Multi-day tornado outbreak likely (April 9-11)

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Re: Multi-day tornado outbreak likely (April 9-11)

#41 Postby cycloneye » Wed Apr 10, 2013 2:51 pm

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0235 PM CDT WED APR 10 2013

VALID 102000Z - 111200Z

...THERE IS A SLGT RISK OF SVR TSTMS LATE THIS AFTERNOON AND EVENING
IN A CORRIDOR ACROSS PARTS OF THE LOWER AND MIDDLE MISSISSIPPI
VALLEYS....AS WELL AS A CORRIDOR NORTH OF THE OHIO RIVER INTO THE
NORTHERN MID ATLANTIC COAST...

...20Z OUTLOOK UPDATE...
NO SUBSTANTIVE CHANGES HAVE BEEN MADE TO THE 1630Z OUTLOOK...ASIDE
FROM DECREASING AREAL COVERAGE WITH RISK FOR THUNDERSTORMS ACROSS
THE FLORIDA PENINSULA.

SUBTROPICAL RIDGING CENTERED OFF THE SOUTH ATLANTIC COAST REMAINS
STRONG...WITH BROADLY ANTICYCLONIC LOW-LEVEL FLOW LINGERING AS FAR
WEST AS THE LOWER MISSISSIPPI VALLEY...AND AS FAR NORTH AS THE OHIO
VALLEY/NORTHERN MID ATLANTIC COAST REGION. SEVERAL CLUSTERS OF
THUNDERSTORMS ARE CURRENTLY EVOLVING ALONG THE EDGE OF STRONGER
CAPPING ON NORTHWESTERN AND NORTHERN PERIPHERY OF THIS FEATURE...
WHERE WEAK TO MODERATE INSTABILITY IN THE PRESENCE OF MODERATELY
STRONG AND SHEARED DEEP LAYER WESTERLY FLOW WILL SUPPORT A RISK FOR
DAMAGING WIND GUSTS AND HAIL LATE THIS AFTERNOON AND EVENING.

FORCING ASSOCIATED WITH A SHORT WAVE IMPULSE LIFTING OUT OF THE BASE
OF AMPLIFIED UPPER TROUGHING ACROSS THE PLAINS/SOUTHERN ROCKIES
REGION DOES STILL APPEAR LIKELY TO ENHANCE SEVERE WEATHER POTENTIAL
IN AT LEAST A NARROW CORRIDOR ACROSS CENTRAL/EASTERN ARKANSAS INTO
SOUTHEAST MISSOURI LATE THIS AFTERNOON AND EVENING. BETWEEN THE
SUBTROPICAL RIDGING...AND COLD AIR WHICH HAS DAMMED SOUTHWARD
THROUGH THE PLAINS...AN AXIS OF SURFACE PRESSURE FALLS IS EXPECTED
TO DEVELOP...AND FOCUS STRONGER BOUNDARY LAYER BASED STORM
DEVELOPMENT BY 23-00Z. HIGH BOUNDARY LAYER MOISTURE CONTENT AND
HUMIDITY...MODERATELY LARGE CAPE...STRONG DEEP LAYER SHEAR AND
SIZABLE CLOCKWISE CURVED LOW-LEVEL HODOGRAPHS MAY PROVE FAVORABLE
FOR THE DEVELOPMENT OF DISCRETE SUPERCELLS CAPABLE OF PRODUCING
TORNADOES...IN ADDITION TO LARGE HAIL. THE WINDOW OF OPPORTUNITY
FOR THIS ACTIVITY...BEFORE THE COLD FRONT TO THE WEST BEGINS TO
ADVANCE MORE RAPIDLY EASTWARD...AND THE BOUNDARY LAYER AHEAD OF IT
BEGINS TO STABILIZE...MAY BE SOMEWHAT LIMITED...PRECLUDING AN
UPGRADE OF SEVERE PROBABILITIES AT THE PRESENT TIME.

