Note:
The expiration time in the watch graphic is amended if the watch is
replaced, cancelled or extended.
Note: Click for
Watch Status Reports.
SEL4
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 434
NWS STORM PREDICTION CENTER NORMAN OK
205 PM CDT TUE JUN 16 2009
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
PARTS OF SOUTHERN NORTH DAKOTA
PARTS OF NORTHERN SOUTH DAKOTA
EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 205 PM UNTIL
800 PM CDT.
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 80 STATUTE
MILES EAST AND WEST OF A LINE FROM 10 MILES NORTHEAST OF BISMARCK
NORTH DAKOTA TO 50 MILES WEST SOUTHWEST OF WATERTOWN SOUTH
DAKOTA. 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 432...WW 433...
DISCUSSION...SUPERCELLS ARE DEVELOPING IN CYCLONIC CIRCULATION
AROUND UPPER LOW LOCATED W OF BIS. WITH MLCAPES TO 1000 J/KG AND
VEERING SHEAR PROFILES...POTENTIAL WILL CONTINUE FOR SUPERCELLS
INCLUDING LARGE HAIL AND TORNADOES THRU THE AFTERNOON AS ACTIVITY
SHIFTS SLOWLY N AND NE THRU THE WATCH
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
450. MEAN STORM MOTION VECTOR 18025.
...HALES
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW4
WW 434 TORNADO ND SD 161905Z - 170100Z
AXIS..80 STATUTE MILES EAST AND WEST OF LINE..
10NE BIS/BISMARCK ND/ - 50WSW ATY/WATERTOWN SD/
..AVIATION COORDS.. 70NM E/W /7NNE BIS - 48SSE ABR/
HAIL SURFACE AND ALOFT..1.5 INCHES. WIND GUSTS..60 KNOTS.
MAX TOPS TO 450. MEAN STORM MOTION VECTOR 18025.
LAT...LON 46869891 44639645 44639972 46860229
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU4.
Watch 434 Status Report Messages:
STATUS REPORT #6 ON WW 434
VALID 170030Z - 170100Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
WW 434 WILL BE ALLOWED TO EXPIRE AT 17/01Z.
..KERR..06/17/09
ATTN...WFO...BIS...ABR...
&&
STATUS REPORT FOR WT 434
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
NDC015-021-029-037-045-047-051-059-085-170100-
ND
. NORTH DAKOTA COUNTIES INCLUDED ARE
BURLEIGH DICKEY EMMONS
GRANT LAMOURE LOGAN
MCINTOSH MORTON SIOUX
$$
SDC013-021-025-029-031-037-045-049-057-059-089-091-107-115-129-
170100-
SD
. SOUTH DAKOTA COUNTIES INCLUDED ARE
BROWN CAMPBELL CLARK
CODINGTON CORSON DAY
EDMUNDS FAULK HAMLIN
HAND MCPHERSON MARSHALL
POTTER SPINK WALWORTH
$$
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.
$$
STATUS REPORT #5 ON WW 434
VALID 162340Z - 170040Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..KERR..06/16/09
ATTN...WFO...BIS...ABR...
&&
STATUS REPORT FOR WT 434
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
NDC015-021-029-037-045-047-051-059-085-170040-
ND
. NORTH DAKOTA COUNTIES INCLUDED ARE
BURLEIGH DICKEY EMMONS
GRANT LAMOURE LOGAN
MCINTOSH MORTON SIOUX
$$
SDC013-021-025-029-031-037-045-049-057-059-089-091-107-115-129-
170040-
SD
. SOUTH DAKOTA COUNTIES INCLUDED ARE
BROWN CAMPBELL CLARK
CODINGTON CORSON DAY
EDMUNDS FAULK HAMLIN
HAND MCPHERSON MARSHALL
POTTER SPINK 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 #4 ON WW 434
VALID 162245Z - 162340Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
BUT...THE THREAT MAY BE DIMINISHING ENOUGH THE THE WW COULD BE
CANCELLED EARLY. A NEW WW IS NOT ANTICIPATED.
