Louisiana Weather

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cCatclaw
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Joined: Wed Jan 16, 2013 4:37 am
Location: Louisiana

Louisiana Weather

Post by cCatclaw » Mon Feb 18, 2013 2:54 am

I am visiting friends in Shreveport-Bossier City for 2-4 weeks, And i am monitoring the weather during that for any bad weather in the next days.

So far...A little severe could start today or tomorrow...

SPC AC 180514

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1114 PM CST SUN FEB 17 2013

VALID 181200Z - 191200Z

...NO SVR TSTM AREAS FORECAST...

...SYNOPSIS...
AN UPPER TROUGH PROGRESSING EWD ACROSS THE INTERMOUNTAIN W/NRN HIGH
PLAINS LATE SUNDAY NIGHT WILL DIG INTO THE CNTRL/SRN PLAINS LATER
THIS AFTERNOON...AND THEN LIFT NEWD INTO THE GREAT LAKES REGION BY
THE END OF THE FORECAST PERIOD. ALONG THE BASE OF THE TROUGH...A
MIDLEVEL JET STREAK WILL STRENGTHEN ACROSS THE SRN PLAINS AND
OZARKS...AND THEN EJECT ACROSS THE OH VALLEY WITH THE UPPER TROUGH.
MEANWHILE...A SURFACE CYCLONE WILL CONSOLIDATE OVER THE UPPER MS
VALLEY DURING THE MORNING/AFTERNOON...AND THEN DEEPEN FURTHER OVER
THE GREAT LAKES DURING MONDAY NIGHT. AN ASSOCIATED COLD FRONT
TRAILING SWWD FROM THE LOW WILL EXTEND INTO NERN TX THIS
AFTERNOON...AND THEN SWEEP ESEWD ACROSS THE GULF COAST REGION AND
PART OF THE SERN CONUS.

...FAR SERN OK...ERN TX...CNTRL/SRN AR...NRN/CNTRL LA...
SURFACE AND SATELLITE OBSERVATIONS LATE SUNDAY NIGHT SHOW 50S
DEWPOINTS AND PW VALUES FROM 0.75-1.0 INCH ARE RETURNING NWD ACROSS
SRN TX. MOISTURE ADVECTION WILL CONTINUE THROUGH MONDAY MORNING INTO
THE AFTERNOON...AIDED BY A 50+ KT LOW-LEVEL SWLY JET...SUCH THAT BY
19/00Z...LOW TO MID 50S DEWPOINTS WILL BE LOCATED AHEAD OF THE COLD
FRONT AS FAR N AS CNTRL AR...WITH UPPER 50S DEWPOINTS POSSIBLE IN
ERN TX. A MODEST EML WITH 700-500 MB LAPSE RATES FROM 6.5 TO 7.5
C/KM WILL BE PRESENT ATOP THE MOISTENING BOUNDARY LAYER...WHICH WILL
INHIBIT THUNDERSTORM DEVELOPMENT THROUGH MID AFTERNOON.
THEREAFTER...FORCING FOR ASCENT ALONG THE COLD FRONT WILL AID IN
ISOLATED TO SCATTERED THUNDERSTORM DEVELOPMENT LATE THIS AFTERNOON
AND EVENING FROM WRN/CNTRL AR INTO FAR SERN OK AND NERN TX. STORMS
WILL THEN SPREAD EWD ACROSS THE LOWER MS VALLEY DURING THE NIGHT.

STRONG SURFACE HEATING WILL LIKELY BE INHIBITED DURING MOST OF THE
AFTERNOON DUE TO LOW-LEVEL CLOUD COVER. THIS...IN ADDITION TO
SOMEWHAT MARGINAL BOUNDARY LAYER MOISTURE...WILL LIMIT MUCAPE VALUES
TO AOB 500 J/KG. GIVEN THE WEAK CAPE ENVIRONMENT AND LINEAR FORCING
ALONG THE FRONT...THE POTENTIAL FOR DISCRETE STORM DEVELOPMENT
APPEARS TO BE LOW. HOWEVER...VERTICAL SHEAR PROFILES WILL BE MORE
THAN SUFFICIENT FOR SUPERCELLS. INITIAL STORMS MAY BE QUASI-DISCRETE
OR OCCUR IN CLUSTERS...AND POSE A THREAT FOR MARGINALLY SEVERE HAIL.
THIS WILL LIKELY BE FOLLOWED BY UPSCALE GROWTH INTO A LINE...WITH A
FEW SEGMENTS DISPLAYING EMBEDDED MESOCYCLONES AND BOWING STRUCTURES
WHICH WILL FAVOR LOW PROBABILITIES FOR A TORNADO AND DAMAGING WINDS.

