Alert archive / Mississippi / Special Weather Statements in 2021

Special Weather Statement, NWS Memphis, TN

December 6, 2021Calhoun County, Lee County, Pontotoc County, Mississippi

NWS Memphis, TN issued this special weather statement at Dec 6, 2021, 5:47 AM CST for Calhoun County, Lee County, Pontotoc County, Mississippi. It was in force for 43 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Dec 6, 2021, 5:47 AM CST (11:47 UTC)
Expired: Dec 6, 2021, 6:30 AM CST
In force: 43 min
Issued by: NWS Memphis, TN
Hail: 0.25 in
Wind: 40

Counties Calhoun County, MS, Lee County, MS, Pontotoc County, MS

The radar

The Columbus AFB radar (KGWX), 100 km from the middle of the area, began a volume at 11:51 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 (KLZK), launched 00:00Z, 11.8 hours before the alert went out and 110 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: 1313 J/kg
Mixed-layer CIN: -4 J/kg
Mixed-layer LCL: 793 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 252 m²/s²
0-3 km storm-relative helicity: 326 m²/s²
Significant tornado parameter: 2.2
Supercell composite: 19.4

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Dec 6, 5:02 AM CST, 45 minutes earlier.

Area forecast discussion, Dec 6, 5:02 AM CST, 45 minutes before

Area Forecast Discussion
National Weather Service Memphis TN
502 AM CST Mon Dec 6 2021

.DISCUSSION... /issued 439 AM CST Mon Dec 6 2021/

Cool, dry and seasonal early December weather will prevail across
the Midsouth through midweek, following this morning's cold
frontal passage. Strong northerly winds will lighten overnight,
but probably not go completely calm, as surface high pressure
settles into Illinois. These light winds and dry air (lower to mid
20s dewpoints), should preclude fog/freezing fog formation late
tonight.

Fast zonal flow aloft will prevail until a weak upper trof passage
early Wednesday morning. This feature should pass through the
area dry, given the lack of return flow moisture in the Midsouth.
Main impact would be an increase in midlevel clouds.

Zonal flow an low amplitude ridging will prevail Thursday and
Friday, with strengthening low level return flow. Milder overnight
lows will accompany increased surface dewpoints. A few showers
will also be possible, aided by warm advection.

A progressive longwave trof remains on track to pass from the
plains into the MS River valley on Saturday. This feature will
bring our next appreciable rain chances, and perhaps a few strong
storms. Dry conditions should for Sunday, with upstream ridging
set to move into the Midsouth early next week.

PWB

&&

.AVIATION...

12Z TAF Set

Convection along and ahead of a cold front will continue to sink
southeastward across the Mid-South this morning. IFR/MVFR
conditions will occur with the convection. Expect conditions to
improve to VFR pretty quickly behind the front. Gusty Northerly
winds will occur behind the front as well. Expect speeds sustained
at 12-16 KTS with gusts up to 25 KTS. Speeds will begin to
diminish around sunset as the direction begins to shift to the NE.

KRM

&&

&&

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

Hazardous weather outlook, Dec 6, 4:04 AM CST, 1 hour 43 minutes before

Hazardous Weather Outlook
National Weather Service Memphis TN
404 AM CST Mon Dec 6 2021

ARZ009-018-026>028-035-036-048-049-058-MOZ113-115-MSZ001>017-
020>024-TNZ001>004-019>022-048>055-088>092-071215-
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-
404 AM CST Mon Dec 6 2021

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

.DAY ONE...Today and Tonight

There is a Marginal Risk for severe thunderstorms this morning,
along and south of the Interstate 40 corridor. A few storms could
produce damaging winds. Otherwise, localized flash flooding will
be the primary severe weather threat.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday

Strong thunderstorms will be possible Friday night into early
Saturday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated at this time.

