Jrad08 Posted March 1, 2017 Share Posted March 1, 2017 21 minutes ago, yoda said: Looks like the night for warnings from KPAH is getting underway Possible debris from this cell showing up... Link to comment Share on other sites More sharing options...
Hoosier Posted March 1, 2017 Share Posted March 1, 2017 This is close to where that couplet was earlier PRELIMINARY LOCAL STORM REPORT NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL 804 PM CST TUE FEB 28 2017 ..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON... ..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE.... ..REMARKS.. 0636 PM TSTM WND GST 2 W EAST CHICAGO 41.65N 87.49W 02/28/2017 M95 MPH LAKE IN MESONET Link to comment Share on other sites More sharing options...
MattPetrulli Posted March 1, 2017 Share Posted March 1, 2017 Massive BWER on that Rockwood cell. Link to comment Share on other sites More sharing options...
janetjanet998 Posted March 1, 2017 Share Posted March 1, 2017 MESOSCALE DISCUSSION 0225 NWS STORM PREDICTION CENTER NORMAN OK 0806 PM CST TUE FEB 28 2017 AREAS AFFECTED...PORTIONS OF CENTRAL AND NORTHERN ILLINOIS CONCERNING...TORNADO WATCH 42... VALID 010206Z - 010330Z THE SEVERE WEATHER THREAT FOR TORNADO WATCH 42 CONTINUES. SUMMARY...THE SEVERE THREAT IS SHIFTING BACK TO WESTERN PORTIONS OF TORNADO WATCH 42. AN ONGOING THREAT FOR DAMAGING WINDS, LARGE HAIL, AND A FEW TORNADOES IS EXPECTED. IN TURN, NEW WATCH ISSUANCE WILL LIKELY BE REQUIRED PRIOR TO THE 04Z EXPIRATION OF WATCH 42. DISCUSSION...A SECOND ROUND OF CONVECTION IS ORGANIZING ACROSS NORTHERN MISSOURI, FAR SOUTHEASTERN IOWA, AND WESTERN ILLINOIS IN RESPONSE TO LARGE-SCALE FORCING FOR ASCENT WITH THE APPROACHING TROUGH. STEEPENING MID-LEVEL LAPSE RATES (OBSERVED UPSTREAM IN THE 00Z TOP AND SGF SOUNDINGS) AND LOW-LEVEL CONVERGENCE ALONG THE SURFACE FRONT WILL PROMOTE FURTHER BLOSSOMING OF CONVECTION THIS EVENING. WHILE CELLS MAY INITIALLY STRUGGLE DUE TO MODEST LOW-LEVEL MOISTURE (E.G., LOW 50S DEW POINTS IN WESTERN ILLINOIS), A CORRIDOR OF HIGHER DEW POINTS TO THE EAST WILL LIKELY YIELD AROUND 1000 J/KG OF MLCAPE LATE THIS EVENING. WHILE SOME PERSISTING CONVECTIVE INHIBITION MAY PARTIALLY TEMPER A GREATER SEVERE THREAT, EFFECTIVE STORM-RELATIVE HELICITY ON THE ORDER OF 300-400 M2/S2 WILL BE FAVORABLE FOR LOW-LEVEL MESOCYCLOGENESIS. UNI-DIRECTIONAL SOUTHWESTERLY FLOW ABOVE 850-MB SUGGESTS STORMS WILL EVOLVE INTO SMALL BOWING SEGMENTS, WITH PERHAPS EMBEDDED SUPERCELL STRUCTURES. THEREFORE, A RENEWED THREAT FOR DAMAGING WINDS, A FEW TORNADOES, AND LARGE HAIL WILL LIKELY EVOLVE ACROSS THE REGION LATE THIS EVENING INTO THE OVERNIGHT. NEW WATCH ISSUANCE IS ANTICIPATED PRIOR TO THE 04Z EXPIRATION OF WATCH 42. Link to comment Share on other sites More sharing options...
geddyweather Posted March 1, 2017 Share Posted March 1, 2017 SPC looking to re-issue the IL tornado watch before the old one expires at 04z. That whole area is not done yet... Link to comment Share on other sites More sharing options...
SmokeEater Posted March 1, 2017 Share Posted March 1, 2017 108 kts Delta V on it. Link to comment Share on other sites More sharing options...
SouthernNJ Posted March 1, 2017 Share Posted March 1, 2017 This supercell has been enormous for almost 3 hours, back when it was in the Springfield CWA. Only hail reports until the recent tornado, but now it is moving into the 15 percent hatched-contour area. Could be multiple strong tornadoes from it before too long. Link to comment Share on other sites More sharing options...
yoda Posted March 1, 2017 Share Posted March 1, 2017 TOG in Perryville in SW IL Link to comment Share on other sites More sharing options...
NorthArlington101 Posted March 1, 2017 Share Posted March 1, 2017 Looks like two circulations, one over Rockwood. Link to comment Share on other sites More sharing options...
andyhb Posted March 1, 2017 Author Share Posted March 1, 2017 Debris over 25k ft with this thing. Link to comment Share on other sites More sharing options...
