, Jefferson, Simpson	61 min
Apr 27, 3:17 AM CDT	Severe Thunderstorm Warning	JAN	Clay, Lowndes, Oktibbeha	17 min
Apr 27, 3:19 AM CDT	Severe Thunderstorm Warning	JAN	Choctaw, Kemper, Neshoba, Oktibbeha, Winston	41 min
Apr 27, 3:22 AM CDT	Severe Thunderstorm Warning	JAN	Choctaw, Kemper, Neshoba, Winston	38 min
Apr 27, 3:29 AM CDT	Tornado Warning	JAN	Lowndes	31 min
Apr 27, 3:30 AM CDT	Severe Thunderstorm Warning	JAN	Adams, Claiborne, Jefferson	45 min
Apr 27, 3:41 AM CDT	Tornado Warning	JAN	Noxubee, Winston	49 min
Apr 27, 3:46 AM CDT	Severe Thunderstorm Warning	JAN	Clarke, Jasper, Kemper, Lauderdale, Neshoba, Newton and 2 more	44 min
Apr 27, 4:03 AM CDT	Tornado Warning	JAN	Kemper, Noxubee	27 min
Apr 27, 4:15 AM CDT	Severe Thunderstorm Warning	JAN	Claiborne, Copiah, Hinds	45 min
Apr 27, 4:28 AM CDT	Severe Thunderstorm Warning	JAN	Kemper, Lauderdale	32 min
Apr 27, 4:54 AM CDT	Special Weather Statement	JAN	Rankin	31 min
Apr 27, 5:00 AM CDT	Special Weather Statement	JAN	Bolivar, Sunflower	30 min
Apr 27, 5:24 AM CDT	Special Weather Statement	JAN	Yazoo	31 min
Apr 27, 5:38 AM CDT	Special Weather Statement	JAN	Bolivar	27 min
Apr 27, 5:40 AM CDT	Severe Thunderstorm Warning	JAN	Warren	36 min
Apr 27, 5:45 AM CDT	Severe Thunderstorm Warning	JAN	Issaquena, Sharkey, Yazoo	32 min
Apr 27, 6:33 AM CDT	Special Weather Statement	JAN	Warren	27 min
Apr 27, 7:03 AM CDT	Severe Thunderstorm Warning	JAN	Bolivar	42 min
Apr 27, 7:06 AM CDT	Special Weather Statement	JAN	Clay	29 min
Apr 27, 7:23 AM CDT	Severe Thunderstorm Warning	JAN	Clay	9 min
Apr 27, 7:38 AM CDT	Severe Thunderstorm Warning	JAN	Bolivar, Sunflower	52 min
Apr 27, 7:47 AM CDT	Flash Flood Warning	JAN	Bolivar, Sunflower	3 hr
Apr 27, 9:11 AM CDT	River Flood Warning	JAN	Neshoba	71 hr
Apr 27, 9:25 AM CDT	Special Weather Statement	JAN	Bolivar, Sunflower, Washington	60 min
Apr 27, 9:32 AM CDT	Special Weather Statement	JAN	Grenada	28 min
Apr 27, 10:57 AM CDT	River Flood Warning	JAN	Noxubee	23 hr
Apr 27, 11:06 AM CDT	Special Weather Statement	JAN	Bolivar	29 min
Apr 27, 11:54 AM CDT	Severe Thunderstorm Warning	JAN	Bolivar	36 min
Apr 27, 12:03 PM CDT	Tornado Warning	JAN	Bolivar, Sunflower	40 min
Apr 27, 12:51 PM CDT	Severe Thunderstorm Warning	JAN	Issaquena, Sharkey, Washington	39 min
Apr 27, 1:06 PM CDT	Severe Thunderstorm Warning	JAN	Humphreys, Leflore, Sunflower	54 min
Apr 27, 1:25 PM CDT	Severe Thunderstorm Warning	JAN	Leake, Rankin, Scott	50 min
Apr 27, 1:34 PM CDT	Severe Thunderstorm Warning	JAN	Claiborne, Jefferson	56 min
Apr 27, 1:36 PM CDT	Tornado Warning	JAN	Leake, Scott	41 min
Apr 27, 1:37 PM CDT	Severe Thunderstorm Warning	JAN	Carroll, Grenada	53 min
Apr 27, 1:57 PM CDT	Severe Thunderstorm Warning	JAN	Carroll, Grenada, Leflore, Montgomery, Webster	63 min
Apr 27, 1:58 PM CDT	Severe Thunderstorm Warning	JAN	Covington, Jefferson Davis	47 min
Apr 27, 2:03 PM CDT	Tornado Warning Emergency	JAN	Neshoba	47 min
Apr 27, 2:03 PM CDT	Tornado Warning	JAN	Claiborne, Jefferson	42 min
Apr 27, 2:04 PM CDT	Tornado Warning	JAN	Carroll, Grenada, Montgomery, Webster	56 min
Apr 27, 2:09 PM CDT	Severe Thunderstorm Warning	JAN	Holmes, Humphreys, Yazoo	51 min
Apr 27, 2:21 PM CDT	Tornado Warning	JAN	Covington, Jasper, Jones, Smith	54 min
Apr 27, 2:32 PM CDT	Tornado Warning Emergency	JAN	Kemper, Noxubee, Winston	58 min
Apr 27, 2:42 PM CDT	Tornado Warning	JAN	Claiborne, Copiah, Hinds	48 min
Apr 27, 2:51 PM CDT	Severe Thunderstorm Warning	JAN	Attala, Carroll, Montgomery	39 min
Apr 27, 2:55 PM CDT	Severe Thunderstorm Warning	JAN	Kemper, Lauderdale, Neshoba, Newton	50 min
Apr 27, 3:06 PM CDT	Tornado Warning	JAN	Carroll, Choctaw, Montgomery, Webster	54 min

Nearby

Severe Thunderstorm Warnings in Mississippi, 2011 Severe Thunderstorm Warnings in Arkansas, 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.