Calderon Posted March 2, 2012 Share Posted March 2, 2012 The overcast deck is breaking and quite a bit of sunshine is starting to filter in now across the Nashville area. Link to comment Share on other sites More sharing options...
Ed Lizard Posted March 2, 2012 Share Posted March 2, 2012 if one just used the NAM simulated radar, one wouldn't think there'd be that many supercells today. Link to comment Share on other sites More sharing options...
BrentO Posted March 2, 2012 Share Posted March 2, 2012 The overcast deck is breaking and quite a bit of sunshine is starting to filter in now across the Nashville area. same up here in Evansville, as of 8:45am temp was 62 and dew point was 59 .......amazing since i woke up that 5:30 and the dew point was 33. Link to comment Share on other sites More sharing options...
TNE Posted March 2, 2012 Share Posted March 2, 2012 TNE, just had to point out, 850 mb vorticity is not convective energy. The yellow and orange areas are maxima of positive vorticity at the 850 mb level of the atmosphere. Vorticity refers to rotation and positive vorticity is counterclockwise rotation. That's why the most notable 850 mb vort max is in the 850 mb low center northeast of Lake Huron in the images you posted. Vorticity maxima at the lower and mid levels can obviously aid in forcing upward motion, but it is not convective energy, or Convective Available Potential Energy (CAPE), which refers to the amount of instability present in the atmosphere. You most certainly do not need instability to have vorticity. Thanks but it is my fault for not explaining what i mean by convective energy. Why would I use the 850 vorticity map to show 'convective energy"? Convective energy in the way I am using it refers to the area most likely to see storm development and instability. The area I decided to use is in the warm sector and along the cold front, which is depicted on the 850 vorticity maps I posted. The first reference is to the "convective energy" moving from AL to Cape Hatteras, and the other reference (shown using the 12z NAM) is of the "convective energy" moving from AL to NJ. Both of these references based on the 850 vorticity map is occurring along the cold front and in the warm sector. I used the 850 vorticity because it helps depict the area where storm development is likely to occur given a sufficient warm sector (or potential instability) and a sufficient cold front (lift)...thus I termed the 850mb vorticity as "convective energy." Link to comment Share on other sites More sharing options...
yoda Posted March 2, 2012 Share Posted March 2, 2012 First "catch" of the day is here... here we go BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE HUNTSVILLE AL 918 AM CST FRI MAR 2 2012 THE NATIONAL WEATHER SERVICE IN HUNTSVILLE HAS ISSUED A * TORNADO WARNING FOR... EAST CENTRAL LIMESTONE COUNTY IN NORTH CENTRAL ALABAMA... NORTHERN MADISON COUNTY IN NORTH CENTRAL ALABAMA... * UNTIL 945 AM CST * AT 918 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR FRENCH MILL...OR ABOUT NEAR ATHENS...MOVING EAST AT 45 MPH. * LOCATIONS NEAR THE PATH OF THIS TORNADO INCLUDE... CAPSHAW. HARVEST. MERIDIANVILLE. HAZEL GREEN. Link to comment Share on other sites More sharing options...
Calderon Posted March 2, 2012 Share Posted March 2, 2012 Tornado on the ground, heading for Harvest and Anderon Hills crossing into Madison County. Link to comment Share on other sites More sharing options...
dan11295 Posted March 2, 2012 Share Posted March 2, 2012 TOR watch box just issued for E TN and far N. AL & GA including the currently warned cell. TORNADO WATCH OUTLINE UPDATE FOR WT 56 NWS STORM PREDICTION CENTER NORMAN OK 930 AM CST FRI MAR 2 2012 TORNADO WATCH 56 IS IN EFFECT UNTIL 300 PM CST FOR THE FOLLOWING LOCATIONS TNC001-003-007-011-013-015-027-031-035-041-049-051-061-065-087- 103-105-107-115-121-127-129-133-137-141-143-145-151-153-159-175- 177-185-022100- /O.NEW.KWNS.TO.A.0056.120302T1530Z-120302T2100Z/ TN . TENNESSEE COUNTIES INCLUDED ARE ANDERSON BEDFORD BLEDSOE BRADLEY CAMPBELL CANNON CLAY COFFEE CUMBERLAND DE KALB FENTRESS FRANKLIN GRUNDY HAMILTON JACKSON LINCOLN LOUDON MARION MCMINN MEIGS MOORE MORGAN OVERTON PICKETT PUTNAM RHEA ROANE SCOTT SEQUATCHIE SMITH VAN BUREN WARREN WHITE $$ AL . ALABAMA COUNTIES INCLUDED ARE DEKALB JACKSON LAWRENCE LIMESTONE MADISON MARSHALL MORGAN GA . GEORGIA COUNTIES INCLUDED ARE CATOOSA CHATTOOGA DADE WALKER WHITFIELD Link to comment Share on other sites More sharing options...
