Alert archive / Mississippi / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 346, NWS Jackson, MS

May 13, 2000Leflore County, Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at May 13, 2000, 12:33 AM CDT for Leflore County, Mississippi. It was in force for 42 min. 1 report 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: May 13, 2000, 12:33 AM CDT (05:33 UTC)
Expired: May 13, 2000, 1:15 AM CDT
In force: 42 min
Issued by: NWS Jackson, MS
Area: Whole counties

County Leflore County, MS

What was reported inside it

Time	Report	Where	Remark
May 13, 12:45 AM CDT	Thunderstorm Wind	Greenwood, MS	Trees knocked down some power lines along highway 49.

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 watch it was issued in

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

Issued	Product	Office	Lasted
May 12, 10:45 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Jackson, MS (KJAN), launched 00:00Z, 5.6 hours before the alert went out and 138 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: 2422 J/kg
Mixed-layer CIN: -47 J/kg
Mixed-layer LCL: 1395 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: 57 m²/s²
0-3 km storm-relative helicity: 104 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.

020 
WUUS54 KJAN 130533
SVRJAN
MSC083-130615-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE JACKSON MS
1233 AM CDT SAT MAY 13 2000

THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  LEFLORE COUNTY IN NORTH CENTRAL MISSISSIPPI
  
* UNTIL 115 AM CDT

* AT 1231 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  SEVERE THUNDERSTORMS 17 MILES NORTHWEST OF ITTA BENA...OR ABOUT 4
  MILES SOUTH OF RULEVILLE...MOVING EAST AT 40 MPH.

* THE SEVERE THUNDERSTORM WILL BE...
  NEAR ITTA BENA AT 1245 AM CDT
  NEAR GREENWOOD AT 1250 AM CDT

DAMAGING WINDS CAN BE EXPECTED. GO TO A SAFE PLACE NOW AND REMAIN 
PROTECTED UNTIL THE STORM HAS PASSED. RULEVILLE POLICE DEPARTMENT 
REPORTED TREES DOWN ON HOMES AT 1230 AM.

64

&

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 May 12, 9:10 PM CDT, 3 hours 23 minutes earlier.

Area forecast discussion, May 12, 9:10 PM CDT, 3 hours 23 minutes before

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE JACKSON MS
910 PM CDT FRI MAY 12 2000

COLD FRONT ON TAP TO MAKE ITS WAY INTO OUR NECK OF THE WOODS ON
SATURDAY. THE FRONT IS NOW LOCATED FROM NEAR CAPE GIRARDEAU MO
(KCGI)...TO FORT SMITH AR (KFTM)...THROUGH THE ARKLATEX TO NEAR
DALLAS/FT WORTH (KDFW). BROADSCALE LINE OF CONVECTION EXTENDS FROM
THE UPPER GT LAKES...THROUGH THE MID MISSISSIPPI VALLEY TO CENTRAL
TEXAS WITH NUMEROUS WEATHER WATCHES IN AFFECT WITH THE LATEST (SVR
TSTORM WATCH/WW282) NUDGED RIGHT UP TO OUR NW CWFA BORDER.

WITH RIGHT ENTRANCE REGION OF 50-60KT 500 MB JET MAX DRIVING NE
THROUGH EASTERN OK/NORTHERN AR...GOOD INSTABILITY (LI/S -6--10/
CAPES 4000 J/KG) AND ABUNDANT LOW LEVEL MOISTURE (DEW PTS LOW-MID
70S) AHEAD OF THE FRONT...FEEL SLIGHT RISK BY SPC INTO NW QUARTER OF
CWFA IS WARRANTED WITH ADDITIONAL THUNDERSTORM ACTIVITY BREAKING
OUT OVER CENTRAL/EASTERN AR AHEAD OF MAIN LINE OF CONVECTION OVER
ARKLATEX. WILL UPDATE NW AND FAR WEST ZONES TO INCREASE POPS 10-20%
PER CURRENT RADAR/SATELLITE/LIGHTNING DATA TRENDS AND ADD A MENTION
OF SEVERE (HARDEST IN NW ZONES) FOR HAIL/DAMAGING WIND POTENTIAL.
OTHERWISE...WILL LEAVE OTHER ZONES ALONE FOR NOW WITH MAIN SHORTWAVE
IN SOUTHERN STREAM NOT EXPECTED IN UNTIL AFTER 12Z SATURDAY FOR REST
OF CWFA WITH COLD FRONT MOVING INTO THE LOWER MISSISSIPPI VALLEY.
UPDATES FOR NW/WEST-CENTRAL TO BE OUT HERE SHORTLY.

.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
May 13, 12:08 AM CDT	Severe Thunderstorm Warning	JAN	Bolivar	37 min
May 13, 12:13 AM CDT	Severe Thunderstorm Warning	JAN	Sunflower, Washington	47 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.