HurricaneTracker Posted November 22, 2010 Share Posted November 22, 2010 18z DVN sounding Look at that wind shear! Impressive for the end of November! Link to comment Share on other sites More sharing options...
Moneyman Posted November 22, 2010 Share Posted November 22, 2010 Tornado Watch now issued for S. WI. One county south of here I wonder where the warm front is? FDL: 47/46 Dodge (20 mins south): 61/56 Link to comment Share on other sites More sharing options...
Chicago Storm Posted November 22, 2010 Share Posted November 22, 2010 Headed to De Kalb County... Link to comment Share on other sites More sharing options...
csnavywx Posted November 22, 2010 Share Posted November 22, 2010 Headed to De Kalb County... TVS just popped on that cell in Bureau County. Small meso evident on radar (SRM). Moving into an increasingly unstable and higher helicity environment. Link to comment Share on other sites More sharing options...
Indystorm Posted November 22, 2010 Share Posted November 22, 2010 BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL 206 PM CST MON NOV 22 2010 THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHWESTERN LA SALLE COUNTY IN NORTH CENTRAL ILLINOIS... SOUTH CENTRAL LEE COUNTY IN NORTH CENTRAL ILLINOIS... * UNTIL 230 PM CST * AT 200 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING GOLF BALL SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED OVER CENTRAL BUREAU COUNTY...11 MILES WEST OF PRINCETON...AND MOVING RAPIDLY NORTHEAST AT 50 MPH. THIS STORM PRODUCED GOLF BALL SIZED HAIL AT SHEFFIELD ILLINOIS AT 205 PM CST. * LOCATIONS IMPACTED INCLUDE... MENDOTA...SUBLETTE...WEST BROOKLYN AND COMPTON. Link to comment Share on other sites More sharing options...
Kevin Askew Posted November 22, 2010 Share Posted November 22, 2010 BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE QUAD CITIES IA IL 219 PM CST MON NOV 22 2010 THE NATIONAL WEATHER SERVICE IN THE QUAD CITIES HAS ISSUED A * TORNADO WARNING FOR... BUREAU COUNTY IN NORTH CENTRAL ILLINOIS... SOUTHEASTERN HENRY COUNTY IN NORTHWEST ILLINOIS... * UNTIL 245 PM CST. * AT 214 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A TORNADO NEAR KEWANEE MUNICIPAL AIRPORT...OR NEAR KEWANEE...MOVING NORTHEAST AT 55 MPH. Link to comment Share on other sites More sharing options...
Hoosier Posted November 22, 2010 Share Posted November 22, 2010 AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL 225 PM CST MON NOV 22 2010 MESOSCALE DISCUSSION 224 PM CST STRONG TO SEVERE THUNDERSTORMS ACROSS NW IL THIS AFTERNOON ARE EXPECTED TO INTENSIFY FURTHER AS THEY MOVE INTO AN INCREASINGLY UNSTABLE ATMOSPHERE ACROSS NORTHERN IL. LATEST ANALYSIS SHOWS MLCAPE VALUES IN THE 500 TO 1000 J/KG RANGE WITH 0-6 KM SHEAR VALUES OF 50 TO 60 KT. 0-1 KM HELICITY EXCEEDING 300 M2/S2 ALSO WILL SUPPORT A TORNADO THREAT WITH DISCRETE ROTATING STORMS. LARGE HAIL AND DAMAGING WINDS HAVE ALREADY BEEN REPORTED WITH THESE STORMS...AND THESE THREATS ARE EXPECTED TO INCREASE OVER THE NEXT FEW HOURS. AS PER THE LATEST SPC MESOSCALE DISCUSSION...THE WATCH BOX WILL LIKELY NEED TO EXPAND EWD INTO THE CHICAGO AREA. LENNING Link to comment Share on other sites More sharing options...
Cheeznado Posted November 22, 2010 Share Posted November 22, 2010 On a live stream at Tornadovideos.net a chaser has some wicked structure with that warned cell... Link to comment Share on other sites More sharing options...