OVER ERN TX AND WRN LA...MOISTURE TRANSPORT WITHIN THE WARM CONVEYOR
BELT WILL TAKE PLACE THROUGHOUT THE AFTERNOON. A WARM LAYER AT 700
MB WILL LIKELY INHIBIT DEEP MOIST CONVECTION WITHIN THIS REGIME
UNTIL THE COLD FRONT ARRIVES DURING THE NIGHT. HOWEVER...IF SKIES
CAN LOCALLY CLEAR DURING THE AFTERNOON...THEN POCKETS OF STRONGER
SURFACE HEATING WOULD BOOST BUOYANCY AND YIELD DEEPENING UPDRAFTS
OCCURRING IN THE MIDST OF LARGE LOOPING HODOGRAPHS...WHICH WOULD
FAVOR ROTATING STORMS AND PERHAPS A BRIEF TORNADO.

..GARNER/JEWELL.. 02/18/2013
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cCatclaw
Posts: 150
Joined: Wed Jan 16, 2013 4:37 am
Location: Louisiana

Re: Louisiana Weather

Post by cCatclaw » Mon Feb 18, 2013 1:15 pm

As i predicted, Our first slight risk of the year while i visit my friends in Shreveport/Bossier City in 2013. :TUP2:

SPC AC 181624

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1024 AM CST MON FEB 18 2013

VALID 181630Z - 191200Z

...THERE IS A SLGT RISK OF SVR TSTMS OVER PARTS OF THE ARKLATEX
REGION...

...ARKLATEX...
MORNING WATER VAPOR LOOPS SHOW A DEEPENING SHORTWAVE TROUGH OVER
EASTERN CO/NM. THIS FEATURE IS EXPECTED TO ROTATE QUICKLY EASTWARD
ACROSS THE PLAINS AND INTO THE MS VALLEY OVERNIGHT. AHEAD OF THE
TROUGH...A COLD FRONT IS SURGING SOUTHEASTWARD ACROSS OK AND WILL
PROVIDE THE FOCUS FOR THUNDERSTORM DEVELOPMENT LATER TODAY AND
TONIGHT.

STRONG SOUTHERLY LOW LEVEL WINDS AHEAD OF THE FRONT ARE HELPING TO
TRANSPORT SURFACE DEWPOINTS IN THE 50S NORTHWARD INTO MUCH OF EAST
TX/WEST LA AND EVENTUALLY INTO MUCH OF AR. BROKEN CLOUDS IN THIS
REGION WILL YIELD A MARGINALLY UNSTABLE AIR MASS BY LATE AFTERNOON
WITH MLCAPE VALUES OF 500-700 J/KG AND LITTLE CONVECTIVE INHIBITION.
STORMS ARE LIKELY TO DEVELOP IN VICINITY OF THE COLD FRONT OVER
SOUTHEAST OK/WESTERN AR AND NORTHEAST TX BY 21-00Z...THEN SPREAD
SOUTHEASTWARD ACROSS THE SLIGHT RISK AREA THROUGH THE EVENING.
DESPITE RATHER LIMITED INSTABILITY...STRONG WIND FIELDS AND FORCING
ALONG THE FRONT MAY BE SUFFICIENT FOR AN ORGANIZED LINE OF
THUNDERSTORMS CAPABLE OF GUSTY/DAMAGING WINDS AND SOME HAIL.

