andyhb Posted June 30, 2014 Share Posted June 30, 2014 Sig tor potential with the supercell in N MO, very strong rotation. Link to comment Share on other sites More sharing options...
geddyweather Posted June 30, 2014 Share Posted June 30, 2014 Finally a new Svr Warning in IL, this time for the giant rain maker that appears to be bowing slightly. As for N. MO, I wondered if we were going to see some discrete supercells down that direction. Instability is through the roof down there EDIT: New Tornado Watch for Northern MO Link to comment Share on other sites More sharing options...
Chitown Storm Posted June 30, 2014 Share Posted June 30, 2014 What's the staying power of the 2nd line moving thru the Des Moines area? Link to comment Share on other sites More sharing options...
Central Illinois Posted June 30, 2014 Share Posted June 30, 2014 Sig tor potential with the supercell in N MO, very strong rotation. Just NW of bethany MO Link to comment Share on other sites More sharing options...
andyhb Posted June 30, 2014 Share Posted June 30, 2014 Multiple homes reported damaged/destroyed in Traer, IA via FD, that area had a strong couplet go right over earlier. Link to comment Share on other sites More sharing options...
geddyweather Posted June 30, 2014 Share Posted June 30, 2014 URGENT - IMMEDIATE BROADCAST REQUESTED TORNADO WATCH NUMBER 376 NWS STORM PREDICTION CENTER NORMAN OK 530 PM CDT MON JUN 30 2014 THE NWS STORM PREDICTION CENTER HAS ISSUED A * TORNADO WATCH FOR PORTIONS OF WESTERN ILLINOIS NORTHEASTERN KANSAS NORTHERN MISSOURI * EFFECTIVE THIS MONDAY AFTERNOON AND TUESDAY MORNING FROM 530 PM UNTIL 100 AM CDT. * PRIMARY THREATS INCLUDE... A COUPLE INTENSE TORNADOES POSSIBLE SCATTERED LARGE HAIL AND ISOLATED VERY LARGE HAIL EVENTS TO 2 INCHES IN DIAMETER POSSIBLE SCATTERED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 125 STATUTE MILES EAST AND WEST OF A LINE FROM 40 MILES NORTHWEST OF KIRKSVILLE MISSOURI TO 80 MILES SOUTHEAST OF CHILLICOTHE MISSOURI. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU6). DISCUSSION...STORMS INCLUDING A FEW SUPERCELLS ARE EXPECTED TO DEVELOP ALONG AND SOUTH OF A SEWD MOVING COLD FRONT. STORMS OVER EXTREME NRN MO MAY INTERACT WITH A PRE-EXISTING OUTFLOW BOUNDARY WHICH COULD ENHANCE THE TORNADO THREAT. OTHERWISE...STRONG INSTABILITY AND 40 KT DEEP LAYER SHEAR WILL SUPPORT SUPERCELLS...BUT WITH TIME STORMS MAY TEND TO EVOLVE INTO CLUSTERS LATER THIS EVENING. LARGE HAIL...DAMAGING WIND AND ISOLATED TORNADOES ARE POSSIBLE. 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 26035. All 40/30 Probs except Winds, whcih are 40/20 Link to comment Share on other sites More sharing options...
kevlon62 Posted June 30, 2014 Share Posted June 30, 2014 Back in town after a jaunt west earlier. Just saw a nice CG south of town. Definitely muggy. No shelf cloud yet. Link to comment Share on other sites More sharing options...
