Alert archive / Arkansas / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 110, NWS Memphis, TN

April 8, 2020Clay County, Greene County, Mississippi County, Arkansas

NWS Memphis, TN issued this severe thunderstorm warning at Apr 8, 2020, 10:12 PM CDT for Clay County, Greene County, Mississippi County, Arkansas. It was in force for 48 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 8, 2020, 10:12 PM CDT (03:12 UTC)
Expired: Apr 8, 2020, 11:00 PM CDT
In force: 48 min
Issued by: NWS Memphis, TN
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Clay County, AR, Greene County, AR, Mississippi County, AR

The radar

The Memphis radar (KNQA), 92 km from the middle of the area, began a volume at 03:17 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 8, 4:24 PM CDT	Tornado Watch	SPC	7 hr
Apr 8, 7:04 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Little Rock, AR (KLZK), launched 00:00Z, 3.2 hours before the alert went out and 144 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: 1810 J/kg
Mixed-layer CIN: -112 J/kg
Mixed-layer LCL: 1529 m above ground
0-6 km bulk shear: 56 kt
0-1 km storm-relative helicity: 113 m²/s²
0-3 km storm-relative helicity: 132 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 8.3

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 8, 6:28 PM CDT, 3 hours 44 minutes earlier.

Area forecast discussion, Apr 8, 6:28 PM CDT, 3 hours 44 minutes before

Area Forecast Discussion
National Weather Service Memphis TN
628 PM CDT Wed Apr 8 2020

.UPDATE...
Updated 00Z Aviation Discussion.

&&

.PREV DISCUSSION... /issued 336 PM CDT Wed Apr 8 2020/

DISCUSSION...
It's been a very pleasant day so far with temperatures in the upper
70s. A few showers are developing over northern Mississippi, nothing
severe at this time but the area has a modest amount of instability,
steep mid-level lapse rates, and wind shear will support the
potential for hail. However, the main focus will be on the overnight
hours. A front will drop down from the north into the region,
instability and and shear ramp up just ahead of the front. Short
range models continue to support to a line of severe storms with
damaging winds and large hail, with a secondary threat of tornadoes
embedded within the line. Very steep mid-level lapse rates on the
order of 7 C/km will be favorable for large hail. Hailstones over 2
inches in diameter are possible initially as it moves through
eastern Arkansas and the Missouri Bootheel. Coverage of damaging
winds could increase as the storms organize into a line. Timing
continues to stay on track, with the line moving into eastern
Arkansas and the Missouri Bootheel by 8 PM then moving our of the
area by 4 AM. The line should move through quickly and by
completely out by sunrise.

Mainly clear skies and much cooler northwest winds are expected
Thursday and Thursday night. Highs Thursday will generally be in
the low to mid 60s. By Friday, a surface high pressure will begin
to build over the area, allowing for clear skies with temperatures
in the upper 50s to lower 60s.

A weak upper-level disturbance may drag some showers eastward into
southeast Missouri and southern Illinois Saturday morning before
completely drying up, but most of the area should remain dry
Saturday. Temperatures Saturday will generally be in the mid to
upper 60s.

Our next weather-maker will move into the area Saturday night into
Sunday night. The 12Z guidance is better agreement in lifting a
surface low through the Mid-South then northward. However, the ECMWF
still seems slower than other models in bringing this system
eastward. Severe weather is definitely a possibility if models
align properly. However, this will depend on how far the warm
sector advances into the region.

Guidance gets spotty after Sunday, with some guidance bringing PoPs
to the area Tuesday night through Wednesday in association with an
upper trough to our west. Have added a slight chance of PoPs, but
we will likely remain dry through this period.

Otherwise, temperatures will be below normal through the work week.
With low temperatures in the lower 40s throughout the week.

SGW

&&

.AVIATION...
/00Z TAFs/
Expect a semi-discrete cluster of storms to develop into a broken
to solid line, racing southeast through all sites starting around
03Z and eventually moving towards TUP around 06Z. Large hail
potential will be greatest around JBR, gradually decreasing as
storms move southeast to MEM and MKL and eventually TUP. As large
hail threat decreases, strong wind threat will increase.

Skies will clear up as the front passes, around 09Z at JBR and VFR
conditions will prevail through the rest of the TAF period.

