Note:
The expiration time in the watch graphic is amended if the watch is
replaced, cancelled or extended.
Note: Click for
Watch Status Reports.
SEL7
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 767
NWS STORM PREDICTION CENTER NORMAN OK
620 PM CDT MON JUL 28 2008
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
CENTRAL SOUTH DAKOTA
EFFECTIVE THIS MONDAY EVENING FROM 620 PM UNTIL 1100 PM CDT.
TORNADOES...HAIL TO 2 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 50 STATUTE
MILES EAST AND WEST OF A LINE FROM 45 MILES NORTHWEST OF MOBRIDGE
SOUTH DAKOTA TO 40 MILES SOUTH OF PIERRE SOUTH DAKOTA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU7).
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.
DISCUSSION...ISOLATED TORNADIC STORM OVER CENTRAL SD WILL CONTINUE
TO TRACK SOUTHEASTWARD ALONG SURFACE BOUNDARY FOR ANOTHER FEW
HOURS...WHILE OTHER STORMS DEVELOP IN THE REGION. EXTREME
INSTABILITY AND BACKED LOW LEVEL WINDS MAY CONTINUE TO OVERCOME WARM
MID LEVEL TEMPERATURES TO MAINTAIN THREAT OF SUPERCELLS THIS
EVENING.
AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
600. MEAN STORM MOTION VECTOR 32020.
...HART
SEL7
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 767
NWS STORM PREDICTION CENTER NORMAN OK
620 PM CDT MON JUL 28 2008
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
CENTRAL SOUTH DAKOTA
EFFECTIVE THIS MONDAY EVENING FROM 620 PM UNTIL 1100 PM CDT.
TORNADOES...HAIL TO 2 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 50 STATUTE
MILES EAST AND WEST OF A LINE FROM 45 MILES NORTHWEST OF MOBRIDGE
SOUTH DAKOTA TO 40 MILES SOUTH OF PIERRE SOUTH DAKOTA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU7).
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.
DISCUSSION...ISOLATED TORNADIC STORM OVER CENTRAL SD WILL CONTINUE
TO TRACK SOUTHEASTWARD ALONG SURFACE BOUNDARY FOR ANOTHER FEW
HOURS...WHILE OTHER STORMS DEVELOP IN THE REGION. EXTREME
INSTABILITY AND BACKED LOW LEVEL WINDS MAY CONTINUE TO OVERCOME WARM
MID LEVEL TEMPERATURES TO MAINTAIN THREAT OF SUPERCELLS THIS
EVENING.
AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
600. MEAN STORM MOTION VECTOR 32020.
...HART
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW7
WW 767 TORNADO SD 282320Z - 290400Z
AXIS..50 STATUTE MILES EAST AND WEST OF LINE..
45NW MBG/MOBRIDGE SD/ - 40S PIR/PIERRE SD/
..AVIATION COORDS.. 45NM E/W /50SSW BIS - 36S PIR/
HAIL SURFACE AND ALOFT..2 INCHES. WIND GUSTS..60 KNOTS.
MAX TOPS TO 600. MEAN STORM MOTION VECTOR 32020.
LAT...LON 45970005 43799927 43790127 45970212
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU7.
Watch 767 Status Report Messages:
STATUS REPORT #2 ON WW 767
VALID 290240Z - 290340Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 35 ESE PHP
TO 30 E Y22.
..DIAL..07/29/08
ATTN...WFO...ABR...UNR...
&&
STATUS REPORT FOR WT 767
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
SDC017-021-031-041-065-069-075-085-107-117-119-129-290340-
SD
. SOUTH DAKOTA COUNTIES INCLUDED ARE
BUFFALO CAMPBELL CORSON
DEWEY HUGHES HYDE
JONES LYMAN POTTER
STANLEY SULLY WALWORTH
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #1 ON WW 767
VALID 290040Z - 290140Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..LEVIT..07/29/08
ATTN...WFO...ABR...UNR...
&&
STATUS REPORT FOR WT 767
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
SDC017-021-031-041-055-065-069-075-085-107-117-119-129-290140-
SD
. SOUTH DAKOTA COUNTIES INCLUDED ARE
BUFFALO CAMPBELL CORSON
DEWEY HAAKON HUGHES
HYDE JONES LYMAN
POTTER STANLEY SULLY
WALWORTH
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
Note:
Click for Complete Product Text.
Tornadoes
Probability of 2 or more tornadoes
|
Mod (40%)
|
Probability of 1 or more strong (F2-F5) tornadoes
|
Low (20%)
|
Wind
Probability of 10 or more severe wind events
|
Mod (30%)
|
Probability of 1 or more wind events > 65 knots
|
Mod (30%)
|
Hail
Probability of 10 or more severe hail events
|
Mod (30%)
|
Probability
of 1 or
more hailstones > 2 inches
|
Mod (30%)
|
Combined Severe Hail/Wind
Probability of 6 or more combined severe hail/wind events
|
High (70%)
|
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.
weather.gov 
@NWSSPC
