Alert archive / Mississippi / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 33, NWS Memphis, TN

March 18, 20137 counties in Mississippi

NWS Memphis, TN issued this severe thunderstorm warning at Mar 18, 2013, 1:17 PM CDT for 7 counties in Mississippi. It was in force for 43 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Mar 18, 2013, 1:17 PM CDT (18:17 UTC)
Expired
Mar 18, 2013, 2:00 PM CDT
In force
43 min
Issued by
NWS Memphis, TN
Area
Storm-based polygon

Counties Alcorn County, MS, Itawamba County, MS, Lee County, MS, Pontotoc County, MS, Prentiss County, MS, Tishomingo County, MS, Union County, MS

The radar

The Columbus AFB radar (KGWX), 73 km from the middle of the area, began a volume at 18:20 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.

The watch it was issued in

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

IssuedProductOfficeLasted
Mar 18, 8:09 AM CDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Little Rock, AR (KLZK), launched 12:00Z, 6.3 hours before the alert went out and 126 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-pSkew-T log-p diagram, Little Rock, AR at 12:00Z on 2013-03-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 11 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Little Rock, AR at 12:00Z on 2013-03-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 227 square meters per square second.1939587897117Sfc1 km3 km6 km9 kmRMLM
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
11 J/kg
Mixed-layer CIN
-390 J/kg
Mixed-layer LCL
432 m above ground
0-6 km bulk shear
54 kt
0-1 km storm-relative helicity
227 m²/s²
0-3 km storm-relative helicity
210 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.2

Open this sounding in Storm Lab

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 Mar 18, 12:47 PM CDT, 30 minutes earlier.

Area forecast discussion, Mar 18, 12:47 PM CDT, 30 minutes before
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Hazardous weather outlook, Mar 18, 9:56 AM CDT, 3 hours 21 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE MEMPHIS TN
956 AM CDT MON MAR 18 2013

ARZ008-009-017-018-026>028-035-036-048-049-058-MOZ113-115-
MSZ001>017-020>024-TNZ001>004-019>021-048>055-088>092-191700-
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-
956 AM CDT MON MAR 18 2013

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

.DAY ONE...TODAY AND TONIGHT

THERE IS A SLIGHT RISK FOR SEVERE THUNDERSTORMS ACROSS PORTIONS OF
WEST TENNESSEE NEAR THE TENNESSEE RIVER AND MUCH OF NORTHERN
MISSISSIPPI. LARGE HAIL AND DAMAGING WINDS REMAIN THE PRIMARY
SEVERE WEATHER THREATS. THE SEVERE WEATHER THREAT WILL COME TO AN
END THIS EVENING AS A COLD FRONT MOVES EAST OF THE FORECAST AREA.

STRONG STORMS WITH SMALL HAIL WILL BE POSSIBLE FURTHER NORTH
ACROSS THE REMAINDER OF THE MID SOUTH.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL BE NEEDED TODAY ACROSS THE SLIGHT RISK
AREA. PLEASE REPORT ANY LARGE HAIL OR WIND DAMAGE TO THE NATIONAL
WEATHER SERVICE OFFICE IN MEMPHIS TENNESSEE.

JLH

In the hours before

Special weather statement, Mar 18, 11:39 AM CDT, 1 hour 38 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MEMPHIS TN
1139 AM CDT MON MAR 18 2013

TNZ049-088-089-181715-
SHELBY TN-FAYETTE TN-TIPTON TN-
1139 AM CDT MON MAR 18 2013

...THE NATIONAL WEATHER SERVICE IN MEMPHIS HAS ISSUED A SIGNIFICANT
WEATHER ADVISORY UNTIL 1215 PM CDT FOR...

  NORTHWESTERN FAYETTE COUNTY IN SOUTHWEST TENNESSEE...
  NORTHEASTERN SHELBY COUNTY IN SOUTHWEST TENNESSEE...
  SOUTH CENTRAL TIPTON COUNTY IN SOUTHWEST TENNESSEE...

A STRONG THUNDERSTORM PRODUCING PEA SIZE HAIL OR LARGER WAS LOCATED 5
MILES SOUTHWEST OF MILLINGTON AT 1140 AM CDT...MOVING EAST AT 45 MPH.

VERY HEAVY RAIN ALONG WITH CONTINUOUS CLOUD TO GROUND LIGHTNING WILL
OCCUR WITH THIS  THUNDERSTORM.

PEOPLE IN FAYETTE...SHELBY AND TIPTON COUNTIES...INCLUDING LOCATIONS
NEAR BARTLETT AND MILLINGTON...SHOULD MONITOR THIS STORM CLOSELY.

&&

LAT...LON 3549 8955 3523 8954 3520 9001 3535 9004
TIME...MOT...LOC 1640Z 260DEG 37KT 3529 8990
Special weather statement, Mar 18, 11:42 AM CDT, 1 hour 35 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MEMPHIS TN
1142 AM CDT MON MAR 18 2013

MSZ001-002-TNZ088-089-181715-
MARSHALL MS-DE SOTO MS-SHELBY TN-FAYETTE TN-
1142 AM CDT MON MAR 18 2013

...THE NATIONAL WEATHER SERVICE IN MEMPHIS HAS ISSUED A SIGNIFICANT
WEATHER ADVISORY UNTIL 1215 PM CDT FOR...

  EASTERN DESOTO COUNTY IN NORTHWEST MISSISSIPPI...
  NORTHWESTERN MARSHALL COUNTY IN NORTHWEST MISSISSIPPI...
  SOUTHWESTERN FAYETTE COUNTY IN SOUTHWEST TENNESSEE...
  SOUTHEASTERN SHELBY COUNTY IN SOUTHWEST TENNESSEE...

