Alert archive / Mississippi / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 156, NWS Jackson, MS

April 6, 2003Copiah County, Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at Apr 6, 2003, 7:22 PM CDT for Copiah County, 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 outline as issued.

The facts

Issued: Apr 6, 2003, 7:22 PM CDT (00:22 UTC)
Expired: Apr 6, 2003, 8:05 PM CDT
In force: 43 min
Issued by: NWS Jackson, MS
Area: Counties, with a storm outline in the text

County Copiah 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 6, 3:45 PM CDT	Tornado Watch	SPC	5 hr
Apr 6, 6:50 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Jackson, MS (KJAN), launched 00:00Z, 0.4 hours before the alert went out and 63 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: 614 J/kg
Mixed-layer CIN: -31 J/kg
Mixed-layer LCL: 742 m above ground
0-6 km bulk shear: 61 kt
0-1 km storm-relative helicity: 417 m²/s²
0-3 km storm-relative helicity: 582 m²/s²
Significant tornado parameter: 1.9
Supercell composite: 7.7

Open this sounding in Storm Lab

The text

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

689 
WUUS54 KJAN 070022
SVRJAN
MSC029-070105-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE JACKSON MS
720 PM CDT SUN APR 6 2003

THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  COPIAH COUNTY IN CENTRAL MISSISSIPPI

* UNTIL 805 PM CDT

* AT 720 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 24 MILES SOUTHWEST OF DENTVILLE...OR ABOUT 22
  MILES WEST OF BROOKHAVEN...MOVING EAST AT 40 MPH.

* THE SEVERE THUNDERSTORM WILL...
  BE NEAR DENTVILLE AT 745 PM CDT
  BE NEAR BEAUREGARD AT 750 PM CDT
  BE NEAR HAZLEHURST AT 755 PM CDT
  BE NEAR GALLMAN...CRYSTAL SPRINGS AT 800 PM CDT
  BE NEAR GEORGETOWN AT 805 PM CDT

HAIL TO THE SIZE OF HALF DOLLARS AND WIND GUSTS TO 60 MPH ARE 
EXPECTED WITH THIS STORM. 

A TORNADO WATCH IS ALSO IN EFFECT. TORNADOES CAN DEVELOP SUDDENLY 
FROM SEVERE THUNDERSTORMS.  WE ARE MONITORING THE SOUTHERN PORTION 
OF COPIAH COUNTY CLOSELY FOR POSSIBLE UPGRADE TO TORNADO WARNING 
AFTER ABOUT 745 PM CDT. 

LAT...LON 3191 9071 3171 9073 3172 9040 3172 9027
          3177 9016 3190 9017 3202 9025

$$

CRAVEN

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 6, 3:00 PM CDT, 4 hours 22 minutes earlier.

Area forecast discussion, Apr 6, 3:00 PM CDT, 4 hours 22 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE JACKSON MS
300 PM CDT SUN APR 6 2003

BUSY AFTERNOON IN CENTRAL MISSISSIPPI AS SUPER CELLS CONTINUE TO
TRACK TO THE EAST ACROSS THE AREA. THERE HAVE BEEN NUMEROUS REPORTS
OF LARGE HAIL...SEVERE WINDS AND FLOODING WITH THESE STORMS. THE
CURRENT SUPER CELLS WILL LIKELY EXIT THE CWA BEFORE THE AFTERNOON
ENDS BUT RUC ANALYSIS HAS THE MAIN SPEED MAX OVER NORTHEAST TEXAS
APPROACHING THE AREA. UPSTREAM PROFILERS SHOW THE LOW LEVEL JET
INCREASING AS WELL. SURFACE TEMPERATURES ACROSS SOUTHERN LOUISIANA
AND SOUTHERN MISSISSIPPI ARE IN THE LOWER 80S WITH DEW PTS IN THE
UPPER 60S WHICH SHOULD ALSO HELP FUEL LATER DEVELOPMENT. SATELLITE
IMAGERY SHOWS TWO ADDITIONAL LINES OF THUNDERSTORMS FORMING OVER
EAST TEXAS ALONG AND AHEAD OF THE COLD FRONT THAT WILL LIKELY AFFECT
OUR AREA LATER TONIGHT.

