Alert archive / Tennessee / Special Weather Statements in 2018

Special Weather Statement, NWS Memphis, TN

August 30, 2018Shelby County, Tennessee

NWS Memphis, TN issued this special weather statement at Aug 30, 2018, 3:16 PM CDT for Shelby County, Tennessee. It was in force for 29 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: Aug 30, 2018, 3:16 PM CDT (20:16 UTC)
Expired: Aug 30, 2018, 3:45 PM CDT
In force: 29 min
Issued by: NWS Memphis, TN

County Shelby County, TN

The radar

The Memphis radar (KNQA), 27 km from the middle of the area, began a volume at 20:18 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 (KBYH), launched 12:00Z, 8.3 hours before the alert went out and 36 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: 1516 J/kg
Mixed-layer CIN: -29 J/kg
Mixed-layer LCL: 514 m above ground
0-6 km bulk shear: 5 kt
0-1 km storm-relative helicity: -23 m²/s²
0-3 km storm-relative helicity: -1 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 Aug 30, 12:20 PM CDT, 2 hours 56 minutes earlier.

Area forecast discussion, Aug 30, 12:20 PM CDT, 2 hours 56 minutes before

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Hazardous weather outlook, Aug 30, 3:48 AM CDT, 11 hours 28 minutes before

Hazardous Weather Outlook
National Weather Service Memphis TN
348 AM CDT Thu Aug 30 2018

ARZ008-009-017-018-026>028-035-036-048-049-058-MOZ113-115-
MSZ001>017-020>024-TNZ001>004-019>022-048>055-088>092-311100-
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-Lawrence-
Lee AR-Lee MS-Madison-Marshall-McNairy-Mississippi-Monroe-Obion-
Panola-Pemiscot-Phillips-Poinsett-Pontotoc-Prentiss-Quitman-
Randolph-Shelby-St. Francis-Tallahatchie-Tate-Tippah-Tipton-
Tishomingo-Tunica-Union-Weakley-Yalobusha-
348 AM CDT Thu Aug 30 2018

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

.DAY ONE...Today and Tonight

A few strong thunderstorms are possible across the Mid-South this
afternoon into early evening with gusty winds and localized heavy
rainfall as the main threats.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated at this time.

In the hours before

Special weather statement, Aug 30, 2:09 PM CDT, 1 hour 7 minutes before

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Special weather statement, Aug 30, 2:43 PM CDT, 33 minutes before

Special Weather Statement
National Weather Service Memphis TN
243 PM CDT THU AUG 30 2018

TNZ089-302015-
Fayette TN-
243 PM CDT THU AUG 30 2018

...A SIGNIFICANT WEATHER ADVISORY HAS BEEN ISSUED UNTIL 315 PM CDT
FOR...

Central Fayette County in southwestern Tennessee...

At 243 PM CDT...a strong thunderstorm producing pea size hail or
larger and winds at least 40 mph was located 8 miles west of
Somerville, or 16 miles northeast of Collierville, moving southwest
at 25 mph.

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

People in central Fayette County should monitor this storm closely.

LAT...LON 3509 8934 3509 8964 3525 8964 3538 8963
      3540 8956 3540 8924
TIME...MOT...LOC 1943Z 048DEG 23KT 3524 8950

Special weather statement, Aug 30, 2:48 PM CDT, 28 minutes before

Special Weather Statement
National Weather Service Memphis TN
248 PM CDT THU AUG 30 2018

MSZ001-302030-
DeSoto MS-
248 PM CDT THU AUG 30 2018

...A SIGNIFICANT WEATHER ADVISORY HAS BEEN ISSUED UNTIL 330 PM CDT
FOR...

Northern DeSoto County in northwestern Mississippi...

At 248 PM CDT...a strong thunderstorm producing pea size hail or
larger and winds at least 40 mph was located near Hernando, moving
southwest at 25 mph.

People in northern DeSoto County should monitor this storm closely.

