SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE CHARLESTON SC
128 PM EST THU DEC 11 2008
THE NATIONAL WEATHER SERVICE IN CHARLESTON HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
BERKELEY COUNTY IN SOUTHEAST SOUTH CAROLINA...
CHARLESTON COUNTY IN SOUTHEAST SOUTH CAROLINA...
NORTHEASTERN COLLETON COUNTY IN SOUTHEAST SOUTH CAROLINA...
DORCHESTER COUNTY IN SOUTHEAST SOUTH CAROLINA...
* UNTIL 300 PM EST
* AT 125 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING
FROM INDIAN FIELD TO EDISTO ISLAND...MOVING NORTHEAST AT 45 MPH.
* SOME LOCATIONS IN OR NEAR THE PATH OF THE STORM INCLUDE...
SAINT GEORGE...ADAMS RUN...
INDIAN FIELD...YONGES ISLAND...
WADMALAW ISLAND...RAVENEL...
SLANDS BRIDGE...RIDGEVILLE...
PINEWOOD PREPARATORY...KNIGHTSVILLE...
A TORNADO WATCH IS ALSO IN EFFECT. SEVERE THUNDERSTORMS CAN PRODUCE
TORNADOES SUDDENLY. BE ALERT FOR RAPIDLY CHANGING WEATHER CONDITIONS
AND BE READY TO ACT QUICKLY.
Severe weather Watches & Warnings December 9, 10 & 11
Moderator: S2k Moderators
Forum rules
The posts in this forum are NOT official forecast and should not be used as such. They are just the opinion of the poster and may or may not be backed by sound meteorological data. They are NOT endorsed by any professional institution or STORM2K.
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CrazyC83
- Professional-Met
- Posts: 34001
- Joined: Tue Mar 07, 2006 11:57 pm
- Location: Deep South, for the first time!
MESOSCALE DISCUSSION 2452
NWS STORM PREDICTION CENTER NORMAN OK
1228 PM CST THU DEC 11 2008
AREAS AFFECTED...CAROLINAS
CONCERNING...TORNADO WATCH 952...953...
VALID 111828Z - 112000Z
THE SEVERE WEATHER THREAT FOR TORNADO WATCH 952...953...CONTINUES.
THIN SPOTS IN OVERCAST ACROSS THE CSTL PLAINS OF SC/NC HAVE ALLOWED
SFC TEMPERATURES TO RISE INTO THE UPR 60S/NEAR 70 DEG F AS OF 18Z
WITH A CONTINUED INFLUX OF MID-UPR 60S DEG F DEW POINTS AS FAR WEST
AS THE PIEDMONT. 18Z SFC LOW WAS OVER NRN GA WITH REGION OF
GREATEST PRESSURE FALLS ALONG A STATIONARY FRONT OVER WRN NC. 12Z
NAM GUIDANCE SUGGESTING SFC LOW DEVELOPMENT INTO WRN NC BY 21-00Z
THUS SEEMS REASONABLE.
AGEOSTROPHIC RESPONSE TO THE DEEPENING LOW WILL RESULT IN INCREASING
SELY LLVL FLOW ACROSS THE SC/NC PIEDMONT/CSTL PLAINS THROUGH THE
AFTN...ENHANCING THE EFFECTIVE LOW/DEEP-LAYER SHEAR PROFILES. THE
STRENGTHENING KINEMATIC PROFILE MAY ALREADY BE SUPPORTING THE
CURRENT CONVECTIVE MODE TREND TOWARD MORE DISCRETE...MINI-SUPERCELL
STRUCTURES WITHIN THE NEWD MOVING LINE OVER SRN SC.
FARTHER TO THE NE...STREAMER SHOWERS/TSTMS MOVING OFF THE GULF
STREAM INTO CSTL SC/NC CONTINUE TO DEEPEN AS LARGER SCALE HEIGHT
FALLS BEGIN TO SPREAD NEWD. ISOLD STORMS OVER SERN NC HAVE
EXHIBITED BRIEF SUPERCELL CHARACTERISTICS AND THE ENVIRONMENT SHOULD
BECOME INCREASINGLY FAVORABLE FOR SVR TSTMS THROUGH THE EARLY
EVENING.
