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

Wednesday, October 27, 2010

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

SPC Tornado Watch 736
Wed, 27 Oct 2010 19:00:03 -0500

URGENT - IMMEDIATE BROADCAST REQUESTED TORNADO WATCH NUMBER 736 NWS STORM PREDICTION CENTER NORMAN OK 745 PM EDT WED OCT 27 2010 THE NWS STORM PREDICTION CENTER HAS ISSUED A TORNADO WATCH FOR PORTIONS OF SOUTHERN MARYLAND EXTREME NORTHERN NORTH CAROLINA SOUTH CENTRAL AND SOUTHEAST VIRGINIA COASTAL WATERS EFFECTIVE THIS WEDNESDAY NIGHT AND THURSDAY MORNING FROM 745 PM UNTIL 200 AM EDT. TORNADOES...HAIL TO 1 INCH IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS. THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 90 STATUTE MILES EAST AND WEST OF A LINE FROM 15 MILES SOUTH OF SOUTH HILL VIRGINIA TO 20 MILES EAST NORTHEAST OF PATUXENT RIVER MARYLAND. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU6). 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 733. WATCH NUMBER 733 WILL NOT BE IN EFFECT AFTER 745 PM EDT. CONTINUE...WW 734...WW 735... DISCUSSION...ISOLATED SEVERE STORMS CONTINUE MOVING ENEWD OVER SOUTHEAST VA...WITH ADDITIONAL STORMS INCREASING IN A LINE FROM EXTENDING SWWD OVER SOUTH CENTRAL VA. AIR MASS REMAINS MOIST AND MODERATELY UNSTABLE WITHIN AN ENVIRONMENT CHARACTERIZED BY 35-45 KT DEEP LAYER SHEAR...WHICH WILL MAINTAIN THREAT FOR SUPERCELL STRUCTURES. A SSWLY LOW LEVEL JET IS FORECAST TO INTENSIFY THIS EVENING INCREASING LOW LEVEL SHEAR AND SRH WITH CONTINUED THREAT FOR A FEW TORNADOES. AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT TO 1 INCH. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 450. MEAN STORM MOTION VECTOR 23030. ...WEISS

SPC Tornado Watch 735
Wed, 27 Oct 2010 19:00:06 -0500

URGENT - IMMEDIATE BROADCAST REQUESTED TORNADO WATCH NUMBER 735 NWS STORM PREDICTION CENTER NORMAN OK 205 PM EDT WED OCT 27 2010 THE NWS STORM PREDICTION CENTER HAS ISSUED A TORNADO WATCH FOR PORTIONS OF NORTHEAST GEORGIA WESTERN AND CENTRAL NORTH CAROLINA WESTERN SOUTH CAROLINA EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 205 PM UNTIL 900 PM EDT. TORNADOES...HAIL TO 1 INCH IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS. THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 50 STATUTE MILES EITHER SIDE OF A LINE FROM 40 MILES SOUTH OF ANDERSON SOUTH CAROLINA TO 65 MILES EAST NORTHEAST OF DANVILLE VIRGINIA. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU5). 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 733...WW 734... DISCUSSION...TSTMS DEVELOPING ALONG SW-NE ORIENTED SURFACE BAROCLINIC ZONE ARE EXPECTED TO INCREASE IN COVERAGE AND INTENSITY THIS AFTERNOON WITHIN A WARM AND HUMID AIR MASS WITH MLCAPE VALUES OF 1000-1500 J/KG. A 40 KT SWLY LLJ WILL BE MAINTAINED ACROSS THE REGION THROUGH THE REMAINDER OF THE DAY...WHICH WHEN COUPLED WITH 50-55 KT SWLY MIDLEVEL WIND FIELD...IS RESULTING IN A SUFFICIENTLY SHEARED KINEMATIC ENVIRONMENT FOR SUPERCELLS AND BOWING STRUCTURES CAPABLE OF DAMAGING WINDS AND A COUPLE OF TORNADOES. AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT TO 1 INCH. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM MOTION VECTOR 24030. ...MEAD

