Alert archive / Mississippi / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 184, NWS Jackson, MS

April 13, 2009Forrest County, Lamar County, Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at Apr 13, 2009, 12:30 AM CDT for Forrest County, Lamar County, Mississippi. It was in force for 60 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: Apr 13, 2009, 12:30 AM CDT (05:30 UTC)
Expired: Apr 13, 2009, 1:30 AM CDT
In force: 60 min
Issued by: NWS Jackson, MS
Area: Storm-based polygon

Counties Forrest County, MS, Lamar County, MS

The radar

The Mobile radar (KMOB), 123 km from the middle of the area, began a volume at 05:33 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.

Issued	Product	Office	Lasted
Apr 12, 8:30 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 00:00Z, 5.5 hours before the alert went out and 110 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: 1395 J/kg
Mixed-layer CIN: -4 J/kg
Mixed-layer LCL: 497 m above ground
0-6 km bulk shear: 73 kt
0-1 km storm-relative helicity: 485 m²/s²
0-3 km storm-relative helicity: 608 m²/s²
Significant tornado parameter: 5.0
Supercell composite: 19.5

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 Jackson, MS wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 12, 9:40 PM CDT, 2 hours 50 minutes earlier.

Area forecast discussion, Apr 12, 9:40 PM CDT, 2 hours 50 minutes before

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE JACKSON MS
940 PM CDT SUN APR 12 2009

.UPDATE...A WAKE LOW EVENT CONTINUED ACROSS NERN MS NEAR THE EDGE OF
THE MCS RAIN SHIELD WITH THE LATEST GUST OF 47KTS AT KCBM AT 0222Z.
HIGH WIND WARNING EXTENDED FOR LOWNDES UNTIL 11 PM. OTHERWISE...THE
TOR WW 146 CONTINUING OVER SERN MS WITH PRIMARY BAND OF CONVECTION
NOW STRADDLING A COLUMBIA TO QUITMAN LINE. THE LINE HAS SLOWED THE
EWD PROGRESS AND VERY HEAVY RAINS RESULTING IN SEVERAL FLASH FLOOD
WARNINGS WITH 3 TO 4 INCHES SHOWING UP IN FFMP QPE ALONG HIGHWAY 84
FROM COLLINS TO BROOKHAVEN. WILL BE ABLE TO BEGIN TRIMMING THE
ADVISORIES/WATCHES FROM THE SW AS THE SYSTEM EDGES EWD THRU MIDNIGHT.

&&

.AVIATION...
WIDESPREAD MVFR CONDITIONS IN RAIN/TSRA WITH EMBEDDED PERIODS OF
IFR IN HEAVIER RAIN/HAIL. ONCE THE RAIN ENDS...CEILINGS WILL LIKELY
DROP TO IFR FOR SEVERAL HOURS 08-14Z BEFORE IMPROVING TO VFR WITH
DRIER AIR MIXING DOWN FROM ALOFT DURING MIDDAY MONDAY.

&&

.PRELIMINARY POINT TEMPS/POPS...
JACKSON       57  77  48  67 /  61  24  20   5
MERIDIAN      60  76  47  69 /  89  44  34   6
VICKSBURG     57  76  47  69 /  33  18  12   5
HATTIESBURG   62  77  54  71 /  99  42  27   8
NATCHEZ       58  77  48  70 /  30  19  12   4
GREENVILLE    55  71  47  66 /  30  31  11   4
GREENWOOD     57  75  46  65 /  31  31  11   5

&&

.JAN WATCHES/WARNINGS/ADVISORIES...
MS...LAKE WIND ADVISORY UNTIL MIDNIGHT CDT TONIGHT FOR MSZ028>033-
     037>039-044>046-050>052-056>058-065-066-073-074.

     HIGH WIND WARNING UNTIL 11 PM CDT THIS EVENING FOR MSZ031.

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

40

Hazardous weather outlook, Apr 12, 1:17 PM CDT, 11 hours 13 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE JACKSON MS
117 PM CDT SUN APR 12 2009

LAZ016-023>026-MSZ042>066-072>074-131830-
MADISON LA-FRANKLIN LA-CATAHOULA-TENSAS-CONCORDIA-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-
117 PM CDT SUN APR 12 2009

THIS HAZARDOUS WEATHER OUTLOOK IS FOR AREAS ALONG AND SOUTH OF I-20.