THE SURFACE LOW ASSOCIATED WITH THE COLD FRONT WILL MOVE TO THE
NORTHEAST FROM CENTRAL OKLAHOMA TO CENTRAL OHIO BY NOON MONDAY
BEFORE SHIFTING EAST. THE COLD FRONT WILL MOVE INTO THE DELTA REGION
BY MORNING BUT SLOW AND STALL NEAR THE NATCHEZ TRACE MONDAY
AFTERNOON. IN ADDITION TO MORE SEVERE THUNDERSTORMS ACROSS THE AREA
TONIGHT...DAYTIME HEATING WILL AID THE DEVELOPMENT OF SEVERE STORM
DEVELOPMENT AGAIN MONDAY AFTERNOON ALONG AND SOUTH OF THE FRONT. A
LOW PRESSURE CENTER WILL FORM ON THE FRONT OVER SOUTHEAST TEXAS
MONDAY NIGHT AND RIDE TO THE NORTHEAST ALONG THE FRONT. THIS LOW
WILL TRACK OVER OUR AREA TUESDAY FINALLY DRAGGING THE COLD FRONT
SOUTH OF OUR AREA AND USHERING IN A MUCH COOLER AND DRIER AIRMASS
WEDNESDAY.

LONG RANGE MODELS STILL HAVE DIFFERENCES ON POSITION AND TIMING OF A
CLOSED UPPER LOW JUST EAST OF OUR AREA WEDNESDAY NIGHT. THIS LOW
WILL HOLD CLOUD COVER IN OVER MUCH OF THE AREA WEDNESDAY BEFORE IT
SHIFTS TO THE EAST. HIGH PRESSURE SURFACE AND ALOFT WILL BUILD OVER
THE AREA FRIDAY THROUGH SUNDAY PROVIDING WARM AND DRY WEATHER.

PRELIMINARY NUMBERS...
JAN 065/079/057/069/042 7372-
MEI 065/079/059/069/043 7572-

.JAN...
AR...NONE.
LA...NONE.
MS...NONE.

22

Hazardous weather outlook, Apr 6, 3:17 PM CDT, 4 hours 5 minutes before

ARZ074-075-LAZ007>009-015-016-023>026-MSZ018-019-025>066-072>074-
071200-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE JACKSON MS
317 PM CDT SUN APR 06 2003

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

.DAY ONE...TONIGHT AND MONDAY...

...THUNDERSTORMS...
STRONG THUNDERSTORMS CONTINUE TO MOVE THROUGH PORTIONS OF CENTRAL
AND EAST MISSISSIPPI.  THE STORMS HAVE PRODUCED HAIL TO THE SIZE
OF GOLF BALLS...WINDS IN EXCESS OF 60 MPH...AND TORRENTIAL
RAINFALL.  IN ADDITION...THERE HAVE BEEN NUMEROUS REPORTS OF
DAMAGE WITH THE PASSAGE OF THESE STORMS.

FURTHERMORE...ANOTHER LINE OF STRONG THUNDERSTORMS IS DEVELOPING
ACROSS PORTIONS OF ARKANSAS...LOUISIANA AND TEXAS.  THIS LINE
WILL CONTINUE TO MOVE EASTWARD THROUGH THE LOWER MISSISSIPPI
RIVER VALLEY.  ATMOSPHERIC CONDITIONS WILL AGAIN BE RIPE FOR
NUMEROUS STRONG AND SEVERE THUNDERSTORMS.  THE RISKS ASSOCIATED
WITH THESE STORMS WILL BE LARGE HAIL...TO THE SIZE OF GOLF BALLS
OR LARGER...GUSTY WINDS IN EXCESS OF 60 MPH...TORRENTIAL RAINFALL
AND ISOLATED TORNADOES.

THE THUNDERSTORMS ARE EXPECTED TO MOVE OUT OF THE AREA
OVERNIGHT...HOWEVER A COLD FRONT IS EXPECTED TO REMAIN ACROSS THE
REGION.  STRONG STORMS MAY AGAIN BE POSSIBLE ALONG AND SOUTHEAST
OF THE NATCHEZ TRACE PARKWAY.

STAY TUNED TO NOAA WEATHER RADIO OR YOUR LOCAL TELEVISION OR
RADIO STATION FOR UPDATES ON THIS DANGEROUS SEVERE WEATHER
EPISODE.

...FLOODING...
PERIODS OF HEAVY RAINFALL WILL OCCUR WITH THUNDERSTORMS THAT
DEVELOP OVER NORTHEAST LOUISIANA...SOUTHEAST ARKANSAS AND MOST OF
MISSISSIPPI THIS AFTERNOON AND TONIGHT. AREAS OF PONDING CAN BE
EXPECTED ON ROADWAYS AND IN LOW LYING AREAS DURING AREAS OF HEAVY
RAIN.  AREAS OF FLOODING HAVE BEEN REPORTED WITH THE
THUNDERSTORMS THAT HAVE AFFECTED THE REGION EARLIER THIS
AFTERNOON.  ADDITIONAL RAINFALL WILL AGGRAVATE THE ALREADY
SATURATED SOIL CONDITIONS.