PWB

In the hours before

Special weather statement, Dec 6, 4:45 AM CST, 1 hour 2 minutes before

Special Weather Statement
National Weather Service Memphis TN
445 AM CST Mon Dec 6 2021

MSZ002>005-061115-
Tippah MS-Marshall MS-Benton MS-Alcorn MS-
445 AM CST Mon Dec 6 2021

...Strong thunderstorms will impact portions of southeastern
Marshall, Tippah, Benton and western Alcorn Counties through 515 AM
CST...

At 445 AM CST, Doppler radar was tracking strong thunderstorms along
a line extending from near Canaan to 6 miles south of Snow Lake
Shores to near Bethlehem. Movement was east at 55 mph.

HAZARD...Winds in excess of 40 mph and pea size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor damage to outdoor objects is
         possible.

Locations impacted include...
Ripley, Blue Mountain, Snow Lake Shores, Canaan, Theo, Gravestown,
Walnut, Hickory Flat, Ashland, Potts Camp, Falkner, Dumas,
Chalybeate, Murry, Brody, Spring Hill, Collinstown, New Canaan, Lake
Center and Whitten Town.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3472 8872 3460 8884 3459 8950 3476 8930
      3499 8922 3500 8865
TIME...MOT...LOC 1045Z 271DEG 49KT 3498 8917 3473 8922 3461 8936

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...40 MPH

MJ

Special weather statement, Dec 6, 4:58 AM CST, 49 minutes before

Special Weather Statement
National Weather Service Memphis TN
458 AM CST Mon Dec 6 2021

MSZ002-012>015-061130-
Lafayette MS-Pontotoc MS-Marshall MS-Union MS-Panola MS-
458 AM CST Mon Dec 6 2021

...Strong thunderstorms will impact portions of Lafayette,
northwestern Pontotoc, Union, southeastern Marshall and southeastern
Panola Counties through 530 AM CST...

At 458 AM CST, Doppler radar was tracking strong thunderstorms along
a line extending from 6 miles east of Bethlehem to near George Payne
State Park. Movement was east at 45 mph.

HAZARD...Winds in excess of 40 mph and half inch hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor damage to outdoor objects is
         possible.

Locations impacted include...
Oxford, New Albany, Water Valley, Holly Springs National Forest,
Pope, Cambridge, Keownville, Etta, Springdale, Burgess, Bethlehem,
Tula, Denmark, Pinedale, Paris, Thaxton, Courtland, Myrtle, Abbeville
and Taylor.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3419 8951 3419 8972 3422 8997 3459 8950
      3460 8875 3416 8944 3416 8951
TIME...MOT...LOC 1058Z 272DEG 40KT 3458 8923 3419 8989

MAX HAIL SIZE...0.50 IN
MAX WIND GUST...40 MPH

MJ

Special weather statement, Dec 6, 5:11 AM CST, 36 minutes before

Special Weather Statement
National Weather Service Memphis TN
511 AM CST Mon Dec 6 2021

MSZ004>006-009-TNZ091-092-061145-
Tippah MS-Tishomingo MS-Alcorn MS-Prentiss MS-McNairy TN-Hardin TN-
511 AM CST Mon Dec 6 2021

...Strong thunderstorms will impact portions of Tippah, northwestern
Tishomingo, northwestern Prentiss, Alcorn, southern McNairy and
southwestern Hardin Counties through 545 AM CST...

At 510 AM CST, Doppler radar was tracking strong thunderstorms along
a line extending from near Theo to 7 miles northwest of Jumpertown to
near Blue Mountain. Movement was east at 50 mph.

HAZARD...Winds in excess of 40 mph and pea size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor damage to outdoor objects is
         possible.

