Alert archive / Mississippi / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 453, NWS Jackson, MS

July 20, 2000Jones County, Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at Jul 20, 2000, 7:31 PM CDT for Jones County, Mississippi. It was in force for 29 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: Jul 20, 2000, 7:31 PM CDT (00:31 UTC)
Expired: Jul 20, 2000, 8:00 PM CDT
In force: 29 min
Issued by: NWS Jackson, MS
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Jones County, MS

What was reported inside it

Time	Report	Where	Remark
Jul 20, 7:45 PM CDT	Thunderstorm Wind	Laurel, MS	Several trees were blown down and caused minor damage to several buildings.

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

Jackson, MS (KJAN), launched 00:00Z, 0.5 hours before the alert went out and 116 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: 3475 J/kg
Mixed-layer CIN: -45 J/kg
Mixed-layer LCL: 1414 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: 49 m²/s²
0-3 km storm-relative helicity: 84 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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 Jul 20, 6:35 PM CDT, 56 minutes earlier.

Area forecast discussion, Jul 20, 6:35 PM CDT, 56 minutes before

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE JACKSON MS
635 PM CDT THU JUL 20 2000

STORMS HAVE MOVED SE OUT OF THE WATCH AREA IN NE SECTIONS OF THE
CWFA WHICH INCLUDED NOXUBEE/WINSTON COUNTIES NORTH TO WEBSTER/CLAY AND
LOWNDES COUNTIES. LOW LEVELS BEHIND THE STORMS HAVE STABILIZED. SPS
BEING DRAWN UP RIGHT NOW TO REMOVE WATCH HEADLINE IN ZONES FOR THAT
AREA. OTHERWISE...BOUNDARY SEEN ON 88D MOVING SOUTH OF THE JACKSON
METRO WITH WIDELY SCATTERED STORMS DEVELOPING ALONG IT FROM WEST OF
NATCHEZ EAST TOWARDS LAUREL IN SE MISSISSIPPI. WILL GENERALLY HOLD EVENING
POPS SOUTH AND EAST OF THIS BOUNDARY AND REMOVE POPS NORTHWEST OF IT
FOR NOW. WILL UPDATE REST OF Z6ONES LATER THIS EVENING WHEN
CONVECTION WINDS DOWN.

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

In the hours before

Special weather statement, Jul 20, 6:30 PM CDT, 1 hour 1 minute before

MSZ028>033-037>039-210000-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
630 PM CDT THU JUL 20 2000

SEVERE THUNDERSTORM WATCH 600 HAS BEEN CANCELLED FOR THE FOLLOWING
COUNTIES IN NORTHEAST MISSISSIPPI.

THE COUNTIES CANCELLED ARE: MONTGOMERY...WEBSTER...CLAY...
LOWNDES...OKTIBBEHA...CHOCTAW...ATTALA...WINSTON...AND NOXUBEE.

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 20, 7:14 PM CDT	Severe Thunderstorm Warning	JAN	Franklin, Lincoln	46 min
Jul 20, 10:02 PM CDT	Severe Thunderstorm Warning	JAN	Lamar	28 min
Jul 21, 1:35 PM CDT	Severe Thunderstorm Warning	JAN	Lincoln	25 min
Jul 21, 1:58 PM CDT	Severe Thunderstorm Warning	JAN	Marion	32 min
Jul 21, 2:23 PM CDT	Severe Thunderstorm Warning	JAN	Lawrence	37 min
Jul 21, 2:54 PM CDT	Severe Thunderstorm Warning	JAN	Jefferson	36 min
Jul 21, 3:55 PM CDT	Severe Thunderstorm Warning	JAN	Forrest	35 min
Jul 21, 4:02 PM CDT	Severe Thunderstorm Warning	JAN	Franklin, Jefferson	28 min
Jul 21, 4:21 PM CDT	Severe Thunderstorm Warning	JAN	Lincoln	24 min
Jul 21, 4:30 PM CDT	Severe Thunderstorm Warning	JAN	Forrest	30 min
Jul 21, 4:36 PM CDT	Flash Flood Warning	JAN	Forrest	84 min
Jul 21, 4:53 PM CDT	Severe Thunderstorm Warning	JAN	Copiah	37 min
Jul 21, 5:29 PM CDT	Severe Thunderstorm Warning	JAN	Copiah	31 min
Jul 21, 5:58 PM CDT	Severe Thunderstorm Warning	JAN	Copiah, Simpson	47 min
Jul 21, 2:05 PM CDT	Severe Thunderstorm Warning	JAN	Catahoula	25 min
Jul 21, 2:32 PM CDT	Severe Thunderstorm Warning	JAN	Catahoula, Concordia	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.