STRONGEST TORNADO POTENTIAL THROUGH 21Z SHOULD EXIST ACROSS MOST OF
SC NEWD INTO THE CNTRL PIEDMONT/WRN COASTAL PLAINS OF NC.
HERE...SFC DEW POINTS IN THE UPR 60S WILL BECOME COINCIDENT WITH THE
STRONGEST LLVL SHEAR PROFILES DOWNSTREAM FROM THE SFC LOW.
OTHERWISE...DMGG WINDS WILL LIKELY ACCOMPANY STRONGER STORMS.
..RACY.. 12/11/2008
ATTN...WFO...AKQ...MHX...RAH...ILM...CHS...CAE...GSP...
LAT...LON 32288040 34738181 36467811 36327538 34427619 32307927
32288040
NWS STORM PREDICTION CENTER NORMAN OK
1228 PM CST THU DEC 11 2008
AREAS AFFECTED...CAROLINAS
CONCERNING...TORNADO WATCH 952...953...
VALID 111828Z - 112000Z
THE SEVERE WEATHER THREAT FOR TORNADO WATCH 952...953...CONTINUES.
THIN SPOTS IN OVERCAST ACROSS THE CSTL PLAINS OF SC/NC HAVE ALLOWED
SFC TEMPERATURES TO RISE INTO THE UPR 60S/NEAR 70 DEG F AS OF 18Z
WITH A CONTINUED INFLUX OF MID-UPR 60S DEG F DEW POINTS AS FAR WEST
AS THE PIEDMONT. 18Z SFC LOW WAS OVER NRN GA WITH REGION OF
GREATEST PRESSURE FALLS ALONG A STATIONARY FRONT OVER WRN NC. 12Z
NAM GUIDANCE SUGGESTING SFC LOW DEVELOPMENT INTO WRN NC BY 21-00Z
THUS SEEMS REASONABLE.
AGEOSTROPHIC RESPONSE TO THE DEEPENING LOW WILL RESULT IN INCREASING
SELY LLVL FLOW ACROSS THE SC/NC PIEDMONT/CSTL PLAINS THROUGH THE
AFTN...ENHANCING THE EFFECTIVE LOW/DEEP-LAYER SHEAR PROFILES. THE
STRENGTHENING KINEMATIC PROFILE MAY ALREADY BE SUPPORTING THE
CURRENT CONVECTIVE MODE TREND TOWARD MORE DISCRETE...MINI-SUPERCELL
STRUCTURES WITHIN THE NEWD MOVING LINE OVER SRN SC.
FARTHER TO THE NE...STREAMER SHOWERS/TSTMS MOVING OFF THE GULF
STREAM INTO CSTL SC/NC CONTINUE TO DEEPEN AS LARGER SCALE HEIGHT
FALLS BEGIN TO SPREAD NEWD. ISOLD STORMS OVER SERN NC HAVE
EXHIBITED BRIEF SUPERCELL CHARACTERISTICS AND THE ENVIRONMENT SHOULD
BECOME INCREASINGLY FAVORABLE FOR SVR TSTMS THROUGH THE EARLY
EVENING.
STRONGEST TORNADO POTENTIAL THROUGH 21Z SHOULD EXIST ACROSS MOST OF
SC NEWD INTO THE CNTRL PIEDMONT/WRN COASTAL PLAINS OF NC.
HERE...SFC DEW POINTS IN THE UPR 60S WILL BECOME COINCIDENT WITH THE
STRONGEST LLVL SHEAR PROFILES DOWNSTREAM FROM THE SFC LOW.
OTHERWISE...DMGG WINDS WILL LIKELY ACCOMPANY STRONGER STORMS.
..RACY.. 12/11/2008
ATTN...WFO...AKQ...MHX...RAH...ILM...CHS...CAE...GSP...
