Compact News: NOAA's National Weather Service SPC Tornado/Severe Thunderstorm Watches Update

Sunday, September 19, 2010

NOAA's National Weather Service SPC Tornado/Severe Thunderstorm Watches Update

SPC Severe Thunderstorm Watch 674
Sun, 19 Sep 2010 04:02:03 -0500

URGENT - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WATCH NUMBER 674 NWS STORM PREDICTION CENTER NORMAN OK 400 AM CDT SUN SEP 19 2010 THE NWS STORM PREDICTION CENTER HAS ISSUED A SEVERE THUNDERSTORM WATCH FOR PORTIONS OF CENTRAL ILLINOIS NORTHERN AND EASTERN MISSOURI EFFECTIVE THIS SUNDAY MORNING FROM 400 AM UNTIL 1000 AM CDT. HAIL TO 1.5 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS. THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 55 STATUTE MILES NORTH AND SOUTH OF A LINE FROM 35 MILES SOUTHWEST OF LAMONI IOWA TO 30 MILES SOUTHEAST OF DECATUR ILLINOIS. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU4). REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE FAVORABLE FOR 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. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES. OTHER WATCH INFORMATION...CONTINUE...WW 673... DISCUSSION...SCTD ELEVATED TSTMS EXPECTED TO PERSIST IN WAA ZONE DOWNSTREAM FROM UPR IMPULSE MOVING ESE ACROSS THE LWR MO VLY. MOISTURE-RICH WSWLY LLJ MAY CONTINUE TO SUPPORT A FEW SUSTAINED STORMS/MARGINAL SUPERCELLS WITH HAIL AND POSSIBLY LOCALLY DMGG WIND THROUGH LATER THIS MORNING. GRADUAL WEAKENING OF LLJ AFTER SUNRISE...AND EWD MOVEMENT OF THE WIND MAX BEYOND RESERVOIR OF GREATEST MOISTURE/ INSTABILITY IN WRN MO...SUGGEST THAT THE STORMS SHOULD DIMINISH AS THEY MOVE/DEVELOP EWD BEYOND CNTRL IL LATER TODAY. AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM MOTION VECTOR 29020. ...CORFIDI

SPC Severe Thunderstorm Watch 674 Status Reports
Sun, 19 Sep 2010 04:02:11 -0500

  STATUS FOR WATCH 0674 HAS NOT BEEN ISSUED YET

SPC Severe Thunderstorm Watch 673 Status Reports
Sun, 19 Sep 2010 02:58:03 -0500

  STATUS REPORT ON WW 673  SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 35 ESE STJ TO 20 N STJ.  ..NWSSPC..09/19/10  ATTN...WFO...DMX...LSX...EAX...   STATUS REPORT FOR WS 673   SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS   ILC001-009-149-190940-  IL  .    ILLINOIS COUNTIES INCLUDED ARE  ADAMS                BROWN               PIKE                   IAC001-003-009-029-039-049-053-077-117-121-153-159-173-175-181- 185-190940-  IA  .    IOWA COUNTIES INCLUDED ARE  ADAIR                ADAMS               AUDUBON              CASS                 CLARKE              DALLAS               DECATUR              GUTHRIE             LUCAS                MADISON              POLK                RINGGOLD             TAYLOR               UNION               WARREN               WAYNE                   MOC001-025-061-063-075-079-081-103-111-115-117-121-127-129-137- 147-163-171-173-197-205-211-227-190940-

To change your subscriptions or preferences or stop subscriptions anytime, log in to your User Profile with your e-mail address. For questions or problems with the service, contact support@govdelivery.com.

This service is provided by NOAA’s National Weather Service.