LAT...LON 3500 9019 3499 8980 3481 8985 3478 9020
TIME...MOT...LOC 1948Z 048DEG 22KT 3489 9002

Special weather statement, Aug 30, 3:16 PM CDT, 0 minutes before

Special Weather Statement
National Weather Service Memphis TN
316 PM CDT THU AUG 30 2018

TNZ088-302045-
Shelby TN-
316 PM CDT THU AUG 30 2018

...A SIGNIFICANT WEATHER ADVISORY HAS BEEN ISSUED UNTIL 345 PM CDT
FOR...

Southeastern Shelby County in southwestern Tennessee...

At 316 PM CDT...a strong thunderstorm producing pea size hail or
larger and winds at least 40 mph was located over Germantown, moving
southwest at 25 mph.

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

People in southeastern Shelby County should monitor this storm
closely.

LAT...LON 3522 8986 3522 8964 3504 8964 3499 8965
      3500 8996
TIME...MOT...LOC 2016Z 051DEG 24KT 3507 8977

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 30, 2:43 PM CDT	Special Weather Statement	MEG	Fayette	32 min
Aug 30, 3:41 PM CDT	Special Weather Statement	MEG	Shelby	34 min
Aug 30, 3:52 PM CDT	Areal Flood Advisory	MEG	Shelby	53 min
Aug 30, 4:10 PM CDT	Severe Thunderstorm Warning	MEG	Shelby	25 min
Aug 30, 4:17 PM CDT	Special Weather Statement	MEG	Tipton	43 min
Aug 30, 4:46 PM CDT	Special Weather Statement	MEG	Shelby	44 min
Aug 30, 4:49 PM CDT	Areal Flood Advisory	MEG	Fayette, Shelby, Tipton	64 min
Aug 30, 4:52 PM CDT	Areal Flood Advisory	MEG	Shelby	53 min
Aug 30, 5:32 PM CDT	Areal Flood Advisory	MEG	Shelby, Tipton	118 min
Aug 30, 6:27 PM CDT	Special Weather Statement	MEG	Hardin	48 min
Aug 30, 6:49 PM CDT	Areal Flood Advisory	MEG	Hardin	116 min
Aug 29, 7:06 PM CDT	Special Weather Statement	MEG	Tate	39 min
Aug 29, 7:07 PM CDT	Special Weather Statement	MEG	Marshall	38 min
Aug 29, 8:01 PM CDT	Areal Flood Advisory	MEG	Benton, Marshall	119 min
Aug 30, 2:09 PM CDT	Special Weather Statement	MEG	DeSoto	36 min
Aug 30, 2:48 PM CDT	Special Weather Statement	MEG	DeSoto	42 min
Aug 30, 3:17 PM CDT	Special Weather Statement	MEG	Itawamba, Tishomingo	43 min
Aug 30, 3:34 PM CDT	Special Weather Statement	MEG	Tate	41 min
Aug 30, 4:57 PM CDT	Special Weather Statement	MEG	Pontotoc	48 min
Aug 30, 5:07 PM CDT	Special Weather Statement	MEG	Tippah	53 min
Aug 30, 5:42 PM CDT	Areal Flood Advisory	MEG	Tippah	61 min
Aug 30, 5:43 PM CDT	Areal Flood Advisory	MEG	Lee, Pontotoc	59 min
Aug 30, 4:13 PM CDT	Areal Flood Advisory	MEG	Craighead	99 min
Aug 30, 4:38 PM CDT	Special Weather Statement	MEG	Crittenden	52 min
Aug 30, 5:22 PM CDT	Special Weather Statement	MEG	Lawrence	38 min
Aug 30, 5:41 PM CDT	Areal Flood Advisory	MEG	Lawrence	2 hr
Aug 30, 6:02 PM CDT	Special Weather Statement	MEG	Lawrence	43 min
Aug 30, 6:06 PM CDT	Flash Flood Warning	MEG	Lawrence	3 hr
Aug 30, 6:41 PM CDT	Special Weather Statement	MEG	Randolph	49 min

Nearby

Special Weather Statements in Tennessee, 2018 Every special weather statement in 2018

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.