.DAY ONE...TONIGHT AND MONDAY

SCATTERED TO NUMEROUS SEVERE THUNDERSTORMS WILL BE POSSIBLE FROM LATE
AFTERNOON...THROUGH THIS EVENING TILL AROUND 3 AM AS A SQUALL LINE
PUSHES ACROSS THE REGION. PENNY TO QUARTER SIZED HAIL...DAMAGING WIND
GUSTS AND TORNADOES WILL BE POSSIBLE. THE POTENTIAL DOES EXIST FOR
SOME OF THIS TO REACH SIGNIFICANT LEVELS WITH DESTRUCTIVE WIND GUSTS
GREATER THAN 75 MPH AND A FEW STRONG TORNADOES. LOOK FOR THE MAIN
ACTIVITY TO OCCUR WEST OF I-55 BETWEEN 3 AND 8 PM...THEN ALONG AND
EAST OF I-55 FROM 8 PM TO 3 AM.

.DAYS TWO THROUGH SEVEN...MONDAY NIGHT THROUGH SATURDAY

THE PROBABILITY OF 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 NEED TONIGHT.

ARZ074-075-LAZ007>009-015-MSZ018-019-025-034>036-040-041-131830-
ASHLEY-CHICOT-MOREHOUSE-WEST CARROLL-EAST CARROLL-RICHLAND-
BOLIVAR-SUNFLOWER-LEFLORE-WASHINGTON-HUMPHREYS-HOLMES-ISSAQUENA-
SHARKEY-
117 PM CDT SUN APR 12 2009

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST ARKANSAS...NORTHEAST
LOUISIANA AND THE DELTA REGION OF WEST CENTRAL MISSISSIPPI.

.DAY ONE...TONIGHT AND MONDAY

ISOLATED TO SCATTERED SEVERE STORMS WILL CONTINUE TO BE POSSIBLE THIS
AFTERNOON TILL 8 PM. PENNY TO QUARTER SIZED HAIL WILL BE THE PRIMARY
THREAT. HOWEVER...DAMAGING WINDS AND POSSIBLY EVEN A TORNADO MAY BE
POSSIBLE FOR LOCATIONS CLOSER TO I-20. MOST OF THIS ACTIVITY WILL
EXIT THE AREA BY 8 PM.

.DAYS TWO THROUGH SEVEN...MONDAY NIGHT THROUGH SATURDAY

THE PROBABILITY OF 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 THROUGH MID EVENING.

MSZ026>033-037>039-131830-
GRENADA-CARROLL-MONTGOMERY-WEBSTER-CLAY-LOWNDES-CHOCTAW-OKTIBBEHA-
ATTALA-WINSTON-NOXUBEE-
117 PM CDT SUN APR 12 2009

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHEAST MISSISSIPPI.

.DAY ONE...TONIGHT AND MONDAY

ISOLATED TO SCATTERED SEVERE STORMS WILL BE POSSIBLE BETWEEN 8 PM AND
3 AM AS A LINE OF STORMS PUSH ACROSS THE REGION. PENNY TO QUARTER
SIZED HAIL LOOK TO BE THE PRIMARY RISK. HOWEVER...DAMAGING WIND AND
EVEN A TORNADO WILL BE POSSIBLE THE CLOSER TO I-20 YOU ARE LOCATED.

.DAYS TWO THROUGH SEVEN...MONDAY NIGHT THROUGH SATURDAY

ISOLATED SEVERE STORMS WILL BE POSSIBLE ACROSS THIS SAME AREA MONDAY
AFTERNOON AS THE COLD FRONT AND UPPER LOW MOVE OVER THE REGION. HAIL
AND DAMAGING WINDS WILL BE THE MAIN RISK BETWEEN 2 AND 8 PM.

OTHER WISE...THE PROBABILITY OF 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 TONIGHT AND THEN POSSIBLY AGAIN MONDAY
AFTERNOON.

