Alert archive / Mississippi / Severe Thunderstorm Warnings in 2010

Severe Thunderstorm Warning 545, NWS Jackson, MS

October 24, 2010Bolivar County, Washington County, Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at Oct 24, 2010, 4:35 PM CDT for Bolivar County, Washington County, Mississippi. It was in force for 55 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 24, 2010, 4:35 PM CDT (21:35 UTC)
Expired: Oct 24, 2010, 5:30 PM CDT
In force: 55 min
Issued by: NWS Jackson, MS
Area: Storm-based polygon

Counties Bolivar County, MS, Washington County, MS

The radar

The Jackson/Brandon,MS radar (KDGX), 165 km from the middle of the area, began a volume at 21:39 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 24, 4:00 PM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Shreveport, LA (KSHV), launched 12:00Z, 9.6 hours before the alert went out and 290 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: 1476 J/kg
Mixed-layer CIN: -19 J/kg
Mixed-layer LCL: 505 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 290 m²/s²
0-3 km storm-relative helicity: 279 m²/s²
Significant tornado parameter: 2.3
Supercell composite: 11.1

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 24, 2:43 PM CDT, 1 hour 52 minutes earlier.

Area forecast discussion, Oct 24, 2:43 PM CDT, 1 hour 52 minutes before

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Hazardous weather outlook, Oct 24, 2:06 PM CDT, 2 hours 29 minutes before

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In the hours before

Special weather statement, Oct 24, 3:04 PM CDT, 1 hour 31 minutes before

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Special weather statement, Oct 24, 3:12 PM CDT, 1 hour 23 minutes before

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Special weather statement, Oct 24, 3:33 PM CDT, 1 hour 2 minutes before

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Local storm report, Oct 24, 4:04 PM CDT, 31 minutes before

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Special weather statement, Oct 24, 4:35 PM CDT, 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
Oct 24, 4:12 PM CDT	Severe Thunderstorm Warning	JAN	Bolivar	63 min
Oct 24, 4:39 PM CDT	Severe Thunderstorm Warning	JAN	Issaquena	51 min
Oct 24, 5:02 PM CDT	Severe Thunderstorm Warning	JAN	Bolivar, Sunflower, Washington	58 min
Oct 24, 5:52 PM CDT	Severe Thunderstorm Warning	JAN	Leflore, Sunflower	23 min
Oct 24, 6:12 PM CDT	Severe Thunderstorm Warning	JAN	Bolivar, Sunflower, Washington	35 min
Oct 24, 3:41 PM CDT	Severe Thunderstorm Warning	JAN	East Carroll, Morehouse, Richland, West Carroll	64 min
Oct 24, 3:16 PM CDT	Severe Thunderstorm Warning	JAN	Ashley	59 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.