LAT...LON 32288040 34738181 36467811 36327538 34427619 32307927
32288040
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Dave
- Retired Staff
- Posts: 13442
- Age: 74
- Joined: Tue Aug 01, 2006 3:57 pm
- Location: Milan Indiana
- Contact:
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE COLUMBIA SC
134 PM EST THU DEC 11 2008
THE NATIONAL WEATHER SERVICE IN COLUMBIA HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
RICHLAND COUNTY IN CENTRAL SOUTH CAROLINA
EASTERN LEXINGTON COUNTY IN CENTRAL SOUTH CAROLINA
WESTERN SUMTER COUNTY IN CENTRAL SOUTH CAROLINA
CLARENDON COUNTY IN CENTRAL SOUTH CAROLINA
EASTERN CALHOUN COUNTY IN CENTRAL SOUTH CAROLINA
EASTERN ORANGEBURG COUNTY IN CENTRAL SOUTH CAROLINA
* UNTIL 215 PM EST
* AT 129 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING
FROM SOUTH CONGAREE TO 13 MILES SOUTHWEST OF EASTOVER TO 14 MILES
SOUTHEAST OF ELLOREE...OR ALONG A LINE EXTENDING FROM RED BANK TO
17 MILES SOUTHEAST OF CAYCE TO 15 MILES NORTHEAST OF SAINT
GEORGE...AND MOVING NORTHEAST AT 50 MPH.
* SOME COMMUNITIES IN THE WARNING AREA INCLUDE SPRINGDALE...WEST
COLUMBIA...ST. ANDREWS...COLUMBIA...FIVE POINTS...SUMMERTON...
FOREST ACRES...ARCADIA LAKES...WOODFIELDS...DENTSVILLE...FORT
JACKSON...MANNING...MILLWOOD...OAKLAND...SUMTER AND SOUTH SUMTER
NATIONAL WEATHER SERVICE COLUMBIA SC
134 PM EST THU DEC 11 2008
THE NATIONAL WEATHER SERVICE IN COLUMBIA HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
RICHLAND COUNTY IN CENTRAL SOUTH CAROLINA
EASTERN LEXINGTON COUNTY IN CENTRAL SOUTH CAROLINA
WESTERN SUMTER COUNTY IN CENTRAL SOUTH CAROLINA
CLARENDON COUNTY IN CENTRAL SOUTH CAROLINA
EASTERN CALHOUN COUNTY IN CENTRAL SOUTH CAROLINA
EASTERN ORANGEBURG COUNTY IN CENTRAL SOUTH CAROLINA
* UNTIL 215 PM EST
* AT 129 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING
FROM SOUTH CONGAREE TO 13 MILES SOUTHWEST OF EASTOVER TO 14 MILES
SOUTHEAST OF ELLOREE...OR ALONG A LINE EXTENDING FROM RED BANK TO
17 MILES SOUTHEAST OF CAYCE TO 15 MILES NORTHEAST OF SAINT
GEORGE...AND MOVING NORTHEAST AT 50 MPH.
* SOME COMMUNITIES IN THE WARNING AREA INCLUDE SPRINGDALE...WEST
COLUMBIA...ST. ANDREWS...COLUMBIA...FIVE POINTS...SUMMERTON...
FOREST ACRES...ARCADIA LAKES...WOODFIELDS...DENTSVILLE...FORT
JACKSON...MANNING...MILLWOOD...OAKLAND...SUMTER AND SOUTH SUMTER
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Dave
- Retired Staff
- Posts: 13442
- Age: 74
- Joined: Tue Aug 01, 2006 3:57 pm
- Location: Milan Indiana
- Contact:
MESOSCALE DISCUSSION 2452
NWS STORM PREDICTION CENTER NORMAN OK
1228 PM CST THU DEC 11 2008
AREAS AFFECTED...CAROLINAS
CONCERNING...TORNADO WATCH 952...953...
