Alert archive / Mississippi / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 470, NWS Jackson, MS

June 20, 2008Clay County, Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at Jun 20, 2008, 5:14 PM CDT for Clay County, Mississippi. It was in force for 14 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: Jun 20, 2008, 5:14 PM CDT (22:14 UTC)
Expired: Jun 20, 2008, 5:28 PM CDT
In force: 14 min
Issued by: NWS Jackson, MS
Area: Storm-based polygon

County Clay County, MS

The radar

The Columbus AFB radar (KGWX), 50 km from the middle of the area, began a volume at 22:14 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
Jun 20, 1:37 PM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Jackson, MS (KJAN), launched 12:00Z, 10.2 hours before the alert went out and 192 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: 1438 J/kg
Mixed-layer CIN: -32 J/kg
Mixed-layer LCL: 941 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 49 m²/s²
0-3 km storm-relative helicity: 57 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.2

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 Jun 20, 3:45 PM CDT, 1 hour 29 minutes earlier.

Area forecast discussion, Jun 20, 3:45 PM CDT, 1 hour 29 minutes before

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Hazardous weather outlook, Jun 20, 4:01 PM CDT, 1 hour 13 minutes before

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In the hours before

Local storm report, Jun 20, 3:46 PM CDT, 1 hour 28 minutes before

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Local storm report, Jun 20, 3:54 PM CDT, 1 hour 20 minutes before

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Local storm report, Jun 20, 4:26 PM CDT, 48 minutes before

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Local storm report, Jun 20, 4:28 PM CDT, 46 minutes before

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Local storm report, Jun 20, 4:46 PM CDT, 28 minutes before

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Local storm report, Jun 20, 5:03 PM CDT, 11 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 20, 8:16 AM CDT	Severe Thunderstorm Warning	JAN	Leake	44 min
Jun 20, 8:22 AM CDT	Severe Thunderstorm Warning	JAN	Madison, Rankin	38 min
Jun 20, 12:41 PM CDT	Severe Thunderstorm Warning	JAN	Warren	64 min
Jun 20, 1:01 PM CDT	Severe Thunderstorm Warning	JAN	Madison, Yazoo	59 min
Jun 20, 1:11 PM CDT	Severe Thunderstorm Warning	JAN	Claiborne	31 min
Jun 20, 1:21 PM CDT	Severe Thunderstorm Warning	JAN	Claiborne, Copiah, Hinds, Warren	54 min
Jun 20, 1:23 PM CDT	Severe Thunderstorm Warning	JAN	Rankin, Simpson, Smith	67 min
Jun 20, 1:31 PM CDT	Severe Thunderstorm Warning	JAN	Adams, Claiborne, Jefferson	38 min
Jun 20, 1:31 PM CDT	Severe Thunderstorm Warning	JAN	Kemper, Neshoba	13 min
Jun 20, 1:34 PM CDT	Severe Thunderstorm Warning	JAN	Jasper, Smith	56 min
Jun 20, 1:51 PM CDT	Severe Thunderstorm Warning	JAN	Adams, Franklin, Jefferson	39 min
Jun 20, 2:02 PM CDT	Severe Thunderstorm Warning	JAN	Hinds, Rankin	29 min
Jun 20, 2:14 PM CDT	Severe Thunderstorm Warning	JAN	Hinds	46 min
Jun 20, 2:31 PM CDT	Severe Thunderstorm Warning	JAN	Hinds, Rankin	44 min
Jun 20, 2:32 PM CDT	Severe Thunderstorm Warning	JAN	Kemper, Lauderdale	43 min
Jun 20, 2:50 PM CDT	Severe Thunderstorm Warning	JAN	Jasper, Smith	55 min
Jun 20, 2:51 PM CDT	Severe Thunderstorm Warning	JAN	Smith	24 min
Jun 20, 2:53 PM CDT	Severe Thunderstorm Warning	JAN	Copiah, Hinds, Rankin, Simpson	52 min
Jun 20, 3:00 PM CDT	Severe Thunderstorm Warning	JAN	Jefferson Davis, Lawrence	60 min
Jun 20, 3:00 PM CDT	Severe Thunderstorm Warning	JAN	Lauderdale, Newton	45 min
Jun 20, 3:16 PM CDT	Severe Thunderstorm Warning	JAN	Jasper, Smith	44 min
Jun 20, 3:27 PM CDT	Severe Thunderstorm Warning	JAN	Covington, Jefferson Davis, Simpson, Smith	63 min
Jun 20, 3:41 PM CDT	Severe Thunderstorm Warning	JAN	Newton	37 min
Jun 20, 3:43 PM CDT	Flash Flood Warning	JAN	Newton	81 min
Jun 20, 4:06 PM CDT	Severe Thunderstorm Warning	JAN	Covington, Jones	54 min
Jun 20, 4:42 PM CDT	Severe Thunderstorm Warning	JAN	Clarke	48 min
Jun 20, 4:49 PM CDT	Severe Thunderstorm Warning	JAN	Forrest, Lamar	19 min
Jun 20, 4:54 PM CDT	Severe Thunderstorm Warning	JAN	Lamar, Marion	48 min
Jun 20, 5:08 PM CDT	Severe Thunderstorm Warning	JAN	Forrest	52 min
Jun 20, 5:18 PM CDT	Severe Thunderstorm Warning	JAN	Lamar	42 min
Jun 20, 6:12 PM CDT	Severe Thunderstorm Warning	JAN	Forrest	34 min
Jun 20, 9:23 AM CDT	Severe Thunderstorm Warning	JAN	Ashley	37 min

Nearby

Severe Thunderstorm Warnings in Mississippi, 2008 Every severe thunderstorm warning in 2008

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.