Alert archive / Mississippi / Special Weather Statements in 2021

Special Weather Statement, NWS Jackson, MS

June 30, 2021Choctaw County, Mississippi

NWS Jackson, MS issued this special weather statement at Jun 30, 2021, 1:11 PM CDT for Choctaw County, Mississippi. It was in force for 34 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: Jun 30, 2021, 1:11 PM CDT (18:11 UTC)
Expired: Jun 30, 2021, 1:45 PM CDT
In force: 34 min
Issued by: NWS Jackson, MS

County Choctaw County, MS

The radar

The Columbus AFB radar (KGWX), 108 km from the middle of the area, began a volume at 18:12 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Little Rock, AR (KLZK), launched 12:00Z, 6.2 hours before the alert went out and 166 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: 72 J/kg
Mixed-layer CIN: -72 J/kg
Mixed-layer LCL: 1091 m above ground
0-6 km bulk shear: 3 kt
0-1 km storm-relative helicity: -46 m²/s²
0-3 km storm-relative helicity: -13 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 Jun 29, 6:37 PM CDT, 18 hours 34 minutes earlier.

Area forecast discussion, Jun 29, 6:37 PM CDT, 18 hours 34 minutes before

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Hazardous weather outlook, Jun 29, 3:58 PM CDT, 21 hours 13 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
Jun 30, 1:18 PM CDT	Special Weather Statement	JAN	Winston	27 min

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; radar from the NEXRAD Level II archive.