..KERR.. 04/10/2013

.PREV DISCUSSION... /ISSUED 1122 AM CDT WED APR 10 2013/

...NRN LA AND CENTRAL/ERN AR TO IL THROUGH TONIGHT...
A MIDLEVEL LOW IS EXPECTED TO DEEPEN OVER THE CENTRAL PLAINS TODAY
AND THE MID MO VALLEY TONIGHT...AS AN EMBEDDED JET STREAK ROTATES
NNEWD FROM W TX TO OK/KS. IN RESPONSE...SLOW DEEPENING OF THE
SURFACE LOW IS EXPECTED NEAR STL...WHILE THE TRAILING COLD FRONT
MOVES ONLY SLOWLY EWD ACROSS THE OZARK PLATEAU THROUGH THIS
AFTERNOON...AND MORE QUICKLY SEWD TOWARD THE TX COAST. IN ADVANCE
OF THE FRONT...A PLUME OF RICH LOW-LEVEL MOISTURE ORIGINATING FROM
THE NW CARIBBEAN HAS SPREAD INLAND ACROSS LA/AR...WHERE BOUNDARY
LAYER DEWPOINTS HAVE REACHED THE UPPER 60S TO NEAR 70 F. THIS
MOISTENING HAS OCCURRED BENEATH A REMNANT EML PLUME WITH MIDLEVEL
LAPSE RATES OF 7.5-8.5 C/KM.

VISIBLE IMAGERY SHOWS SOME CLOUD BREAKS ACROSS MUCH OF AR...WHICH
WILL ALLOW SURFACE TEMPERATURES TO WARM WELL INTO THE 70S THIS
AFTERNOON...AND SUPPORT MLCAPE NEAR 2500 J/KG. ALSO...THE SLY LLJ
WILL INCREASE GRADUALLY THIS AFTERNOON THROUGH EARLY TONIGHT FROM
CENTRAL/ERN AR TO IL/INDIANA...IN RESPONSE TO THE DEEPENING MID MS
VALLEY LOW. LIKEWISE...MID-UPPER SWLY FLOW WILL INCREASE WITH THE
GLANCING INFLUENCE OF THE JET STREAK EJECTING NNEWD OVER ERN OK/KS.
THE NET RESULT WILL BE AN ENVIRONMENT WITH MODERATE INSTABILITY AND
INCREASINGLY FAVORABLE LOW-LEVEL AND DEEP-LAYER VERTICAL SHEAR FOR
SUPERCELLS /EFFECTIVE SRH APPROACHING 300 M2 PER S2 AND EFFECTIVE
BULK SHEAR NEAR 50 KT/.

GIVEN THE RELATIVELY SLOW MOTION OF THE COLD FRONT ACROSS WRN AR
THIS AFTERNOON...AND SUBSTANTIALLY RICHER LOW-LEVEL MOISTURE ACROSS
LA/AR COMPARED TO AREAS FARTHER W IN PREVIOUS DAYS...THE RISK FOR
SUPERCELLS BOTH ALONG AND A LITTLE AHEAD OF THE COLD FRONT WILL BE
GREATER COMPARED TO PREVIOUS DAYS. THIS WILL SUPPORT AN INCREASING
RISK FOR A FEW TORNADOES LATER THIS AFTERNOON INTO THIS EVENING
ACROSS CENTRAL/ERN AR INTO SE MO...AND POTENTIALLY AN ISOLATED
STRONG TORNADO IF A SEMI-DISCRETE STORM CAN BE MAINTAINED FOR A
COUPLE OF HOURS. LARGE HAIL AND DAMAGING WINDS CAN ALSO BE EXPECTED
WITH WHAT SHOULD EVOLVE INTO A SOMEWHAT SOLID FRONTAL SQUALL LINE BY
EARLY TONIGHT. THE ERN EXTENT OF THE SEVERE RISK OVERNIGHT WILL BE
LIMITED BY SLOW EWD MOTION OF THE FRONT...AND BY WEAKENING
INSTABILITY ACROSS ERN MS/AL INTO MIDDLE TN WHERE LOW-LEVEL IS MORE
LIMITED BY TRAJECTORIES FROM WITHIN THE LINGERING RIDGE OVER THE SE
STATES.

