Alert archive / Mississippi / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 381, NWS Jackson, MS

June 25, 2000Lamar County, Marion County, Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at Jun 25, 2000, 4:50 PM CDT for Lamar County, Marion County, Mississippi. It was in force for 40 min. 2 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Jun 25, 2000, 4:50 PM CDT (21:50 UTC)
Expired: Jun 25, 2000, 5:30 PM CDT
In force: 40 min
Issued by: NWS Jackson, MS
Area: Whole counties

Counties Lamar County, MS, Marion County, MS

What was reported inside it

Time	Report	Where	Remark
Jun 25, 5:15 PM CDT	Thunderstorm Wind	Sandy Hook, MS	A few trees were blown down and caused some minor damage.
Jun 25, 5:25 PM CDT	Thunderstorm Wind	Oak Grove, MS	Several trees were blown down and caused some minor damage.

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 9.8 hours before the alert went out and 108 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: 823 J/kg
Mixed-layer CIN: -51 J/kg
Mixed-layer LCL: 1027 m above ground
0-6 km bulk shear: 6 kt
0-1 km storm-relative helicity: -6 m²/s²
0-3 km storm-relative helicity: 1 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KJAN 252151
SVRJAN
MSC073-091-252230-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE JACKSON MS
450 PM CDT SUN JUN 25 2000

THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  MARION COUNTY IN SOUTH CENTRAL MISSISSIPPI
  LAMAR COUNTY IN SOUTHEAST MISSISSIPPI

* UNTIL 530 PM CDT

* AT 450 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  A CLUSTER OF SEVERE THUNDERSTORMS OVER EASTERN MARION AND MUCH OF
  LAMAR COUNTIES. THESE STORMS WERE DRIFTING SOUTHWEST.

* SOME TOWNS IN THE PATH OF THESE STORMS INCLUDE...
  SANDY HOOK
  BAXTERVILLE
  COLUMBIA

DAMAGING WINDS AND TORRENTIAL RAINS
 ARE LIKELY WITH THESE STORMS. 
SEEK SHELTER INDOORS IF STORMS APPROACH. FLOODING OF LOW LYING AND 
FLOOD PRONE AREAS IS ALSO POSSIBLE.

65

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 Jun 25, 2:30 PM CDT, 2 hours 20 minutes earlier.

Area forecast discussion, Jun 25, 2:30 PM CDT, 2 hours 20 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE JACKSON MS
230 PM CDT SUN JUN 25 2000

SUBTROPICAL UPPER RIDGE WAS NOTED OVER NORTHERN MEXICO WITH A LOWER
LEVEL BERMUDA HIGH OVER THE WESTERN ATLANTIC WHICH WAS KEEPING THINGS
HOT AND HUMID. SOME UPPER LEVEL FEATURES TO NOTE WERE THE LONGWAVE
700-500 MB SHEAR AXIS MOVING THROUGH THE TN VALLEY/EAST MS/AL...
SHORTWAVE RIDING OVER TOP OF MEXICAN UPPER RIDGE IN KS/OK IN
ASSOCIATION WITH 40-50KT 250 MB JET MAX AND WELL-DEFINED SHORTWAVE
OVER S GA/N FL. ALL SEEN CLEARLY ON WATER VAPOR IMAGERY. ALL MODELS
GENERALLY CAUGHT THESE FEATURES WITH DISCREPANCIES ON MOISTURE
FIELDS. ETA HAS CONVECTIVE FEEDBACK PROBLEMS ONCE AGAIN PAINTING QPF
DURING LATE NOCTURNAL HOURS WITH AVN HANDLING QPF/TRENDS THE BEST
AGAIN. WILL GENERALLY RIDE THE AVN/S FORECAST WITH AVERAGE
CONFIDENCE ON POPS WITH NUMEROUOS MESOSCALE FEATURES ABOUND.