.DAYS TWO THROUGH SEVEN...MONDAY NIGHT THROUGH SUNDAY...

...DAYS TWO AND THREE...
A COLD FRONT WILL BECOME STALLED OVER THE REGION MONDAY NIGHT AND
TUESDAY...WHILE A SURFACE LOW PRESSURE MOVES NORTHEAST OUT OF THE
WESTERN GULF OF MEXICO.  STRONG STORMS MAY BE POSSIBLE ON MONDAY
NIGHT AND TUESDAY...PRIMARILY ALONG AND SOUTHEAST OF THE NATCHEZ
TRACE PARKWAY.	IN ADDITION...A VERY MOIST AIRMASS WILL BE IN
PLACE LENDING TO THE POTENTIAL FOR PERIODS OF HEAVY RAINFALL AREA
WIDE.  PONDING OF WATER ON ROADWAYS WILL BE POSSIBLE.

...DAYS FOUR THROUGH SEVEN...
NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER CALL TO ACTION STATEMENT...
STORM SPOTTERS...HAM RADIO OPERATORS...AND EMERGENCY MANAGEMENT
PERSONNEL IN SUPPORT OF SEVERE WEATHER OPERATIONS WILL CONTINUE
TO 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 6, 5:24 PM CDT, 1 hour 58 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON MS
524 PM CDT SUN APR 06 2003

TIME(CDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0445 PM    LAUDERDALE                MS   1.00 INCH HAIL
04/06/03   LAUDERDALE                     NICKEL TO QUARTER SIZE
                                          HAIL REPORTED OVER THE
                                          NORTH HALF OF THE
                                          COUNTY.SOME TREES WERE
                                          ALSO DOWN. REPORTED BY
                                          EOC.

Local storm report, Apr 6, 5:45 PM CDT, 1 hour 37 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON MS
545 PM CDT SUN APR 06 2003

TIME(CDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0415 PM    BASTROP                   LA   WIND DAMAGE
04/06/03   MOREHOUSE                      NUMEROUS TREES DOWN
                                          ACROSS THE PARISH.
                                          REPORTED BY SHERIFFS
                                          OFFICE.

Local storm report, Apr 6, 6:13 PM CDT, 1 hour 9 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON MS
613 PM CDT SUN APR 06 2003

TIME(CDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

515  PM    OAK GROVE                 LA   FLOODING
04/06/03   WEST CARROLL                   FLOODING OF ROADS AT AND
                                          SOUTH OF OAK GROVE.
                                          REPORTED BY WEST CARROLL
                                          SO.

0600 PM    GRENADA                   MS   FLOODING
04/06/03   GRENADA                        FLOODING OF 10 STREETS IN
                                          DOWNTOWN GRANADA.
                                          FLOODING ON COUNTY
                                          HIGHWAY 51 SOUTH.
                                          REPORTED BY GRANADA EMA.

Local storm report, Apr 6, 6:14 PM CDT, 1 hour 8 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON MS
614 PM CDT SUN APR 06 2003

TIME(CDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

515  PM    OAK GROVE                 LA   FLOODING
04/06/03   WEST CARROLL                   FLOODING OF ROADS AT AND
                                          SOUTH OF OAK GROVE.
                                          REPORTED BY WEST CARROLL
                                          SO.

0600 PM    GRENADA                   MS   FLOODING
04/06/03   GRENADA                        FLOODING OF 10 STREETS IN
                                          DOWNTOWN GRANADA.
                                          FLOODING ON COUNTY
                                          HIGHWAY 51 SOUTH.
                                          REPORTED BY GRANADA EMA.

Local storm report, Apr 6, 6:58 PM CDT, 24 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON MS
658 PM CDT SUN APR 06 2003

TIME(CDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0630 PM    GRENADA                   MS   FLOODING
04/06/03   GRENADA                        FLOODING REPORTS OF 20-30
                                          STREETS.FIVE HOMES HAS
                                          FLOODING. REPORTED BY
                                          EOC.

Local storm report, Apr 6, 7:19 PM CDT, 3 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON MS
719 PM CDT SUN APR 06 2003

TIME(CDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0700 PM    3 S VICKSBURG             MS   FLOODING
04/06/03   WARREN                         STREET FLOODING JUST
                                          SOUTH OF VICKSBURG.
                                          REPORTED BY HAM RADIO
                                          SPOTTER.

