Alert archive / Tennessee / Special Weather Statements in 2017

Special Weather Statement, NWS Memphis, TN

July 4, 2017Fayette County, Shelby County, Tennessee; DeSoto County, Mississippi

NWS Memphis, TN issued this special weather statement at Jul 4, 2017, 7:08 PM CDT for Fayette County, Shelby County, Tennessee; DeSoto County, Mississippi. It was in force for 52 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 4, 2017, 7:08 PM CDT (00:08 UTC)
Expired
Jul 4, 2017, 8:00 PM CDT
In force
52 min
Issued by
NWS Memphis, TN

Counties DeSoto County, MS, Fayette County, TN, Shelby County, TN

The radar

The Memphis radar (KNQA), 43 km from the middle of the area, began a volume at 00:10 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 00:00Z, 0.1 hours before the alert went out and 23 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-pSkew-T log-p diagram, Little Rock, AR at 00:00Z on 2017-07-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 595 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Little Rock, AR at 00:00Z on 2017-07-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 45 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
595 J/kg
Mixed-layer CIN
-20 J/kg
Mixed-layer LCL
1339 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
45 m²/s²
0-3 km storm-relative helicity
53 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.6

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 4, 7:03 PM CDT, 5 minutes earlier.

Area forecast discussion, Jul 4, 7:03 PM CDT, 5 minutes before
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Hazardous weather outlook, Jul 4, 2:11 PM CDT, 4 hours 57 minutes before
Hazardous Weather Outlook
National Weather Service Memphis TN
211 PM CDT Tue Jul 4 2017

ARZ008-009-017-018-026>028-035-036-048-049-058-MOZ113-115-
MSZ001>017-020>024-TNZ001>004-019>022-048>055-088>092-052115-
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-
211 PM CDT Tue Jul 4 2017

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 marginal risk for severe thunderstorms along and west
of the Mississippi River this afternoon into tonight. Damaging
winds will be the primary threat for any thunderstorms that reach
severe limits. Heavy rainfall will also be possible.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday

There is a marginal risk for severe thunderstorms across the
entire Mid-South on Wednesday. Damaging winds will be the primary
threat for any thunderstorms that reach severe limits. Heavy
rainfall will also be possible.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed occasionally today through
Wednesday.

In the hours before

Special weather statement, Jul 4, 5:17 PM CDT, 1 hour 51 minutes before
Special Weather Statement
National Weather Service Memphis TN
517 PM CDT TUE JUL 4 2017

ARZ028-036-TNZ049-088-042300-
Mississippi AR-Crittenden AR-Tipton TN-Shelby TN-
517 PM CDT TUE JUL 4 2017

...A SIGNIFICANT WEATHER ADVISORY HAS BEEN ISSUED UNTIL 600 PM CDT
FOR...

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

At 516 PM CDT...a strong thunderstorm producing pea size hail or
larger and winds at least 40 mph was located over Meeman Shelby
Forest State Park, moving northeast at 15 mph.

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

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

LAT...LON 3518 9000 3540 9029 3565 9011 3547 8981
TIME...MOT...LOC 2216Z 215DEG 15KT 3531 9007
Local storm report, Jul 4, 6:00 PM CDT, 1 hour 8 minutes before
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Special weather statement, Jul 4, 6:12 PM CDT, 56 minutes before
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Special weather statement, Jul 4, 6:31 PM CDT, 37 minutes before
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Special weather statement, Jul 4, 6:41 PM CDT, 27 minutes before
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Special weather statement, Jul 4, 7:08 PM CDT, 0 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jul 4, 7:37 PM CDTSpecial Weather StatementMEGChester38 min
Jul 5, 4:53 AM CDTSpecial Weather StatementMEGMadison37 min
Jul 5, 5:09 AM CDTSevere Thunderstorm WarningMEGCrockett, Haywood, Madison28 min
Jul 5, 5:39 AM CDTSpecial Weather StatementMEGCarroll36 min
Jul 5, 10:21 AM CDTSpecial Weather StatementMEGTipton39 min
Jul 5, 10:38 AM CDTSpecial Weather StatementMEGLake52 min
Jul 5, 10:48 AM CDTSpecial Weather StatementMEGCrockett, Haywood42 min
Jul 5, 11:08 AM CDTSevere Thunderstorm WarningMEGCrockett, Dyer, Haywood, Lauderdale52 min
Jul 5, 11:13 AM CDTSpecial Weather StatementMEGObion47 min
Jul 5, 11:34 AM CDTSpecial Weather StatementMEGGibson41 min
Jul 5, 11:54 AM CDTSpecial Weather StatementMEGWeakley51 min
Jul 5, 11:57 AM CDTSpecial Weather StatementMEGBenton, Carroll, Henry63 min
Jul 5, 3:43 PM CDTSevere Thunderstorm WarningMEGCarroll, Gibson32 min
Jul 4, 7:24 PM CDTSpecial Weather StatementMEGDeSoto, Tate, Tunica51 min
Jul 4, 8:10 PM CDTSpecial Weather StatementMEGTate50 min
Jul 5, 8:03 AM CDTSpecial Weather StatementMEGCross, Poinsett42 min
Jul 5, 8:42 AM CDTSpecial Weather StatementMEGCross, Poinsett48 min
Jul 5, 9:10 AM CDTSpecial Weather StatementMEGCraighead, Poinsett35 min

Nearby

Special Weather Statements in Tennessee, 2017Special Weather Statements in Mississippi, 2017Every special weather statement in 2017

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.