BOUNDARY SEEN ON SATELLITE/RADAR ASSOCIATED DRIVING SOUTH THROUGH E
MS/W AL. IT WAS ALREADY TRIGGERING SCATTERED THUNDERSTORMS EAST OF
1-55 WITH A WEAK SEABREEZE BOUNDARY NOTED MOVING SLOWLY UP FROM THE
GULF COAST. CHANCE POPS EXPECTED ACROSS E/SE SECTIONS THIS EVENING
WHERE SURFACE BOUNDARIES COMBINED WITH UPPER DIVERGENCE IN NEAR MID
LEVEL DEFORMATION ZONE HELPING PROVIDE AMPLE LIFT. FARTHER NW...
MOISTURE BECOMES MORE SHALLOW PER UPPER AIR PRECIPITABLE WATER
ANALYSIS WITH JUST ISOLATED POPS EXPECTED TOWARDS THE MS RIVER. WET
MICROBURST ANALYSIS INDICATES GOOD POTENTIAL FOR DOWNBURST WINDS
ACROSS THE EAST HALF OF MS AGAIN WHERE LI/S APPROACHING -9...MID
LEVEL LAPSES RATES AROUND 6.5 DEG C/KM AND CAPES NEAR 4000 J/KG
ALREADY HELPING TO PRODUCE ISOLATED...SEVERE DOWNBURSTS. LOSS OF
INSOLATION AFTER SUNSET SHOULD HELP PUT AN END TO CONVECTION AS
SKIES CLEAR. MAY HAVE TO INTRODUCE SOME OVERNIGHT FOG IN EAST.

A COLD FRONT IN THE PLAINS STATES WILL SLOWLY MAKE IT/S WAY SE INTO
THE ARK-LA-TEX REGION BY MON AFTERNOON AS A VIGOROUS SHORTWAVE MOVES
INTO MISSOURI. THE COLD FRONT AND TAIL END OF SHORTWAVE TO START
AFFECTING NW SECTIONS MON NIGHT AND REST OF THE FORECAST AREA
TUES/TUES NIGHT. SLIGHTLY COOLER TEMPS BY TUESDAY AS INCREASE IN
MOISTURE/CLOUDS/PRECIP OCCURS OVER THE REGION. FAN/FWC CLOSE FOR
BOTH POPS/TEMPS AND WILL HOLD CLOSE.

EXTENDED DISCUSSION: CONSENSUS ON MEDIUM RANGE MODELS IS THAT COLD
FRONT WILL MOVE SLOWLY SOUTHEAST ACROSS THE FORECAST AREA THROUGH
FRIDAY. SHORTWAVES ARE ALSO EXPECTED TO CONTINUE RIDING OVER TOP OF
THE TX/MEXICAN SUBTROPICAL RIDGE INTO THE REGION. FRONT SHOWN TO PUSH
THE COAST BY FRI...BUT NOT CONFIDENT WITH THIS HAPPENING AND FOR NOW
WILL CONTINUE CHANCE OF SHOWERS/STORMS THROUGH THE PERIOD.

QPF DISCUSSION: VARIOUS OUTFLOWS ALREADY OCCURRING EAST OF I-55.
DIURNAL HEATING THIS EVENING AND MONDAY WITH HIGH INSTABILITIES AND
DEFORMATION LIFT SHOULD RESULT IN SCATTERED SHOWERS/STORMS ONCE
AGAIN...MAINLY EAST OF I-55 WITH ISOLATED CONVECTION POSSIBLE
FARTHER TO THE WEST. GENERALLY FOLLOWED AN AVN/HPC BLEND FOR
0.10-0.20 AMOUNTS EAST LITTLE IN THE WEST FOR THE 24 HR PD.

PRELIMINARY NUMBERS...
JAN 073/092 073/090 072 2324
MEI 071/093 071/091 07^0 3424

.JAN...
MS...NONE.
AR...NONE.
LA...NONE.
/05

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 25, 12:38 PM CDT	Severe Thunderstorm Warning	JAN	Scott	37 min
Jun 25, 1:35 PM CDT	Severe Thunderstorm Warning	JAN	Neshoba	25 min
Jun 25, 2:10 PM CDT	Severe Thunderstorm Warning	JAN	Clarke	35 min
Jun 25, 2:48 PM CDT	Severe Thunderstorm Warning	JAN	Lauderdale	27 min
Jun 25, 4:01 PM CDT	Severe Thunderstorm Warning	JAN	Forrest	29 min
Jun 25, 4:58 PM CDT	Severe Thunderstorm Warning	JAN	Lowndes	32 min
Jun 25, 5:10 PM CDT	Severe Thunderstorm Warning	JAN	Forrest	50 min
Jun 25, 5:47 PM CDT	Severe Thunderstorm Warning	JAN	Franklin	28 min

Nearby

Severe Thunderstorm Warnings in Mississippi, 2000 Every severe thunderstorm warning in 2000

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.