Hoosier Posted October 24, 2011 Share Posted October 24, 2011 A major severe weather outbreak struck the Lakes/Ohio Valley 10 years ago SPC outlooks: http://www.convectiveoutlook.com/highrisk/20002003/01102406_spc.htm http://www.convectiveoutlook.com/highrisk/20002003/01102413_spc.htm http://www.convectiveoutlook.com/highrisk/20002003/01102416_spc.htm http://www.convectiveoutlook.com/highrisk/20002003/01102420_spc.htm http://www.convectiveoutlook.com/highrisk/20002003/01102501_spc.htm http://mcc.sws.uiuc.edu/climate_midwest/historical/oct24srvwx/oct2401svrwx.htm The South Bend airport (KSBN) recorded a wind gust of 89 mph as the storms passed through. Other extreme gusts were noted in Michigan and near the Ohio River. SPECI KSBN 242104Z 25049G77KT 3/4SM TSRA BR SQ FEW009 BKN060 OVC110 18/17 A2925 RMK AO2 PK WND 24077/2104 FRQ LTGICCCCA SW-NW TSSW-NW MOV NE P0032 $ Link to comment Share on other sites More sharing options...
on_wx Posted October 24, 2011 Share Posted October 24, 2011 URGENT - IMMEDIATE BROADCAST REQUESTED TORNADO WATCH NUMBER 797 STORM PREDICTION CENTER NORMAN OK 1128 AM CDT WED OCT 24 2001 THE STORM PREDICTION CENTER HAS ISSUED A TORNADO WATCH FOR PORTIONS OF SOUTHERN AND EASTERN ILLINOIS INDIANA NORTHWEST KENTUCKY EAST CENTRAL MISSOURI NORTHWEST OHIO EFFECTIVE THIS WEDNESDAY MORNING AND EVENING FROM 1145 AM UNTIL 700 PM CDT. ...THIS IS A PARTICULARLY DANGEROUS SITUATION... DAMAGING TORNADOES...LARGE HAIL TO 3 INCHES IN DIAMETER... THUNDERSTORM WIND GUSTS TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS. THE TORNADO WATCH AREA IS ALONG AND 135 STATUTE MILES EAST AND WEST OF A LINE FROM 5 MILES SOUTH SOUTHWEST OF CARBONDALE ILLINOIS TO 55 MILES NORTH NORTHWEST OF FORT WAYNE INDIANA. 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. DISCUSSION...STRONG THUNDERSTORMS ARE DEVELOPING ALONG AND AHEAD OF THE COLD FRONT OVER MISSOURI INTO CENTRAL ILLINOIS. CONVECTION IS EXPECTED TO INCREASE THIS AFTERNOON AS VERY STRONG UPPER TROUGH AND JET STREAM SURGE EASTWARD TOWARD THE MID MISSISSIPPI VALLEY. AIR MASS IN THE WARM SECTOR IS DESTABILIZING RAPIDLY AS DEW POINTS INCREASE NWD. LOW LEVEL SHEAR/HELICITY WILL ALSO INCREASE THIS AFTERNOON AS THE 50-60 KT LOW LEVEL JET SPREADS INTO IL/IN AND WRN OH...ENHANCING POTENTIAL FOR TORNADIC SUPERCELLS...PRIMARILY AHEAD OF THE COLD FRONT. A SQUALL LINE WILL ALSO LIKELY DEVELOP ALONG THE FRONT WITH AN ENHANCED THREAT FOR DAMAGING WINDS AS IT MOVES EWD. AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM MOTION VECTOR 23040. ...WEISS URGENT - IMMEDIATE BROADCAST REQUESTED TORNADO WATCH NUMBER 798 STORM PREDICTION CENTER NORMAN OK 119 PM CDT WED OCT 24 2001 THE STORM PREDICTION CENTER HAS ISSUED A TORNADO WATCH FOR PORTIONS OF NORTH CENTRAL AND NORTHEAST ARKANSAS EXTREME SOUTHERN ILLINOIS WESTERN KENTUCKY SOUTHEAST MISSOURI WESTERN TENNESSEE EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 145 PM UNTIL 700 PM CDT. TORNADOES...HAIL TO 3 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS. THE TORNADO WATCH AREA IS ALONG AND 115 STATUTE MILES EAST AND WEST OF A LINE FROM 65 MILES WEST OF MEMPHIS TENNESSEE TO 45 MILES NORTHEAST OF CAPE GIRARDEAU MISSOURI. 