Re: KS & NE could have a rough afternoon
Posted by JAC on 6/17/2009, 1:59 pm
 URGENT - IMMEDIATE BROADCAST REQUESTED TORNADO WATCH NUMBER 440 NWS STORM PREDICTION CENTER NORMAN OK 1255 PM CDT WED JUN 17 2009 THE NWS STORM PREDICTION CENTER HAS ISSUED A TORNADO WATCH FOR PORTIONS OF SOUTHWEST IOWA PARTS OF NORTHEAST KANSAS PARTS OF NORTHWEST MISSOURI PARTS OF SOUTH CENTRAL AND SOUTHEAST NEBRASKA EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 1255 PM UNTIL 900 PM CDT. TORNADOES...HAIL TO 4 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS. THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 65 STATUTE MILES NORTH AND SOUTH OF A LINE FROM 70 MILES EAST OF SHENANDOAH IOWA TO 50 MILES WEST SOUTHWEST OF KEARNEY NEBRASKA. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU0). 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 439... DISCUSSION...EXTREMELY UNSTABLE AIRMASS WITH MLCAPES AOA 4000 J/KG SPREADING NWD WITH WARM FRONT ACROSS THE WATCH. EFFECTIVE SHEAR SUPPORTIVE OF SUPERCELLS WHICH INITIALLY WILL INCLUDE VERY LARGE HAIL. TORNADO THREAT WILL INCREASE DURING THE AFTERNOON AS STORMS CONTINUE TO DEVELOP ALONG AND N OF THE WARM FRONT. AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT TO 4 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 600. MEAN STORM MOTION VECTOR 26035. ...HALES Hazard Tornadoes EF2+ Tornadoes Likelihood Moderate Low Severe Wind 65 kt+ Wind High Moderate Severe Hail 2"+ Hail High High SEL0 URGENT - IMMEDIATE BROADCAST REQUESTED TORNADO WATCH NUMBER 440 NWS STORM PREDICTION CENTER NORMAN OK 1255 PM CDT WED JUN 17 2009 THE NWS STORM PREDICTION CENTER HAS ISSUED A TORNADO WATCH FOR PORTIONS OF SOUTHWEST IOWA PARTS OF NORTHEAST KANSAS PARTS OF NORTHWEST MISSOURI PARTS OF SOUTH CENTRAL AND SOUTHEAST NEBRASKA EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 1255 PM UNTIL 900 PM CDT. TORNADOES...HAIL TO 4 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS. THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 65 STATUTE MILES NORTH AND SOUTH OF A LINE FROM 70 MILES EAST OF SHENANDOAH IOWA TO 50 MILES WEST SOUTHWEST OF KEARNEY NEBRASKA. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU0). 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 439... DISCUSSION...EXTREMELY UNSTABLE AIRMASS WITH MLCAPES AOA 4000 J/KG SPREADING NWD WITH WARM FRONT ACROSS THE WATCH. EFFECTIVE SHEAR SUPPORTIVE OF SUPERCELLS WHICH INITIALLY WILL INCLUDE VERY LARGE HAIL. TORNADO THREAT WILL INCREASE DURING THE AFTERNOON AS STORMS CONTINUE TO DEVELOP ALONG AND N OF THE WARM FRONT. AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT TO 4 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 600. MEAN STORM MOTION VECTOR 26035. ...HALES Hazard Tornadoes EF2+ Tornadoes Likelihood Moderate Low Severe Wind 65 kt+ Wind High Moderate Severe Hail 2"+ Hail High High Note: Click for Watch Status Reports. WOUS64 KWNS 171749 WOU0 