Alert archive / Mississippi / Special Weather Statements in 2021

Special Weather Statement, NWS Jackson, MS

February 11, 2021Forrest County, Lamar County, Mississippi

NWS Jackson, MS issued this special weather statement at Feb 11, 2021, 9:26 AM CST for Forrest County, Lamar County, Mississippi. It was in force for 49 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: Feb 11, 2021, 9:26 AM CST (15:26 UTC)
Expired: Feb 11, 2021, 10:15 AM CST
In force: 49 min
Issued by: NWS Jackson, MS

Counties Forrest County, MS, Lamar County, MS

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 3.4 hours before the alert went out and 111 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: 1397 J/kg
Mixed-layer CIN: -21 J/kg
Mixed-layer LCL: 571 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 140 m²/s²
0-3 km storm-relative helicity: 182 m²/s²
Significant tornado parameter: 1.0
Supercell composite: 7.5

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Feb 11, 5:44 AM CST, 3 hours 42 minutes earlier.

Area forecast discussion, Feb 11, 5:44 AM CST, 3 hours 42 minutes before

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Hazardous weather outlook, Feb 11, 6:26 AM CST, 3 hours before

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In the hours before

Local storm report, Feb 11, 7:58 AM CST, 1 hour 28 minutes before

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Local storm report, Feb 11, 8:32 AM CST, 54 minutes before

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Local storm report, Feb 11, 8:59 AM CST, 27 minutes before

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Local storm report, Feb 11, 9:10 AM CST, 16 minutes before

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Local storm report, Feb 11, 9:14 AM CST, 12 minutes before

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Special weather statement, Feb 11, 9:26 AM CST, 0 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 11, 1:34 AM CST	Special Weather Statement	JAN	Jefferson Davis, Lawrence	41 min
Feb 11, 2:10 AM CST	Special Weather Statement	JAN	Copiah	50 min
Feb 11, 2:45 AM CST	Special Weather Statement	JAN	Smith	45 min
Feb 11, 3:28 AM CST	Special Weather Statement	JAN	Scott	47 min
Feb 11, 3:40 AM CST	Severe Thunderstorm Warning	JAN	Leake, Neshoba, Newton, Scott	50 min
Feb 11, 4:11 AM CST	Special Weather Statement	JAN	Winston	49 min
Feb 11, 4:16 AM CST	Special Weather Statement	JAN	Lamar, Marion	44 min
Feb 11, 4:57 AM CST	Special Weather Statement	JAN	Lamar	48 min
Feb 11, 8:42 AM CST	Flash Flood Warning	JAN	Jones	4 hr
Feb 11, 8:47 AM CST	Flash Flood Warning	JAN	Forrest, Jefferson Davis, Lamar, Marion	4 hr
Feb 11, 11:15 AM CST	River Flood Warning	JAN	Attala, Holmes	32 hr
Feb 11, 3:43 PM CST	Winter Weather Advisory	JAN	Adams, Bolivar, Carroll, Claiborne, Franklin, Grenada and 14 more	20 hr

Nearby

Special Weather Statements in Mississippi, 2021 Every special weather statement in 2021

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.