Alert archive / Mississippi / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 344, NWS Memphis, TN

December 31, 2018Chickasaw County, Itawamba County, Monroe County, Mississippi

NWS Memphis, TN issued this severe thunderstorm warning at Dec 31, 2018, 12:59 PM CST for Chickasaw County, Itawamba County, Monroe 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: Dec 31, 2018, 12:59 PM CST (18:59 UTC)
Expired: Dec 31, 2018, 1:45 PM CST
In force: 46 min
Issued by: NWS Memphis, TN
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

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

The radar

The Columbus AFB radar (KGWX), 29 km from the middle of the area, began a volume at 18:59 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
Dec 31, 11:47 AM CST	Tornado Watch	SPC	5 hr

The nearest sounding before it

Little Rock, AR (KBYH), launched 12:00Z, 7.0 hours before the alert went out and 153 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: 414 m above ground
0-6 km bulk shear: 88 kt
0-1 km storm-relative helicity: 294 m²/s²
0-3 km storm-relative helicity: 340 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.4

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 Dec 31, 11:37 AM CST, 1 hour 22 minutes earlier.

Area forecast discussion, Dec 31, 11:37 AM CST, 1 hour 22 minutes before

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Hazardous weather outlook, Dec 31, 3:35 AM CST, 9 hours 24 minutes before

Hazardous Weather Outlook
National Weather Service Memphis TN
335 AM CST Mon Dec 31 2018

ARZ009-018-026>028-035-036-048-049-058-MOZ113-115-MSZ001>017-
020>024-TNZ001>004-019>022-048>055-088>092-011145-
Alcorn-Benton MS-Benton TN-Calhoun-Carroll-Chester-Chickasaw-Clay-
Coahoma-Craighead-Crittenden-Crockett-Cross-DeSoto-Decatur-
Dunklin-Dyer-Fayette-Gibson-Greene-Hardeman-Hardin-Haywood-
Henderson-Henry-Itawamba-Lafayette-Lake-Lauderdale-Lee AR-Lee MS-
Madison-Marshall-McNairy-Mississippi-Monroe-Obion-Panola-Pemiscot-
Phillips-Poinsett-Pontotoc-Prentiss-Quitman-Shelby-St. Francis-
Tallahatchie-Tate-Tippah-Tipton-Tishomingo-Tunica-Union-Weakley-
Yalobusha-
335 AM CST Mon Dec 31 2018

This hazardous weather outlook is for portions of East Arkansas...
the Missouri Bootheel...North Mississippi...and West Tennessee.

.DAY ONE...Today and Tonight

Severe thunderstorms are possible during the day today, east of
the Mississippi River. Damaging winds will remain the primary
severe weather threat. An isolated tornado or two is possible.
Localized heavy rainfall is also possible.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed later today.

In the hours before

Special weather statement, Dec 31, 11:57 AM CST, 1 hour 2 minutes before

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Special weather statement, Dec 31, 12:01 PM CST, 58 minutes before

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Special weather statement, Dec 31, 12:08 PM CST, 51 minutes before

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Special weather statement, Dec 31, 12:39 PM CST, 20 minutes before

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Special weather statement, Dec 31, 12:41 PM CST, 18 minutes before

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Special weather statement, Dec 31, 12:42 PM CST, 17 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
Dec 30, 8:53 PM CST	River Flood Warning	MEG	Crockett, Dyer, Lauderdale	25 hr
Dec 31, 7:01 AM CST	Special Weather Statement	MEG	Fayette	29 min
Dec 31, 10:08 AM CST	Special Weather Statement	MEG	Lauderdale, Shelby, Tipton	37 min
Dec 31, 10:41 AM CST	Special Weather Statement	MEG	Crockett, Dyer, Lake, Lauderdale, Obion	49 min
Dec 31, 10:45 AM CST	Special Weather Statement	MEG	Fayette, Haywood, Tipton	45 min
Dec 31, 11:08 AM CST	River Flood Advisory	MEG	Lake	25 hr
Dec 31, 11:12 AM CST	River Flood Advisory	MEG	Shelby	31 days
Dec 31, 11:12 AM CST	Special Weather Statement	MEG	Crockett, Gibson, Obion, Weakley	48 min
Dec 31, 11:32 AM CST	Special Weather Statement	MEG	Hardeman, Madison	43 min
Dec 31, 11:57 AM CST	Special Weather Statement	MEG	Carroll, Henry	48 min
Dec 31, 12:01 PM CST	Special Weather Statement	MEG	Chester, Henderson, McNairy	44 min
Dec 31, 12:39 PM CST	Special Weather Statement	MEG	Benton	36 min
Dec 31, 12:41 PM CST	Special Weather Statement	MEG	Decatur, Hardin	49 min
Dec 31, 1:12 AM CST	Areal Flood Advisory	MEG	Alcorn, Tippah	2 hr
Dec 31, 9:38 AM CST	Special Weather Statement	MEG	Tunica	22 min
Dec 31, 10:25 AM CST	Special Weather Statement	MEG	DeSoto, Panola, Quitman, Tallahatchie, Tate, Tunica	50 min
Dec 31, 10:52 AM CST	Special Weather Statement	MEG	Panola, Tallahatchie, Yalobusha	38 min
Dec 31, 11:34 AM CST	Special Weather Statement	MEG	Calhoun, Lafayette, Pontotoc, Union, Yalobusha	41 min
Dec 31, 12:08 PM CST	Special Weather Statement	MEG	Alcorn, Calhoun, Chickasaw, Lee, Pontotoc, Prentiss and 2 more	37 min
Dec 31, 12:42 PM CST	Special Weather Statement	MEG	Alcorn, Chickasaw, Itawamba, Lee, Monroe, Prentiss and 1 more	48 min
Dec 31, 1:30 PM CST	River Flood Warning	MEG	Tate, Tunica	19 hr
Dec 31, 1:43 PM CST	Special Weather Statement	MEG	Monroe	17 min

Nearby

Severe Thunderstorm Warnings in Mississippi, 2018 Every severe thunderstorm warning in 2018

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.