Locations impacted include...
Corinth, Booneville, Ripley, Pickwick Landing State Park, Big Hill
Pond State Park, Burnsville, Blue Mountain, Jumpertown, Glen,
Pickwick Dam, Thrashers, Theo, Shiloh, Pineflat, Hinkle, Leedy,
Farmington, Eastview, Michie and Dumas.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3480 8831 3459 8858 3460 8909 3467 8909
      3484 8886 3500 8880 3500 8879 3506 8878
      3518 8812
TIME...MOT...LOC 1110Z 268DEG 45KT 3499 8869 3478 8876 3460 8902

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...40 MPH

MJ

Special weather statement, Dec 6, 5:15 AM CST, 32 minutes before

Special Weather Statement
National Weather Service Memphis TN
515 AM CST Mon Dec 6 2021

MSZ020-021-061145-
Tallahatchie MS-Yalobusha MS-
515 AM CST Mon Dec 6 2021

...A strong thunderstorm will impact portions of western Yalobusha
and east central Tallahatchie Counties through 545 AM CST...

At 515 AM CST, Doppler radar was tracking a strong thunderstorm near
Paynes, or 7 miles southwest of Charleston, moving east at 50 mph.

HAZARD...Winds in excess of 40 mph and penny size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor damage to outdoor objects is
         possible.

Locations impacted include...
Charleston, Coffeeville, Paynes, Scobey, Velma, Oakland, Bryant,
Leverett, Tippo, Effie, Tillatoba and Rosebloom.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3386 9021 3399 9023 3413 8965 3387 8965
      3387 8977 3390 8977 3390 8992 3386 8993
TIME...MOT...LOC 1115Z 268DEG 45KT 3393 9014

MAX HAIL SIZE...0.75 IN
MAX WIND GUST...40 MPH

MJ

Local storm report, Dec 6, 5:44 AM CST, 3 minutes before

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Special weather statement, Dec 6, 5:47 AM CST, 0 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 6, 4:45 AM CST	Special Weather Statement	MEG	Benton, Tippah	30 min
Dec 6, 4:58 AM CST	Special Weather Statement	MEG	Lafayette, Union	32 min
Dec 6, 5:09 AM CST	Severe Thunderstorm Warning	MEG	Lafayette, Marshall, Pontotoc, Union	36 min
Dec 6, 5:11 AM CST	Special Weather Statement	MEG	Alcorn, Tippah	34 min
Dec 6, 5:15 AM CST	Special Weather Statement	MEG	Tallahatchie, Yalobusha	30 min
Dec 6, 5:35 AM CST	Severe Thunderstorm Warning	MEG	Itawamba, Lee, Pontotoc, Prentiss, Tippah, Tishomingo and 1 more	40 min
Dec 6, 6:15 AM CST	Special Weather Statement	MEG	Itawamba, Lee	30 min
Dec 6, 6:32 AM CST	Special Weather Statement	MEG	Calhoun, Chickasaw	28 min
Dec 6, 7:04 AM CST	Areal Flood Advisory	MEG	Calhoun, Chickasaw, Yalobusha	3 hr
Dec 6, 2:55 AM CST	Special Weather Statement	MEG	Lake, Obion	35 min
Dec 6, 3:10 AM CST	Special Weather Statement	MEG	Shelby, Tipton	35 min
Dec 6, 3:28 AM CST	Special Weather Statement	MEG	Dyer, Weakley	32 min
Dec 6, 3:44 AM CST	Severe Thunderstorm Warning	MEG	Benton, Henry, Weakley	31 min
Dec 6, 3:45 AM CST	Special Weather Statement	MEG	Fayette, Haywood, Madison	30 min
Dec 6, 4:25 AM CST	Areal Flood Advisory	MEG	Crockett, Haywood, Lauderdale, Tipton	2 hr
Dec 6, 4:36 AM CST	Special Weather Statement	MEG	Carroll, Henderson, Madison	24 min
Dec 6, 1:36 AM CST	Special Weather Statement	MEG	Clay	24 min
Dec 6, 2:00 AM CST	Special Weather Statement	MEG	Clay	30 min
Dec 5, 6:54 PM CST	Special Weather Statement	MEG	Dunklin	36 min
Dec 6, 2:29 AM CST	Special Weather Statement	MEG	Dunklin, Pemiscot	31 min

Nearby

Special Weather Statements in Mississippi, 2021 Every special weather statement in 2021

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.