Alert archive / Mississippi / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 539, NWS Jackson, MS

July 13, 2003Simpson County, Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at Jul 13, 2003, 10:39 PM CDT for Simpson County, Mississippi. It was in force for 61 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: Jul 13, 2003, 10:39 PM CDT (03:39 UTC)
Expired: Jul 13, 2003, 11:40 PM CDT
In force: 61 min
Issued by: NWS Jackson, MS
Area: Counties, with a storm outline in the text

County Simpson County, MS

The nearest sounding before it

Jackson, MS (KJAN), launched 00:00Z, 3.7 hours before the alert went out and 46 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: 247 J/kg
Mixed-layer CIN: -163 J/kg
Mixed-layer LCL: 1691 m above ground
0-6 km bulk shear: 8 kt
0-1 km storm-relative helicity: -45 m²/s²
0-3 km storm-relative helicity: -51 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.

581 
WUUS54 KJAN 140339
SVRJAN
MSC127-140440-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE JACKSON MS
1039 PM CDT SUN JUL 13 2003

THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A

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

* UNTIL 1140 PM CDT

* AT 1039 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS FROM 6 MILES NORTHEAST OF MENDENHALL  
  TO 4 MILES EAST OF MAGEE...MOVING SOUTHWEST AT 10 MPH.

* SEVERE THUNDERSTORMS WILL...
  BE NEAR MAGEE AT 1055 PM CDT
  BE NEAR MENDENHALL...DLO AT 1105 PM CDT
  BE NEAR BRAXTON AT 1115 PM CDT
  BE NEAR PINOLA AT 1135 PM CDT

WINDS FROM 60 TO 70 MPH ARE LIKELY WITH THIS STORM.

HAIL TO THE SIZE OF PENNIES IS LIKELY WITH THIS STORM.

LAT...LON 3205 9005 3178 9000 3179 8967 3204 8969

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 13, 7:37 PM CDT	Severe Thunderstorm Warning	JAN	Leake	43 min
Jul 13, 8:10 PM CDT	Severe Thunderstorm Warning	JAN	Holmes	45 min
Jul 13, 8:58 PM CDT	Severe Thunderstorm Warning	JAN	Scott	32 min
Jul 13, 9:26 PM CDT	Severe Thunderstorm Warning	JAN	Leflore	44 min
Jul 14, 5:53 PM CDT	Severe Thunderstorm Warning	JAN	Winston	47 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.