Alert archive / Mississippi / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 628, NWS Jackson, MS

December 20, 2012Forrest County, Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at Dec 20, 2012, 7:12 AM CST for Forrest County, Mississippi. It was in force for 48 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: Dec 20, 2012, 7:12 AM CST (13:12 UTC)
Expired: Dec 20, 2012, 8:00 AM CST
In force: 48 min
Issued by: NWS Jackson, MS
Area: Storm-based polygon

County Forrest County, MS

The radar

The Mobile radar (KMOB), 113 km from the middle of the area, began a volume at 13:14 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.

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
Dec 20, 4:23 AM CST	Tornado Watch	SPC	9 hr

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 1.2 hours before the alert went out and 104 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: 1181 J/kg
Mixed-layer CIN: -4 J/kg
Mixed-layer LCL: 506 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 275 m²/s²
0-3 km storm-relative helicity: 310 m²/s²
Significant tornado parameter: 2.0
Supercell composite: 9.6

Open this sounding in Storm Lab

The text

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

157 
WUUS54 KJAN 201312
SVRJAN
MSC035-201400-
/O.NEW.KJAN.SV.W.0628.121220T1312Z-121220T1400Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE JACKSON MS
712 AM CST THU DEC 20 2012

THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  FORREST COUNTY IN SOUTHEAST MISSISSIPPI...
  THIS INCLUDES THE CITIES OF...PETAL...HATTIESBURG...

* UNTIL 800 AM CST

* AT 712 AM CST...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
  OF 60 MPH.  THIS STORM WAS LOCATED 12 MILES SOUTHWEST OF ROCK HILL
  MOVING NORTHEAST AT 55 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  MAXIE BY 720 AM CST...
  BROOKLYN...MCLAURIN...HATTIESBURG AND RAWLS SPRINGS BY 725 AM
  CST...
  SUNRISE AND PETAL BY 730 AM CST...
  MACEDONIA BY 735 AM CST...

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 NOON CST THURSDAY FOR EASTERN
MISSISSIPPI.

&&

LAT...LON 3091 8935 3134 8935 3135 8945 3143 8945
      3143 8914 3091 8913 3090 8915 3091 8934
TIME...MOT...LOC 1312Z 244DEG 49KT 3095 8933

$$

GRG

1 follow-up statement

451 
WWUS54 KJAN 201347
SVSJAN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
747 AM CST THU DEC 20 2012

MSC035-201400-
/O.CON.KJAN.SV.W.0628.000000T0000Z-121220T1400Z/
FORREST MS-
747 AM CST THU DEC 20 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 800 AM CST
FOR SOUTHERN FORREST COUNTY...

AT 748 AM CST...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE TRACKING
A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
OF 60 MPH.  THIS STORM WAS LOCATED NEAR MAXIE MOVING NORTHEAST AT 55
MPH.

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 NOON CST THURSDAY FOR EASTERN
MISSISSIPPI.

&&

LAT...LON 3091 8935 3117 8935 3131 8915 3091 8913
      3090 8915
TIME...MOT...LOC 1348Z 244DEG 49KT 3102 8917

$$

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 Dec 20, 5:03 AM CST, 2 hours 9 minutes earlier.

Area forecast discussion, Dec 20, 5:03 AM CST, 2 hours 9 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE JACKSON MS
503 AM CST THU DEC 20 2012