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 797... DISCUSSION...THUNDERSTORMS ARE DEVELOPING SWD ALONG THE COLD FRONT MOVING ACROSS SRN MO AND NRN AR. STORMS ARE EXPECTED TO INTENSIFY THIS AFTERNOON IN RESPONSE TO STRONG UPPER TROUGH MOVING EWD ACROSS THE CENTRAL PLAINS. MODERATELY UNSTABLE AIR MASS COUPLED WITH FAVORABLE VERTICAL SHEAR INDICATES POTENTIAL FOR SUPERCELL DEVELOPMENT...ESPECIALLY IF DISCRETE CELLS FORM AHEAD OF THE CONVECTIVE LINE. AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550. MEAN STORM MOTION VECTOR 24040. ...WEISS URGENT - IMMEDIATE BROADCAST REQUESTED TORNADO WATCH NUMBER 799 STORM PREDICTION CENTER NORMAN OK 338 PM EDT WED OCT 24 2001 THE STORM PREDICTION CENTER HAS ISSUED A TORNADO WATCH FOR PORTIONS OF CENTRAL AND SOUTHERN LOWER MICHIGAN SOUTHEAST LAKE MICHIGAN SOUTHERN LAKE HURON EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 415 PM UNTIL 1000 PM EDT. 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 ALONG AND 110 STATUTE MILES EAST AND WEST OF A LINE FROM 40 MILES SOUTH SOUTHEAST OF KALAMAZOO MICHIGAN TO 35 MILES NORTH NORTHWEST OF SAGINAW MICHIGAN. 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 797...WW 798... DISCUSSION...THUNDERSTORMS ARE INCREASING ALONG THE COLD FRONT CROSSING LKAE MICHIGAN...AND OTHER STRONG/SEVERE STORMS ARE EXPECTED TO MOVE FROM NWRN INDIANA INTO SWRN LOWER MI BY 21-22Z. VAD WIND PROFILE FROM KGRR SHOWS STRONG VEERING WITH HEIGHT INDICATING POTENTIAL FOR SUPERCELL STORMS TO DEVELOP WITH UNSTABLE AIR MASS. 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 450. MEAN STORM MOTION VECTOR 23035. ...WEISS URGENT - IMMEDIATE BROADCAST REQUESTED TORNADO WATCH NUMBER 801 STORM PREDICTION CENTER NORMAN OK 623 PM EDT WED OCT 24 2001 THE STORM PREDICTION CENTER HAS ISSUED A TORNADO WATCH FOR PORTIONS OF EASTERN INDIANA NORTHERN KENTUCKY WESTERN...CENTRAL AND NORTHERN OHIO LAKE ERIE EFFECTIVE THIS WEDNESDAY NIGHT AND THURSDAY MORNING FROM 645 PM UNTIL MIDNIGHT EDT. ...THIS IS A PARTICULARLY DANGEROUS SITUATION... DAMAGING TORNADOES...LARGE HAIL TO 2 INCHES IN DIAMETER... THUNDERSTORM WIND GUSTS TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS. THE TORNADO WATCH AREA IS ALONG AND 95 STATUTE MILES EAST AND WEST OF A LINE FROM 45 MILES SOUTH SOUTHWEST OF CINCINNATI OHIO TO 50 MILES NORTHWEST OF CLEVELAND OHIO. 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...THIS TORNADO WATCH REPLACES TORNADO WATCH NUMBER 797. WATCH NUMBER 797 WILL NOT BE IN EFFECT AFTER 645 PM EDT. CONTINUE...WW 798...WW 799...WW 800... DISCUSSION...SUPERCELLS EXPECTED TO CONTINUE DEVELOPING IN VERY HIGH SHEAR ENVIRONMENT AHEAD OF STRONG SHORTWAVE TROUGH EJECTING NEWD ACROSS THE MID MS/LWR OH VLYS. MAIN CONVECTIVE MODE EXPECTED TO BE A SQUALL LINE WITH NUMEROUS EMBEDDED SUPERCELLS. STRENGTH OF DEEP SHEAR /ON THE ORDER OF 70 KTS/ SUGGESTS CONTINUING THREAT FOR A COUPLE STRONG TORNADOES IN ADDITION TO DAMAGING BOW WINDS/HAIL. AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM MOTION VECTOR 23050. ...CORFIDI URGENT - IMMEDIATE BROADCAST REQUESTED TORNADO WATCH NUMBER 802 STORM PREDICTION CENTER NORMAN OK 544 PM CDT WED OCT 24 2001 THE STORM PREDICTION CENTER HAS ISSUED A TORNADO WATCH FOR PORTIONS OF SOUTHERN INDIANA KENTUCKY WESTERN AND MIDDLE TENNESSEE EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 600 PM UNTIL 1100 PM 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 ALONG AND 90 STATUTE MILES EAST AND WEST OF A LINE FROM 45 MILES SOUTH SOUTHEAST OF JACKSON TENNESSEE TO 35 MILES NORTH OF LEXINGTON KENTUCKY. 