Alert archive / Mississippi / Severe Thunderstorm Warnings in 2010

Severe Thunderstorm Warning 567, NWS Jackson, MS

October 27, 20104 counties in Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at Oct 27, 2010, 9:42 AM CDT for 4 counties in Mississippi. It was in force for 63 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Oct 27, 2010, 9:42 AM CDT (14:42 UTC)
Expired: Oct 27, 2010, 10:45 AM CDT
In force: 63 min
Issued by: NWS Jackson, MS
Area: Storm-based polygon

Counties Leake County, MS, Neshoba County, MS, Newton County, MS, Scott County, MS

The radar

The Jackson/Brandon,MS radar (KDGX), 70 km from the middle of the area, began a volume at 14:43 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 watch it was issued in

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

Issued	Product	Office	Lasted
Oct 27, 5:48 AM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Jackson, MS (KJAN), launched 12:00Z, 2.7 hours before the alert went out and 76 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: 1755 J/kg
Mixed-layer CIN: 0 J/kg
Mixed-layer LCL: 459 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 188 m²/s²
0-3 km storm-relative helicity: 248 m²/s²
Significant tornado parameter: 1.6
Supercell composite: 9.1

Open this sounding in Storm Lab

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 Oct 27, 6:11 AM CDT, 3 hours 31 minutes earlier.

Area forecast discussion, Oct 27, 6:11 AM CDT, 3 hours 31 minutes before

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Hazardous weather outlook, Oct 27, 5:52 AM CDT, 3 hours 50 minutes before

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In the hours before

Special weather statement, Oct 27, 8:41 AM CDT, 1 hour 1 minute before

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Special weather statement, Oct 27, 9:24 AM CDT, 18 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
Oct 27, 8:46 AM CDT	Severe Thunderstorm Warning	JAN	Neshoba, Newton	44 min
Oct 27, 2:32 PM CDT	Severe Thunderstorm Warning	JAN	Hinds, Rankin	58 min
Oct 27, 3:44 PM CDT	Severe Thunderstorm Warning	JAN	Smith	46 min
Oct 27, 4:03 PM CDT	Severe Thunderstorm Warning	JAN	Jasper	57 min
Oct 27, 4:20 PM CDT	Severe Thunderstorm Warning	JAN	Newton	35 min
Oct 27, 4:32 PM CDT	Severe Thunderstorm Warning	JAN	Lauderdale	43 min
Oct 27, 4:45 PM CDT	Tornado Warning	JAN	Lauderdale	23 min
Oct 27, 5:59 PM CDT	Tornado Warning	JAN	Jasper, Smith	25 min
Oct 27, 5:56 PM CDT	Severe Thunderstorm Warning	JAN	Franklin, Madison, Tensas	64 min
Oct 27, 6:33 PM CDT	Severe Thunderstorm Warning	JAN	Tensas	57 min

Nearby

Severe Thunderstorm Warnings in Mississippi, 2010 Every severe thunderstorm warning in 2010

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.