Alert archive / Mississippi / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 339, NWS Memphis, TN

December 1, 2018DeSoto County, Tate County, Tunica County, Mississippi

NWS Memphis, TN issued this severe thunderstorm warning at Dec 1, 2018, 5:56 AM CST for DeSoto County, Tate County, Tunica County, Mississippi. It was in force for 19 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 1, 2018, 5:56 AM CST (11:56 UTC)
Expired: Dec 1, 2018, 6:15 AM CST
In force: 19 min
Issued by: NWS Memphis, TN
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties DeSoto County, MS, Tate County, MS, Tunica County, MS

The radar

The Memphis radar (KNQA), 72 km from the middle of the area, began a volume at 11:57 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 nearest sounding before it

Little Rock, AR (KBYH), launched 00:00Z, 11.9 hours before the alert went out and 18 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: 389 J/kg
Mixed-layer CIN: -65 J/kg
Mixed-layer LCL: 782 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: 60 m²/s²
0-3 km storm-relative helicity: 161 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

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 Memphis, TN wrote its last area forecast discussion before this severe thunderstorm warning went out at Dec 1, 5:51 AM CST, 5 minutes earlier.

Area forecast discussion, Dec 1, 5:51 AM CST, 5 minutes before

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Hazardous weather outlook, Dec 1, 5:33 AM CST, 23 minutes before

Hazardous Weather Outlook
National Weather Service Memphis TN
533 AM CST Sat Dec 1 2018

ARZ009-018-026>028-035-036-048-049-058-MOZ113-115-MSZ001>017-
020>024-TNZ001>004-019>022-048>055-088>092-021345-
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-
533 AM CST Sat Dec 1 2018

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

.DAY ONE...Today and Tonight

A few strong to severe storms will remain possible early this
morning, mainly in East Arkansas. Damaging winds will be the
primary threat.

Additional strong storms may develop this afternoon in West
Tennessee near the Tennessee River.

.DAYS TWO THROUGH SEVEN...Sunday through Friday

The probability of widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated at this time.

In the hours before

Special weather statement, Dec 1, 2:36 AM CST, 3 hours 20 minutes before

Special Weather Statement
National Weather Service Memphis TN
236 AM CST SAT DEC 1 2018

ARZ009-018-MOZ113-010915-
Greene AR-Clay AR-Dunklin MO-
236 AM CST SAT DEC 1 2018

...A SIGNIFICANT WEATHER ADVISORY HAS BEEN ISSUED UNTIL 315 AM CST
FOR...

Northwestern Greene County in eastern Arkansas...
Clay County in eastern Arkansas...
Northeastern Dunklin County in southeastern Missouri...

At 235 AM CST...a strong thunderstorm producing winds at least 40 mph
was located over Knobel, or near Corning, moving northeast at 55 mph.

Very heavy rain is also possible with this thunderstorm.

People in northwestern Greene...Clay and northeastern Dunklin
Counties should monitor this storm closely.

LAT...LON 3663 8996 3635 8996 3611 9077 3615 9075
      3615 9081 3629 9081 3630 9079 3628 9075
      3641 9075 3643 9078 3650 9078 3650 9022
      3654 9021 3655 9019 3659 9019 3663 9015
TIME...MOT...LOC 0835Z 240DEG 48KT 3632 9057

Local storm report, Dec 1, 4:05 AM CST, 1 hour 51 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MEMPHIS TN
405 AM CST SAT DEC 01 2018

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0338 AM     TSTM WND GST     1 NW MALDEN             36.60N  89.99W
12/01/2018  M60 MPH          DUNKLIN            MO   AWOS

&&

AC3

The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 1, 6:17 AM CST	Special Weather Statement	MEG	Shelby	28 min
Dec 1, 6:22 AM CST	Special Weather Statement	MEG	Lauderdale	53 min
Dec 1, 6:50 AM CST	Special Weather Statement	MEG	Dyer, Gibson, Obion, Weakley	55 min
Dec 1, 7:39 AM CST	Special Weather Statement	MEG	Fayette	51 min
Dec 1, 9:02 AM CST	Special Weather Statement	MEG	Hardeman	43 min
Dec 1, 9:14 AM CST	Special Weather Statement	MEG	Henderson, Madison	46 min
Dec 1, 9:24 AM CST	Special Weather Statement	MEG	Chester, Hardeman, McNairy	51 min
Dec 1, 10:09 AM CST	Special Weather Statement	MEG	Decatur, Hardin, McNairy	66 min
Dec 1, 10:56 AM CST	Special Weather Statement	MEG	Decatur, Hardin	49 min
Dec 1, 11:21 AM CST	River Flood Warning	MEG	Crockett, Dyer, Lauderdale	9 hr
Dec 1, 1:18 PM CST	Special Weather Statement	MEG	Hardeman	27 min
Dec 1, 1:37 PM CST	Special Weather Statement	MEG	Hardeman	38 min
Dec 1, 1:48 PM CST	Special Weather Statement	MEG	Carroll	42 min
Dec 1, 2:24 PM CST	Special Weather Statement	MEG	Chester, Decatur, Henderson	51 min
Dec 1, 6:24 AM CST	Special Weather Statement	MEG	Tunica	36 min
Dec 1, 6:36 AM CST	Severe Thunderstorm Warning	MEG	Coahoma, Quitman	39 min
Dec 1, 6:52 AM CST	Special Weather Statement	MEG	Tate	53 min
Dec 1, 7:08 AM CST	Severe Thunderstorm Warning	MEG	Coahoma, Panola, Quitman, Tunica	52 min
Dec 1, 7:23 AM CST	Tornado Warning	MEG	Coahoma, Quitman	37 min
Dec 1, 7:53 AM CST	Severe Thunderstorm Warning	MEG	Lafayette, Marshall, Panola, Tate	52 min
Dec 1, 8:41 AM CST	Severe Thunderstorm Warning	MEG	Benton, Lafayette, Marshall, Tippah, Union	49 min
Dec 1, 9:10 AM CST	Special Weather Statement	MEG	Panola	35 min
Dec 1, 3:36 PM CST	Special Weather Statement	MEG	Tishomingo	24 min
Dec 1, 3:43 PM CST	Special Weather Statement	MEG	Itawamba	47 min
Dec 1, 3:51 PM CST	Special Weather Statement	MEG	Monroe	54 min
Nov 30, 9:30 PM CST	Special Weather Statement	MEG	Mississippi	30 min
Dec 1, 2:36 AM CST	Special Weather Statement	MEG	Clay	39 min
Dec 1, 3:01 AM CST	Severe Thunderstorm Warning	MEG	Clay	29 min
Dec 1, 3:08 AM CST	Severe Thunderstorm Warning	MEG	Clay, Craighead, Greene	52 min
Dec 1, 3:24 AM CST	Severe Thunderstorm Warning	MEG	Clay	21 min
Dec 1, 6:00 AM CST	Special Weather Statement	MEG	Phillips	30 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.