Alert archive / Mississippi / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 108, NWS Memphis, TN

May 6, 20094 counties in Mississippi

NWS Memphis, TN issued this severe thunderstorm warning at May 6, 2009, 5:37 AM CDT for 4 counties in Mississippi. It was in force for 68 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: May 6, 2009, 5:37 AM CDT (10:37 UTC)
Expired: May 6, 2009, 6:45 AM CDT
In force: 68 min
Issued by: NWS Memphis, TN
Area: Storm-based polygon

Counties Chickasaw County, MS, Itawamba County, MS, Lee County, MS, Monroe County, MS

The radar

The Columbus AFB radar (KGWX), 35 km from the middle of the area, began a volume at 10:39 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
May 5, 10:27 PM CDT	Severe Thunderstorm Watch	SPC	8 hr
May 6, 12:54 AM CDT	Tornado Watch	SPC	5 hr

The nearest sounding before it

Little Rock, AR (KLZK), launched 00:00Z, 10.6 hours before the alert went out and 147 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: 3 J/kg
Mixed-layer CIN: -164 J/kg
Mixed-layer LCL: 617 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 61 m²/s²
0-3 km storm-relative helicity: 89 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 Memphis, TN wrote its last area forecast discussion before this severe thunderstorm warning went out at May 6, 4:42 AM CDT, 55 minutes earlier.

Area forecast discussion, May 6, 4:42 AM CDT, 55 minutes before

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Hazardous weather outlook, May 6, 5:04 AM CDT, 33 minutes before

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In the hours before

Local storm report, May 6, 4:36 AM CDT, 1 hour 1 minute before

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Special weather statement, May 6, 4:36 AM CDT, 1 hour 1 minute before

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Special weather statement, May 6, 4:47 AM CDT, 50 minutes before

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Local storm report, May 6, 4:50 AM CDT, 47 minutes before

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Local storm report, May 6, 5:09 AM CDT, 28 minutes before

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Local storm report, May 6, 5:25 AM CDT, 12 minutes before