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...THIS TORNADO WATCH REPLACES TORNADO WATCH NUMBER 798. WATCH NUMBER 798 WILL NOT BE IN EFFECT AFTER 600 PM CDT. CONTINUE...WW 797...WW 799...WW 800...WW 801... DISCUSSION...WHILE STRONGEST SURFACE PRESSURE RISE/FALL COUPLET IS HEADED NE ACROSS OH...IN ADVANCE OF EJECTING MID MS VLY SHORTWAVE TROUGH...A BAND OF STRONG /60+ KT/ 0-6 KM WSWLY SHEAR WILL SWEEP E ACROSS EXISTING SQUALL LINE WITH EMBEDDED SUPERCELLS. STRONG SHEAR AND RELATIVELY WARM/MOIST BOUNDARY LAYER ENVIRONMENT APPEAR SUPPORTIVE OF A FEW TORNADOES...MAINLY IN CRESTS AND APEXES OF EMBEDDED LEWPS. 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 550. MEAN STORM MOTION VECTOR 24045. ...CORFIDI Link to comment Share on other sites More sharing options...
Hoosier Posted October 24, 2011 Author Share Posted October 24, 2011 time lapse of a tornado hitting a building near the Indiana toll road Link to comment Share on other sites More sharing options...
Thundersnow12 Posted October 24, 2011 Share Posted October 24, 2011 Link to comment Share on other sites More sharing options...
andyhb Posted October 24, 2011 Share Posted October 24, 2011 Wondering if we're gonna get something like this this year, although it most likely won't occur until November. Link to comment Share on other sites More sharing options...
Hoosier Posted October 24, 2011 Author Share Posted October 24, 2011 I remember this day pretty well. There were 60-65 degree dewpoints into southern Michigan which is usually enough to do the trick in these fall setups. Link to comment Share on other sites More sharing options...
Thundersnow12 Posted October 24, 2011 Share Posted October 24, 2011 I remember this day pretty well. There were 60-65 degree dewpoints into southern Michigan which is usually enough to do the trick in these fall setups. I was only 11 years old so I don't remember it lol but have looked at the setup for it before. Link to comment Share on other sites More sharing options...
Thunder Road Posted October 24, 2011 Share Posted October 24, 2011 IWX posted something about it on their page: http://www.crh.noaa.gov/iwx/program_areas/events/2001/10_24_01_tor/index.php (I didn't get a chance to read it yet myself, but I figured I'd post it here) Link to comment Share on other sites More sharing options...
radionicist Posted October 26, 2011 Share Posted October 26, 2011 Thanks for the post, Hoosier. The path of F3 in Putnam County, Ohio was about a mile from my house. My wife heard it, but I was operating a Skywarn radio net at the time, and missed the whole thing. Link to comment Share on other sites More sharing options...
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