...OH VALLEY TO MID ATLANTIC THROUGH THIS EVENING...
A FEW SMALL CLUSTERS OF THUNDERSTORMS HAVE ALREADY DEVELOPED ACROSS
OH AS OF LATE MORNING...AND THIS CONVECTION SHOULD PERSIST THROUGH
THE AFTERNOON WHILE SPREADING EWD INTO PA. INSTABILITY IS NOT
PARTICULARLY STRONG...WITH THE GREATEST LOW-LEVEL MOISTURE FEED INTO
THE OH VALLEY FROM THE SW...BUT STRONG SURFACE HEATING AND STEEP
LOW-LEVEL LAPSE RATES EXTEND EWD TO THE MID ATLANTIC COAST. GIVEN
THE LARGELY UNIDIRECTIONAL WLY WIND PROFILES WITH UP TO 50 KT FLOW
AROUND 500 MB...ISOLATED DAMAGING GUSTS WILL BE POSSIBLE...AS WELL
AS MARGINALLY SEVERE HAIL W OF THE APPALACHIANS.

CLICK TO GET WUUS01 PTSDY1 PRODUCT

Image
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#42 Postby WeatherGuesser » Wed Apr 10, 2013 3:18 pm

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 90
NWS STORM PREDICTION CENTER NORMAN OK
150 PM CDT WED APR 10 2013

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

SOUTHERN ILLINOIS
SOUTH CENTRAL AND SOUTHEAST MISSOURI


EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 150 PM UNTIL
900 PM CDT.

TORNADOES...HAIL TO 2.5 INCHES IN DIAMETER...THUNDERSTORM WIND
GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE
AREAS.

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 80 STATUTE
MILES EAST AND WEST OF A LINE FROM 25 MILES NORTHEAST OF SCOTT
AFB ILLINOIS TO 35 MILES EAST SOUTHEAST OF WEST PLAINS MISSOURI.
FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU0).

REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND 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.

OTHER WATCH INFORMATION...CONTINUE...WW 88...WW 89...

DISCUSSION...SURFACE HEATING/DESTABILIZATION ACROSS SRN/ERN MO IS
CONTRIBUTING TO MODERATE INSTABILITY IN THE WARM SECTOR...WITH A
WEAKENING CAP AND INCREASING PROBABILITY FOR THUNDERSTORM INITIATION
IN THE NEXT COUPLE OF HOURS. GIVEN THE MODERATE INSTABILITY AND MID
60S BOUNDARY LAYER DEWPOINTS...AN INCREASE IN VERTICAL SHEAR
/ALREADY NOTED IN THE VWP FROM SAINT LOUIS/ WILL RESULT IN AN
INCREASING RISK FOR SUPERCELLS WITH TORNADOES AND LARGE HAIL. LATER
THIS AFTERNOON/EVENING...CONVECTION SHOULD EVOLVE INTO MORE OF A
LINE ALONG THE COLD FRONT IN MO...WITH A CONTINUED RISK FOR EMBEDDED
CIRCULATIONS AND DAMAGING WINDS.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
550. MEAN STORM MOTION VECTOR 23040.


...THOMPSON
Last edited by WeatherGuesser on Wed Apr 10, 2013 3:23 pm, edited 1 time in total.
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Re: Multi-day tornado outbreak likely (April 9-11)

#43 Postby cycloneye » Wed Apr 10, 2013 3:18 pm

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE LITTLE ROCK AR
308 PM CDT WED APR 10 2013

THE NATIONAL WEATHER SERVICE IN LITTLE ROCK HAS ISSUED A

* TORNADO WARNING FOR...
NORTHEASTERN YELL COUNTY IN CENTRAL ARKANSAS...
SOUTHEASTERN POPE COUNTY IN CENTRAL ARKANSAS...
NORTH CENTRAL PERRY COUNTY IN CENTRAL ARKANSAS...
NORTHWESTERN CONWAY COUNTY IN CENTRAL ARKANSAS...

* UNTIL 400 PM CDT

* AT 305 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS SEVERE
STORM WAS LOCATED 5 MILES EAST OF OLA...OR 12 MILES SOUTH OF
DARDANELLE. DOPPLER RADAR SHOWED THIS SEVERE STORM MOVING NORTHEAST
AT 55 MPH.