VALID 111828Z - 112000Z
THE SEVERE WEATHER THREAT FOR TORNADO WATCH 952...953...CONTINUES.
THIN SPOTS IN OVERCAST ACROSS THE CSTL PLAINS OF SC/NC HAVE ALLOWED
SFC TEMPERATURES TO RISE INTO THE UPR 60S/NEAR 70 DEG F AS OF 18Z
WITH A CONTINUED INFLUX OF MID-UPR 60S DEG F DEW POINTS AS FAR WEST
AS THE PIEDMONT. 18Z SFC LOW WAS OVER NRN GA WITH REGION OF
GREATEST PRESSURE FALLS ALONG A STATIONARY FRONT OVER WRN NC. 12Z
NAM GUIDANCE SUGGESTING SFC LOW DEVELOPMENT INTO WRN NC BY 21-00Z
THUS SEEMS REASONABLE.
AGEOSTROPHIC RESPONSE TO THE DEEPENING LOW WILL RESULT IN INCREASING
SELY LLVL FLOW ACROSS THE SC/NC PIEDMONT/CSTL PLAINS THROUGH THE
AFTN...ENHANCING THE EFFECTIVE LOW/DEEP-LAYER SHEAR PROFILES. THE
STRENGTHENING KINEMATIC PROFILE MAY ALREADY BE SUPPORTING THE
CURRENT CONVECTIVE MODE TREND TOWARD MORE DISCRETE...MINI-SUPERCELL
STRUCTURES WITHIN THE NEWD MOVING LINE OVER SRN SC.
FARTHER TO THE NE...STREAMER SHOWERS/TSTMS MOVING OFF THE GULF
STREAM INTO CSTL SC/NC CONTINUE TO DEEPEN AS LARGER SCALE HEIGHT
FALLS BEGIN TO SPREAD NEWD. ISOLD STORMS OVER SERN NC HAVE
EXHIBITED BRIEF SUPERCELL CHARACTERISTICS AND THE ENVIRONMENT SHOULD
BECOME INCREASINGLY FAVORABLE FOR SVR TSTMS THROUGH THE EARLY
EVENING.
STRONGEST TORNADO POTENTIAL THROUGH 21Z SHOULD EXIST ACROSS MOST OF
SC NEWD INTO THE CNTRL PIEDMONT/WRN COASTAL PLAINS OF NC.
HERE...SFC DEW POINTS IN THE UPR 60S WILL BECOME COINCIDENT WITH THE
STRONGEST LLVL SHEAR PROFILES DOWNSTREAM FROM THE SFC LOW.
OTHERWISE...DMGG WINDS WILL LIKELY ACCOMPANY STRONGER STORMS.
..RACY.. 12/11/2008
NWS STORM PREDICTION CENTER NORMAN OK
1228 PM CST THU DEC 11 2008
AREAS AFFECTED...CAROLINAS
CONCERNING...TORNADO WATCH 952...953...
VALID 111828Z - 112000Z
THE SEVERE WEATHER THREAT FOR TORNADO WATCH 952...953...CONTINUES.
THIN SPOTS IN OVERCAST ACROSS THE CSTL PLAINS OF SC/NC HAVE ALLOWED
SFC TEMPERATURES TO RISE INTO THE UPR 60S/NEAR 70 DEG F AS OF 18Z
WITH A CONTINUED INFLUX OF MID-UPR 60S DEG F DEW POINTS AS FAR WEST
AS THE PIEDMONT. 18Z SFC LOW WAS OVER NRN GA WITH REGION OF
GREATEST PRESSURE FALLS ALONG A STATIONARY FRONT OVER WRN NC. 12Z
NAM GUIDANCE SUGGESTING SFC LOW DEVELOPMENT INTO WRN NC BY 21-00Z
THUS SEEMS REASONABLE.
