Alert archive / Mississippi / Special Weather Statements in 2021

Special Weather Statement, NWS Memphis, TN

December 29, 2021Calhoun County, Mississippi

NWS Memphis, TN issued this special weather statement at Dec 29, 2021, 4:36 PM CST for Calhoun County, Mississippi. It was in force for 24 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 29, 2021, 4:36 PM CST (22:36 UTC)
Expired: Dec 29, 2021, 5:00 PM CST
In force: 24 min
Issued by: NWS Memphis, TN
Hail: 0.25 in
Wind: 40

County Calhoun County, MS

The radar

The Columbus AFB radar (KGWX), 96 km from the middle of the area, began a volume at 22:39 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 12:00Z, 10.6 hours before the alert went out and 105 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: 1900 m above ground
0-6 km bulk shear: 68 kt
0-1 km storm-relative helicity: 131 m²/s²
0-3 km storm-relative helicity: 106 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 29, 3:06 PM CST, 1 hour 30 minutes earlier.

Area forecast discussion, Dec 29, 3:06 PM CST, 1 hour 30 minutes before

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</head>
<body>
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    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
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        The site you requested is temporarily down for maintenance or an unexpected outage.
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Hazardous weather outlook, Dec 29, 3:10 PM CST, 1 hour 26 minutes before

Hazardous Weather Outlook
National Weather Service Memphis TN
310 PM CST Wed Dec 29 2021

ARZ009-018-026>028-035-036-048-049-058-MOZ113-115-MSZ001>017-
020>024-TNZ001>004-019>022-048>055-088>092-302315-
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-
310 PM CST Wed Dec 29 2021

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

.DAY ONE...This Afternoon and Tonight

There is a Enhanced Risk of severe thunderstorm across the
southern half of the Mid-South this afternoon and tonight. The
main threats are damaging winds and flash flooding. Tornadoes and
hail are secondary threats.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday

Another round of severe thunderstorms is possible Saturday across
most of the Mid South.

A Slight Risk of Excessive Rainfall is in place over portions of
the Mid South Friday night into Saturday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed today and Saturday in support of
severe weather. Please relay any information about observed
severe weather to the NWS while following all local, state, and
CDC guidelines.

In the hours before

Special weather statement, Dec 29, 1:59 PM CST, 2 hours 37 minutes before

Special Weather Statement
National Weather Service Memphis TN
159 PM CST Wed Dec 29 2021

MSZ001-TNZ088-292030-
DeSoto MS-Shelby TN-
159 PM CST Wed Dec 29 2021

...Strong thunderstorms will impact portions of DeSoto and
southeastern Shelby Counties through 230 PM CST...

At 158 PM CST, Doppler radar was tracking strong thunderstorms along
a line extending from near Midtown Memphis to Eudora. Movement was
southeast at 25 mph.

HAZARD...Winds in excess of 40 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

Locations impacted include...
Bartlett, Southaven, Collierville, Germantown, Olive Branch, Horn
Lake, Hernando, T O Fuller State Park, Cordova, Memphis, Walls, Lake
Cormorant, Southwest Memphis, Lynchburg, Eudora, Southeast Memphis,
Downtown Memphis, Whitehaven, Frayser and Midtown Memphis.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

A Tornado Watch remains in effect until 700 PM CST for eastern
Arkansas...northwestern Mississippi...and western Tennessee.

&&

LAT...LON 3491 9025 3495 9025 3496 9026 3512 9012
      3512 9009 3513 9007 3515 9007 3516 9009
      3525 9001 3511 8964 3510 8964 3477 8990
      3472 8996 3471 9003 3471 9005 3481 9020
      3486 9020 3486 9029 3487 9031
TIME...MOT...LOC 1958Z 295DEG 22KT 3515 8993 3485 9018

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH

SMW

Local storm report, Dec 29, 3:11 PM CST, 1 hour 25 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MEMPHIS TN
311 PM CST WED DEC 29 2021

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

0305 PM     FLASH FLOOD      BROWNSVILLE             35.59N  89.25W
12/29/2021                   HAYWOOD            TN   AMATEUR RADIO

            MAIN STREET AT THE RAILROAD OVERPASS CLOSED DUE TO
            FLOODING.