SmokeEater Posted March 2, 2012 Share Posted March 2, 2012 Homes already damaged with that TOG. Link to comment Share on other sites More sharing options...
yoda Posted March 2, 2012 Share Posted March 2, 2012 Homes already damaged with that TOG. ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 945 AM CST FOR NORTHERN MADISON AND EAST CENTRAL LIMESTONE COUNTIES... AT 925 AM CST...LOCAL LAW ENFORCEMENT REPORTED A TORNADO. THIS TORNADO WAS LOCATED ABOUT 5 MILES SOUTHWEST OF HARVEST...OR ABOUT 9 MILES NORTH OF MADISON...MOVING EAST NORTHEAST AT 45 MPH. AT 925 AM...EMERGENCY MANAGEMENT OF LIMESTONE COUNTY REPORTED TORNADO DAMAGE TO HOUSES BETWEEN ATHENS AND EASTERN LIMESTONE COUNTY HIGH SCHOOL. Link to comment Share on other sites More sharing options...
Calderon Posted March 2, 2012 Share Posted March 2, 2012 damage to homes near East Limestone High School, east of Athens near French Mill. Apparently to a subdivision hit hard on 4/27. Link to comment Share on other sites More sharing options...
yoda Posted March 2, 2012 Share Posted March 2, 2012 According to news stations here, they have been told a PDS watch will be issued shortly. Link to comment Share on other sites More sharing options...
dan11295 Posted March 2, 2012 Share Posted March 2, 2012 Seeing some good rotation on that TOR warned call SW of Cookeville, TN, not quite as strong as the AL cell atm. EDIT: that trailing cell in AL just crossing I-65 looks nasty. Link to comment Share on other sites More sharing options...
SmokeEater Posted March 2, 2012 Share Posted March 2, 2012 Can a mod merge the 3 threads so we can get everybody all into one thread? Link to comment Share on other sites More sharing options...
Calderon Posted March 2, 2012 Share Posted March 2, 2012 TOR still on the ground, near Hazel Green High School in northern Madison County. Link to comment Share on other sites More sharing options...
SmokeEater Posted March 2, 2012 Share Posted March 2, 2012 Strong couplet. Link to comment Share on other sites More sharing options...
Calderon Posted March 2, 2012 Share Posted March 2, 2012 Another tornado down near HWY 72 & French Mill Road, heading NE. Link to comment Share on other sites More sharing options...
yoda Posted March 2, 2012 Share Posted March 2, 2012 Another tornado down near HWY 72 & French Mill Road, heading NE. Alabama A&M University potentially in the path of that tornado Link to comment Share on other sites More sharing options...