SGW

&&

.MEG WATCHES/WARNINGS/ADVISORIES...
AR...None.
MO...None.
MS...None.
TN...None.
&&

Hazardous weather outlook, Apr 8, 6:36 PM CDT, 3 hours 36 minutes before

Hazardous Weather Outlook
National Weather Service Memphis TN
636 PM CDT Wed Apr 8 2020

ARZ009-018-026>028-035-036-048-049-058-MOZ113-115-MSZ001>017-
020>024-TNZ001>004-019>022-048>055-088>092-100145-
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-
636 PM CDT Wed Apr 8 2020

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

.DAY ONE...Tonight

Severe thunderstorms are expected tonight through early Thursday
morning across Northeast Arkansas, the Missouri Bootheel, and West
Tennessee. The primary threats include large hail and damaging
winds. Tornadoes and localized heavy rainfall will be secondary
threats.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday

Strong to severe storms are possible across portions northeast
Mississippi Sunday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed this evening. Please relay any
information about observed severe weather to the NWS while
following all local, state, and CDC guidelines.

In the hours before

Local storm report, Apr 8, 9:05 PM CDT, 1 hour 7 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MEMPHIS TN
905 PM CDT WED APR 08 2020

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

0846 PM     HAIL             COTTAGE GROVE           36.38N  88.48W
04/08/2020  E1.00 INCH       HENRY              TN   SOCIAL MEDIA

&&

ARS

Special weather statement, Apr 8, 9:30 PM CDT, 42 minutes before

Special Weather Statement
National Weather Service Memphis TN
930 PM CDT Wed Apr 8 2020

TNZ020-021-051-052-090300-
Carroll TN-Madison TN-Crockett TN-Gibson TN-
930 PM CDT Wed Apr 8 2020

...A SIGNIFICANT WEATHER ADVISORY HAS BEEN ISSUED UNTIL 1000 PM CDT
FOR...

Southwestern Carroll County in western Tennessee...
Northern Madison County in western Tennessee...
Crockett County in western Tennessee...
Southern Gibson County in western Tennessee...

At 930 PM CDT...a strong thunderstorm producing pea size hail or
larger and winds at least 40 mph was located near Humboldt, moving
east at 40 mph.

People in southwestern Carroll...northern Madison...Crockett and
southern Gibson Counties should monitor this storm closely.

LAT...LON 3582 8855 3582 8858 3580 8860 3579 8860
      3579 8861 3573 8861 3559 8869 3580 8931
      3598 8919 3584 8854
TIME...MOT...LOC 0230Z 290DEG 35KT 3579 8896

MJ

Local storm report, Apr 8, 9:52 PM CDT, 20 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MEMPHIS TN
952 PM CDT WED APR 08 2020

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

0941 PM     HAIL             4 S RECTOR              36.21N  90.29W
04/08/2020  E1.00 INCH       CLAY               AR   SOCIAL MEDIA

&&

ARS

Local storm report, Apr 8, 9:55 PM CDT, 17 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MEMPHIS TN
955 PM CDT WED APR 08 2020

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

0936 PM     HAIL             4 N MARMADUKE           36.25N  90.39W
04/08/2020  E0.75 INCH       GREENE             AR   SOCIAL MEDIA

&&

ARS

Special weather statement, Apr 8, 10:02 PM CDT, 10 minutes before

Special Weather Statement
National Weather Service Memphis TN
1002 PM CDT Wed Apr 8 2020

TNZ052>054-090345-
Henderson TN-Chester TN-Madison TN-
1002 PM CDT Wed Apr 8 2020

...A SIGNIFICANT WEATHER ADVISORY HAS BEEN ISSUED UNTIL 1045 PM CDT
FOR...

Northwestern Henderson County in western Tennessee...
North central Chester County in western Tennessee...
Central Madison County in western Tennessee...

At 1001 PM CDT...a strong thunderstorm producing pea size hail or
larger and winds at least 40 mph was located near Adair, or near
Jackson, moving east at 30 mph.

People in northwestern Henderson...north central Chester and central
Madison Counties should monitor this storm closely.

LAT...LON 3550 8858 3563 8899 3570 8898 3577 8891
      3576 8850
TIME...MOT...LOC 0301Z 286DEG 25KT 3567 8892

MJ

Special weather statement, Apr 8, 10:05 PM CDT, 7 minutes before

Special Weather Statement
National Weather Service Memphis TN
1005 PM CDT Wed Apr 8 2020

TNZ049-050-089-090345-
Tipton TN-Fayette TN-Haywood TN-
1005 PM CDT Wed Apr 8 2020

...A SIGNIFICANT WEATHER ADVISORY HAS BEEN ISSUED UNTIL 1045 PM CDT
FOR...

Southeastern Tipton County in western Tennessee...
Fayette County in western Tennessee...
Southwestern Haywood County in western Tennessee...