* LOCATIONS IN THE PATH OF THIS DANGEROUS STORM INCLUDE...
RUSSELLVILLE... DARDANELLE... TARAL...
POTTSVILLE... PETIT JEAN SP... PETIT JEAN MTN...
OLA... LAKE ATKINS... JERUSALEM...
HECTOR... HATTIEVILLE... HAPPY BEND...
GALLA CREEK WMA... DARDANELLE LOCK AND DAM...
CARDEN BOTTOMS... BLICK... ATKINS...
PONTOON...


THIS INCLUDES INTERSTATE 40 BETWEEN MILE MARKERS 81 AND 101.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 3538 9267 3496 9306 3503 9326 3555 9304
TIME...MOT...LOC 2008Z 204DEG 46KT 3508 9311
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#44 Postby WeatherGuesser » Wed Apr 10, 2013 3:20 pm

This section was omitted from the post on the previous page regarding Arkansas:


URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 89
NWS STORM PREDICTION CENTER NORMAN OK
120 PM CDT WED APR 10 2013

THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
Last edited by WeatherGuesser on Wed Apr 10, 2013 3:24 pm, edited 1 time in total.
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#45 Postby WeatherGuesser » Wed Apr 10, 2013 3:21 pm

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 88...RESENT
NWS STORM PREDICTION CENTER NORMAN OK
155 PM EDT WED APR 10 2013

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

EAST CENTRAL ILLINOIS
CENTRAL INDIANA
WEST CENTRAL AND CENTRAL OHIO


EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 155 PM UNTIL
900 PM EDT.

HAIL TO 2 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 45
STATUTE MILES NORTH AND SOUTH OF A LINE FROM 25 MILES WEST
SOUTHWEST OF MATTOON ILLINOIS TO 20 MILES EAST OF MANSFIELD OHIO.
FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU8).

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...SEVERAL CLUSTERS OF THUNDERSTORMS ARE DEVELOPING ALONG
A FRONTAL ZONE FROM CENTRAL IL EWD INTO INDIANA AND OH. A FEED OF
MODERATE INSTABILITY FROM THE SW AND DEEP WSWLY-WLY WIND PROFILES
WILL SUPPORT ORGANIZED CLUSTERS CAPABLE OF PRODUCING DAMAGING WINDS
AND LARGE HAIL THROUGH THE AFTERNOON.

AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM
MOTION VECTOR 27035.


...THOMPSON
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Re: Multi-day tornado outbreak likely (April 9-11)

#46 Postby cycloneye » Wed Apr 10, 2013 4:12 pm

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE LITTLE ROCK AR
409 PM CDT WED APR 10 2013

THE NATIONAL WEATHER SERVICE IN LITTLE ROCK HAS ISSUED A

* TORNADO WARNING FOR...
CENTRAL VAN BUREN COUNTY IN NORTH CENTRAL ARKANSAS...
SOUTHWESTERN STONE COUNTY IN NORTH CENTRAL ARKANSAS...
EASTERN SEARCY COUNTY IN NORTH CENTRAL ARKANSAS...
NORTHEASTERN CONWAY COUNTY IN CENTRAL ARKANSAS...

* UNTIL 445 PM CDT

* AT 406 PM CDT...TRAINED WEATHER SPOTTERS REPORTED A FUNNEL CLOUD.
NATIONAL WEATHER SERVICE DOPPLER RADAR ALSO INDICATED A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS SEVERE STORM WAS
LOCATED NEAR BLICK...OR 15 MILES NORTH OF MORRILTON. DOPPLER RADAR
SHOWED THIS SEVERE STORM MOVING NORTH AT 55 MPH.

* LOCATIONS IN THE PATH OF THIS TORNADO INCLUDE...
MARSHALL... CLINTON... WOOLUM...
WATTS... THOLA... ROCKY HILL...
OLD LEXINGTON... MT EVANS... MIDDLETON...
LANTY... ELBERTA... ELBA...
CLEVELAND... CLAUDE... CHOCTAW...
BLICK... TIMBO... SCOTLAND...


PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 3603 9261 3583 9220 3529 9261 3534 9282
TIME...MOT...LOC 2109Z 198DEG 48KT 3541 9267

$$
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Re: Multi-day tornado outbreak likely (April 9-11)

#47 Postby cycloneye » Wed Apr 10, 2013 4:54 pm

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE LITTLE ROCK AR
447 PM CDT WED APR 10 2013

THE NATIONAL WEATHER SERVICE IN LITTLE ROCK HAS ISSUED A

* TORNADO WARNING FOR...
EAST CENTRAL VAN BUREN COUNTY IN NORTH CENTRAL ARKANSAS...
STONE COUNTY IN NORTH CENTRAL ARKANSAS...
NORTHWESTERN CLEBURNE COUNTY IN NORTH CENTRAL ARKANSAS...

* UNTIL 530 PM CDT

* AT 445 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS SEVERE
STORM WAS LOCATED 3 MILES EAST OF CLINTON. DOPPLER RADAR SHOWED
THIS SEVERE STORM MOVING NORTHEAST AT 40 MPH.

* LOCATIONS IN THE PATH OF THIS DANGEROUS STORM INCLUDE...
MOUNTAIN VIEW... CLINTON... SHIRLEY...
OLD LEXINGTON... HERPEL...
FAIRFIELD BAY MARINA... FAIRFIELD BAY...
CHOCTAW REC AREA... BLANCHARD SPGS CAVERN...
TURKEY CREEK... RUSHING... PARMA...
NEWNATA... HANOVER... FOX...
ARLBERG... ALLISON... WEST RICHWOODS...


PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 3596 9211 3593 9211 3592 9209 3594 9205
3592 9202 3592 9200 3591 9196 3548 9236
3558 9254 3599 9219
TIME...MOT...LOC 2147Z 214DEG 37KT 3561 9238

$$

58
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#48 Postby WeatherGuesser » Wed Apr 10, 2013 6:41 pm

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 92
NWS STORM PREDICTION CENTER NORMAN OK
545 PM CDT WED APR 10 2013

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

SOUTHEAST ARKANSAS
NORTHEAST LOUISIANA
WESTERN MISSISSIPPI

EFFECTIVE THIS WEDNESDAY AFTERNOON AND THURSDAY MORNING FROM 545
PM UNTIL 100 AM CDT.

TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND
GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE
AREAS.

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 60 STATUTE
MILES EAST AND WEST OF A LINE FROM 25 MILES SOUTHWEST OF NATCHEZ
MISSISSIPPI TO 35 MILES NORTH OF GREENVILLE MISSISSIPPI. FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU2).

REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND 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.

OTHER WATCH INFORMATION...CONTINUE...WW 88...WW 89...WW 90...WW
91...

DISCUSSION...TSTMS ARE FORMING ATTM IN NE LA AND SW MS...ALONG LINE
OF CONFLUENCE AHEAD OF SW AR/NW LA COLD FRONT. REGION APPEARS TO
BEING GLANCED BY ASCENT WITH JET STREAK/AREA OF UPR DIFFLUENCE
ROUNDING SE QUADRANT OF SRN PLNS UPR TROUGH. RICH LOW-LVL MOISTURE
AND STRENGTH OF LOW TO MID-LVL FLOW PER AREA VWP DATA SUGGEST
POTENTIAL FOR SUPERCELLS WITH SVR HAIL..HIGH WIND...AND POSSIBLY A
COUPLE TORNADOES.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
500. MEAN STORM MOTION VECTOR 21035.


...CORFIDI
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#49 Postby WeatherGuesser » Wed Apr 10, 2013 8:15 pm

I've seen a string of TOR Warnings for St. Louis. Anybody getting any confirmations of anything?
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#50 Postby TropicalAnalystwx13 » Wed Apr 10, 2013 10:15 pm

WeatherGuesser wrote:I've seen a string of TOR Warnings for St. Louis. Anybody getting any confirmations of anything?

