Alert archive / Mississippi / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 37, NWS Memphis, TN

April 10, 2009Monroe County, Mississippi

NWS Memphis, TN issued this severe thunderstorm warning at Apr 10, 2009, 3:25 AM CDT for Monroe County, Mississippi. It was in force for 23 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 10, 2009, 3:25 AM CDT (08:25 UTC)
Expired: Apr 10, 2009, 3:48 AM CDT
In force: 23 min
Issued by: NWS Memphis, TN
Area: Storm-based polygon

County Monroe County, MS

The radar

The Columbus AFB radar (KGWX), 14 km from the middle of the area, began a volume at 08:28 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 10, 1:43 AM CDT	Tornado Watch	SPC	5 hr

The nearest sounding before it

Little Rock, AR (KLZK), launched 00:00Z, 8.4 hours before the alert went out and 171 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: 366 J/kg
Mixed-layer CIN: -86 J/kg
Mixed-layer LCL: 734 m above ground
0-6 km bulk shear: 59 kt
0-1 km storm-relative helicity: 379 m²/s²
0-3 km storm-relative helicity: 460 m²/s²
Significant tornado parameter: 0.6
Supercell composite: 5.9

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 Apr 10, 2:52 AM CDT, 33 minutes earlier.

Area forecast discussion, Apr 10, 2:52 AM CDT, 33 minutes before

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Hazardous weather outlook, Apr 10, 3:20 AM CDT, 5 minutes before

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In the hours before

Local storm report, Apr 10, 1:33 AM CDT, 1 hour 52 minutes before

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Special weather statement, Apr 10, 1:41 AM CDT, 1 hour 44 minutes before

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Local storm report, Apr 10, 1:45 AM CDT, 1 hour 40 minutes before

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Special weather statement, Apr 10, 2:21 AM CDT, 1 hour 4 minutes before

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Special weather statement, Apr 10, 2:26 AM CDT, 59 minutes before

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Local storm report, Apr 10, 3:12 AM CDT, 13 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
Apr 10, 1:02 AM CDT	Severe Thunderstorm Warning	MEG	Benton, Lafayette, Marshall, Panola, Tate, Union	58 min
Apr 10, 1:36 AM CDT	Severe Thunderstorm Warning	MEG	Alcorn, Benton, Prentiss, Tippah, Union	54 min
Apr 10, 1:42 AM CDT	Severe Thunderstorm Warning	MEG	Calhoun, Chickasaw	63 min
Apr 10, 2:33 AM CDT	Severe Thunderstorm Warning	MEG	Monroe	57 min
Apr 10, 9:49 AM CDT	Severe Thunderstorm Warning	MEG	DeSoto, Marshall	41 min
Apr 10, 10:27 AM CDT	Severe Thunderstorm Warning	MEG	Benton	48 min
Apr 10, 11:16 AM CDT	Severe Thunderstorm Warning	MEG	Alcorn, Tippah	44 min
Apr 10, 11:30 AM CDT	Severe Thunderstorm Warning	MEG	Calhoun, Lafayette, Pontotoc, Union, Yalobusha	60 min
Apr 10, 11:40 AM CDT	Severe Thunderstorm Warning	MEG	Alcorn, Prentiss, Tishomingo	50 min
Apr 10, 11:46 AM CDT	Severe Thunderstorm Warning	MEG	Lee, Prentiss, Union	44 min
Apr 10, 11:47 AM CDT	Tornado Warning	MEG	Alcorn, Tishomingo	43 min
Apr 10, 12:09 PM CDT	Severe Thunderstorm Warning	MEG	Itawamba, Lee, Prentiss, Tishomingo	66 min
Apr 10, 12:25 PM CDT	Severe Thunderstorm Warning	MEG	Prentiss, Tishomingo	28 min
Apr 10, 12:28 PM CDT	Tornado Warning	MEG	Itawamba, Lee, Prentiss, Tishomingo	35 min
Apr 10, 12:28 PM CDT	Tornado Warning	MEG	Prentiss, Tishomingo	24 min
Apr 10, 1:07 PM CDT	Severe Thunderstorm Warning	MEG	Chickasaw, Itawamba, Lee, Monroe	47 min
Apr 10, 1:13 PM CDT	Wind Advisory	MEG	Alcorn, Benton, Calhoun, Chickasaw, Coahoma, DeSoto and 16 more	6 hr
Apr 9, 11:58 PM CDT	Severe Thunderstorm Warning	MEG	Dyer, Lake, Lauderdale, Obion	47 min
Apr 10, 12:19 AM CDT	Severe Thunderstorm Warning	MEG	Fayette, Lauderdale, Shelby, Tipton	41 min
Apr 10, 12:43 AM CDT	Severe Thunderstorm Warning	MEG	Dyer, Lake, Lauderdale, Obion	49 min
Apr 10, 12:58 AM CDT	Severe Thunderstorm Warning	MEG	Fayette, Lauderdale, Shelby, Tipton	37 min
Apr 10, 1:10 AM CDT	Severe Thunderstorm Warning	MEG	Carroll, Crockett, Dyer, Gibson, Weakley	28 min
Apr 10, 9:38 AM CDT	Severe Thunderstorm Warning	MEG	Carroll	52 min
Apr 10, 9:47 AM CDT	Severe Thunderstorm Warning	MEG	Obion, Weakley	28 min
Apr 10, 9:51 AM CDT	Severe Thunderstorm Warning	MEG	Carroll, Henry	39 min
Apr 10, 9:56 AM CDT	Tornado Warning	MEG	Carroll, Henry	49 min
Apr 10, 10:02 AM CDT	Tornado Warning	MEG	Obion	13 min
Apr 10, 10:22 AM CDT	Severe Thunderstorm Warning	MEG	Carroll, Chester, Decatur, Henderson, Madison	38 min
Apr 10, 10:34 AM CDT	Severe Thunderstorm Warning	MEG	Henry	13 min
Apr 10, 10:36 AM CDT	Severe Thunderstorm Warning	MEG	Chester, Decatur, Hardeman, Hardin, Henderson, McNairy	54 min
Apr 10, 10:40 AM CDT	Flash Flood Warning	MEG	Decatur	3 hr
Apr 10, 11:01 AM CDT	Severe Thunderstorm Warning	MEG	Decatur	29 min
Apr 10, 11:07 AM CDT	Tornado Warning	MEG	McNairy	53 min
Apr 10, 11:12 AM CDT	Tornado Warning	MEG	Decatur, Hardin	33 min
Apr 10, 11:19 AM CDT	Tornado Warning	MEG	Hardin, McNairy	41 min
Apr 9, 10:58 PM CDT	Severe Thunderstorm Warning	MEG	Clay, Randolph	47 min
Apr 9, 11:27 PM CDT	Severe Thunderstorm Warning	MEG	Clay, Craighead, Greene, Mississippi, Poinsett	48 min
Apr 9, 11:40 PM CDT	Severe Thunderstorm Warning	MEG	Clay	34 min
Apr 9, 11:42 PM CDT	Severe Thunderstorm Warning	MEG	Crittenden, Cross, Mississippi, Poinsett	48 min
Apr 10, 12:13 AM CDT	Severe Thunderstorm Warning	MEG	Craighead, Mississippi	32 min
Apr 10, 12:28 AM CDT	Severe Thunderstorm Warning	MEG	Crittenden, Cross, Mississippi, Poinsett	32 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.