..KERR..06/16/09
ATTN...WFO...BIS...ABR...
&&
STATUS REPORT FOR WT 434
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
NDC015-021-029-037-045-047-051-059-085-162340-
ND
. NORTH DAKOTA COUNTIES INCLUDED ARE
BURLEIGH DICKEY EMMONS
GRANT LAMOURE LOGAN
MCINTOSH MORTON SIOUX
$$
SDC013-021-025-029-031-037-045-049-057-059-089-091-107-115-129-
162340-
SD
. SOUTH DAKOTA COUNTIES INCLUDED ARE
BROWN CAMPBELL CLARK
CODINGTON CORSON DAY
EDMUNDS FAULK HAMLIN
HAND MCPHERSON MARSHALL
POTTER SPINK WALWORTH
$$
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.
$$
STATUS REPORT #3 ON WW 434
VALID 162245Z - 162340Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
BUT THE THREAT MAY BE DIMINISHING ENOUGH THAT THE WW COULD BE
CANCELLED EARLY.
..KERR..06/16/09
ATTN...WFO...BIS...ABR...
&&
STATUS REPORT FOR WT 434
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
NDC015-021-029-037-045-047-051-059-085-162340-
ND
. NORTH DAKOTA COUNTIES INCLUDED ARE
BURLEIGH DICKEY EMMONS
GRANT LAMOURE LOGAN
MCINTOSH MORTON SIOUX
$$
SDC013-021-025-029-031-037-045-049-057-059-089-091-107-115-129-
162340-
SD
. SOUTH DAKOTA COUNTIES INCLUDED ARE
BROWN CAMPBELL CLARK
CODINGTON CORSON DAY
EDMUNDS FAULK HAMLIN
HAND MCPHERSON MARSHALL
POTTER SPINK 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 #2 ON WW 434
VALID 162200Z - 162340Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..KERR..06/16/09
ATTN...WFO...BIS...ABR...
&&
STATUS REPORT FOR WT 434
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
NDC015-021-029-037-045-047-051-059-085-162340-
ND
. NORTH DAKOTA COUNTIES INCLUDED ARE
BURLEIGH DICKEY EMMONS
GRANT LAMOURE LOGAN
MCINTOSH MORTON SIOUX
$$
SDC013-021-025-029-031-037-045-049-057-059-089-091-107-115-129-
162340-
SD
. SOUTH DAKOTA COUNTIES INCLUDED ARE
BROWN CAMPBELL CLARK
CODINGTON CORSON DAY
EDMUNDS FAULK HAMLIN
HAND MCPHERSON MARSHALL
POTTER SPINK WALWORTH
$$
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.
$$
STATUS REPORT #1 ON WW 434
VALID 162030Z - 162140Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 1160
..GARNER..06/16/09
ATTN...WFO...BIS...ABR...
&&
STATUS REPORT FOR WT 434
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
NDC015-021-029-037-045-047-051-059-085-162140-
ND
. NORTH DAKOTA COUNTIES INCLUDED ARE
BURLEIGH DICKEY EMMONS
GRANT LAMOURE LOGAN
MCINTOSH MORTON SIOUX
$$
SDC013-021-025-029-031-037-045-049-057-059-089-091-107-115-129-
162140-
SD
. SOUTH DAKOTA COUNTIES INCLUDED ARE
BROWN CAMPBELL CLARK
CODINGTON CORSON DAY
EDMUNDS FAULK HAMLIN
HAND MCPHERSON MARSHALL
POTTER SPINK 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 (50%)
|
Probability of 1 or more strong (F2-F5) tornadoes
|
Low (20%)
|
Wind
Probability of 10 or more severe wind events
|
Low (20%)
|
Probability of 1 or more wind events > 65 knots
|
Low (20%)
|
Hail
Probability of 10 or more severe hail events
|
Mod (60%)
|
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 (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.