AGEOSTROPHIC RESPONSE TO THE DEEPENING LOW WILL RESULT IN INCREASING
SELY LLVL FLOW ACROSS THE SC/NC PIEDMONT/CSTL PLAINS THROUGH THE
AFTN...ENHANCING THE EFFECTIVE LOW/DEEP-LAYER SHEAR PROFILES. THE
STRENGTHENING KINEMATIC PROFILE MAY ALREADY BE SUPPORTING THE
CURRENT CONVECTIVE MODE TREND TOWARD MORE DISCRETE...MINI-SUPERCELL
STRUCTURES WITHIN THE NEWD MOVING LINE OVER SRN SC.
FARTHER TO THE NE...STREAMER SHOWERS/TSTMS MOVING OFF THE GULF
STREAM INTO CSTL SC/NC CONTINUE TO DEEPEN AS LARGER SCALE HEIGHT
FALLS BEGIN TO SPREAD NEWD. ISOLD STORMS OVER SERN NC HAVE
EXHIBITED BRIEF SUPERCELL CHARACTERISTICS AND THE ENVIRONMENT SHOULD
BECOME INCREASINGLY FAVORABLE FOR SVR TSTMS THROUGH THE EARLY
EVENING.
STRONGEST TORNADO POTENTIAL THROUGH 21Z SHOULD EXIST ACROSS MOST OF
SC NEWD INTO THE CNTRL PIEDMONT/WRN COASTAL PLAINS OF NC.
HERE...SFC DEW POINTS IN THE UPR 60S WILL BECOME COINCIDENT WITH THE
STRONGEST LLVL SHEAR PROFILES DOWNSTREAM FROM THE SFC LOW.
OTHERWISE...DMGG WINDS WILL LIKELY ACCOMPANY STRONGER STORMS.
..RACY.. 12/11/2008
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Dave
- Retired Staff
- Posts: 13442
- Age: 74
- Joined: Tue Aug 01, 2006 3:57 pm
- Location: Milan Indiana
- Contact:
TORNADO WARNING
NATIONAL WEATHER SERVICE COLUMBIA SC
140 PM EST THU DEC 11 2008
THE NATIONAL WEATHER SERVICE IN COLUMBIA HAS ISSUED A
* TORNADO WARNING FOR...
NORTHWESTERN FAIRFIELD COUNTY IN CENTRAL SOUTH CAROLINA
NORTHEASTERN NEWBERRY COUNTY IN CENTRAL SOUTH CAROLINA
* UNTIL 230 PM EST
* AT 134 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO OVER FAIRFIELD
COUNTY...OR ABOUT 16 MILES WEST OF WINNSBORO...MOVING NORTH AT 50
MPH.
* THE TORNADO WILL OTHERWISE REMAIN OVER MAINLY RURAL AREAS OF THE
INDICATED COUNTY.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 700 PM EST THURSDAY EVENING
FOR CENTRAL SOUTH CAROLINA. A SEVERE THUNDERSTORM WATCH ALSO REMAINS
IN EFFECT UNTIL 300 PM EST THURSDAY AFTERNOON FOR EAST CENTRAL
GEORGIA AND CENTRAL SOUTH CAROLINA.
NATIONAL WEATHER SERVICE COLUMBIA SC
140 PM EST THU DEC 11 2008
THE NATIONAL WEATHER SERVICE IN COLUMBIA HAS ISSUED A
* TORNADO WARNING FOR...
NORTHWESTERN FAIRFIELD COUNTY IN CENTRAL SOUTH CAROLINA
NORTHEASTERN NEWBERRY COUNTY IN CENTRAL SOUTH CAROLINA
* UNTIL 230 PM EST
* AT 134 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO OVER FAIRFIELD
COUNTY...OR ABOUT 16 MILES WEST OF WINNSBORO...MOVING NORTH AT 50
MPH.
* THE TORNADO WILL OTHERWISE REMAIN OVER MAINLY RURAL AREAS OF THE
INDICATED COUNTY.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 700 PM EST THURSDAY EVENING
FOR CENTRAL SOUTH CAROLINA. A SEVERE THUNDERSTORM WATCH ALSO REMAINS
IN EFFECT UNTIL 300 PM EST THURSDAY AFTERNOON FOR EAST CENTRAL
GEORGIA AND CENTRAL SOUTH CAROLINA.