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

CME

In the hours before

Local storm report, Apr 12, 10:58 PM CDT, 1 hour 32 minutes before

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE JACKSON MS
1058 PM CDT SUN APR 12 2009

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

1050 PM     FLASH FLOOD      SANFORD                 31.49N 89.43W
04/12/2009                   COVINGTON          MS   TRAINED SPOTTER

            4.8 INCHES OF RAIN SINCE 7PM THIS EVENING...RAIN STILL
            FALLING. HALF AN INCH FELL IN 10 MIN.

&&

CME

Local storm report, Apr 12, 11:26 PM CDT, 1 hour 4 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON MS
1126 PM CDT SUN APR 12 2009

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

1125 PM     FLASH FLOOD      LAUREL                  31.69N 89.14W
04/12/2009                   JONES              MS   EMERGENCY MNGR

            NUMEROUS STREETS FLOODED IN LAUREL AND ACROSS THE COUNTY,
            MAINLY IN THE SOUTHERN PART. ROUGHLY 4 INCHES OF RAIN HAS
            FALLEN IN LAUREL SINCE AROUND 7PM AND IT IS STILL
            RAINING.

&&

JCULIN

Local storm report, Apr 12, 11:35 PM CDT, 55 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON MS
1135 PM CDT SUN APR 12 2009

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

1115 PM     FLASH FLOOD      COLUMBIA                31.26N 89.83W
04/12/2009                   MARION             MS   LAW ENFORCEMENT

            SOME MINOR STREET FLOODING REPORTED THROUGHOUT THE
            COUNTY.

1115 PM     FLASH FLOOD      WEST HATTIESBURG        31.32N 89.38W
04/12/2009                   LAMAR              MS   EMERGENCY MNGR

            SHEARS ROAD WAS FLOODED IN THE NORTHEAST PART OF LAMAR
            COUNTY.

1130 PM     FLASH FLOOD      HATTIESBURG             31.31N 89.31W
04/12/2009                   FORREST            MS   EMERGENCY MNGR

            NUMEROUS STREETS ARE FLOODED IN THE CITY OF HATTIESBURG.

&&

HAMRICK

Local storm report, Apr 12, 11:41 PM CDT, 49 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON MS
1141 PM CDT SUN APR 12 2009

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

1104 PM     TSTM WND DMG     2 N PETAL               31.37N 89.25W
04/12/2009                   FORREST            MS   EMERGENCY MNGR

            TREES DOWN AND POWERLINES DOWN ABOUT 2 MILES NORTH OF
            PETAL, NORTH OF HIGHWAY 42.

1140 PM     FLASH FLOOD      PETAL                   31.34N 89.25W
04/12/2009                   FORREST            MS   PUBLIC

            MINOR STREET FLOODING AROUND HWY 42.

&&

JCULIN

Local storm report, Apr 12, 11:59 PM CDT, 31 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON MS
1159 PM CDT SUN APR 12 2009

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

1153 PM     FLASH FLOOD      SUMRALL                 31.42N 89.55W
04/12/2009                   LAMAR              MS   TRAINED SPOTTER

            ABOUT 6.7 INCHES OF RAIN FELL SINCE AROUND 9PM. REPORTED
            BY HAM RADIO OPERATOR.

1153 PM     FLASH FLOOD      3 W HATTIESBURG         31.31N 89.36W
04/12/2009                   LAMAR              MS   TRAINED SPOTTER

            SPOTTER REPORTS ABOUT 7 INCHES OF RAIN FELL SINCE AROUND
            9PM IN THE OAK GROVE COMMUNITY. REPORTED BY HAM RADIO
            OPERATOR.

&&

JCULIN

Local storm report, Apr 13, 12:14 AM CDT, 16 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON MS
1214 AM CDT MON APR 13 2009

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

1110 PM     TSTM WND DMG     4 E PETAL               31.34N 89.18W
04/12/2009                   FORREST            MS   AMATEUR RADIO

