Alert archive / Mississippi / Special Weather Statements in 2021

Special Weather Statement, NWS Memphis, TN

July 16, 2021Chickasaw County, Mississippi

NWS Memphis, TN issued this special weather statement at Jul 16, 2021, 2:27 PM CDT for Chickasaw County, Mississippi. It was in force for 33 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: Jul 16, 2021, 2:27 PM CDT (19:27 UTC)
Expired: Jul 16, 2021, 3:00 PM CDT
In force: 33 min
Issued by: NWS Memphis, TN

County Chickasaw County, MS

The radar

The Columbus AFB radar (KGWX), 58 km from the middle of the area, began a volume at 19:30 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, 7.5 hours before the alert went out and 130 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: 681 J/kg
Mixed-layer CIN: -53 J/kg
Mixed-layer LCL: 567 m above ground
0-6 km bulk shear: 9 kt
0-1 km storm-relative helicity: -6 m²/s²
0-3 km storm-relative helicity: 16 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 Jul 16, 12:35 PM CDT, 1 hour 52 minutes earlier.

Area forecast discussion, Jul 16, 12:35 PM CDT, 1 hour 52 minutes before

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Hazardous weather outlook, Jul 16, 3:15 AM CDT, 11 hours 12 minutes before

Hazardous Weather Outlook...Corrected
National Weather Service Memphis TN
315 AM CDT Fri Jul 16 2021

ARZ009-018-026>028-035-036-048-049-058-MOZ113-115-MSZ001>017-
020>024-TNZ001>004-019>022-048>055-088>092-171015-
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-
306 AM CDT Fri Jul 16 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 over northeast
Arkansas and the Missouri bootheel this afternoon. Damaging winds and
locally heavy rainfall will be the primary threats.

There is a Marginal Risk for flash flooding along and north of
Interstate 40 this afternoon.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday

There is a Marginal Risk for flash flooding over the all the Midsouth
on Saturday. The threat for locally heavy rainfall will shift to north
Mississippi Sunday morning.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated at this time.

PWB

In the hours before

Special weather statement, Jul 16, 1:27 PM CDT, 1 hour before

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Special weather statement, Jul 16, 1:33 PM CDT, 54 minutes before

Special Weather Statement
National Weather Service Memphis TN
133 PM CDT Fri Jul 16 2021

MSZ022-023-161900-
Calhoun MS-Chickasaw MS-
133 PM CDT Fri Jul 16 2021

...A SIGNIFICANT WEATHER ADVISORY HAS BEEN ISSUED UNTIL 200 PM CDT
FOR...

Southern Calhoun County in northeastern Mississippi...
Southwestern Chickasaw County in northeastern Mississippi...

At 132 PM CDT...a strong thunderstorm producing winds in excess of 40
mph was located over Calhoun City, or 17 miles west of Houston,
moving northeast at 25 mph.

People in southern Calhoun and southwestern Chickasaw Counties should
monitor this storm closely.

LAT...LON 3387 8943 3407 8917 3386 8903 3374 8914
      3374 8919 3372 8919 3372 8940
TIME...MOT...LOC 1832Z 234DEG 20KT 3385 8930

MJ

Special weather statement, Jul 16, 1:57 PM CDT, 30 minutes before

Special Weather Statement
National Weather Service Memphis TN
157 PM CDT Fri Jul 16 2021

MSZ015-022-023-161930-
Pontotoc MS-Calhoun MS-Chickasaw MS-
157 PM CDT Fri Jul 16 2021

...A SIGNIFICANT WEATHER ADVISORY HAS BEEN ISSUED UNTIL 230 PM CDT
FOR...

Western Pontotoc County in northeastern Mississippi...
Eastern Calhoun County in northeastern Mississippi...
Northwestern Chickasaw County in northeastern Mississippi...

At 156 PM CDT...a strong thunderstorm producing winds at least 40 mph
was located near Houlka, or 10 miles northwest of Houston, moving
northeast at 20 mph.

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

People in western Pontotoc...eastern Calhoun and northwestern
Chickasaw Counties should monitor this storm closely.

LAT...LON 3375 8927 3409 8927 3432 8898 3387 8897
TIME...MOT...LOC 1856Z 231DEG 17KT 3400 8913

MJ

Special weather statement, Jul 16, 1:58 PM CDT, 29 minutes before

Special Weather Statement
National Weather Service Memphis TN
158 PM CDT Fri Jul 16 2021

ARZ028-036-TNZ049-088-161930-
Mississippi AR-Crittenden AR-Tipton TN-Shelby TN-
158 PM CDT Fri Jul 16 2021

...A SIGNIFICANT WEATHER ADVISORY HAS BEEN ISSUED UNTIL 230 PM CDT
FOR...

South central Mississippi County in eastern Arkansas...
Northeastern Crittenden County in eastern Arkansas...
Southwestern Tipton County in western Tennessee...
Northwestern Shelby County in western Tennessee...

At 158 PM CDT...a strong thunderstorm producing winds in excess of 40
mph was located near Meeman Shelby Forest State Park, moving east at
15 mph.

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

People in south central Mississippi...northeastern Crittenden...
southwestern Tipton and northwestern Shelby Counties should monitor
this storm closely.

LAT...LON 3553 9004 3542 8988 3526 8993 3519 9028
      3540 9029
TIME...MOT...LOC 1858Z 247DEG 15KT 3535 9015

MJ

Special weather statement, Jul 16, 2:27 PM CDT, 0 minutes before

Special Weather Statement
National Weather Service Memphis TN
227 PM CDT Fri Jul 16 2021

MSZ015-016-022-023-162000-
Pontotoc MS-Lee MS-Calhoun MS-Chickasaw MS-
227 PM CDT Fri Jul 16 2021

...A SIGNIFICANT WEATHER ADVISORY HAS BEEN ISSUED UNTIL 300 PM CDT
FOR...

Southern Pontotoc County in northeastern Mississippi...
Southwestern Lee County in northeastern Mississippi...
East central Calhoun County in northeastern Mississippi...
Chickasaw County in northeastern Mississippi...

At 227 PM CDT...a strong thunderstorm producing winds at least 40 mph
was located near Houlka, or 8 miles northwest of Houston, moving east
at 20 mph.

Very heavy rain is also possible with this thunderstorm.

People in southern Pontotoc...southwestern Lee...east central Calhoun
and Chickasaw Counties should monitor this storm closely.

LAT...LON 3381 8914 3414 8919 3431 8876 3405 8872
      3388 8872
TIME...MOT...LOC 1927Z 263DEG 18KT 3400 8906

SWB

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 16, 1:33 PM CDT	Special Weather Statement	MEG	Calhoun	27 min
Jul 16, 1:57 PM CDT	Special Weather Statement	MEG	Pontotoc	33 min
Jul 16, 2:56 PM CDT	Special Weather Statement	MEG	Itawamba, Lee, Monroe	34 min
Jul 16, 3:07 PM CDT	Special Weather Statement	MEG	Monroe	53 min
Jul 16, 5:02 PM CDT	Special Weather Statement	MEG	DeSoto	28 min
Jul 16, 1:58 PM CDT	Special Weather Statement	MEG	Shelby	32 min
Jul 16, 3:21 PM CDT	Special Weather Statement	MEG	Haywood	24 min
Jul 16, 3:48 PM CDT	Special Weather Statement	MEG	Haywood, Madison	27 min
Jul 16, 4:22 PM CDT	Special Weather Statement	MEG	Fayette	38 min
Jul 16, 1:27 PM CDT	Special Weather Statement	MEG	Crittenden	33 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.