.SHORT TERM...TODAY THROUGH FRIDAY NIGHT...ADVERTISED SEVERE SQUALL
LINE ONGOING EARLY THIS MORNING ACROSS ARKANSAS...LOUISIANA AND
WESTERN MISSISSIPPI. THIS LINE HAS HAD A HISTORY OF PRODUCING WIND
DAMAGE ACROSS TEXAS...ARKANSAS AND LOUISIANA THROUGH THE COURSE OF
THE EVENING AND OVERNIGHT. AS THIS LINE MOVES INTO CENTRAL
MISSISSIPPI...IT CONTINUES TO ENCOUNTER VERY MOIST AND UNSTABLE AIR
CHARACTERIZED BY 500 J/KG SBCAPE IN SOUTHERN COUNTIES. THE LINE IS ALSO
MOVING INTO AN AIRMASS THAT HAS 300 M2/S2 0-3KM HELICITY IN THE WEST
TO VALUES AROUND 400-600 M2/S2 0-3KM ACROSS EASTERN MISSISSIPPI.
FORCING WITH THIS SYSTEM HAS BEEN ENOUGH TO COMPENSATE FOR VERY WARM
MID LEVEL TEMPERATURES OF AROUND -9 TO -11C AND WEAK LAPSE RATES. IN
ADDITION...DEWPOINTS HAVE REACHED AROUND 65-69 DEGREES IN THIS AREA.
COUPLE ALL OF THIS WITH A LARGE AMOUNT OF WIND IN PLACE THROUGHOUT
THE ATMOSPHERE...THE EASTERN 2/3RDS OF THE CWA HAS BEEN PLACED IN A
TORNADO WATCH UNTIL NOON. WESTERN SECTIONS HAVE BEEN UNDER A SEVERE
THUNDERSTORM WATCH UNTIL 7AM...AND GIVEN THE FAST PACE OF THIS LINE
THIS SHOULD BE GOOD TO EXPIRE OR PERHAPS CANCEL SOME LOCATIONS A
LITTLE EARLY. THE THIN SQUALL LINE HAS BEEN MOVING AT A FAST
PACE...AROUND 45-50MPH. AHEAD OF THE LINE...WARM ADVECTION SHOWERS
HAVE BEEN ONGOING THROUGHOUT THE NIGHT BUT OVER THE PAST FEW HOURS
HAVE ENCOUNTERED A BIT OF THAT HELICITY AND BEEN ABLE TO
ROTATE...PROMPTING TORNADO WARNINGS IN SOME LOCATIONS. AS
ANTICIPATED...MUCH OF THIS ACTIVITY HAS LITTLE TO NO LIGHTNING
ASSOCIATED WITH IT.

GIVEN THE FAST PACE OF THE LINE...MUCH OF THIS ACTIVITY SHOULD BE
OUT OF THE CWA BY AROUND 9-930AM. CLEARING SHOULD BE RATHER RAPID
BEHIND THE LINE AS STRONG CAA MOVES INTO THE CWA AS WELL AS MUCH
DRIER AIR CHARACTERIZED BY PW VALUES AROUND 0.2 INCHES. HIGH
TEMPERATURES WILL BE REACHED EARLY IN THE DAY AND BEGIN DROPPING
THROUGH THE AFTERNOON INTO THE 50S AND 40S. WITH A TIGHT PRESSURE
GRADIENT IN PLACE AS THE SFC LOW PULLS OUT TOWARD THE GREAT LAKES
AND HIGH PRESSURE MOVING EAST...WINDS WILL BE VERY GUSTY OUT OF THE
NORTHWEST TODAY WITH SPEEDS AROUND 25-35MPH AND GUSTS UP TO 45MPH.
DUE TO THIS A WIND ADVISORY REMAINS IN EFFECT UNTIL 6PM. WINDS
SHOULD SUBSIDE THROUGH THE EVENING...BUT NOT FULLY DECOUPLE...AS
HIGH PRESSURE MOVES INTO THE REGION. WITH MUCH COLDER AIR IN
PLACE...LOWS WILL DIP INTO THE LOWER 30S AND UPPER 20S TONIGHT UNDER
CLEAR SKIES.

SFC HIGH PRESSURE WILL MOVE INTO THE REGION FOR FRIDAY AS WELL AS
RIDGING ALOFT. THIS WILL LEAD TO SUNNY SKIES BUT A COOLER DAY WITH
HIGHS IN THE LOWER 50S. OVERNIGHT LOWS FRIDAY NIGHT WILL AGAIN BE
CHILLY IN THE MID TO UPPER 20S. /28/

.LONG TERM...SATURDAY THROUGH SUNDAY NIGHT...

AFTER A VERY CHILLY START SATURDAY...THE WEEKEND IS LOOKING FAIRLY
QUIET WEATHER-WISE WITH DRY CONDITIONS AND MODERATING TEMPERATURES
THE GENERAL RULE AS MID LEVEL RIDGING TAKES PLACE AND SURFACE HIGH
PRESSURE SHIFTS EAST. LOW LEVEL MOISTURE RETURN COULD LEAD TO ENOUGH
INSTABILITY FOR A FEW SHOWERS BY SUNDAY AFTERNOON AND WILL KEEP LOW
PRECIP CHANCES GOING.

MONDAY THROUGH NEXT THURSDAY...