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CrazyC83
- Professional-Met
- Posts: 34001
- Joined: Tue Mar 07, 2006 11:57 pm
- Location: Deep South, for the first time!
SEL4
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 954
NWS STORM PREDICTION CENTER NORMAN OK
315 PM EST THU DEC 11 2008
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
EXTREME NORTHEAST NORTH CAROLINA
SOUTHEAST VIRGINIA
COASTAL WATERS
EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 315 PM UNTIL
900 PM EST.
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 25 STATUTE
MILES EITHER SIDE OF A LINE FROM 100 MILES WEST OF NORFOLK
VIRGINIA TO 55 MILES EAST OF NORFOLK VIRGINIA. FOR A COMPLETE
DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE
(WOUS64 KWNS WOU4).
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 952...WW 953...
DISCUSSION...PRONOUNCED WARM FRONT STRETCHED ALONG A LINE FROM S OF
WAL TO AVC. AIR MASS SOUTH OF THE FRONT HAS BECOME RELATIVELY WARM
AND HUMID WITH MLCAPES UP TO 500 J/KG. ALTHOUGH INSTABILITY IS
WEAK... LOW/DEEP LAYER SHEAR IS FAVORABLE FOR SUPERCELLS AND
TORNADOES. STORM COVERAGE IS EXPECTED TO INCREASE INTO THE EARLY
EVENING HOURS AS SURFACE LOW AND UPPER LEVEL TROUGH SHIFT EWD INTO
THE REGION.
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 19040.
...IMY
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 954
NWS STORM PREDICTION CENTER NORMAN OK
315 PM EST THU DEC 11 2008
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
EXTREME NORTHEAST NORTH CAROLINA
SOUTHEAST VIRGINIA
COASTAL WATERS
EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 315 PM UNTIL
900 PM EST.
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 25 STATUTE
MILES EITHER SIDE OF A LINE FROM 100 MILES WEST OF NORFOLK
VIRGINIA TO 55 MILES EAST OF NORFOLK VIRGINIA. FOR A COMPLETE
DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE
(WOUS64 KWNS WOU4).
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 952...WW 953...
DISCUSSION...PRONOUNCED WARM FRONT STRETCHED ALONG A LINE FROM S OF
WAL TO AVC. AIR MASS SOUTH OF THE FRONT HAS BECOME RELATIVELY WARM
AND HUMID WITH MLCAPES UP TO 500 J/KG. ALTHOUGH INSTABILITY IS
WEAK... LOW/DEEP LAYER SHEAR IS FAVORABLE FOR SUPERCELLS AND
TORNADOES. STORM COVERAGE IS EXPECTED TO INCREASE INTO THE EARLY
EVENING HOURS AS SURFACE LOW AND UPPER LEVEL TROUGH SHIFT EWD INTO
THE REGION.
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 19040.
...IMY
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CrazyC83
- Professional-Met
- Posts: 34001
- Joined: Tue Mar 07, 2006 11:57 pm
- Location: Deep South, for the first time!
MESOSCALE DISCUSSION 2455
NWS STORM PREDICTION CENTER NORMAN OK
0257 PM CST THU DEC 11 2008
AREAS AFFECTED...NC AND EXTREME SERN VA
CONCERNING...TORNADO WATCH 952...953...954...
VALID 112057Z - 112300Z
THE SEVERE WEATHER THREAT FOR TORNADO WATCH
952...953...954...CONTINUES.
RISKS FOR BRIEF ISOLD TORNADOES AND DMGG WINDS HAVE EVOLVED INTO
MULTIPLE BANDS THIS AFTN AND HAVE EXPANDED NWD INTO SERN VA.
HIGHEST TORNADO THREAT THROUGH 00Z WILL EXIST ACROSS THE ERN NC
PIEDMONT AND ADJACENT CSTL PLAINS NEWD INTO THE NORFOLK VA
AREA...GENERALLY EAST AND N OF I-40/85.