A-L-E-K Posted November 22, 2010 Share Posted November 22, 2010 AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL 225 PM CST MON NOV 22 2010 MESOSCALE DISCUSSION 224 PM CST STRONG TO SEVERE THUNDERSTORMS ACROSS NW IL THIS AFTERNOON ARE EXPECTED TO INTENSIFY FURTHER AS THEY MOVE INTO AN INCREASINGLY UNSTABLE ATMOSPHERE ACROSS NORTHERN IL. LATEST ANALYSIS SHOWS MLCAPE VALUES IN THE 500 TO 1000 J/KG RANGE WITH 0-6 KM SHEAR VALUES OF 50 TO 60 KT. 0-1 KM HELICITY EXCEEDING 300 M2/S2 ALSO WILL SUPPORT A TORNADO THREAT WITH DISCRETE ROTATING STORMS. LARGE HAIL AND DAMAGING WINDS HAVE ALREADY BEEN REPORTED WITH THESE STORMS...AND THESE THREATS ARE EXPECTED TO INCREASE OVER THE NEXT FEW HOURS. AS PER THE LATEST SPC MESOSCALE DISCUSSION...THE WATCH BOX WILL LIKELY NEED TO EXPAND EWD INTO THE CHICAGO AREA. LENNING I hadn't been paying much attention to weather lately, so this has snuck up on me. Looks like storms will be rolling in as i roll out of the office. Might be forced to sneak into a bar for an hour or so. EDIT: hardly scientific, but it doesn't look very severe stormy out, with heavy overcast and fog. Not sure where this cape came from. Link to comment Share on other sites More sharing options...
Hoosier Posted November 22, 2010 Share Posted November 22, 2010 Tornado Watch has now been extended into Chicago area/northwest IN. Link to comment Share on other sites More sharing options...
csnavywx Posted November 22, 2010 Share Posted November 22, 2010 I hadn't been paying much attention to weather lately, so this has snuck up on me. Looks like storms will be rolling in as i roll out of the office. Might be forced to sneak into a bar for an hour or so. EDIT: hardly scientific, but it doesn't look very severe stormy out, with heavy overcast and fog. Not sure where this cape came from. From your immediate west, where's it's been sunny and 65+ most of the day. Link to comment Share on other sites More sharing options...
A-L-E-K Posted November 22, 2010 Share Posted November 22, 2010 From your immediate west, where's it's been sunny and 65+ most of the day. Thanks for sharing. Link to comment Share on other sites More sharing options...
Hoosier Posted November 22, 2010 Share Posted November 22, 2010 I hadn't been paying much attention to weather lately, so this has snuck up on me. Looks like storms will be rolling in as i roll out of the office. Might be forced to sneak into a bar for an hour or so. EDIT: hardly scientific, but it doesn't look very severe stormy out, with heavy overcast and fog. Not sure where this cape came from. They weren't terrible in the first place, but I think the mid level lapse rates might be a little steeper than progged. Also it's warmer than what the models were indicating with 70 degree temps now inching up toward the far south suburbs. This has become a halfway decent severe setup considering it's getting a bit late in the season for this particular target area. Radar looks pretty good as far as discrete activity right now although I'm not sure how long it will be before we see things become more messy. Link to comment Share on other sites More sharing options...
csnavywx Posted November 22, 2010 Share Posted November 22, 2010 Thanks for sharing. No problem, I like to share the wealth, especially in late Nov. Mean little hook on that cell coming into DeKalb county, and a nasty little couplet on radar. Link to comment Share on other sites More sharing options...
Indystorm Posted November 22, 2010 Share Posted November 22, 2010 No problem, I like to share the wealth, especially in late Nov. Mean little hook on that cell coming into DeKalb county, and a nasty little couplet on radar. I bet met Gil Sebenste of NIU is chasing this or following it very closely. Link to comment Share on other sites More sharing options...
Hoosier Posted November 22, 2010 Share Posted November 22, 2010 Weird to think that it's going to be getting dark in just a couple hours. Link to comment Share on other sites More sharing options...
Indystorm Posted November 22, 2010 Share Posted November 22, 2010 Weird to think that it's going to be getting dark in just a couple hours. Yes, we miss the long 5-10 p.m. evening chase time of late spring and summer. Link to comment Share on other sites More sharing options...
Chicago Storm Posted November 22, 2010 Share Posted November 22, 2010 No problem, I like to share the wealth, especially in late Nov. Mean little hook on that cell coming into DeKalb county, and a nasty little couplet on radar. coming up to it in a bit. Link to comment Share on other sites More sharing options...
Chicago WX Posted November 22, 2010 Share Posted November 22, 2010 I hadn't been paying much attention to weather lately, so this has snuck up on me. Looks like storms will be rolling in as i roll out of the office. Might be forced to sneak into a bar for an hour or so. Good luck with that. Link to comment Share on other sites More sharing options...
A-L-E-K Posted November 22, 2010 Share Posted November 22, 2010 Starting to get a lot of junk going up over the southeastern LOT area, i have to wonder if this will choke off some of the northern action as it heads east. Link to comment Share on other sites More sharing options...