WE STILL EXPECT A STRONG STORM SYSTEM TO AFFECT THE ARKLAMISS DURING
THE EARLY TO MIDDLE PORTION OF NEXT WEEK. HOWEVER...CONFIDENCE IS
VERY LOW IN THE FORECAST DETAILS GIVEN RUN-TO-RUN INCONSISTENCIES
AND SPREAD AMONG THE GLOBAL MODELS. WILL STAY THE COURSE FOR NOW AND
KEEP THE MENTION OF HEAVY RAINFALL AND SEVERE STORMS IN THE
GRAPHICS. OF SOMEWHAT HIGHER CONFIDENCE IS THAT VERY CHILLY AIR
COULD SURGE SOUTH INTO THE ARKLAMISS FOR WEDNESDAY INTO THURSDAY AND
BEYOND AS COLD HIGH PRESSURE OVER CANADA MAKES A MOVE TO THE SOUTH
BEHIND THE ADVERTISED STORM SYSTEM. /EC/

&&

.AVIATION...MIX OF MVFR TO IFR CONDITIONS ONGOING ACROSS THE TAF
SITES. LINE OF SEVERE STORMS MOVING THROUGH THE JACKSON AREA AT
11Z...AND SHOULD BE AFFECTING KMEI/KGTR/KHBG/KPIB AROUND 14-15Z.
SHOWERS AHEAD OF THE LINE MAY AFFECT THOSE EASTERN SITES ANYTIME
BETWEEN 11Z AND 15Z. NOT MUCH LIGHTNING WITH ANY OF THESE STORMS AND
COULD HAVE THE POTENTIAL TO BRING WIND GUSTS TO 50KTS.BEHIND COLD
FROPA..WINDS WILL SWITCH TO THE NW WITH SUSTAINED WINDS OF 17-27KTS AND
GUSTS TO 40KTS AT TIMES WITH VFR CONDITIONS RETURNING ALONG WITH
CLEARING SKIES. WINDS WILL TAPER DOWN TONIGHT TO AROUND 10KTS OR
LESS. /28/

&&

.PRELIMINARY POINT TEMPS/POPS...
JACKSON       57  29  53  28 /  28   0   0   0
MERIDIAN      62  27  53  25 /  93   0   0   0
VICKSBURG     57  28  54  26 /  13   0   0   0
HATTIESBURG   64  29  56  25 /  94   0   0   0
NATCHEZ       56  28  54  28 /  13   0   0   0
GREENVILLE    57  26  50  29 /   9   0   0   0
GREENWOOD     55  27  51  29 /  21   0   0   0

&&

.JAN WATCHES/WARNINGS/ADVISORIES...
MS...WIND ADVISORY UNTIL 6 PM CST THIS EVENING FOR MSZ018-019-025>066-
     072>074.

LA...WIND ADVISORY UNTIL 6 PM CST THIS EVENING FOR LAZ007>009-015-016-
     023>026.

AR...WIND ADVISORY UNTIL 6 PM CST THIS EVENING FOR ARZ074-075.

&&

28/EC

Hazardous weather outlook, Dec 20, 6:00 AM CST, 1 hour 12 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE JACKSON MS
600 AM CST THU DEC 20 2012

ARZ074-075-LAZ007>009-015-016-023>026-MSZ018-019-025>066-072>074-
211200-
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-
600 AM CST THU DEC 20 2012

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

.DAY ONE...TODAY AND TONIGHT

SEVERE LINE OF STORMS MOVING EAST ACROSS THE ARKLAMISS THIS MORNING.
LOCATIONS EAST OF INTERSTATE 55 WILL HAVE THE GREATEST RISK THROUGH
10AM WITH THE MAIN HAZARD BEING DAMAGING STRAIGHT LINE WINDS. A
TORNADO CANNOT BE RULED OUT. AFTER 10 AM...THE RISK FOR SEVERE
WEATHER WILL BE GREATLY DIMINISHED AS A COLD FRONT WILL PUSH THROUGH
THE STATE.

FOLLOWING THE COLD FRONT...GUSTY NORTH TO NORTHWEST WINDS WILL MOVE
INTO THE REGION WITH SUSTAINED WIND SPEEDS OF 25 TO 35 MPH WITH GUSTS
OF 30 TO 45 MPH. SPORADIC 50 MPH WIND GUSTS ACROSS THE DELTA REGION
ARE NOT OUT OF THE QUESTION BETWEEN EARLY MORNING AND EARLY
AFTERNOON. A WIND ADVISORY IS IN EFFECT FOR THE ENTIRE REGION UNTIL 6
PM THIS EVENING...AFTER WHICH WINDS ARE EXPECTED TO SUBSIDE.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

FOR EARLY NEXT WEEK...INCLUDING CHRISTMAS DAY...ANOTHER STORM SYSTEM
COULD IMPACT THE REGION BRINGING HEAVY RAINFALL AND SEVERE
THUNDERSTORMS. PLEASE STAY TUNED FOR UPDATES AS THE WEEKEND
APPROACHES.

