Alert archive / Tennessee / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 142, NWS Memphis, TN

October 21, 20194 counties in Mississippi; 7 counties in Tennessee

NWS Memphis, TN issued this severe thunderstorm warning at Oct 21, 2019, 7:01 AM CDT for 4 counties in Mississippi; 7 counties in Tennessee. It was in force for 44 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
Oct 21, 2019, 7:01 AM CDT (12:01 UTC)
Expired
Oct 21, 2019, 7:45 AM CDT
In force
44 min
Issued by
NWS Memphis, TN
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Benton County, MS, DeSoto County, MS, Marshall County, MS, Tippah County, MS, Fayette County, TN, Hardeman County, TN, Haywood County, TN, Lauderdale County, TN, Madison County, TN, Shelby County, TN, Tipton County, TN

The radar

The Memphis radar (KNQA), 46 km from the middle of the area, began a volume at 12:02 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.

IssuedProductOfficeLasted
Oct 21, 3:06 AM CDTTornado WatchSPC6 hr

The nearest sounding before it

Jackson, MS (KJAN), launched 12:00Z, 0.0 hours before the alert went out and 327 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-pSkew-T log-p diagram, Jackson, MS at 12:00Z on 2019-10-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 12 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Jackson, MS at 12:00Z on 2019-10-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 241 square meters per square second.1939587897117Sfc1 km3 km6 km9 kmRMLM
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
12 J/kg
Mixed-layer CIN
-546 J/kg
Mixed-layer LCL
1483 m above ground
0-6 km bulk shear
45 kt
0-1 km storm-relative helicity
241 m²/s²
0-3 km storm-relative helicity
316 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 Oct 21, 6:50 AM CDT, 11 minutes earlier.

Area forecast discussion, Oct 21, 6:50 AM CDT, 11 minutes before
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Hazardous weather outlook, Oct 21, 3:52 AM CDT, 3 hours 9 minutes before
Hazardous Weather Outlook
National Weather Service Memphis TN
352 AM CDT Mon Oct 21 2019

ARZ009-018-026>028-035-036-048-049-058-MOZ113-115-MSZ001>017-
020>024-TNZ001>004-019>022-048>055-088>092-221200-
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-
352 AM CDT Mon Oct 21 2019

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

.DAY ONE...Today and Tonight

Strong to severe storms will occur across the Mid-South today.
Damaging winds will be the main threat from the storms. Although,
can't rule out an isolated tornado occurring this morning. In
addition, locally heavy rainfall could lead to flash flooding.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday

The probability of widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated at this time.

KRM

In the hours before

Special weather statement, Oct 21, 3:48 AM CDT, 3 hours 13 minutes before
Special Weather Statement
National Weather Service Memphis TN
348 AM CDT Mon Oct 21 2019

ARZ009-018-210930-
Greene AR-Clay AR-
348 AM CDT Mon Oct 21 2019

...A SIGNIFICANT WEATHER ADVISORY HAS BEEN ISSUED UNTIL 430 AM CDT
FOR...

Greene County in eastern Arkansas...
Clay County in eastern Arkansas...

At 348 AM CDT...strong thunderstorms producing winds at least 40 mph
was located along a line extending from near Pocahontas to Fontaine.
Movement was northeast at 60 mph.

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

LAT...LON 3650 9029 3608 9032 3600 9037 3596 9061
      3597 9085 3598 9084 3599 9086 3608 9082
      3611 9077 3615 9075 3616 9081 3629 9081
      3630 9079 3628 9078 3628 9075 3641 9075
      3643 9078 3649 9077 3650 9078
TIME...MOT...LOC 0848Z 243DEG 51KT 3627 9103 3603 9082
Special weather statement, Oct 21, 5:01 AM CDT, 2 hours before
Special Weather Statement
National Weather Service Memphis TN
501 AM CDT Mon Oct 21 2019

ARZ009-MOZ113-115-TNZ001-019-211030-
Clay AR-Pemiscot MO-Dunklin MO-Lake TN-Dyer TN-
501 AM CDT Mon Oct 21 2019

...A SIGNIFICANT WEATHER ADVISORY HAS BEEN ISSUED UNTIL 530 AM CDT
FOR...