SPC Tornado Watch 736 Status Reports
Wed, 27 Oct 2010 19:00:05 -0500

  STATUS FOR WATCH 0736 HAS NOT BEEN ISSUED YET

SPC Tornado Watch 735 Status Reports
Wed, 27 Oct 2010 19:00:09 -0500

  STATUS REPORT ON WW 735  SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 25 SW AND TO 45 NE HKY.  A MESOSCALE DISCUSSION WILL BE FORTHCOMING SOON DISCUSSING THE PROSPECTS FOR A NEW WATCH ISSUANCE ACROSS THE PORTIONS OF THE CAROLINAS.  ..SMITH..10/27/10  ATTN...WFO...CAE...GSP...RAH...   STATUS REPORT FOR WT 735   SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS   GAC073-105-181-189-280040-  GA  .    GEORGIA COUNTIES INCLUDED ARE  COLUMBIA             ELBERT              LINCOLN              MCDUFFIE                NCC001-007-025-035-037-045-057-059-063-067-069-071-077-081-083- 097-109-119-123-135-145-151-159-167-179-181-185-280040-  NC  .    NORTH CAROLINA COUNTIES INCLUDED ARE  ALAMANCE             ANSON               CABARRUS             CATAWBA              CHATHAM             CLEVELAND            DAVIDSON             DAVIE               DURHAM               FORSYTH              FRANKLIN            GASTON               GRANVILLE            GUILFORD            HALIFAX              IREDELL              LINCOLN             MECKLENBURG          MONTGOMERY           ORANGE              PERSON

SPC Tornado Watch 734 Status Reports
Wed, 27 Oct 2010 19:00:12 -0500

  STATUS REPORT ON WW 734  SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 30 NE MEI TO 30 NNW LGC TO 25 SW AND.  WW 734 WILL BE ALLOWED TO EXPIRE AT 280000Z.  FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 2026  ..SMITH..10/27/10  ATTN...WFO...BMX...FFC...JAN...   STATUS REPORT FOR WT 734   SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS   ALC001-007-017-021-027-037-047-051-065-081-085-087-091-101-105- 111-119-123-280000-  AL  .    ALABAMA COUNTIES INCLUDED ARE  AUTAUGA              BIBB                CHAMBERS             CHILTON              CLAY                COOSA                DALLAS               ELMORE              HALE                 LEE                  LOWNDES             MACON                MARENGO              MONTGOMERY          PERRY                RANDOLPH             SUMTER              TALLAPOOSA             GAC035-059-063-077-089-113-133-141-145-149-151-159-171-199-207- 211-217-219-221-231-237-247-255-265-285-293-297-301-317- 280000-  GA  .    GEORGIA COUNTIES INCLUDED ARE

SPC Tornado Watch 733 Status Reports
Wed, 27 Oct 2010 18:19:05 -0500

  STATUS REPORT ON WW 733  SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 25 SW DCA TO 35 SE BWI TO 25 ENE SBY.  FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 2025.  ..PETERS..10/27/10  ATTN...WFO...LWX...PHI...AKQ...RNK...   STATUS REPORT FOR WT 733   SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS   MDC009-017-019-037-039-045-047-282340-  MD  .    MARYLAND COUNTIES INCLUDED ARE  CALVERT              CHARLES             DORCHESTER           ST. MARYS            SOMERSET            WICOMICO             WORCESTER               NCC033-131-157-282340-  NC  .    NORTH CAROLINA COUNTIES INCLUDED ARE  CASWELL              NORTHAMPTON         ROCKINGHAM             VAC001-007-011-025-029-031-033-036-037-041-049-053-057-065-073- 075-081-083-085-087-093-095-097-099-101-103-109-111-115-117-119- 127-131-133-135-143-145-147-149-159-175-177-179-181-183-193-199- 550-570-590-595-620-630-650-670-680-700-710-730-735-740-760-800- 810-830-282340-

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