At 1005 PM CDT...a strong thunderstorm producing wind gusts up to 50
mph was located near Arlington, or 15 miles south of Covington,
moving east at 40 mph.

People in southeastern Tipton...Fayette and southwestern Haywood
Counties should monitor this storm closely.

LAT...LON 3516 8920 3513 8964 3557 8963 3561 8918
TIME...MOT...LOC 0305Z 275DEG 34KT 3535 8961

MJ

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 8, 10:46 PM CDT	Severe Thunderstorm Warning	MEG	Benton, Marshall, Tippah	44 min
Apr 8, 11:17 PM CDT	Severe Thunderstorm Warning	MEG	Alcorn, Benton, Tippah	43 min
Apr 8, 11:34 PM CDT	Severe Thunderstorm Warning	MEG	Alcorn, Prentiss, Tippah	41 min
Apr 8, 11:52 PM CDT	Severe Thunderstorm Warning	MEG	Alcorn, Prentiss, Tippah, Tishomingo	38 min
Apr 9, 12:31 AM CDT	Severe Thunderstorm Warning	MEG	Alcorn, Tishomingo	44 min
Apr 9, 3:15 AM CDT	Special Weather Statement	MEG	Lafayette, Panola, Yalobusha	30 min
Apr 9, 3:50 AM CDT	Severe Thunderstorm Warning	MEG	Calhoun, Chickasaw, Monroe, Pontotoc	40 min
Apr 8, 7:58 PM CDT	Severe Thunderstorm Warning	MEG	Benton, Henry	47 min
Apr 8, 8:19 PM CDT	Special Weather Statement	MEG	Weakley	41 min
Apr 8, 8:33 PM CDT	Severe Thunderstorm Warning	MEG	Crockett, Dyer, Gibson, Haywood, Lauderdale	42 min
Apr 8, 8:37 PM CDT	Severe Thunderstorm Warning	MEG	Benton, Henry, Weakley	38 min
Apr 8, 9:00 PM CDT	Severe Thunderstorm Warning	MEG	Shelby, Tipton	45 min
Apr 8, 9:04 PM CDT	Severe Thunderstorm Warning	MEG	Benton, Carroll, Henry	41 min
Apr 8, 9:30 PM CDT	Special Weather Statement	MEG	Crockett	30 min
Apr 8, 9:36 PM CDT	Severe Thunderstorm Warning	MEG	Shelby	39 min
Apr 8, 10:02 PM CDT	Special Weather Statement	MEG	Madison	43 min
Apr 8, 10:05 PM CDT	Special Weather Statement	MEG	Fayette, Haywood	40 min
Apr 8, 10:17 PM CDT	Severe Thunderstorm Warning	MEG	Fayette, Shelby	28 min
Apr 8, 10:48 PM CDT	Severe Thunderstorm Warning	MEG	Lauderdale	42 min
Apr 8, 10:54 PM CDT	Severe Thunderstorm Warning	MEG	Lauderdale	51 min
Apr 8, 11:38 PM CDT	Severe Thunderstorm Warning	MEG	Lauderdale, Tipton	52 min
Apr 9, 12:08 AM CDT	Special Weather Statement	MEG	Hardeman, McNairy	52 min
Apr 8, 7:06 PM CDT	Severe Thunderstorm Warning	MEG	Craighead, Poinsett	39 min
Apr 8, 7:12 PM CDT	Special Weather Statement	MEG	Greene	33 min
Apr 8, 7:35 PM CDT	Tornado Warning	MEG	Craighead, Poinsett	25 min
Apr 8, 7:39 PM CDT	Severe Thunderstorm Warning	MEG	Clay, Greene	36 min
Apr 8, 7:53 PM CDT	Tornado Warning Tornado observed	MEG	Craighead, Poinsett	52 min
Apr 8, 7:57 PM CDT	Severe Thunderstorm Warning	MEG	Craighead, Poinsett	48 min
Apr 8, 8:36 PM CDT	Tornado Warning	MEG	Crittenden, Cross, Poinsett	26 min
Apr 8, 9:27 PM CDT	Severe Thunderstorm Warning	MEG	Clay, Greene	48 min
Apr 8, 9:55 PM CDT	Areal Flood Advisory	MEG	Clay, Greene	3 hr
Apr 8, 10:37 PM CDT	Special Weather Statement	MEG	Mississippi	23 min
Apr 8, 11:03 PM CDT	Areal Flood Advisory	MEG	Mississippi	3 hr

Nearby

Severe Thunderstorm Warnings in Arkansas, 2020 Every severe thunderstorm warning in 2020

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.