Alert archive / Tennessee / Special Weather Statements in 2012

Special Weather Statement, NWS Memphis, TN

July 1, 2012Hardeman County, Tennessee

NWS Memphis, TN issued this special weather statement at Jul 1, 2012, 6:46 PM CDT for Hardeman 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: Jul 1, 2012, 6:46 PM CDT (23:46 UTC)
Expired: Jul 1, 2012, 7:15 PM CDT
In force: 29 min
Issued by: NWS Memphis, TN

County Hardeman County, TN

The radar

The Memphis radar (KNQA), 98 km from the middle of the area, began a volume at 23:48 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, 11.8 hours before the alert went out and 99 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: 981 J/kg
Mixed-layer CIN: -161 J/kg
Mixed-layer LCL: 1690 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 22 m²/s²
0-3 km storm-relative helicity: 30 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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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 1, 6:33 PM CDT, 13 minutes earlier.

Area forecast discussion, Jul 1, 6:33 PM CDT, 13 minutes before

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Hazardous weather outlook, Jul 1, 5:23 PM CDT, 1 hour 23 minutes before

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In the hours before

Special weather statement, Jul 1, 5:13 PM CDT, 1 hour 33 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MEMPHIS TN
513 PM CDT SUN JUL 1 2012

MSZ013-015-021-022-012245-
YALOBUSHA MS-PONTOTOC MS-LAFAYETTE MS-CALHOUN MS-
513 PM CDT SUN JUL 1 2012

...THE NATIONAL WEATHER SERVICE IN MEMPHIS HAS ISSUED A SIGNIFICANT
WEATHER ADVISORY UNTIL 545 PM CDT FOR...

  NORTHWESTERN CALHOUN COUNTY IN NORTHEAST MISSISSIPPI...
  SOUTHWESTERN PONTOTOC COUNTY IN NORTHEAST MISSISSIPPI...
  SOUTHEASTERN LAFAYETTE COUNTY IN NORTHWEST MISSISSIPPI...
  NORTHEASTERN YALOBUSHA COUNTY IN NORTHWEST MISSISSIPPI...

A STRONG THUNDERSTORM PRODUCING WINDS AT LEAST 40 MPH WAS LOCATED 4
MILES SOUTHEAST OF PARIS AT 513 PM CDT...MOVING NORTH AT 10 MPH.

VERY HEAVY RAIN ALONG WITH CONTINUOUS CLOUD TO GROUND LIGHTNING ARE
ALSO POSSIBLE WITH THIS THUNDERSTORM.

PEOPLE IN CALHOUN...LAFAYETTE...PONTOTOC AND YALOBUSHA COUNTIES
SHOULD MONITOR THIS STORM CLOSELY.

&&

LAT...LON 3434 8948 3428 8917 3406 8925 3411 8955
TIME...MOT...LOC 2213Z 198DEG 7KT 3417 8940

Local storm report, Jul 1, 5:36 PM CDT, 1 hour 10 minutes before

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Special weather statement, Jul 1, 6:10 PM CDT, 36 minutes before

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Local storm report, Jul 1, 6:23 PM CDT, 23 minutes before

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Local storm report, Jul 1, 6:39 PM CDT, 7 minutes before

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Special weather statement, Jul 1, 6:46 PM CDT, 0 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 1, 4:15 PM CDT	Special Weather Statement	MEG	Chickasaw	30 min
Jul 1, 4:23 PM CDT	Severe Thunderstorm Warning	MEG	Calhoun, Chickasaw	29 min
Jul 1, 4:57 PM CDT	Special Weather Statement	MEG	Pontotoc	33 min
Jul 1, 5:09 PM CDT	Severe Thunderstorm Warning	MEG	Calhoun	36 min
Jul 1, 5:13 PM CDT	Special Weather Statement	MEG	Lafayette	32 min
Jul 1, 6:10 PM CDT	Special Weather Statement	MEG	Lafayette	20 min

Nearby

Special Weather Statements in Tennessee, 2012 Every special weather statement in 2012

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.