OceanStWx Posted November 22, 2010 Share Posted November 22, 2010 As the storms depart our CWA I am thinking we were limited by the poor inflow winds. Good speed shear, but little directional. The veered SSW winds were parallel to the forcing and just couldn't really tighten up the low levels for us. It would have taken some locally backed winds to spin something up, and probably did in far sern Henry County, IL. My guess would be along the outflow from the previous HP storm that went through the area. Link to comment Share on other sites More sharing options...
Hoosier Posted November 22, 2010 Share Posted November 22, 2010 Odd coincidence...there a TOR east of Rockford for the area that got hit by the EF3 on 1/7/08 BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL 303 PM CST MON NOV 22 2010 THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A * TORNADO WARNING FOR... NORTHERN BOONE COUNTY... NORTHWESTERN MCHENRY COUNTY... EAST CENTRAL WINNEBAGO COUNTY... * UNTIL 330 PM CST Link to comment Share on other sites More sharing options...
SmokeEater Posted November 22, 2010 Share Posted November 22, 2010 BWER? Link to comment Share on other sites More sharing options...
OceanStWx Posted November 22, 2010 Share Posted November 22, 2010 Odd coincidence...there a TOR east of Rockford for the area that got hit by the EF3 on 1/7/08 BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL 303 PM CST MON NOV 22 2010 THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A * TORNADO WARNING FOR... NORTHERN BOONE COUNTY... NORTHWESTERN MCHENRY COUNTY... EAST CENTRAL WINNEBAGO COUNTY... * UNTIL 330 PM CST Nice couplet up there, and that is the right location for tornadoes now, closer to the triple point. Link to comment Share on other sites More sharing options...
SmokeEater Posted November 22, 2010 Share Posted November 22, 2010 Debris in the air reported near Rock Cut State Park. SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL 309 PM CST MON NOV 22 2010 ILC007-111-201-222130- /O.CON.KLOT.TO.W.0032.000000T0000Z-101122T2130Z/ WINNEBAGO IL-MCHENRY IL-BOONE IL- 309 PM CST MON NOV 22 2010 ...A TORNADO WARNING REMAINS IN EFFECT FOR NORTHERN BOONE... NORTHWESTERN MCHENRY AND EAST CENTRAL WINNEBAGO COUNTIES UNTIL 330 PM CST... AT 304 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A CONFIRMED TORNADO. THIS TORNADO WAS LOCATED AT THE INTERSECTION OF ARGYLE AND HARLEM JUST WEST OF CALEDONIA...AND JUST EAST OF ROCK CUT STATE PARK. THIS DANGEROUS STORM WAS MOVING NORTHEAST AT 45 MPH. LOCATIONS IMPACTED INCLUDE... HARVARD...POPLAR GROVE AND CAPRON. Link to comment Share on other sites More sharing options...
Chicago Storm Posted November 22, 2010 Share Posted November 22, 2010 coming up to it in a bit. nice base on it. streaming live on severe studios. Link to comment Share on other sites More sharing options...
Indystorm Posted November 22, 2010 Share Posted November 22, 2010 Getting near the magic hour for tornado occurrence, although I usually have a rule that given other favorable parameters dews should be above 60 for tors with good low level inflow, although there are probably exceptions to this I'm sure. And the latest ground truth just proves the exception! That's why weather is always interesting. Link to comment Share on other sites More sharing options...
Chicago Storm Posted November 22, 2010 Share Posted November 22, 2010 decent rising motion. Link to comment Share on other sites More sharing options...
SmokeEater Posted November 22, 2010 Share Posted November 22, 2010 LOT: 4 E Loves Park [boone Co, IL] broadcast media reports TORNADO at 03:00 PM CST -- estimated 1/2 mile wide tornado spotted on ground at the intersection of argyle rd and harlem rd east of rock cut state park near caledonia. power lines down and debris in the air reported in the area. Link to comment Share on other sites More sharing options...
cromartie Posted November 22, 2010 Share Posted November 22, 2010 ...A TORNADO WARNING REMAINS IN EFFECT FOR SOUTHERN WALWORTH COUNTY UNTIL 345 PM CST... AT 314 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A CONFIRMED TORNADO. THIS TORNADO WAS LOCATED NEAR CAPRON...OR 9 MILES WEST OF HARVARD...MOVING NORTHEAST AT 45 MPH. THIS TORNADO WILL BE NEAR... WALWORTH AROUND 330 PM CST. FONTANA-ON-GENEVA LAKE AND WILLIAMS BAY AROUND 335 PM CST. COMO AROUND 340 PM CST. PELL LAKE...LAKE GENEVA AND GENOA CITY AROUND 345 PM CST. OTHER LOCATIONS IMPACTED BY THIS TORNADO INCLUDE FONTANA. Link to comment Share on other sites More sharing options...
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