Gilbertfly Posted June 30, 2014 Share Posted June 30, 2014 LOT update.... AREA FORECAST DISCUSSIONNATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL525 PM CDT MON JUN 30 2014.MESOSCALE DISCUSSION...521 PMTHE CURRENT FOCUS IS WITH THE AREA OF STRONG CONVECTION JUST WEST OFBUREAU COUNTY. THE LATEST RADAR IMAGERY INDICATES A REAR INFLOW JETTRYING TO DEVELOP...WHICH COULD FAVOR THIS STORM TO TRANSITION INTOANOTHER FORWARD PROPAGATING BOWING SEGMENT WITHIN THE HALF HOUR. IFTHIS DOES OCCUR...THIS BOWING SEGMENT WOULD LIKELY SHIFT EAST-NORTHEASTWARD ACROSS THE I-80 TO I-88 CORRIDORS OVER THE NEXTCOUPLE HOURS...POSSIBLY IMPACTING THE CHICAGO AREA AROUND 7 PM. WEWILL BE MONITORING THIS CLOSELY.THE OTHER CONCERN IS FOR FLASH FLOODING ACROSS THE AREA. CONVECTIVEACTIVITY IS BEGINNING TO LINE UP WEST TO EAST ACROSS WESTERNILLINOIS...AND OBJECTIVE SURFACE ANALYSIS SUGGESTS THAT THIS AREAIS ALONG THE GRADIENT OF A STRONGLY UNSTABLE ATMOSPHERE...WITHAROUND 5000 J/KG MLCAPE AND 2 INCH PWATS...AS INDICATED FROMLATEST RAP MESOANALYSIS. WITH STRONG LOW LEVEL MOISTURE CONTINUINGTO STREAM INTO THIS AREA VIA STOUT SOUTHERLY WINDS...CONTINUEDREGENERATION OF STORMS IS LIKELY ACROSS WESTERN ILLINOIS...ANDTHESE STORMS WILL MOVE EAST...SETTING UP TRAINING STORMS. THISACTIVITY INCREASES THE THREAT OF FLASH FLOODING ACROSS NORTHERNILLINOIS...AND AS SUCH...WE HAVE EXPANDED THE FLASH FLOOD MUCH FORMUCH OF THE AREA THROUGH TONIGHT. Link to comment Share on other sites More sharing options...
CHI_Weather Posted June 30, 2014 Share Posted June 30, 2014 That cell by Princeton is heading towards Chicago. Damaging winds are a threat. Link to comment Share on other sites More sharing options...
A-L-E-K Posted June 30, 2014 Share Posted June 30, 2014 junk cells going up ahead of the main line in NE IL Link to comment Share on other sites More sharing options...
Hoosier Posted June 30, 2014 Share Posted June 30, 2014 Nice update from LOT. Not really seeing a northward component to the motion of the Bureau county storms at this point but it poses a damaging wind threat near I-80 in the short term. Link to comment Share on other sites More sharing options...
SchaumburgStormer Posted June 30, 2014 Share Posted June 30, 2014 Rather disappointed considering what the models were showing yesterday. Last nights storm was much more impressive in Rockford Link to comment Share on other sites More sharing options...
Gilbertfly Posted June 30, 2014 Share Posted June 30, 2014 junk cells going up ahead of the main line in NE IL Cell to my immediate north looks pretty solid visually....can see rapid towering...we'll see how she does Link to comment Share on other sites More sharing options...
geddyweather Posted June 30, 2014 Share Posted June 30, 2014 Ridgeway, MO getting edged by a possible tornado, tight velocity signature showing up on radar. Link to comment Share on other sites More sharing options...
Hoosier Posted June 30, 2014 Share Posted June 30, 2014 Don't think this was posted yet. EF-1 tornado in Dane county Wisconsin last night. http://www.crh.noaa.gov/news/display_cmsstory.php?wfo=mkx&storyid=103140&source=0 Link to comment Share on other sites More sharing options...
TimChgo9 Posted June 30, 2014 Share Posted June 30, 2014 Cells popping over DuPage County right now. Good one going at this time, heading NE. Looks like some strengthening of the line, at the moment, per radar..... Link to comment Share on other sites More sharing options...
Central Illinois Posted June 30, 2014 Share Posted June 30, 2014 starting to get reports of funnels from the MO cell PRELIMINARY LOCAL STORM REPORTNATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO546 PM CDT MON JUN 30 2014..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON.....DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE......REMARKS..0502 PM FUNNEL CLOUD 1 NE PARNELL 40.45N 94.61W06/30/2014 NODAWAY MO LAW ENFORCEMENTSEVERAL REPORTS OF FUNNEL CLOUDS. POWER LINES REPORTEDDOWN AS WELL.&&$APIETRYC Link to comment Share on other sites More sharing options...
andyhb Posted June 30, 2014 Share Posted June 30, 2014 starting to get reports of funnels from the MO cell The environment there is certainly conducive to significant tornado potential with extreme instability, low LCL heights and adequate low level shear. Link to comment Share on other sites More sharing options...