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The office that day

Everything else NWS Memphis, TN issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 5, 10:13 PM CDT	Areal Flood Advisory	MEG	Coahoma, Panola, Quitman, Tallahatchie	62 min
May 5, 11:18 PM CDT	Severe Thunderstorm Warning	MEG	Chickasaw, Lee, Monroe, Pontotoc	42 min
May 5, 11:33 PM CDT	Areal Flood Advisory	MEG	Calhoun, Chickasaw, Lafayette, Panola, Pontotoc, Quitman and 3 more	57 min
May 6, 12:04 AM CDT	Severe Thunderstorm Warning	MEG	Calhoun, Yalobusha	41 min
May 6, 12:19 AM CDT	Severe Thunderstorm Warning	MEG	Chickasaw, Lee, Monroe, Pontotoc	21 min
May 6, 12:23 AM CDT	Flash Flood Warning	MEG	Calhoun, Chickasaw, Itawamba, Lafayette, Lee, Monroe and 3 more	12 hr
May 6, 1:20 AM CDT	Severe Thunderstorm Warning	MEG	Calhoun, Chickasaw, Monroe	70 min
May 6, 1:27 AM CDT	Flash Flood Warning	MEG	Tunica	6 hr
May 6, 2:22 AM CDT	Tornado Warning	MEG	Tunica	38 min
May 6, 2:29 AM CDT	Flash Flood Warning	MEG	Coahoma, DeSoto, Panola, Quitman, Tallahatchie, Tate and 1 more	6 hr
May 6, 2:31 AM CDT	Severe Thunderstorm Warning	MEG	DeSoto, Tunica	44 min
May 6, 2:40 AM CDT	Severe Thunderstorm Warning	MEG	Coahoma, Quitman, Tate, Tunica	50 min
May 6, 2:45 AM CDT	Severe Thunderstorm Warning	MEG	Coahoma	60 min
May 6, 2:47 AM CDT	Tornado Warning	MEG	DeSoto, Tate, Tunica	43 min
May 6, 3:15 AM CDT	Severe Thunderstorm Warning	MEG	DeSoto, Panola, Tate, Tunica	45 min
May 6, 3:24 AM CDT	Severe Thunderstorm Warning	MEG	Coahoma, Panola, Quitman, Tallahatchie, Tunica, Yalobusha	66 min
May 6, 3:29 AM CDT	Tornado Warning	MEG	Itawamba, Lee, Tishomingo	22 min
May 6, 3:46 AM CDT	Severe Thunderstorm Warning	MEG	Benton, DeSoto, Lafayette, Marshall, Panola, Tate	44 min
May 6, 4:00 AM CDT	Tornado Warning	MEG	Benton, Lafayette, Marshall, Tate, Tippah	45 min
May 6, 4:06 AM CDT	Flash Flood Warning	MEG	Alcorn, Benton, Itawamba, Lafayette, Lee, Marshall and 7 more	6 hr
May 6, 4:15 AM CDT	Severe Thunderstorm Warning	MEG	Calhoun, Lafayette, Panola, Quitman, Tallahatchie, Yalobusha	60 min
May 6, 4:18 AM CDT	Tornado Warning	MEG	Lafayette, Panola	42 min
May 6, 4:22 AM CDT	Severe Thunderstorm Warning	MEG	Alcorn, Benton, Lafayette, Marshall, Tippah, Union	53 min
May 6, 4:42 AM CDT	Severe Thunderstorm Warning	MEG	Calhoun, Chickasaw, Lafayette, Pontotoc, Union, Yalobusha	48 min
May 6, 5:03 AM CDT	Severe Thunderstorm Warning	MEG	Alcorn, Lee, Prentiss, Tippah, Tishomingo, Union	42 min
May 6, 5:07 AM CDT	Severe Thunderstorm Warning	MEG	Calhoun, Chickasaw, Lee, Pontotoc, Union	68 min
May 6, 5:10 AM CDT	Severe Thunderstorm Warning	MEG	Calhoun, Chickasaw, Tallahatchie, Yalobusha	65 min
May 6, 5:32 AM CDT	Severe Thunderstorm Warning	MEG	Alcorn, Itawamba, Lee, Prentiss, Tishomingo	43 min
May 6, 5:57 AM CDT	Severe Thunderstorm Warning	MEG	Chickasaw, Monroe	63 min
May 6, 8:21 AM CDT	Flash Flood Warning	MEG	Coahoma, Tallahatchie	114 min
May 6, 9:43 AM CDT	River Flood Warning	MEG	Monroe	32 hr
May 6, 9:43 AM CDT	River Flood Warning	MEG	Monroe	32 hr
May 6, 10:07 AM CDT	Flash Flood Warning	MEG	Coahoma, Lafayette, Panola, Quitman, Tallahatchie, Yalobusha	113 min
May 6, 10:29 AM CDT	River Flood Warning	MEG	Tate, Tunica	19 hr
May 6, 10:29 AM CDT	River Flood Warning	MEG	Quitman	22 hr
May 6, 10:29 AM CDT	River Flood Warning	MEG	Tallahatchie	22 hr
May 6, 10:29 AM CDT	River Flood Warning	MEG	Tallahatchie	22 hr
May 6, 10:29 AM CDT	River Flood Warning	MEG	Lafayette, Marshall, Union	11 hr
May 6, 12:02 PM CDT	Areal Flood Warning	MEG	Coahoma, Lafayette, Panola, Quitman, Tallahatchie, Tunica	6 hr
May 6, 12:23 PM CDT	Flash Flood Warning	MEG	Calhoun, Chickasaw, Itawamba, Lafayette, Lee, Monroe and 2 more	118 min
May 6, 2:25 PM CDT	Areal Flood Warning	MEG	Calhoun, Chickasaw, Lafayette, Lee, Monroe, Pontotoc and 1 more	8 hr
May 6, 4:34 AM CDT	Flash Flood Warning	MEG	Decatur	5 hr
May 6, 10:15 AM CDT	River Flood Warning	MEG	Dyer	8 days
May 6, 10:15 AM CDT	River Flood Warning	MEG	Crockett, Dyer, Lauderdale	11 hr
May 6, 1:21 AM CDT	Severe Thunderstorm Warning	MEG	Cross, Lee, St. Francis	69 min
May 6, 1:26 AM CDT	Severe Thunderstorm Warning	MEG	Lee, Phillips	64 min
May 6, 1:51 AM CDT	Tornado Warning	MEG	Lee, Phillips	39 min
May 6, 2:58 AM CDT	Areal Flood Advisory	MEG	Clay, Craighead, Greene, Lawrence, Poinsett, Randolph	3 hr
May 6, 5:01 AM CDT	River Flood Warning	MEG	Lee, St. Francis	6 days
May 6, 11:55 AM CDT	River Flood Warning	MEG	Mississippi	17 days

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.