&&

Local storm report, Dec 29, 4:00 PM CST, 36 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MEMPHIS TN
400 PM CST WED DEC 29 2021

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

0155 PM     TSTM WND DMG     MILLINGTON              35.33N  89.89W
12/29/2021                   SHELBY             TN   FIRE DEPT/RESCUE

            A LARGE TREE FELL ONTO NAVY ROAD AT SINGLETON AVE.

&&

Special weather statement, Dec 29, 4:36 PM CST, 0 minutes before

Special Weather Statement
National Weather Service Memphis TN
436 PM CST Wed Dec 29 2021

MSZ015-021>023-292300-
Pontotoc MS-Calhoun MS-Yalobusha MS-Chickasaw MS-
436 PM CST Wed Dec 29 2021

...A strong thunderstorm will impact portions of northwestern
Chickasaw, southeastern Yalobusha, central Calhoun and southwestern
Pontotoc Counties through 500 PM CST...

At 435 PM CST, Doppler radar was tracking a strong thunderstorm near
Bruce, or 18 miles southeast of Water Valley, moving northeast at 35
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...
Bruce, Pittsboro, Banner, Randolph, New Houlka, Robbs, Benwood,
Bounds, Thorn, Reid, Loyd, Ellard, Pannell, Thelma, Shepherd,
Matthews, Skuna, Tyson, Retreat and Sarepta.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

A Tornado Watch remains in effect until 700 PM CST for northeastern
and northwestern Mississippi.

&&

LAT...LON 3387 8951 3387 8953 3401 8962 3416 8933
      3416 8925 3420 8925 3426 8914 3395 8898
      3385 8951
TIME...MOT...LOC 2235Z 245DEG 33KT 3397 8941

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

SMW

The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 28, 9:46 PM CST	Areal Flood Advisory	MEG	Chickasaw, Itawamba, Monroe	3 hr
Dec 28, 10:22 PM CST	Special Weather Statement	MEG	Monroe	38 min
Dec 28, 10:37 PM CST	Flash Flood Warning	MEG	Monroe	3 hr
Dec 29, 9:00 AM CST	Areal Flood Advisory	MEG	Calhoun, Chickasaw, Lee, Pontotoc, Yalobusha	3 hr
Dec 29, 9:17 AM CST	Flash Flood Warning	MEG	Calhoun, Yalobusha	3 hr
Dec 29, 12:14 PM CST	Areal Flood Warning	MEG	Calhoun, Chickasaw, Lee, Pontotoc, Yalobusha	3 hr
Dec 29, 1:59 PM CST	Special Weather Statement	MEG	DeSoto	31 min
Dec 29, 4:53 PM CST	Severe Thunderstorm Warning Considerable damage threat	MEG	Calhoun, Chickasaw, Itawamba, Lee, Monroe, Pontotoc	52 min
Dec 29, 4:58 PM CST	Severe Thunderstorm Warning Considerable damage threat	MEG	Prentiss, Tishomingo	14 min
Dec 29, 5:02 PM CST	Areal Flood Advisory	MEG	Prentiss	2 hr
Dec 29, 5:06 PM CST	Tornado Warning	MEG	Calhoun, Chickasaw	39 min
Dec 29, 5:29 PM CST	Severe Thunderstorm Warning Considerable damage threat	MEG	Chickasaw, Itawamba, Monroe	46 min
Dec 29, 5:42 PM CST	Areal Flood Advisory	MEG	Calhoun, Chickasaw, Itawamba, Lee, Monroe, Pontotoc	3 hr
Dec 29, 5:53 PM CST	Severe Thunderstorm Warning	MEG	Monroe	37 min
Dec 29, 1:42 PM CST	Areal Flood Advisory	MEG	Haywood, Lauderdale, Shelby, Tipton	4 hr
Dec 29, 2:20 PM CST	Areal Flood Advisory	MEG	Shelby	3 hr
Dec 29, 2:53 PM CST	Flash Flood Warning	MEG	Haywood	4 hr
Dec 29, 1:22 PM CST	Areal Flood Advisory	MEG	Crittenden, Cross, St. Francis	4 hr

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.