3 tornadoes touched down causing extensive damage; at least, that's whats being reported.
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#51 Postby summersquall » Thu Apr 11, 2013 7:28 am

http://www.theweatherspace.com/2013/04/ ... wednesday/

These poor people. My thoughts and prayers are with them. Stay safe everyone.
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Re: Multi-day tornado outbreak likely (April 9-11)

#52 Postby cycloneye » Thu Apr 11, 2013 12:19 pm

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NEW ORLEANS LA
1207 PM CDT THU APR 11 2013

THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS ISSUED A

* TORNADO WARNING FOR...
CENTRAL ST. TAMMANY PARISH IN SOUTHEAST LOUISIANA...
THIS INCLUDES THE CITIES OF...MANDEVILLE...COVINGTON...
SOUTHEASTERN TANGIPAHOA PARISH IN SOUTHEAST LOUISIANA...

* UNTIL 1230 PM CDT

* AT 1206 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 9 MILES WEST OF
MADISONVILLE...OR 14 MILES WEST OF MANDEVILLE...MOVING NORTHEAST AT
40 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO ABITA
SPRINGS


PRECAUTIONARY/PREPAREDNESS ACTIONS...

THE SAFEST PLACE TO BE DURING A TORNADO IS UNDER A WORKBENCH OR OTHER
PIECE OF STURDY FURNITURE. SEEK SHELTER ON THE LOWEST FLOOR OF THE
BUILDING IN AN INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE
BLANKETS OR PILLOWS TO COVER YOUR BODY AND ALWAYS STAY AWAY FROM
WINDOWS.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 300 PM CDT THURSDAY AFTERNOON
FOR SOUTHEAST LOUISIANA AND SOUTHERN MISSISSIPPI.

&&

LAT...LON 3065 8997 3037 8983 3033 9006 3036 9010
3036 9013 3038 9020 3034 9026 3029 9029
3029 9035 3037 9039
TIME...MOT...LOC 1706Z 244DEG 34KT 3036 9029

$$
7/ARM
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Re: Multi-day tornado outbreak likely (April 9-11)

#53 Postby cycloneye » Thu Apr 11, 2013 12:45 pm

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 96
NWS STORM PREDICTION CENTER NORMAN OK
1200 PM CDT THU APR 11 2013

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

WEST CENTRAL INTO NORTH CENTRAL ALABAMA
SOUTHERN MIDDLE TENNESSEE

EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM NOON UNTIL 700
PM CDT.

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

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 55 STATUTE
MILES EAST AND WEST OF A LINE FROM 30 MILES EAST SOUTHEAST OF
MERIDIAN MISSISSIPPI TO 25 MILES NORTH NORTHWEST OF HUNTSVILLE
ALABAMA. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU6).

REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND 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.

OTHER WATCH INFORMATION...CONTINUE...WW 95...

DISCUSSION...PRE-FRONTAL SUPERCELL HAS FORMED IN E CENTRAL MS AND
WILL CONTINUE TO MOVE NEWD INTO WRN AL AROUND THE TIME THE STORM
MERGES WITH THE FRONTAL BAND OF CONVECTION IMMEDIATELY TO ITS W.
SOME SURFACE HEATING IN A FEW CLOUD BREAKS AND INCREASING LOW-LEVEL
MOISTURE WILL RESULT IN DESTABILIZATION AND THE LIKELIHOOD THAT
STORMS IN THE LINE WILL STRENGTHEN THIS AFTERNOON WITH AN ATTENDANT
RISK FOR DAMAGING WINDS. THE TORNADO THREAT WILL BE LARGELY
DEPENDENT ON THE FORMATION OF MORE DISCRETE STORMS AHEAD OF THE
LINE...THOUGH LOW-LEVEL SHEAR WILL BE SUFFICIENT FOR CIRCULATIONS
WITHIN THE LINE.

AVIATION...TORNADOES AND 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
500. MEAN STORM MOTION VECTOR 24040.