Chitown Storm Posted June 30, 2014 Share Posted June 30, 2014 Cell in DuPage Co went up right over me. Amazing vertical growth on that thing. Could see it building by the second. Looks like a few more towers trying to form to my SSE. Link to comment Share on other sites More sharing options...
Hoosier Posted June 30, 2014 Share Posted June 30, 2014 Looks like a bit of rotation off and on, now near I-80 in eastern Bureau county Illinois. Link to comment Share on other sites More sharing options...
tornadotony Posted June 30, 2014 Share Posted June 30, 2014 Line is reintensifying as it enters the LOT CWA. Link to comment Share on other sites More sharing options...
Chitown Storm Posted June 30, 2014 Share Posted June 30, 2014 Just got my first nice gust of cooler air as the line approaches. Seems to be strengthening a bit. I-80 looks interesting. Something to watch. Link to comment Share on other sites More sharing options...
andyhb Posted June 30, 2014 Share Posted June 30, 2014 New MCS developing in Central IA. Link to comment Share on other sites More sharing options...
geddyweather Posted June 30, 2014 Share Posted June 30, 2014 Couplet still maintaining on the cell headed toward Princeton MO Link to comment Share on other sites More sharing options...
kevlon62 Posted June 30, 2014 Share Posted June 30, 2014 Non-severe gusts and a few sheets of rain but at least it looked good coming up the hill. East of Woodstock. Link to comment Share on other sites More sharing options...
snowlover2 Posted June 30, 2014 Share Posted June 30, 2014 MESOSCALE DISCUSSION 1222NWS STORM PREDICTION CENTER NORMAN OK 0608 PM CDT MON JUN 30 2014 AREAS AFFECTED...PORTIONS OF CNTRL IL CONCERNING...TORNADO WATCH 374... VALID 302308Z - 010015Z THE SEVERE WEATHER THREAT FOR TORNADO WATCH 374 CONTINUES. SUMMARY...A SVR-TSTM RISK IS EVOLVING ACROSS CNTRL IL. WITH TORNADO WATCH 374 CURRENTLY SET TO EXPIRE AT 0000Z...IT IS POSSIBLE THAT THE WW MAY NEED TO BE LOCALLY EXTENDED IN TIME OR AREA. DISCUSSION...ONGOING INTENSE CONVECTIVE CLUSTERS OVER THE SRN FLANK OF A MATURE MCS WHOSE PRIMARY BOWING SEGMENT APEX IS SURGING THROUGH SRN WI...CONTINUE EVOLVING IN CNTRL IL. A FEED OF RICH LOW-LEVEL MOISTURE FROM THE S ASSOCIATED WITH MIDDLE 70S DEWPOINTS WILL CONTINUE TO SUSTAIN THIS ACTIVITY AMIDST AROUND 35 KT OF 0-6-KM BULK SHEAR PER ILX VWP. WITH POTENTIAL SWD CONVECTIVE PROPAGATION INTO AN EXTREMELY UNSTABLE AIR MASS IN CNTRL IL...AND WITH THE SVR RISK POSSIBLY LINGERING IN PARTS OF TORNADO WATCH 374 AFTER 0000Z...LOCAL AREAL/TEMPORAL EXTENSIONS OF THE WATCH MAY BE NECESSARY. IN ADDITION TO DMGG WINDS AND SVR HAIL...THE RISK FOR A TORNADO MAY PERSIST WITH AROUND 200 M2/S2 OF 0-1-KM SRH. ..COHEN.. 06/30/2014 Link to comment Share on other sites More sharing options...
Chitown Storm Posted June 30, 2014 Share Posted June 30, 2014 Looks like the whole area between the two MCSs could fill in. Link to comment Share on other sites More sharing options...
Powerball Posted June 30, 2014 Share Posted June 30, 2014 Clearly last night's storms worked over the atmosphere good, and it's showing as that squall line remains slightly elevated in spite of the extreme dynamics and instability. Link to comment Share on other sites More sharing options...
Stebo Posted June 30, 2014 Share Posted June 30, 2014 Line is reintensifying as it enters the LOT CWA. Yep interacting with the better instability, now warned for winds to 70. Link to comment Share on other sites More sharing options...
SouthernNJ Posted June 30, 2014 Share Posted June 30, 2014 There has been some decent rotation on the Milwaukee airport radar near the town of Ashippun in WI. Mixed in with the line moving through. Link to comment Share on other sites More sharing options...
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