.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 THROUGH MID-MORNING AND POSSIBLY AGAIN NEXT
WEEK.

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

28

In the hours before

Local storm report, Dec 20, 6:21 AM CST, 51 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON MS
621 AM CST THU DEC 20 2012

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

0530 AM     TSTM WND DMG     3 W UNION               32.57N 89.17W
12/20/2012                   NEWTON             MS   EMERGENCY MNGR

            TREES DOWN ACROSS HWY 492

&&

AG

Local storm report, Dec 20, 6:38 AM CST, 34 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON MS
638 AM CST THU DEC 20 2012

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

0440 AM     TSTM WND DMG     SSE KOSCIUSKO           33.06N 89.59W
12/20/2012                   ATTALA             MS   LAW ENFORCEMENT

            TREE DOWN ACROSS HWY 35S NEAR CR1007.

0455 AM     TSTM WND DMG     1 N LEXINGTON           33.13N 90.05W
12/20/2012                   HOLMES             MS   LAW ENFORCEMENT

            TREES DOWN ON HWY 17 NORTH.

0455 AM     TSTM WND DMG     LEXINGTON               33.12N 90.05W
12/20/2012                   HOLMES             MS   LAW ENFORCEMENT

            POWERLINES DOWN IN THE CITY OF LEXINGTON.

&&

AWEBER

Local storm report, Dec 20, 6:58 AM CST, 14 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON MS
658 AM CST THU DEC 20 2012

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

0654 AM     TSTM WND GST     BAY SPRINGS             31.98N 89.28W
12/20/2012  M53 MPH          JASPER             MS   EMERGENCY MNGR

&&

AG

Local storm report, Dec 20, 7:01 AM CST, 11 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON MS
701 AM CST THU DEC 20 2012

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

0627 AM     TSTM WND DMG     WEST POINT              33.61N 88.64W
12/20/2012                   CLAY               MS   PUBLIC

            REPORTS OF TREES DOWN IN CLAY COUNTY NEAR WEST POINT.
            REPORT RELAYED VIA SOCIAL MEDIA.

0650 AM     TSTM WND DMG     COLUMBUS                33.51N 88.40W
12/20/2012                   LOWNDES            MS   LAW ENFORCEMENT

            REPORTS OF TREES DOWN NEAR 5TH AVENUE AND 15TH STREET IN
            COLUMBUS.

0650 AM     TSTM WND DMG     CALEDONIA               33.68N 88.33W
12/20/2012                   LOWNDES            MS   LAW ENFORCEMENT

            REPORTS OF TREES DOWN AT 4250 NORTHWOLF ROAD IN
            CALEDONIA.

&&

AWEBER

Local storm report, Dec 20, 7:08 AM CST, 4 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON MS
708 AM CST THU DEC 20 2012

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

0435 AM     TSTM WND DMG     1 NE LAKE BRUIN         32.00N 91.24W
12/20/2012                   TENSAS             LA   LAW ENFORCEMENT

            2 TREES DOWN ON THE NORTH END OF HWY 604. ALSO NUMEROUS
            POWER LINES DOWN ACROSS THE PARISH.

0358 AM     TSTM WND DMG     4 ENE CROWVILLE         32.26N 91.53W
12/20/2012                   MADISON            LA   LAW ENFORCEMENT

            TREE ACROSS HWY 577.

0430 AM     TSTM WND DMG     CLAYTON                 31.72N 91.54W
12/20/2012                   CONCORDIA          LA   LAW ENFORCEMENT

            TREES DOWN ON POWER LINES.

0410 AM     TSTM WND DMG     HARRISONBURG            31.77N 91.82W
12/20/2012                   CATAHOULA          LA   LAW ENFORCEMENT

            NUMEROUS TREES AND POWER LINES DOWN ACROSS THE PARISH.