A STRONG THUNDERSTORM PRODUCING PEA SIZE HAIL OR LARGER WAS LOCATED 6
MILES SOUTHWEST OF OLIVE BRANCH AT 1142 AM CDT...MOVING EAST AT 45
MPH.

VERY HEAVY RAIN ALONG WITH CONTINUOUS CLOUD TO GROUND LIGHTNING WILL
OCCUR WITH THIS  THUNDERSTORM.

PEOPLE IN DESOTO...FAYETTE...MARSHALL AND SHELBY COUNTIES...INCLUDING
LOCATIONS NEAR COLLIERVILLE...HERNANDO...HORN LAKE...OLIVE BRANCH AND
SOUTHAVEN...SHOULD MONITOR THIS STORM CLOSELY.

&&

LAT...LON 3509 8959 3479 8955 3477 8998 3500 9005
TIME...MOT...LOC 1642Z 255DEG 38KT 3491 8990
Special weather statement, Mar 18, 12:03 PM CDT, 1 hour 14 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MEMPHIS TN
1203 PM CDT MON MAR 18 2013

MSZ002-003-TNZ089-090-181730-
BENTON MS-MARSHALL MS-FAYETTE TN-HARDEMAN TN-
1203 PM CDT MON MAR 18 2013

...THE NATIONAL WEATHER SERVICE IN MEMPHIS HAS ISSUED A SIGNIFICANT
WEATHER ADVISORY UNTIL 1230 PM CDT FOR...

  NORTHERN BENTON COUNTY IN NORTHEAST MISSISSIPPI...
  NORTH CENTRAL MARSHALL COUNTY IN NORTHWEST MISSISSIPPI...
  SOUTHEASTERN FAYETTE COUNTY IN SOUTHWEST TENNESSEE...
  SOUTHWESTERN HARDEMAN COUNTY IN SOUTHWEST TENNESSEE...

A STRONG THUNDERSTORM PRODUCING PEA SIZE HAIL OR LARGER WAS LOCATED
OVER MT PLEASANT AT 1203 PM CDT...MOVING EAST AT 50 MPH.

VERY HEAVY RAIN ALONG WITH CONTINUOUS CLOUD TO GROUND LIGHTNING WILL
OCCUR WITH THIS  THUNDERSTORM.

PEOPLE IN BENTON...FAYETTE...HARDEMAN AND MARSHALL COUNTIES SHOULD
MONITOR THIS STORM CLOSELY.

&&

LAT...LON 3481 8956 3500 8962 3516 8909 3490 8901
      3489 8902
TIME...MOT...LOC 1703Z 256DEG 50KT 3493 8947
Special weather statement, Mar 18, 12:34 PM CDT, 43 minutes before
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Special weather statement, Mar 18, 12:44 PM CDT, 33 minutes before
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Special weather statement, Mar 18, 1:06 PM CDT, 11 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Mar 18, 8:18 AM CDTSpecial Weather StatementMEGHardeman27 min
Mar 18, 8:34 AM CDTRiver Flood WarningMEGCrockett, Dyer, Lauderdale51 hr
Mar 18, 9:05 AM CDTSpecial Weather StatementMEGHardin40 min
Mar 18, 9:21 AM CDTSpecial Weather StatementMEGShelby24 min
Mar 18, 9:47 AM CDTSpecial Weather StatementMEGFayette28 min
Mar 18, 11:04 AM CDTSpecial Weather StatementMEGShelby26 min
Mar 18, 11:39 AM CDTSpecial Weather StatementMEGTipton36 min
Mar 18, 12:44 PM CDTSpecial Weather StatementMEGMcNairy46 min
Mar 17, 10:56 PM CDTSpecial Weather StatementMEGCoahoma34 min
Mar 18, 10:24 AM CDTSpecial Weather StatementMEGItawamba, Lee36 min
Mar 18, 10:42 AM CDTSevere Thunderstorm WarningMEGTunica48 min
Mar 18, 11:10 AM CDTSevere Thunderstorm WarningMEGDeSoto, Tate, Tunica50 min
Mar 18, 11:42 AM CDTSpecial Weather StatementMEGDeSoto33 min
Mar 18, 12:03 PM CDTSpecial Weather StatementMEGBenton27 min
Mar 18, 12:34 PM CDTSpecial Weather StatementMEGItawamba41 min
Mar 18, 1:06 PM CDTSpecial Weather StatementMEGCalhoun, Chickasaw, Lee, Pontotoc24 min
Mar 18, 1:14 PM CDTSevere Thunderstorm WarningMEGCalhoun, Chickasaw, Itawamba, Lee, Monroe, Pontotoc46 min
Mar 18, 1:23 PM CDTSevere Thunderstorm WarningMEGItawamba37 min
Mar 18, 1:36 PM CDTSevere Thunderstorm WarningMEGChickasaw, Itawamba, Lee, Monroe39 min
Mar 18, 2:37 AM CDTSpecial Weather StatementMEGCrittenden23 min
Mar 18, 8:14 AM CDTSpecial Weather StatementMEGSt. Francis31 min
Mar 18, 8:57 AM CDTSpecial Weather StatementMEGCrittenden33 min
Mar 18, 9:27 AM CDTSpecial Weather StatementMEGCrittenden33 min
Mar 18, 10:07 AM CDTSpecial Weather StatementMEGLee, St. Francis23 min
Mar 18, 10:21 AM CDTSevere Thunderstorm WarningMEGLee24 min

Nearby

Severe Thunderstorm Warnings in Mississippi, 2013Every severe thunderstorm warning in 2013

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; radar from the NEXRAD Level II archive.