..HART/MOSIER.. 02/18/2013
:TUP2: :TUP1: :TUP1: :TUP2:
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LARDLOGO
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Location: Sumas, Washington

Re: Louisiana Weather

Post by LARDLOGO » Mon Feb 18, 2013 1:58 pm

cCatclaw wrote:As i predicted, Our first slight risk of the year while i visit my friends in Shreveport/Bossier City in 2013. :TUP2:

SPC AC 181624

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1024 AM CST MON FEB 18 2013

VALID 181630Z - 191200Z

...THERE IS A SLGT RISK OF SVR TSTMS OVER PARTS OF THE ARKLATEX
REGION...

...ARKLATEX...
MORNING WATER VAPOR LOOPS SHOW A DEEPENING SHORTWAVE TROUGH OVER
EASTERN CO/NM. THIS FEATURE IS EXPECTED TO ROTATE QUICKLY EASTWARD
ACROSS THE PLAINS AND INTO THE MS VALLEY OVERNIGHT. AHEAD OF THE
TROUGH...A COLD FRONT IS SURGING SOUTHEASTWARD ACROSS OK AND WILL
PROVIDE THE FOCUS FOR THUNDERSTORM DEVELOPMENT LATER TODAY AND
TONIGHT.

STRONG SOUTHERLY LOW LEVEL WINDS AHEAD OF THE FRONT ARE HELPING TO
TRANSPORT SURFACE DEWPOINTS IN THE 50S NORTHWARD INTO MUCH OF EAST
TX/WEST LA AND EVENTUALLY INTO MUCH OF AR. BROKEN CLOUDS IN THIS
REGION WILL YIELD A MARGINALLY UNSTABLE AIR MASS BY LATE AFTERNOON
WITH MLCAPE VALUES OF 500-700 J/KG AND LITTLE CONVECTIVE INHIBITION.
STORMS ARE LIKELY TO DEVELOP IN VICINITY OF THE COLD FRONT OVER
SOUTHEAST OK/WESTERN AR AND NORTHEAST TX BY 21-00Z...THEN SPREAD
SOUTHEASTWARD ACROSS THE SLIGHT RISK AREA THROUGH THE EVENING.
DESPITE RATHER LIMITED INSTABILITY...STRONG WIND FIELDS AND FORCING
ALONG THE FRONT MAY BE SUFFICIENT FOR AN ORGANIZED LINE OF
THUNDERSTORMS CAPABLE OF GUSTY/DAMAGING WINDS AND SOME HAIL.

..HART/MOSIER.. 02/18/2013
:TUP2: :TUP1: :TUP1: :TUP2:
Sounds like fun, you go out and enjoy yourself! :TUP1:
Railfanning since December 28, 2009!
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cCatclaw
Posts: 150
Joined: Wed Jan 16, 2013 4:37 am
Location: Louisiana

Re: Louisiana Weather

Post by cCatclaw » Mon Feb 18, 2013 3:38 pm

We finally are issued a Severe Thunderstorm Watch while i visit my friends!!! :Grin: :cool:

SEL6

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 36
NWS STORM PREDICTION CENTER NORMAN OK
220 PM CST MON FEB 18 2013

THE NWS STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

WESTERN ARKANSAS
NORTHWEST LOUISIANA
SOUTHEAST OKLAHOMA
NORTHEAST TEXAS

EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 220 PM UNTIL 900
PM CST.

HAIL TO 1.5 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 75
STATUTE MILES EAST AND WEST OF A LINE FROM 25 MILES NORTH OF
RUSSELLVILLE ARKANSAS TO 30 MILES SOUTHEAST OF LONGVIEW TEXAS.
FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU6).

REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH
AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR
THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS
AND POSSIBLE WARNINGS. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY
DO PRODUCE TORNADOES.

DISCUSSION...SCATTERED THUNDERSTORMS ARE INCREASING AHEAD OF AN
APPROACHING COLD FRONT. STEEP LAPSE RATES AND COLD TEMPERATURES
ALOFT WILL PROMOTE A FEW INTENSE STORMS THIS AFTERNOON WITH A RISK
OF HAIL. CONVECTION WILL LIKELY BECOME MORE WIDESPREAD AND
ORGANIZED INTO A SQUALL LINE THIS EVENING WITH AN INCREASING RISK OF
LOCALLY DAMAGING WINDS ACROSS PARTS OF AR/LA.

AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 400. MEAN STORM
MOTION VECTOR 24035.


...HART
:TUP2: :TUP1: :TUP1: :TUP2:
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cCatclaw
Posts: 150
Joined: Wed Jan 16, 2013 4:37 am
Location: Louisiana

Re: Louisiana Weather

Post by cCatclaw » Mon Feb 18, 2013 3:56 pm

This one will go south of us.

TORNADO WARNING
LAC013-031-081-182130-
/O.NEW.KSHV.TO.W.0007.130218T2043Z-130218T2130Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SHREVEPORT LA
243 PM CST MON FEB 18 2013

THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A

* TORNADO WARNING FOR...
BIENVILLE PARISH IN NORTHWEST LOUISIANA...
SOUTHEASTERN DE SOTO PARISH IN NORTHWEST LOUISIANA...
THIS INCLUDES THE CITY OF MANSFIELD...
RED RIVER PARISH IN NORTHWEST LOUISIANA...

* UNTIL 330 PM CST

* AT 239 PM CST...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR
MANSFIELD...MOVING NORTHEAST AT 40 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
COUSHATTA...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WARNING MEANS THAT STRONG ROTATION HAS BEEN DETECTED IN THE
STORM. A TORNADO MAY ALREADY BE ON THE GROUND...OR IS EXPECTED TO
DEVELOP SHORTLY. IF YOU ARE IN THE PATH OF THIS DANGEROUS STORM...
MOVE INDOORS AND TO THE LOWEST LEVEL OF THE BUILDING. STAY AWAY FROM
WINDOWS. IF DRIVING...DO NOT SEEK SHELTER UNDER A HIGHWAY OVERPASS.

&&

LAT...LON 3214 9303 3215 9318 3211 9316 3208 9316
3186 9364 3204 9378 3248 9298 3224 9282
TIME...MOT...LOC 2043Z 240DEG 35KT 3201 9362

$$

14
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cCatclaw
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Joined: Wed Jan 16, 2013 4:37 am
Location: Louisiana

Re: Louisiana Weather

Post by cCatclaw » Mon Feb 18, 2013 4:09 pm

D :Censored: n, Areas around Texarkana are going to get pummeled by this one:

SEVERE THUNDERSTORM WARNING
ARC057-073-091-TXC037-067-182200-
/O.NEW.KSHV.SV.W.0043.130218T2102Z-130218T2200Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SHREVEPORT LA
302 PM CST MON FEB 18 2013

THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
SOUTHEASTERN BOWIE COUNTY IN NORTHEAST TEXAS...
NORTHEASTERN CASS COUNTY IN NORTHEAST TEXAS...
SOUTH CENTRAL HEMPSTEAD COUNTY IN SOUTHWEST ARKANSAS...
CENTRAL LAFAYETTE COUNTY IN SOUTHWEST ARKANSAS...
MILLER COUNTY IN SOUTHWEST ARKANSAS...

* UNTIL 400 PM CST

* AT 300 PM CST...THE PUBLIC REPORTED A SEVERE THUNDERSTORM CAPABLE
OF PRODUCING LARGE DAMAGING HAIL UP TO GOLF BALL SIZE. THIS STORM
WAS LOCATED NEAR QUEEN CITY...OR 8 MILES NORTH OF ATLANTA...AND
MOVING EAST AT 30 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
FOUKE...GENOA AND GARLAND...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. IF A TORNADO
IS SPOTTED... ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A STURDY
STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM.

&&

LAT...LON 3361 9373 3324 9356 3311 9423 3328 9431
TIME...MOT...LOC 2102Z 249DEG 27KT 3323 9416

$$

05
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cCatclaw
Posts: 150
Joined: Wed Jan 16, 2013 4:37 am
Location: Louisiana

Re: Louisiana Weather

Post by cCatclaw » Mon Feb 18, 2013 4:18 pm

Another tornado...