SmokeEater Posted March 1, 2017 Share Posted March 1, 2017 Houses completely gone on the north side of Perryville per chasers in the area. Link to comment Share on other sites More sharing options...
geddyweather Posted March 1, 2017 Share Posted March 1, 2017 Lordy... Link to comment Share on other sites More sharing options...
jojo762 Posted March 1, 2017 Share Posted March 1, 2017 Report of overturned vehicles on I55... Link to comment Share on other sites More sharing options...
bdgwx Posted March 1, 2017 Share Posted March 1, 2017 St. Louis meteorologist and storm chaser Chris Higgins has a live feed from I-55 near Perryville on his FB page. There are reports of injuries and cars blown off the road. https://www.facebook.com/ChrisHigginsFOX2 Link to comment Share on other sites More sharing options...
janetjanet998 Posted March 1, 2017 Share Posted March 1, 2017 ULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE PADUCAH KY 821 PM CST TUE FEB 28 2017 THE NATIONAL WEATHER SERVICE IN PADUCAH HAS ISSUED A * TORNADO WARNING FOR... SOUTH CENTRAL PERRY COUNTY IN SOUTH CENTRAL ILLINOIS... NORTHERN JACKSON COUNTY IN SOUTHERN ILLINOIS... * UNTIL 900 PM CST * AT 820 PM CST, A CONFIRMED LARGE AND EXTREMELY DANGEROUS TORNADO WAS LOCATED NEAR ROCKWOOD, OR 10 MILES SOUTHEAST OF CHESTER, MOVING EAST AT 45 MPH. Link to comment Share on other sites More sharing options...
Disc Posted March 1, 2017 Share Posted March 1, 2017 Link to comment Share on other sites More sharing options...
jojo762 Posted March 1, 2017 Share Posted March 1, 2017 Oh dear... Right over Rockwood... Link to comment Share on other sites More sharing options...
yoda Posted March 1, 2017 Share Posted March 1, 2017 Never good when you see reports of cars being flipped/tossed on an interstate... Link to comment Share on other sites More sharing options...
Calderon Posted March 1, 2017 Share Posted March 1, 2017 Ava is in extreme danger and then it's mostly rural land until Du Quoin. Upside, at least this is going to pass north of Carbondale. Link to comment Share on other sites More sharing options...
jojo762 Posted March 1, 2017 Share Posted March 1, 2017 Looks like the small town of Ava is under the gun next... pop 662. Link to comment Share on other sites More sharing options...
janetjanet998 Posted March 1, 2017 Share Posted March 1, 2017 1 minute ago, jojo762 said: Oh dear... Right over Rockwood... not much there a post office and a few homes Link to comment Share on other sites More sharing options...
Calderon Posted March 1, 2017 Share Posted March 1, 2017 2 minutes ago, jojo762 said: Oh dear... Right over Rockwood... If there is a good thing, it only has a population of 42 in 2010 and is comprised of a church, post office, and a dozen homes, so it very well could've avoided the whole community. Link to comment Share on other sites More sharing options...
Disc Posted March 1, 2017 Share Posted March 1, 2017 Ugh. Not good. Link to comment Share on other sites More sharing options...
jojo762 Posted March 1, 2017 Share Posted March 1, 2017 Just now, Disc said: Ugh. Not good. I hope that a chaser is not actually where that green dot is.... Link to comment Share on other sites More sharing options...
MattPetrulli Posted March 1, 2017 Share Posted March 1, 2017 Hearing reports of a house slabbed in Perryville. Unconfirmed but someone tweeted they were finding bodies S of Perryville Link to comment Share on other sites More sharing options...
bdgwx Posted March 1, 2017 Share Posted March 1, 2017 I'm seeing reports (not yet confirmed) of at least 1 fatality in Perryville. Link to comment Share on other sites More sharing options...
jojo762 Posted March 1, 2017 Share Posted March 1, 2017 CC appeared to drop after it hit Ava... Link to comment Share on other sites More sharing options...
Disc Posted March 1, 2017 Share Posted March 1, 2017 1 minute ago, jojo762 said: I hope that a chaser is not actually where that green dot is.... Their location updated to that same spot a minute after that scan. Link to comment Share on other sites More sharing options...
Jackstraw Posted March 1, 2017 Share Posted March 1, 2017 Storm just east of Flora has been producing some fairly strong couplets Link to comment Share on other sites More sharing options...
yoda Posted March 1, 2017 Share Posted March 1, 2017 URGENT - IMMEDIATE BROADCAST REQUESTED Tornado Watch Number 46 NWS Storm Prediction Center Norman OK 825 PM CST Tue Feb 28 2017 The NWS Storm Prediction Center has issued a * Tornado Watch for portions of Northeastern Arkansas Southern Illinois Central and southern Indiana Central and western Kentucky Southeastern Missouri Western Tennessee * Effective this Tuesday night and Wednesday morning from 825 PM until 400 AM CST. * Primary threats include... A few tornadoes likely with a couple intense tornadoes possible Isolated very large hail events to 2.5 inches in diameter possible Isolated damaging wind gusts to 70 mph possible SUMMARY...Widely spaced yet potentially tornadic supercells are expected to move east-northeastward into and across parts of this watch, offering the threats for tornadoes (some significant: capable of at least EF2 damage), large hail and severe gusts. Some increase in storm coverage is likely through the overnight hours. See SPC mesoscale discussion 224 for initial meteorological insights. Link to comment Share on other sites More sharing options...
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