Note:
The expiration time in the watch graphic is amended if the watch is
replaced, cancelled or extended.
Note: Click for
Watch Status Reports.
SEL0
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 250
NWS STORM PREDICTION CENTER NORMAN OK
430 AM EDT THU APR 28 2011
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
CENTRAL AND EAST CENTRAL GEORGIA
CENTRAL NORTH CAROLINA
CENTRAL AND PARTS OF EASTERN SOUTH CAROLINA
EFFECTIVE THIS THURSDAY MORNING FROM 430 AM UNTIL NOON EDT.
TORNADOES...HAIL TO 1.5 INCHES IN DIAMETER...THUNDERSTORM WIND
GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE
AREAS.
THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 65 STATUTE
MILES EAST AND WEST OF A LINE FROM 45 MILES WEST SOUTHWEST OF
VIDALIA GEORGIA TO 10 MILES NORTHWEST OF ROANOKE RAPIDS NORTH
CAROLINA. 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...THIS TORNADO WATCH REPLACES TORNADO
WATCH NUMBER 248. WATCH NUMBER 248 WILL NOT BE IN EFFECT AFTER
430 AM EDT. CONTINUE...WW 246...WW 247...WW 249...
DISCUSSION...BROKEN PRE-FRONTAL CONVECTIVE BAND WILL CONTINUE TO
MOVE EWD THROUGH THE MORNING AS INDIVIDUAL CELLS MOVE QUICKLY NEWD
ALONG THE LINE. AN INFLUX OF NEAR 70 F SURFACE DEWPOINTS WILL
RESULT IN SUFFICIENT INSTABILITY TO MAINTAIN THE STORMS THROUGH THE
MORNING...WHILE DEEP-LAYER AND LOW-LEVEL SHEAR WILL REMAIN FAVORABLE
FOR EMBEDDED SUPERCELLS/BOWS CAPABLE OF PRODUCING DAMAGING WINDS AND
A FEW TORNADOES.
AVIATION...TORNADOES AND 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 24035.
...THOMPSON
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW0
WW 250 TORNADO GA NC SC 280830Z - 281600Z
AXIS..65 STATUTE MILES EAST AND WEST OF LINE..
45WSW VDI/VIDALIA GA/ - 10NW RZZ/ROANOKE RAPIDS NC/
..AVIATION COORDS.. 55NM E/W /38NW AMG - 61NE RDU/
HAIL SURFACE AND ALOFT..1.5 INCHES. WIND GUSTS..60 KNOTS.
MAX TOPS TO 500. MEAN STORM MOTION VECTOR 24035.
REPLACES WW 248..GA NC SC
LAT...LON 31938419 36547901 36547666 31938197
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU0.
Watch 250 Status Report Messages:
STATUS REPORT #2 ON WW 250
VALID 281230Z - 281340Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 35 NNE ABY
TO 25 WSW AGS TO 30 NNW AGS.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 659
..DIAL..04/28/11
ATTN...WFO...FFC...CHS...CAE...RAH...ILM...
&&
STATUS REPORT FOR WT 250
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
GAC023-031-033-043-073-091-103-107-109-163-165-167-175-209-235-
245-251-267-271-279-283-309-315-281340-
GA
. GEORGIA COUNTIES INCLUDED ARE
BLECKLEY BULLOCH BURKE
CANDLER COLUMBIA DODGE
EFFINGHAM EMANUEL EVANS
JEFFERSON JENKINS JOHNSON
LAURENS MONTGOMERY PULASKI
RICHMOND SCREVEN TATTNALL
TELFAIR TOOMBS TREUTLEN
WHEELER WILCOX
$$
NCC001-007-017-037-051-057-063-065-067-069-077-081-083-085-093-
101-105-123-125-127-135-145-151-153-155-163-165-167-181-183-185-
191-195-281340-
NC
. NORTH CAROLINA COUNTIES INCLUDED ARE
ALAMANCE ANSON BLADEN
CHATHAM CUMBERLAND DAVIDSON
DURHAM EDGECOMBE FORSYTH
FRANKLIN GRANVILLE GUILFORD
HALIFAX HARNETT HOKE
JOHNSTON LEE MONTGOMERY
MOORE NASH ORANGE
PERSON RANDOLPH RICHMOND
ROBESON SAMPSON SCOTLAND
STANLY VANCE WAKE
WARREN WAYNE WILSON
$$
SCC003-005-009-011-015-017-025-027-029-031-033-035-037-039-041-
049-053-055-057-061-063-067-069-071-075-079-081-085-089-
281340-
SC
. SOUTH CAROLINA COUNTIES INCLUDED ARE
AIKEN ALLENDALE BAMBERG
BARNWELL BERKELEY CALHOUN
CHESTERFIELD CLARENDON COLLETON
DARLINGTON DILLON DORCHESTER
EDGEFIELD FAIRFIELD FLORENCE
HAMPTON JASPER KERSHAW
LANCASTER LEE LEXINGTON
MARION MARLBORO NEWBERRY
ORANGEBURG RICHLAND SALUDA
SUMTER WILLIAMSBURG
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #1 ON WW 250
VALID 281055Z - 281140Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 30 NNE ABY
TO 25 WSW AGS TO 30 NNW AGS.