TORNADO WARNING
ARC057-073-091-182200-
/O.NEW.KSHV.TO.W.0008.130218T2115Z-130218T2200Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SHREVEPORT LA
315 PM CST MON FEB 18 2013

THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A

* TORNADO WARNING FOR...
SOUTH CENTRAL HEMPSTEAD COUNTY IN SOUTHWEST ARKANSAS...
CENTRAL LAFAYETTE COUNTY IN SOUTHWEST ARKANSAS...
THIS INCLUDES THE CITY OF LEWISVILLE...
CENTRAL MILLER COUNTY IN SOUTHWEST ARKANSAS...

* UNTIL 400 PM CST

* AT 309 PM CST...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 8 MILES WEST OF
FOUKE...OR 12 MILES SOUTHEAST OF WAKE VILLAGE...MOVING EAST AT 35
MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO GENOA
AND GARLAND...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WARNING MEANS THAT STRONG ROTATION HAS BEEN DETECTED IN THE
STORM. A TORNADO MAY ALREADY BE ON THE GROUND...OR IS EXPECTED TO
DEVELOP SHORTLY. IF YOU ARE IN THE PATH OF THIS DANGEROUS STORM...
MOVE INDOORS AND TO THE LOWEST LEVEL OF THE BUILDING. STAY AWAY FROM
WINDOWS. IF DRIVING...DO NOT SEEK SHELTER UNDER A HIGHWAY OVERPASS.

&&

LAT...LON 3356 9364 3326 9351 3315 9403 3318 9405
3338 9404
TIME...MOT...LOC 2114Z 251DEG 33KT 3327 9398

$$

05
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cCatclaw
Posts: 150
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Location: Louisiana

Re: Louisiana Weather

Post by cCatclaw » Mon Feb 18, 2013 4:30 pm

User avatar
cCatclaw
Posts: 150
Joined: Wed Jan 16, 2013 4:37 am
Location: Louisiana

Re: Louisiana Weather

Post by cCatclaw » Mon Feb 18, 2013 4:59 pm

TORNADO WARNING
ARC027-057-073-099-182215-
/O.NEW.KSHV.TO.W.0009.130218T2150Z-130218T2215Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SHREVEPORT LA
350 PM CST MON FEB 18 2013

THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A

* TORNADO WARNING FOR...
NORTH CENTRAL COLUMBIA COUNTY IN SOUTHWEST ARKANSAS...
SOUTHEASTERN HEMPSTEAD COUNTY IN SOUTHWEST ARKANSAS...
NORTHEASTERN LAFAYETTE COUNTY IN SOUTHWEST ARKANSAS...
THIS INCLUDES THE CITY OF STAMPS...
SOUTHERN NEVADA COUNTY IN SOUTHWEST ARKANSAS...

* UNTIL 415 PM CST

* AT 348 PM CST...TRAINED WEATHER SPOTTERS REPORTED A FUNNEL CLOUD
WITH THIS STORM...MOVING NORTHEAST AT 45 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
BUCKNER...BODCAW...WILLISVILLE AND ROSSTON...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WARNING MEANS THAT STRONG ROTATION HAS BEEN DETECTED IN THE
STORM. A TORNADO MAY ALREADY BE ON THE GROUND...OR IS EXPECTED TO
DEVELOP SHORTLY. IF YOU ARE IN THE PATH OF THIS DANGEROUS STORM...
MOVE INDOORS AND TO THE LOWEST LEVEL OF THE BUILDING. STAY AWAY FROM
WINDOWS. IF DRIVING...DO NOT SEEK SHELTER UNDER A HIGHWAY OVERPASS.

&&

LAT...LON 3364 9326 3343 9313 3329 9353 3348 9362
TIME...MOT...LOC 2149Z 246DEG 39KT 3340 9354

$$

05
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cCatclaw
Posts: 150
Joined: Wed Jan 16, 2013 4:37 am
Location: Louisiana

Re: Louisiana Weather

Post by cCatclaw » Mon Feb 18, 2013 5:02 pm

I'm going to abandon this topic since it has run it's course.
:Closed4:
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