Southeastern Clay County in eastern Arkansas...
Pemiscot County in southeastern Missouri...
Southeastern Dunklin County in southeastern Missouri...
Southwestern Lake County in western Tennessee...
Northwestern Dyer County in western Tennessee...

At 500 AM CDT...a line of strong thunderstorms producing winds in
excess of 30 mph was located along a line extending from near
Holcomb to near Gosnell. Movement was east at 50 mph.

Very heavy rain along with continuous cloud to ground lightning are
also possible with this thunderstorm.

People in southeastern Clay...Pemiscot...southeastern Dunklin...
southwestern Lake and northwestern Dyer Counties should monitor this
storm closely.

LAT...LON 3640 8997 3639 8997 3639 8975 3643 8973
      3640 8967 3641 8960 3601 8952 3600 9004
      3636 9022 3645 8996
TIME...MOT...LOC 1000Z 263DEG 42KT 3633 9004 3602 8993
Local storm report, Oct 21, 5:42 AM CDT, 1 hour 19 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MEMPHIS TN
542 AM CDT MON OCT 21 2019

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

0430 AM     TSTM WND DMG     MONETTE                 35.89N  90.34W
10/21/2019                   CRAIGHEAD          AR   PUBLIC

            TREE DOWN IN MONETTE.

&&

MJ

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 21, 5:56 AM CDTSevere Thunderstorm WarningMEGDeSoto, Tunica49 min
Oct 21, 6:20 AM CDTSevere Thunderstorm WarningMEGDeSoto, Marshall, Tunica40 min
Oct 21, 8:19 AM CDTSpecial Weather StatementMEGCalhoun, Lafayette, Pontotoc, Yalobusha41 min
Oct 21, 9:02 AM CDTSpecial Weather StatementMEGPontotoc28 min
Oct 21, 10:51 AM CDTSpecial Weather StatementMEGMonroe24 min
Oct 21, 4:26 AM CDTSevere Thunderstorm WarningMEGLauderdale, Tipton49 min
Oct 21, 5:44 AM CDTSevere Thunderstorm WarningMEGTipton46 min
Oct 21, 6:13 AM CDTSevere Thunderstorm WarningMEGDyer, Lauderdale, Shelby, Tipton47 min
Oct 21, 6:23 AM CDTTornado WarningMEGLauderdale, Tipton25 min
Oct 21, 6:26 AM CDTTornado WarningMEGShelby, Tipton34 min
Oct 21, 6:26 AM CDTTornado WarningMEGLauderdale, Tipton25 min
Oct 21, 6:40 AM CDTTornado WarningMEGShelby20 min
Oct 21, 7:00 AM CDTSevere Thunderstorm WarningMEGCrockett, Dyer, Gibson, Haywood, Lake, Lauderdale and 3 more45 min
Oct 21, 7:09 AM CDTTornado WarningMEGFayette, Hardeman14 min
Oct 21, 7:55 AM CDTSpecial Weather StatementMEGBenton, Carroll, Gibson, Henry, Weakley50 min
Oct 21, 3:41 AM CDTSevere Thunderstorm WarningMEGCraighead, Crittenden, Cross, Greene, Lee, Poinsett and 1 more49 min
Oct 21, 3:48 AM CDTSpecial Weather StatementMEGClay, Greene42 min
Oct 21, 5:05 AM CDTSevere Thunderstorm WarningMEGCrittenden, Cross, Lee, Poinsett, St. Francis40 min
Oct 21, 5:11 AM CDTSevere Thunderstorm WarningMEGCraighead, Mississippi, Poinsett49 min
Oct 21, 5:52 AM CDTTornado WarningMEGMississippi, Poinsett12 min

Nearby

Severe Thunderstorm Warnings in Tennessee, 2019Severe Thunderstorm Warnings in Mississippi, 2019Every severe thunderstorm warning in 2019

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.