yoda Posted March 2, 2012 Share Posted March 2, 2012 URGENT - IMMEDIATE BROADCAST REQUESTED TORNADO WATCH NUMBER 57 NWS STORM PREDICTION CENTER NORMAN OK 955 AM CST FRI MAR 2 2012 THE NWS STORM PREDICTION CENTER HAS ISSUED A TORNADO WATCH FOR PORTIONS OF CENTRAL AND SOUTHERN ILLINOIS CENTRAL AND SOUTHERN INDIANA WESTERN KENTUCKY SOUTHEAST MISSOURI EFFECTIVE THIS FRIDAY MORNING AND EVENING FROM 955 AM UNTIL 600 PM CST. ..THIS IS A PARTICULARLY DANGEROUS SITUATION DESTRUCTIVE TORNADOES...LARGE 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 90 STATUTE MILES EAST AND WEST OF A LINE FROM 50 MILES SOUTH OF CAPE GIRARDEAU MISSOURI TO 25 MILES NORTH OF DANVILLE ILLINOIS. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU7). 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 55...WW 56... DISCUSSION...A VOLATILE ENVIRONMENT IS DEVELOPING TODAY ACROSS NWD-EXPANDING WARM SECTOR...FEATURING MLCAPE VALUES OF 1000-2500 J/KG...DEEP-LAYER SHEAR OF 50-60 KT AND EFFECTIVE SRH OF 300-600 M2/S2. TSTMS DEVELOPING ALONG AND AHEAD OF COLD FRONT OVER SERN MO/W-CNTRL IL ARE EXPECTED TO EVOLVE INTO INTENSE SUPERCELLS CAPABLE OF LONG-TRACKED...SIGNIFICANT TORNADOES. LARGE HAIL AND DAMAGING WINDS ARE ALSO LIKELY. Link to comment Share on other sites More sharing options...
Calderon Posted March 2, 2012 Share Posted March 2, 2012 rain-wrapped tornado heading towards Meridianville and Madison County Executive Airport. Link to comment Share on other sites More sharing options...
Disc Posted March 2, 2012 Share Posted March 2, 2012 Reports of houses destroyed near New Market in Madison County Alabama from WAFF. http://www.waff.com/category/105412/live-stream-examples Link to comment Share on other sites More sharing options...
SmokeEater Posted March 2, 2012 Share Posted March 2, 2012 1st couplet has a 122 kt couplet at 1500 feet AGL. Link to comment Share on other sites More sharing options...
Calderon Posted March 2, 2012 Share Posted March 2, 2012 large tornado on the ground moving into Jackson County. This will pass extremely close to Hytop site. Link to comment Share on other sites More sharing options...
yoda Posted March 2, 2012 Share Posted March 2, 2012 large tornado on the ground moving into Jackson County. This will pass extremely close to Hytop site. SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE HUNTSVILLE AL 1002 AM CST FRI MAR 2 2012 ALC071-089-TNC051-103-021615- /O.CON.KHUN.TO.W.0006.000000T0000Z-120302T1615Z/ JACKSON AL-MADISON AL-FRANKLIN TN-LINCOLN TN- 1002 AM CST FRI MAR 2 2012 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1015 AM CST FOR SOUTHEASTERN LINCOLN...SOUTHWESTERN FRANKLIN...NORTHEASTERN MADISON AND NORTHWESTERN JACKSON COUNTIES... AT 1002 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR AND STORM SPOTTERS WERE TRACKING A LARGE AND DANGEROUS TORNADO. THIS TORNADO WAS LOCATED NEAR PLEVNA...OR ABOUT 11 MILES NORTHEAST OF MOORES MILL...MOVING EAST AT 45 MPH. OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO LARKIN...FRANCISCO...HUNTLAND...BEANS CREEK...ESTILLFORK...MAXWELL AND HYTOP. Link to comment Share on other sites More sharing options...