...THOMPSON


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#54 Postby Cyclenall » Thu Apr 11, 2013 1:01 pm

I had CNN on when I was on the john and they were saying a large and extremely dangerous tornado was on the ground!!!!!!!! :eek: I couldn't believe it, right now!? That was the 2nd time I was on the toilet this year when I heard CNN break into live coverage with a tornado threatening areas :x . It looks like a nice hook and I'm watching Brett Adair on live stream of what is a large tornado!:

Link: http://livestormsnow.com/brett-adair/
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Re: Multi-day tornado outbreak likely (April 9-11)

#55 Postby John Cobbler » Thu Apr 11, 2013 1:10 pm

Jackson news reporting a fatality related to the tornado.

http://www.wapt.com/weather/Mississippi ... index.html
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#56 Postby Cyclenall » Thu Apr 11, 2013 1:12 pm

How come no one is posting when there is a large and extremely dangerous tornado on the ground right now with chasers on it??? There is even a death reported and another tornado warning with a likely tornado heading for Hattiesburg MS (yes again). This is crazy stuff!

Link to James Spann stream: http://www.abc3340.com/category/238084/live-stream

WTOK in Meridian MS: http://www.wtok.com/livestream

WBRC in Birmingham AL: http://www.foxalabamalive.com/

Brantley French: http://www.chasertv.com/wall/

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
111 PM CDT THU APR 11 2013

MSC035-073-111830-
/O.CON.KJAN.TO.W.0048.000000T0000Z-130411T1830Z/
LAMAR MS-FORREST MS-
111 PM CDT THU APR 11 2013

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 130 PM CDT FOR NORTHERN
FORREST AND LAMAR COUNTIES...

AT 111 PM CDT...METEOROLOGISTS CONTINUE TO TRACK A LIKELY TORNADO.
THIS TORNADO WAS LOCATED 6 MILES SOUTH OF WEST HATTIESBURG MOVING
NORTHEAST AT 50 MPH.


THE TORNADO WILL BE NEAR...
HATTIESBURG AND RAWLS SPRINGS BY 120 PM CDT...
MACEDONIA AND PETAL BY 125 PM CDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WARNING MEANS THAT A TORNADO IS OCCURRING OR IMMINENT. YOU
SHOULD ACTIVATE YOUR TORNADO ACTION PLAN AND TAKE COVER NOW.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 300 PM CDT THURSDAY AFTERNOON
FOR EASTERN MISSISSIPPI.

LAT...LON 3124 8952 3133 8958 3143 8948 3143 8914
3139 8914 3100 8964 3100 8966
TIME...MOT...LOC 1811Z 234DEG 42KT 3124 8937

$$

GRG
TORNADO WARNING
LAC103-MSC045-111845-
/O.NEW.KLIX.TO.W.0029.130411T1809Z-130411T1845Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NEW ORLEANS LA
109 PM CDT THU APR 11 2013

THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS ISSUED A

* TORNADO WARNING FOR...
EAST CENTRAL ST. TAMMANY PARISH IN SOUTHEAST LOUISIANA...
WEST CENTRAL HANCOCK COUNTY IN SOUTHERN MISSISSIPPI...

* UNTIL 145 PM CDT

* AT 109 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 9 MILES
SOUTHWEST OF PEARL RIVER...OR NEAR SLIDELL...MOVING NORTHEAST AT 40
MPH.


* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
STENNIS SPACE CENTER

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THE SAFEST PLACE TO BE DURING A TORNADO IS UNDER A WORKBENCH OR OTHER
PIECE OF STURDY FURNITURE. SEEK SHELTER ON THE LOWEST FLOOR OF THE
BUILDING IN AN INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE
BLANKETS OR PILLOWS TO COVER YOUR BODY AND ALWAYS STAY AWAY FROM
WINDOWS.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 300 PM CDT THURSDAY AFTERNOON
FOR SOUTHEAST LOUISIANA AND SOUTHERN MISSISSIPPI.

&&

LAT...LON 3048 8954 3036 8946 3026 8987 3031 8989
TIME...MOT...LOC 1809Z 247DEG 35KT 3031 8981

$$

7/ARM
TORNADO WARNING
ALC057-075-111915-
/O.NEW.KBMX.TO.W.0010.130411T1808Z-130411T1915Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE BIRMINGHAM AL
108 PM CDT THU APR 11 2013

THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A

* TORNADO WARNING FOR...
WESTERN FAYETTE COUNTY IN WEST CENTRAL ALABAMA...
SOUTHEASTERN LAMAR COUNTY IN WEST CENTRAL ALABAMA...