&&

AWEBER

Local storm report, Dec 20, 7:12 AM CST, 0 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON MS
712 AM CST THU DEC 20 2012

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

0350 AM     TSTM WND DMG     WINNSBORO               32.16N 91.72W
12/20/2012                   FRANKLIN           LA   LAW ENFORCEMENT

            A FEW POWER LINES DOWN IN THE PARISH.

&&

AWEBER

The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 20, 2:14 AM CST	Special Weather Statement	JAN	Kemper	31 min
Dec 20, 2:59 AM CST	Severe Thunderstorm Warning	JAN	Bolivar, Washington	76 min
Dec 20, 3:23 AM CST	Special Weather Statement	JAN	Madison	32 min
Dec 20, 3:42 AM CST	Severe Thunderstorm Warning	JAN	Issaquena, Sharkey, Warren	78 min
Dec 20, 3:45 AM CST	Severe Thunderstorm Warning	JAN	Humphreys, Leflore, Sunflower	45 min
Dec 20, 3:59 AM CST	Tornado Warning	JAN	Madison	26 min
Dec 20, 4:18 AM CST	Severe Thunderstorm Warning	JAN	Holmes, Yazoo	72 min
Dec 20, 4:22 AM CST	Tornado Warning	JAN	Attala, Leake	34 min
Dec 20, 4:25 AM CST	Severe Thunderstorm Warning	JAN	Carroll, Grenada, Leflore, Montgomery	80 min
Dec 20, 4:34 AM CST	Severe Thunderstorm Warning	JAN	Adams, Claiborne, Franklin, Jefferson	71 min
Dec 20, 4:48 AM CST	Severe Thunderstorm Warning	JAN	Hinds, Madison	57 min
Dec 20, 4:56 AM CST	Special Weather Statement	JAN	Simpson	29 min
Dec 20, 5:01 AM CST	Severe Thunderstorm Warning	JAN	Copiah	59 min
Dec 20, 5:08 AM CST	Severe Thunderstorm Warning	JAN	Attala, Choctaw, Webster	67 min
Dec 20, 5:16 AM CST	Severe Thunderstorm Warning	JAN	Leake, Rankin, Scott	74 min
Dec 20, 5:24 AM CST	Severe Thunderstorm Warning	JAN	Lincoln	66 min
Dec 20, 5:26 AM CST	Severe Thunderstorm Warning	JAN	Jasper, Smith	34 min
Dec 20, 5:27 AM CST	Severe Thunderstorm Warning	JAN	Marion	48 min
Dec 20, 5:38 AM CST	Tornado Warning	JAN	Marion	37 min
Dec 20, 5:44 AM CST	Severe Thunderstorm Warning	JAN	Jefferson Davis, Lawrence, Simpson	76 min
Dec 20, 5:53 AM CST	Severe Thunderstorm Warning	JAN	Clay, Oktibbeha, Winston	52 min
Dec 20, 5:56 AM CST	Special Weather Statement	JAN	Kemper, Noxubee	29 min
Dec 20, 5:58 AM CST	Severe Thunderstorm Warning	JAN	Neshoba, Newton	62 min
Dec 20, 5:59 AM CST	Severe Thunderstorm Warning	JAN	Covington, Lamar	46 min
Dec 20, 6:00 AM CST	Severe Thunderstorm Warning	JAN	Jasper, Smith	75 min
Dec 20, 6:17 AM CST	Severe Thunderstorm Warning	JAN	Lauderdale	43 min
Dec 20, 6:18 AM CST	Severe Thunderstorm Warning	JAN	Lamar, Marion	42 min
Dec 20, 6:20 AM CST	Severe Thunderstorm Warning	JAN	Lowndes, Noxubee	40 min
Dec 20, 6:23 AM CST	Severe Thunderstorm Warning	JAN	Covington, Jones	82 min
Dec 20, 6:33 AM CST	Severe Thunderstorm Warning	JAN	Kemper, Lauderdale	57 min
Dec 20, 6:38 AM CST	Severe Thunderstorm Warning	JAN	Forrest	37 min
Dec 20, 6:48 AM CST	Severe Thunderstorm Warning	JAN	Lamar, Marion	57 min
Dec 20, 6:51 AM CST	Severe Thunderstorm Warning	JAN	Clarke, Lauderdale	54 min
Dec 20, 6:59 AM CST	Severe Thunderstorm Warning	JAN	Lowndes, Noxubee	19 min

Nearby

Severe Thunderstorm Warnings in Mississippi, 2012 Every severe thunderstorm warning in 2012

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.