            TREE DOWN ACROSS A ROAD

&&

JCULIN

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 12, 7:19 PM CDT	Severe Thunderstorm Warning	JAN	Jefferson Davis, Lawrence, Simpson	56 min
Apr 12, 7:27 PM CDT	High Wind Warning	JAN	Attala, Choctaw, Clay, Leake, Montgomery, Neshoba and 3 more	93 min
Apr 12, 7:28 PM CDT	Tornado Warning	JAN	Copiah, Jefferson Davis, Lawrence, Simpson	62 min
Apr 12, 7:42 PM CDT	Flash Flood Warning	JAN	Franklin, Lincoln	3 hr
Apr 12, 7:55 PM CDT	Tornado Warning	JAN	Covington, Jefferson Davis, Simpson, Smith	65 min
Apr 12, 8:12 PM CDT	Severe Thunderstorm Warning	JAN	Covington, Jefferson Davis	63 min
Apr 12, 8:17 PM CDT	Flash Flood Warning	JAN	Jefferson Davis, Lawrence	3 hr
Apr 12, 8:37 PM CDT	Tornado Warning	JAN	Jasper, Jones	53 min
Apr 12, 8:45 PM CDT	Flash Flood Warning	JAN	Covington, Forrest, Jefferson Davis, Jones, Lamar, Marion	3 hr
Apr 12, 9:07 PM CDT	Severe Thunderstorm Warning	JAN	Jones	53 min
Apr 12, 9:18 PM CDT	Tornado Warning	JAN	Clarke, Jasper	57 min
Apr 12, 9:25 PM CDT	High Wind Warning	JAN	Lowndes	61 min
Apr 12, 9:45 PM CDT	Severe Thunderstorm Warning	JAN	Covington, Forrest, Jefferson Davis, Jones, Lamar, Marion	45 min
Apr 12, 10:06 PM CDT	Severe Thunderstorm Warning	JAN	Lamar, Marion	54 min
Apr 12, 10:38 PM CDT	Wind Advisory	JAN	Clarke, Clay, Jasper, Kemper, Lauderdale, Lowndes and 5 more	2 hr
Apr 12, 10:47 PM CDT	Severe Thunderstorm Warning	JAN	Forrest, Lamar	58 min
Apr 12, 11:01 PM CDT	Tornado Warning	JAN	Forrest, Jones	44 min
Apr 12, 11:06 PM CDT	Flash Flood Warning	JAN	Forrest, Lamar, Marion	114 min
Apr 12, 11:38 PM CDT	Severe Thunderstorm Warning	JAN	Forrest, Lamar	52 min
Apr 12, 11:42 PM CDT	Flash Flood Warning	JAN	Forrest, Jones, Lamar, Marion	2 hr
Apr 12, 11:58 PM CDT	Areal Flood Warning	JAN	Covington, Jefferson Davis, Jones, Lamar, Lawrence, Lincoln and 1 more	6 hr
Apr 13, 12:54 AM CDT	Flash Flood Warning	JAN	Forrest, Lamar	106 min
Apr 13, 1:05 AM CDT	Tornado Warning	JAN	Forrest	12 min
Apr 13, 1:42 AM CDT	Areal Flood Warning	JAN	Covington, Forrest, Jones, Lamar, Marion	6 hr
Apr 13, 2:38 AM CDT	Areal Flood Warning	JAN	Forrest, Lamar, Marion	6 hr
Apr 13, 4:55 AM CDT	River Flood Warning	JAN	Covington, Forrest	39 hr
Apr 13, 6:18 AM CDT	Dense Fog Advisory	JAN	Adams, Claiborne, Clarke, Copiah, Covington, Forrest and 18 more	81 min
Apr 13, 10:06 AM CDT	River Flood Warning	JAN	Lawrence	11 hr
Apr 13, 3:51 PM CDT	Severe Thunderstorm Warning	JAN	Lamar, Marion	54 min
Apr 13, 4:59 PM CDT	Severe Thunderstorm Warning	JAN	Forrest, Jones	46 min
Apr 13, 5:09 PM CDT	Severe Thunderstorm Warning	JAN	Lawrence	33 min
Apr 13, 5:32 PM CDT	Severe Thunderstorm Warning	JAN	Jefferson Davis, Simpson	43 min
Apr 13, 6:11 PM CDT	Severe Thunderstorm Warning	JAN	Simpson, Smith	49 min

Nearby

Severe Thunderstorm Warnings in Mississippi, 2009 Every severe thunderstorm warning in 2009

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.