* UNTIL 215 PM CDT

* AT 105 PM CDT...THE NATIONAL WEATHER SERVICE WAS TRACKING A
CONFIRMED TORNADO NEAR ETHELSVILLE...OR 12 MILES NORTHWEST OF
CARROLLTON. DOPPLER RADAR SHOWED THIS TORNADO MOVING NORTHEAST AT
45 MPH.


* LOCATIONS IMPACTED INCLUDE...
MILLPORT...VERNON...FAYETTE...KENNEDY...BELK...BLOOMING GROVE...
BLUFF...BEAVERTON...MELBORNE AND STAR.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE
LOWEST FLOOR OF A STURDY BUILDING.

&&

TO REPORT SEVERE WEATHER...
CALL 1-800-856-0758 OR TWEET YOUR REPORT USING HASHTAG ALWX

LAT...LON 3402 8797 3402 8795 3392 8795 3392 8764
3388 8763 3387 8760 3352 8795 3353 8796
3353 8826 3354 8826
TIME...MOT...LOC 1808Z 214DEG 39KT 3345 8818

$$

GRANTHAM
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
105 PM CDT THU APR 11 2013

ALC107-111830-
/O.CON.KBMX.TO.W.0009.000000T0000Z-130411T1830Z/
PICKENS AL-
105 PM CDT THU APR 11 2013

...A TORNADO WARNING REMAINS IN EFFECT FOR NORTHWESTERN PICKENS
COUNTY UNTIL 130 PM CDT...

AT 105 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
CONFIRMED TORNADO. THIS TORNADO WAS LOCATED NEAR ETHELSVILLE...OR 12
MILES WEST OF REFORM...MOVING NORTHEAST AT 45 MPH.


LOCATIONS IMPACTED INCLUDE...
SHAW.

TO REPORT SEVERE WEATHER...CALL 1-800-856-0758.

LAT...LON 3335 8820 3336 8830 3353 8828 3352 8800
TIME...MOT...LOC 1805Z 217DEG 37KT 3343 8819

$$

GRANTHAM
Last edited by Cyclenall on Thu Apr 11, 2013 2:05 pm, edited 1 time in total.
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#57 Postby WeatherGuesser » Thu Apr 11, 2013 1:13 pm

^ If you're talking about the one for NO, it looks like it's right near or under the Cone Of Silence (near the radar site), so I can't see too much detail.
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#58 Postby Cyclenall » Thu Apr 11, 2013 1:25 pm

Image

From 46 minutes ago.
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Re: Multi-day tornado outbreak likely (April 9-11)

#59 Postby MGC » Thu Apr 11, 2013 2:53 pm

The squall line has just about passed through. Not much wind but a good rain for 20 min....a little thunder......MGC
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Re: Multi-day tornado outbreak likely (April 9-11)

#60 Postby cycloneye » Thu Apr 11, 2013 3:28 pm

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE BIRMINGHAM AL
317 PM CDT THU APR 11 2013

THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A

* TORNADO WARNING FOR...
NORTHEASTERN WINSTON COUNTY IN NORTHWEST ALABAMA...

* UNTIL 345 PM CDT

* AT 316 PM CDT...THE NATIONAL WEATHER SERVICE INDICATED A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM
WAS LOCATED NEAR CORINTH REC AREA...OR 8 MILES NORTHWEST OF
ARLEY...AND MOVING NORTH AT 40 MPH.

* LOCATIONS IMPACTED INCLUDE...
ADDISON...MORELAND...INMANFIELD...BRUSHY LAKE...GRAYSON AND UPSHAW.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE
LOWEST FLOOR OF A STURDY BUILDING.

&&

TO REPORT SEVERE WEATHER...
CALL 1-800-856-0758 OR TWEET YOUR REPORT USING HASHTAG ALWX

LAT...LON 3430 8733 3430 8713 3408 8724 3415 8745
3431 8738 3431 8734
TIME...MOT...LOC 2017Z 201DEG 35KT 3420 8731

$$

GRANTHAM
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