SFC LOW HAS MOVED INTO THE MOUNTAINS OF WRN NC AS OF 20Z WITH
STRONGEST PRESSURE FALLS SHIFTING INTO NCNTRL/ECNTRL NC. TRACK OF
THE LOW SHOULD FOLLOW THE FOOTHILLS AND ALONG A STNRY FRONT INTO
SERN VA THROUGH THIS EVENING. LLVL WIND FIELDS HAVE MAINTAINED A
SELY COMPONENT ACROSS THE PIEDMONT/CSTL PLAINS DOWNSTREAM FROM THE
LOW. RALEIGH VWP EXHIBITS NEARLY 350 M2/S2 0-1KM SRH...MORE THAN
SUFFICIENT TO SUPPORT TORNADOES.
MULTIPLE BANDS OF STORMS WITH EMBEDDED LEWPS...BOWS AND
MINI-SUPERCELLS STRUCTURES WILL CONTINUE TO EVOLVE AND MOVE NEWD
ACROSS ERN NC INTO SERN VA THROUGH THIS EVENING. THE SVR THREAT
WILL END QUICKLY FROM SW-NE AS DRIER AIR WRAPS NEWD ABOUT THE SCNTRL
STATES UPR LOW.
..RACY.. 12/11/2008
ATTN...WFO...AKQ...MHX...RAH...ILM...GSP...
LAT...LON 33567850 34827975 35508075 35968014 35867889 36417840
36677802 37247796 37307545 36327510 35587509 34447605
33867734 33637801 33567850
NWS STORM PREDICTION CENTER NORMAN OK
0257 PM CST THU DEC 11 2008
AREAS AFFECTED...NC AND EXTREME SERN VA
CONCERNING...TORNADO WATCH 952...953...954...
VALID 112057Z - 112300Z
THE SEVERE WEATHER THREAT FOR TORNADO WATCH
952...953...954...CONTINUES.
RISKS FOR BRIEF ISOLD TORNADOES AND DMGG WINDS HAVE EVOLVED INTO
MULTIPLE BANDS THIS AFTN AND HAVE EXPANDED NWD INTO SERN VA.
HIGHEST TORNADO THREAT THROUGH 00Z WILL EXIST ACROSS THE ERN NC
PIEDMONT AND ADJACENT CSTL PLAINS NEWD INTO THE NORFOLK VA
AREA...GENERALLY EAST AND N OF I-40/85.
SFC LOW HAS MOVED INTO THE MOUNTAINS OF WRN NC AS OF 20Z WITH
STRONGEST PRESSURE FALLS SHIFTING INTO NCNTRL/ECNTRL NC. TRACK OF
THE LOW SHOULD FOLLOW THE FOOTHILLS AND ALONG A STNRY FRONT INTO
SERN VA THROUGH THIS EVENING. LLVL WIND FIELDS HAVE MAINTAINED A
SELY COMPONENT ACROSS THE PIEDMONT/CSTL PLAINS DOWNSTREAM FROM THE
LOW. RALEIGH VWP EXHIBITS NEARLY 350 M2/S2 0-1KM SRH...MORE THAN
SUFFICIENT TO SUPPORT TORNADOES.
MULTIPLE BANDS OF STORMS WITH EMBEDDED LEWPS...BOWS AND
MINI-SUPERCELLS STRUCTURES WILL CONTINUE TO EVOLVE AND MOVE NEWD
ACROSS ERN NC INTO SERN VA THROUGH THIS EVENING. THE SVR THREAT
WILL END QUICKLY FROM SW-NE AS DRIER AIR WRAPS NEWD ABOUT THE SCNTRL
STATES UPR LOW.
..RACY.. 12/11/2008
ATTN...WFO...AKQ...MHX...RAH...ILM...GSP...
LAT...LON 33567850 34827975 35508075 35968014 35867889 36417840
36677802 37247796 37307545 36327510 35587509 34447605
33867734 33637801 33567850
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