Alert archive / Tennessee / Special Weather Statements in 2017

Special Weather Statement, NWS Memphis, TN

July 5, 2017Carroll County, Tennessee

NWS Memphis, TN issued this special weather statement at Jul 5, 2017, 5:39 AM CDT for Carroll County, Tennessee. It was in force for 36 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 5, 2017, 5:39 AM CDT (10:39 UTC)
Expired
Jul 5, 2017, 6:15 AM CDT
In force
36 min
Issued by
NWS Memphis, TN

County Carroll County, TN

The radar

The Memphis radar (KNQA), 116 km from the middle of the area, began a volume at 10:39 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 (KBYH), launched 00:00Z, 10.7 hours before the alert went out and 154 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.

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <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>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

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 5, 4:15 AM CDT, 1 hour 24 minutes earlier.

Area forecast discussion, Jul 5, 4:15 AM CDT, 1 hour 24 minutes before
Area Forecast Discussion
National Weather Service Memphis TN
415 AM CDT Wed Jul 5 2017

.DISCUSSION...Water Vapor/Infrared Satellite trends along with 00Z
upper air analysis places an upper level low over Southwest
Missouri earLy this morning. Regional WSR-88D radar trends show
showers and a few thunderstorms over areas along and west of the
Mississippi River and another area over Northeast Texas and
Southwest Arkansas. As of 3 AM CDT, temperatures across the Mid-
South are in the 70s across most locations.

Short term models are in relatively decent agreement this morning
with the upper level low over Southwest Missouri slowly moving
east today and gradually becoming absorbed into a longwave upper
level trough axis by Thursday and Thursday night. These synoptic
features combined with a warm, moist and unstable tropical
airmass will result in continued chances for showers and
thunderstorms across much of the Mid-South Today through Thursday
night. Potential will exist for a few strong thunderstorms and
perhaps an isolated severe thunderstorm. Damaging winds will be
the primary severe weather threat if any thunderstorms can reach
severe limits. High low level moisture and precipitable water
values above 2 inches will be conducive for heavy rainfall with
the convective activity. Shower and thunderstorm chances will
gradually diminish into Friday as shortwave ridging temporarily
builds in across the Mid-South.

Long term models suggest an unsettled pattern will persist across
the Mid-South for the upcoming weekend into early next week as
persistent northwest upper level flow remains entrenched across
the Middle and Lower Mississippi Valleys with an upper level ridge
centered over the Rockies. This will result in chances for showers
and thunderstorms each day with a potential for better coverage
occurring during peak daytime heating. Temperatures will average
slightly below normal to near normal for July.

CJC

&&

.AVIATION...
06z TAFs

An upper level disturbance over SW MO will very slowly move east
over the next 24 hours. A few lingering SHRAs expected overnight.
Expect stratus to develop around sunrise lifting by 15z or 16z
followed by another round of SHRAs/TSRAs into the early afternoon.
SHRA and TSRA threat will continue through the end of the period
with the upper trough axis still to the west, though timing is
difficult this far out. Light south winds overnight become SW on
Wednesday with some gusts above 15 kts at KMEM and KJBR in the
afternoon.

SJM

&&

.MEG WATCHES/WARNINGS/ADVISORIES...
AR...None.
MO...None.
MS...None.
TN...None.
&&
Hazardous weather outlook, Jul 5, 4:19 AM CDT, 1 hour 20 minutes before
Hazardous Weather Outlook
National Weather Service Memphis TN
419 AM CDT Wed Jul 5 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>092-061200-
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-
419 AM CDT Wed Jul 5 2017

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 to perhaps an isolated severe
thunderstorm is possible across the Mid-South today into this
evening. Damaging winds is the primary threat if any
thunderstorms can reach severe limits. Heavy rainfall is also
possible.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday

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, Jul 5, 4:53 AM CDT, 46 minutes before
Special Weather Statement
National Weather Service Memphis TN
453 AM CDT WED JUL 5 2017

TNZ050-052-090-051030-
Hardeman TN-Madison TN-Haywood TN-
453 AM CDT WED JUL 5 2017

...A SIGNIFICANT WEATHER ADVISORY HAS BEEN ISSUED UNTIL 530 AM CDT
FOR...

Northwestern Hardeman County in western Tennessee...
Western Madison County in western Tennessee...
Southeastern Haywood County in western Tennessee...

At 452 AM CDT...strong thunderstorms were producing winds to 45 mph
was located along a line extending from Holly Grove to near
Dancyville. Movement was east at 30 mph.

Very heavy rain will occur with this line of thunderstorms.

People in northwestern Hardeman...western Madison and southeastern
Haywood Counties should monitor this storm closely.

LAT...LON 3539 8887 3540 8933 3570 8921 3571 8912
      3567 8902 3572 8896 3574 8873
TIME...MOT...LOC 0952Z 267DEG 27KT 3564 8916 3541 8924
Special weather statement, Jul 5, 5:39 AM CDT, 0 minutes before
Special Weather Statement
National Weather Service Memphis TN
539 AM CDT WED JUL 5 2017

TNZ020-021-052-054-051115-
Carroll TN-Henderson TN-Madison TN-Gibson TN-
539 AM CDT WED JUL 5 2017

...A SIGNIFICANT WEATHER ADVISORY HAS BEEN ISSUED UNTIL 615 AM CDT
FOR...

Southwestern Carroll County in western Tennessee...
Northwestern Henderson County in western Tennessee...
Northeastern Madison County in western Tennessee...
Southeastern Gibson County in western Tennessee...

At 538 AM CDT...a strong thunderstorm producing winds TO 50 mph was
located 7 miles east of Fairview, or 10 miles northeast of Jackson,
moving east at 30 mph.

Very heavy rain is also possible with this thunderstorm.

People in southwestern Carroll...northwestern Henderson...
northeastern Madison and southeastern Gibson Counties should monitor
this storm closely.

LAT...LON 3567 8884 3583 8884 3594 8849 3571 8846
TIME...MOT...LOC 1038Z 249DEG 26KT 3576 8872

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 4, 7:08 PM CDTSpecial Weather StatementMEGFayette, Shelby52 min
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, 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, 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.