Alert archive / Mississippi / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 186, NWS Jackson, MS

April 13, 2009Forrest County, Jones County, Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at Apr 13, 2009, 4:59 PM CDT for Forrest County, Jones County, Mississippi. It was in force for 46 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: Apr 13, 2009, 4:59 PM CDT (21:59 UTC)
Expired: Apr 13, 2009, 5:45 PM CDT
In force: 46 min
Issued by: NWS Jackson, MS
Area: Storm-based polygon

Counties Forrest County, MS, Jones County, MS

The radar

The Jackson/Brandon,MS radar (KDGX), 121 km from the middle of the area, began a volume at 22:03 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
Apr 13, 4:16 PM CDT	Severe Thunderstorm Watch	SPC	4 hr

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 10.0 hours before the alert went out and 137 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1276 m above ground
0-6 km bulk shear: 66 kt
0-1 km storm-relative helicity: -136 m²/s²
0-3 km storm-relative helicity: 57 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -1.6

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 Apr 13, 3:03 PM CDT, 1 hour 56 minutes earlier.

Area forecast discussion, Apr 13, 3:03 PM CDT, 1 hour 56 minutes before

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Hazardous weather outlook, Apr 13, 1:21 PM CDT, 3 hours 38 minutes before

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In the hours before

Local storm report, Apr 13, 12:26 PM CDT, 4 hours 33 minutes before

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Local storm report, Apr 13, 12:27 PM CDT, 4 hours 32 minutes before

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Local storm report, Apr 13, 4:22 PM CDT, 37 minutes before

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Special weather statement, Apr 13, 4:33 PM CDT, 26 minutes before

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Local storm report, Apr 13, 4:46 PM CDT, 13 minutes before

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Special weather statement, Apr 13, 4:54 PM CDT, 5 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
Apr 12, 7:19 PM CDT	Severe Thunderstorm Warning	JAN	Jefferson Davis, Lawrence, Simpson	56 min
Apr 12, 7:27 PM CDT	High Wind Warning	JAN	Attala, Choctaw, Clay, Leake, Montgomery, Neshoba and 3 more	93 min
Apr 12, 7:28 PM CDT	Tornado Warning	JAN	Copiah, Jefferson Davis, Lawrence, Simpson	62 min
Apr 12, 7:42 PM CDT	Flash Flood Warning	JAN	Franklin, Lincoln	3 hr
Apr 12, 7:55 PM CDT	Tornado Warning	JAN	Covington, Jefferson Davis, Simpson, Smith	65 min
Apr 12, 8:12 PM CDT	Severe Thunderstorm Warning	JAN	Covington, Jefferson Davis	63 min
Apr 12, 8:17 PM CDT	Flash Flood Warning	JAN	Jefferson Davis, Lawrence	3 hr
Apr 12, 8:37 PM CDT	Tornado Warning	JAN	Jasper, Jones	53 min
Apr 12, 8:45 PM CDT	Flash Flood Warning	JAN	Covington, Forrest, Jefferson Davis, Jones, Lamar, Marion	3 hr
Apr 12, 9:07 PM CDT	Severe Thunderstorm Warning	JAN	Jones	53 min
Apr 12, 9:18 PM CDT	Tornado Warning	JAN	Clarke, Jasper	57 min
Apr 12, 9:25 PM CDT	High Wind Warning	JAN	Lowndes	61 min
Apr 12, 9:45 PM CDT	Severe Thunderstorm Warning	JAN	Covington, Forrest, Jefferson Davis, Jones, Lamar, Marion	45 min
Apr 12, 10:06 PM CDT	Severe Thunderstorm Warning	JAN	Lamar, Marion	54 min
Apr 12, 10:38 PM CDT	Wind Advisory	JAN	Clarke, Clay, Jasper, Kemper, Lauderdale, Lowndes and 5 more	2 hr
Apr 12, 10:47 PM CDT	Severe Thunderstorm Warning	JAN	Forrest, Lamar	58 min
Apr 12, 11:01 PM CDT	Tornado Warning	JAN	Forrest, Jones	44 min
Apr 12, 11:06 PM CDT	Flash Flood Warning	JAN	Forrest, Lamar, Marion	114 min
Apr 12, 11:38 PM CDT	Severe Thunderstorm Warning	JAN	Forrest, Lamar	52 min
Apr 12, 11:42 PM CDT	Flash Flood Warning	JAN	Forrest, Jones, Lamar, Marion	2 hr
Apr 12, 11:58 PM CDT	Areal Flood Warning	JAN	Covington, Jefferson Davis, Jones, Lamar, Lawrence, Lincoln and 1 more	6 hr
Apr 13, 12:30 AM CDT	Severe Thunderstorm Warning	JAN	Forrest, Lamar	60 min
Apr 13, 12:54 AM CDT	Flash Flood Warning	JAN	Forrest, Lamar	106 min
Apr 13, 1:05 AM CDT	Tornado Warning	JAN	Forrest	12 min
Apr 13, 1:42 AM CDT	Areal Flood Warning	JAN	Covington, Forrest, Jones, Lamar, Marion	6 hr
Apr 13, 2:38 AM CDT	Areal Flood Warning	JAN	Forrest, Lamar, Marion	6 hr
Apr 13, 4:55 AM CDT	River Flood Warning	JAN	Covington, Forrest	39 hr
Apr 13, 6:18 AM CDT	Dense Fog Advisory	JAN	Adams, Claiborne, Clarke, Copiah, Covington, Forrest and 18 more	81 min
Apr 13, 10:06 AM CDT	River Flood Warning	JAN	Lawrence	11 hr
Apr 13, 3:51 PM CDT	Severe Thunderstorm Warning	JAN	Lamar, Marion	54 min
Apr 13, 5:09 PM CDT	Severe Thunderstorm Warning	JAN	Lawrence	33 min
Apr 13, 5:32 PM CDT	Severe Thunderstorm Warning	JAN	Jefferson Davis, Simpson	43 min
Apr 13, 6:11 PM CDT	Severe Thunderstorm Warning	JAN	Simpson, Smith	49 min

Nearby

Severe Thunderstorm Warnings in Mississippi, 2009 Every severe thunderstorm warning in 2009

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.