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 6, 7:03 PM CDT	Flash Flood Warning	JAN	Choctaw, Webster	4 hr
Apr 6, 7:17 PM CDT	Tornado Warning	JAN	Franklin, Jefferson, Lincoln	43 min
Apr 6, 7:18 PM CDT	Severe Thunderstorm Warning	JAN	Leake	57 min
Apr 6, 7:31 PM CDT	Severe Thunderstorm Warning	JAN	Attala	44 min
Apr 6, 7:34 PM CDT	Tornado Warning	JAN	Hinds, Rankin	41 min
Apr 6, 7:48 PM CDT	Tornado Warning	JAN	Copiah	42 min
Apr 6, 7:56 PM CDT	Tornado Warning	JAN	Lawrence, Lincoln, Simpson	49 min
Apr 6, 8:01 PM CDT	Tornado Warning	JAN	Leake, Scott	59 min
Apr 6, 8:18 PM CDT	Severe Thunderstorm Warning	JAN	Neshoba, Winston	42 min
Apr 6, 8:22 PM CDT	Tornado Warning	JAN	Jefferson Davis	28 min
Apr 6, 8:34 PM CDT	Severe Thunderstorm Warning	JAN	Newton	56 min
Apr 6, 8:35 PM CDT	Flash Flood Warning	JAN	Neshoba, Newton, Winston	6 hr
Apr 6, 8:47 PM CDT	Tornado Warning	JAN	Covington, Jefferson Davis, Simpson, Smith	73 min
Apr 6, 8:57 PM CDT	Severe Thunderstorm Warning	JAN	Kemper, Lauderdale, Noxubee	63 min
Apr 6, 9:02 PM CDT	Flash Flood Warning	JAN	Issaquena, Sharkey, Warren, Yazoo	6 hr
Apr 6, 9:21 PM CDT	Tornado Warning	JAN	Jasper, Jones	54 min
Apr 6, 9:50 PM CDT	Severe Thunderstorm Warning	JAN	Clarke	55 min
Apr 6, 10:23 PM CDT	Flash Flood Warning	JAN	Attala, Hinds, Leake, Madison, Rankin, Scott	5 hr
Apr 6, 10:32 PM CDT	Flash Flood Warning	JAN	Kemper, Lauderdale	6 hr
Apr 7, 12:21 AM CDT	Severe Thunderstorm Warning	JAN	Hinds, Rankin	44 min
Apr 7, 1:26 AM CDT	Severe Thunderstorm Warning	JAN	Lauderdale, Newton	59 min
Apr 7, 2:07 AM CDT	Severe Thunderstorm Warning	JAN	Hinds, Madison	58 min
Apr 7, 2:07 AM CDT	Tornado Warning	JAN	Lauderdale, Newton	53 min
Apr 7, 2:11 AM CDT	Severe Thunderstorm Warning	JAN	Hinds, Madison	54 min
Apr 7, 2:35 AM CDT	Flash Flood Warning	JAN	Hinds, Kemper, Lauderdale, Leake, Madison, Neshoba and 4 more	3 hr
Apr 7, 2:48 AM CDT	Severe Thunderstorm Warning	JAN	Rankin	42 min
Apr 7, 3:06 AM CDT	Severe Thunderstorm Warning	JAN	Scott	44 min
Apr 7, 3:14 AM CDT	Severe Thunderstorm Warning	JAN	Newton	46 min
Apr 7, 4:03 AM CDT	Severe Thunderstorm Warning	JAN	Lauderdale, Newton	57 min
Apr 7, 4:13 AM CDT	Tornado Warning	JAN	Lauderdale	47 min
Apr 7, 5:19 AM CDT	Severe Thunderstorm Warning	JAN	Newton	41 min
Apr 7, 5:20 AM CDT	Flash Flood Warning	JAN	Kemper, Lauderdale, Leake, Neshoba, Newton, Rankin and 1 more	3 hr
Apr 7, 6:36 AM CDT	Severe Thunderstorm Warning	JAN	Clarke, Lauderdale	44 min
Apr 7, 8:12 AM CDT	Severe Thunderstorm Warning	JAN	Marion	43 min
Apr 7, 8:49 AM CDT	Severe Thunderstorm Warning	JAN	Jefferson Davis	41 min
Apr 7, 9:42 AM CDT	Severe Thunderstorm Warning	JAN	Marion	48 min
Apr 7, 10:18 AM CDT	Severe Thunderstorm Warning	JAN	Lamar	62 min
Apr 7, 10:25 AM CDT	Severe Thunderstorm Warning	JAN	Covington, Jefferson Davis, Marion	65 min
Apr 7, 10:31 AM CDT	Severe Thunderstorm Warning	JAN	Forrest	59 min

Nearby

Severe Thunderstorm Warnings in Mississippi, 2003 Every severe thunderstorm warning in 2003

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.