..DIAL..04/28/11
ATTN...WFO...FFC...CHS...CAE...RAH...ILM...
&&
STATUS REPORT FOR WT 250
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
GAC023-031-033-043-073-081-091-093-103-107-109-163-165-167-175-
209-235-245-251-267-271-279-283-309-315-281140-
GA
. GEORGIA COUNTIES INCLUDED ARE
BLECKLEY BULLOCH BURKE
CANDLER COLUMBIA CRISP
DODGE DOOLY EFFINGHAM
EMANUEL EVANS JEFFERSON
JENKINS JOHNSON LAURENS
MONTGOMERY PULASKI RICHMOND
SCREVEN TATTNALL TELFAIR
TOOMBS TREUTLEN WHEELER
WILCOX
$$
NCC001-007-017-037-051-057-063-065-067-069-077-081-083-085-093-
101-105-123-125-127-135-145-151-153-155-163-165-167-181-183-185-
191-195-281140-
NC
. NORTH CAROLINA COUNTIES INCLUDED ARE
ALAMANCE ANSON BLADEN
CHATHAM CUMBERLAND DAVIDSON
DURHAM EDGECOMBE FORSYTH
FRANKLIN GRANVILLE GUILFORD
HALIFAX HARNETT HOKE
JOHNSTON LEE MONTGOMERY
MOORE NASH ORANGE
PERSON RANDOLPH RICHMOND
ROBESON SAMPSON SCOTLAND
STANLY VANCE WAKE
WARREN WAYNE WILSON
$$
SCC003-005-009-011-015-017-025-027-029-031-033-035-037-039-041-
049-053-055-057-061-063-067-069-071-075-079-081-085-089-
281140-
SC
. SOUTH CAROLINA COUNTIES INCLUDED ARE
AIKEN ALLENDALE BAMBERG
BARNWELL BERKELEY CALHOUN
CHESTERFIELD CLARENDON COLLETON
DARLINGTON DILLON DORCHESTER
EDGEFIELD FAIRFIELD FLORENCE
HAMPTON JASPER KERSHAW
LANCASTER LEE LEXINGTON
MARION MARLBORO NEWBERRY
ORANGEBURG RICHLAND SALUDA
SUMTER WILLIAMSBURG
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
Note:
Click for Complete Product Text.
Tornadoes
Probability of 2 or more tornadoes
|
Mod (50%)
|
Probability of 1 or more strong (F2-F5) tornadoes
|
Mod (30%)
|
Wind
Probability of 10 or more severe wind events
|
Mod (40%)
|
Probability of 1 or more wind events > 65 knots
|
Mod (30%)
|
Hail
Probability of 10 or more severe hail events
|
Low (20%)
|
Probability
of 1 or
more hailstones > 2 inches
|
Low (10%)
|
Combined Severe Hail/Wind
Probability of 6 or more combined severe hail/wind events
|
High (80%)
|
For each watch, probabilities for particular events inside the watch
(listed above in each table) are determined by the issuing forecaster.
The "Low" category contains probability values ranging from less than 2%
to 20% (F2-F5 tornadoes), less than 5% to 20% (all other probabilities),
"Moderate" from 30% to 60%, and "High" from 70% to greater than 95%.
High values are bolded and lighter in color to provide awareness of
an increased threat for a particular event.