BULLETIN - IMMEDIATE BROADCAST REQUESTED TORNADO WATCH OUTLINE UPDATE FOR WT 440 NWS STORM PREDICTION CENTER NORMAN OK 1255 PM CDT WED JUN 17 2009 TORNADO WATCH 440 IS IN EFFECT UNTIL 900 PM CDT FOR THE FOLLOWING LOCATIONS IAC001-003-029-071-129-137-145-155-159-173-175-180200- /O.NEW.KWNS.TO.A.0440.090617T1755Z-090618T0200Z/ IA . IOWA COUNTIES INCLUDED ARE ADAIR ADAMS CASS FREMONT MILLS MONTGOMERY PAGE POTTAWATTAMIE RINGGOLD TAYLOR UNION KSC005-013-043-089-117-131-147-157-183-201-180200- /O.NEW.KWNS.TO.A.0440.090617T1755Z-090618T0200Z/ KS . KANSAS COUNTIES INCLUDED ARE ATCHISON BROWN DONIPHAN JEWELL MARSHALL NEMAHA PHILLIPS REPUBLIC SMITH WASHINGTON MOC003-005-021-063-075-087-147-227-180200- /O.NEW.KWNS.TO.A.0440.090617T1755Z-090618T0200Z/ MO . MISSOURI COUNTIES INCLUDED ARE ANDREW ATCHISON BUCHANAN DEKALB GENTRY HOLT NODAWAY WORTH NEC001-019-023-025-035-047-055-059-061-065-067-073-077-079-081- 083-093-095-097-099-109-121-125-127-129-131-133-137-143-147-151- 153-155-159-163-169-175-181-185-180200- /O.NEW.KWNS.TO.A.0440.090617T1755Z-090618T0200Z/ NE . NEBRASKA COUNTIES INCLUDED ARE ADAMS BUFFALO BUTLER CASS CLAY DAWSON DOUGLAS FILLMORE FRANKLIN FURNAS GAGE GOSPER GREELEY HALL HAMILTON HARLAN HOWARD JEFFERSON JOHNSON KEARNEY LANCASTER MERRICK NANCE NEMAHA NUCKOLLS OTOE PAWNEE PHELPS POLK RICHARDSON SALINE SARPY SAUNDERS SEWARD SHERMAN THAYER VALLEY WEBSTER YORK ATTN...WFO...DMX...GID...OAX...EAX...TOP... Hazard Tornadoes EF2+ Tornadoes Likelihood Moderate Low Severe Wind 65 kt+ Wind High Moderate Severe Hail 2"+ Hail High High Note: The Aviation Watch (SAW) product is an approximation to the watch area. The actual watch is depicted by the shaded areas. SAW0 WW 440 TORNADO IA KS MO NE 171755Z - 180200Z AXIS..65 STATUTE MILES NORTH AND SOUTH OF LINE.. 70E SDA/SHENANDOAH IA/ - 50WSW EAR/KEARNEY NE/ ..AVIATION COORDS.. 55NM N/S /46SSW DSM - 36ENE MCK/ HAIL SURFACE AND ALOFT..4 INCHES. WIND GUSTS..70 KNOTS. MAX TOPS TO 600. MEAN STORM MOTION VECTOR 26035. LAT...LON 39799408 39509987 41389987 41689408 THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS FOR WOU0. Watch 440 Status Report Message has not been issued yet. |
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In this thread:
KS & NE could have a rough afternoon - JAC, 6/17/2009, 1:38 pm
- Nice chase report and pictures of the Aurora, NE twister - JAC, 6/18/2009, 8:13 am
- Incredible Video from SE NE - JAC, 6/18/2009, 1:46 pm
- Re: Incredible Video from SE NE - JAC, 6/18/2009, 1:49 pm
- Incredible Video from SE NE - JAC, 6/18/2009, 1:46 pm
- Roger is under a rotating wall cloud - JAC, 6/17/2009, 9:37 pm
- 58K-ft Cell - JAC, 6/17/2009, 9:41 pm
- Coming up to a very strong couplet - JAC, 6/17/2009, 9:43 pm
- 58K-ft Cell - JAC, 6/17/2009, 9:41 pm
- Insane Instability - JAC, 6/17/2009, 1:45 pm
- Could see it all happen here today - JAC, 6/17/2009, 1:47 pm
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