beneficii Posted March 2, 2012 Author Share Posted March 2, 2012 MEG: STRONG SOUTHERLY FLOW IN THE BOUNDARY LAYER HAS HELPED TO MIX OUT SOME CLOUDS ACROSS THE MIDSOUTH THIS MORNING. WINDS WILL CONTINUE TO INCREASE THIS MORNING AHEAD OF THE FRONT WITH SOME GUSTS APPROACHING 50 MPH...AS IS CURRENTLY THE CASE OVER CENTRAL ARKANSAS. AS THE FRONT APPROACHES LATER THIS MORNING...THE CAP CURRENTLY IN PLACE WILL EASE ALLOWING FOR CONVECTIVE INITIATION JUST AHEAD OF THE FRONT...MOST LIKELY A ROW OR TWO COUNTIES EAST OF THE MISSISSIPPI RIVER. COVERAGE OF THESE STORMS IS STILL HIGHLY UNCERTAIN. QUITE FRANKLY...IT MAY BE ONE OR TWO DISCRETE SUPERCELLS OR A BROKEN SQUALL LINE. WHILE STILL ELEVATED...STORMS HAVE BEGUN TO FIRE TO THE NORTH OVER SOUTH CENTRAL AND SOUTHEAST MISSOURI WITH TOWERING CU NOW EVIDENT OVER NORTH CENTRAL ARKANSAS. WINDS HAVE VEERED SOUTHWEST AND WILL PROBABLY CONTINUE VEERING THROUGH THE DAY. VERY IMPRESSIVE WIND FIELDS EXIST...DESPITE THE UNIDIRECTIONAL FLOW. MODEL FORECAST SOUNDINGS SHOW STRONG INSTABILITY FOR THIS TIME OF YEAR...BUT ALSO SHOW RATHER HIGH LCL/S GIVEN THE MIXING AND RECORD WARM TEMPERATURES. THUS...STILL THINKING THE BEST CHANCE FOR STRONG/LONG-TRACKED TORNADOES WILL BE JUST TO THE NORTH AND EAST BUT THAT IS NOT TO SAY THEY STILL ARE NOT POSSIBLE...ESPECIALLY NEAR THE TENNESSEE RIVER. THE MAIN THREATS WILL CONTINUE TO BE DAMAGING WINDS AND VERY LARGE HAIL DUE TO STEEP MID LEVEL LAPSE RATES IN VERY DRY AIR WITH THE MID LEVEL DRY SLOT. STORMS WILL BE MOVING VERY QUICKLY...THUS IT IS IMPORTANT TO MONITOR THE WEATHER CONDITIONS CLOSELY THROUGHOUT THE DAY. Link to comment Share on other sites More sharing options...
dan11295 Posted March 2, 2012 Share Posted March 2, 2012 Got a big dbz spike in the TOR north of Huntsville. not a debris ball I hope.... Link to comment Share on other sites More sharing options...
Calderon Posted March 2, 2012 Share Posted March 2, 2012 AT 1005 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR AND STORM SPOTTERS WERE TRACKING A LARGE AND EXTREMELY DANGEROUS TORNADO. THIS TORNADO WAS LOCATED NEAR MERIDIANVILLE...MOVING EAST AT 55 MPH. THIS IS A TORNADO EMGERGENCY FOR NORTHERN MADISON COUNTY AND THE MERIDIANVILLE AREA. TAKE SHELTER IMMEDIATELY! Link to comment Share on other sites More sharing options...
L.B. LaForce Posted March 2, 2012 Share Posted March 2, 2012 Hmmm, this can't be good... Link to comment Share on other sites More sharing options...
yoda Posted March 2, 2012 Share Posted March 2, 2012 James Spann (RT Madison County EMA): Several houses leveled near Walker Lane per the Sheriff's Department Link to comment Share on other sites More sharing options...
yoda Posted March 2, 2012 Share Posted March 2, 2012 BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE HUNTSVILLE AL 1010 AM CST FRI MAR 2 2012 THE NATIONAL WEATHER SERVICE IN HUNTSVILLE HAS ISSUED A * TORNADO WARNING FOR... SOUTHERN FRANKLIN COUNTY IN TENNESSEE... NORTHWESTERN JACKSON COUNTY IN NORTHEAST ALABAMA... * UNTIL 1045 AM CST * AT 1010 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A TORNADO NEAR FRANCISCO...OR ABOUT 16 MILES SOUTHWEST OF WINCHESTER...MOVING NORTHEAST AT 55 MPH. THIS STORM HAS A HISTORY OF PRODUCING DAMAGE...TAKE SHELTER IMMEDIATELY IF IN THE PATH OF THIS STORM. * LOCATIONS NEAR THE PATH OF THIS TORNADO INCLUDE... JERICHO. COWAN. SHERWOOD. ST. ANDREWS. Link to comment Share on other sites More sharing options...
Indystorm Posted March 2, 2012 Share Posted March 2, 2012 95/80 probs for tors in the PDS watch box as well. This is going to be a very active day. Link to comment Share on other sites More sharing options...
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