Alert archive / Mississippi / Special Weather Statements in 2012

Special Weather Statement, NWS Memphis, TN

July 8, 2012Tippah County, Mississippi

NWS Memphis, TN issued this special weather statement at Jul 8, 2012, 1:21 PM CDT for Tippah County, Mississippi. It was in force for 39 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 8, 2012, 1:21 PM CDT (18:21 UTC)
Expired
Jul 8, 2012, 2:00 PM CDT
In force
39 min
Issued by
NWS Memphis, TN

County Tippah County, MS

The radar

The Columbus AFB radar (KGWX), 97 km from the middle of the area, began a volume at 18:23 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, 6.4 hours before the alert went out and 108 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 12:00Z on 2012-07-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1410 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Little Rock, AR at 12:00Z on 2012-07-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -35 square meters per square second.1939Sfc1 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
1410 J/kg
Mixed-layer CIN
-123 J/kg
Mixed-layer LCL
1335 m above ground
0-6 km bulk shear
8 kt
0-1 km storm-relative helicity
-35 m²/s²
0-3 km storm-relative helicity
5 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

178 
WWUS84 KMEG 081821
SPSMEG

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MEMPHIS TN
121 PM CDT SUN JUL 8 2012

MSZ004-009-081900-
TIPPAH MS-PRENTISS MS-
121 PM CDT SUN JUL 8 2012

...THE NATIONAL WEATHER SERVICE IN MEMPHIS HAS ISSUED A SIGNIFICANT
WEATHER ADVISORY UNTIL 200 PM CDT FOR...

  NORTHWESTERN PRENTISS COUNTY IN NORTHEAST MISSISSIPPI...
  SOUTHEASTERN TIPPAH COUNTY IN NORTHEAST MISSISSIPPI...

A STRONG THUNDERSTORM PRODUCING WINDS AT LEAST 40 MPH WAS LOCATED 5
MILES EAST OF DUMAS AT 121 PM CDT...MOVING NORTH AT 5 MPH.

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

PEOPLE IN PRENTISS AND TIPPAH COUNTIES SHOULD MONITOR THIS STORM
CLOSELY.

&&

LAT...LON 3475 8888 3476 8871 3463 8868 3460 8873
      3460 8883
TIME...MOT...LOC 1821Z 165DEG 5KT 3464 8875

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 7, 7:05 PM CDTSevere Thunderstorm WarningMEGTate, Tunica25 min
Jul 7, 7:24 PM CDTSevere Thunderstorm WarningMEGDeSoto41 min
Jul 7, 9:36 PM CDTSpecial Weather StatementMEGYalobusha24 min
Jul 7, 9:42 PM CDTSevere Thunderstorm WarningMEGLafayette, Panola, Yalobusha48 min
Jul 8, 4:41 AM CDTSevere Thunderstorm WarningMEGAlcorn, Prentiss, Tishomingo34 min
Jul 8, 5:10 AM CDTSevere Thunderstorm WarningMEGAlcorn, Prentiss, Tippah35 min
Jul 8, 1:22 PM CDTSpecial Weather StatementMEGLee53 min
Jul 8, 1:52 PM CDTSpecial Weather StatementMEGPrentiss23 min
Jul 8, 2:33 PM CDTSpecial Weather StatementMEGAlcorn27 min
Jul 7, 8:11 PM CDTSevere Thunderstorm WarningMEGLauderdale, Tipton19 min
Jul 7, 8:24 PM CDTSpecial Weather StatementMEGHaywood36 min
Jul 7, 8:42 PM CDTSevere Thunderstorm WarningMEGHaywood, Lauderdale, Tipton25 min
Jul 7, 10:15 PM CDTSevere Thunderstorm WarningMEGHenry, Weakley45 min
Jul 8, 4:22 AM CDTSpecial Weather StatementMEGWeakley23 min
Jul 8, 2:11 PM CDTSpecial Weather StatementMEGRandolph34 min
Jul 8, 5:01 PM CDTSevere Thunderstorm WarningMEGRandolph29 min

Nearby

Special Weather Statements in Mississippi, 2012Every 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.