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 337
NWS STORM PREDICTION CENTER NORMAN OK
305 PM CDT THU MAY 22 2008
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
PORTIONS OF SOUTHWESTERN NEBRASKA
EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 305 PM UNTIL
1000 PM CDT.
TORNADOES...HAIL TO 2.5 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 35 STATUTE
MILES NORTH AND SOUTH OF A LINE FROM 35 MILES NORTHWEST OF
IMPERIAL NEBRASKA TO 25 MILES SOUTHEAST OF NORTH PLATTE NEBRASKA.
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.
OTHER WATCH INFORMATION...CONTINUE...WW 334...WW 335...WW 336...
DISCUSSION...DESPITE CLOUDY AND COOL CONDITIONS CURRENTLY LOCATED
ACROSS SWRN NEB...WARM FRONT IS MOVING SLOWLY NWD THROUGH FAR NRN KS
AND MAY MOVE INTO SWRN NEB DURING THE NEXT FEW HOURS. STRONG MID
LEVEL JET WILL SPREAD SUPERCELLS NWD FROM KS. AS THESE STORMS
INTERACT WITH WARM FRONT...TORNADOES WILL BE POSSIBLE.
AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
500. MEAN STORM MOTION VECTOR 18035.
...IMY
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW7
WW 337 TORNADO NE 222005Z - 230300Z
AXIS..35 STATUTE MILES NORTH AND SOUTH OF LINE..
35NW IML/IMPERIAL NE/ - 25SE LBF/NORTH PLATTE NE/
..AVIATION COORDS.. 30NM N/S /42ESE SNY - 23SE LBF/
HAIL SURFACE AND ALOFT..2.5 INCHES. WIND GUSTS..60 KNOTS.
MAX TOPS TO 500. MEAN STORM MOTION VECTOR 18035.
LAT...LON 41380208 41380033 40360033 40360208
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU7.
Watch 337 Status Report Messages:
STATUS REPORT #5 ON WW 337
VALID 230140Z - 230240Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 977.
..PETERS..05/23/08
ATTN...WFO...LBF...
&&
STATUS REPORT FOR WT 337
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
NEC029-049-063-085-101-111-135-230240-
NE
. NEBRASKA COUNTIES INCLUDED ARE
CHASE DEUEL FRONTIER
HAYES KEITH LINCOLN
PERKINS
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #4 ON WW 337
VALID 230045Z - 230140Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..LEVIT..05/23/08
ATTN...WFO...LBF...
&&
STATUS REPORT FOR WT 337
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
NEC029-049-063-085-101-111-135-230140-
NE
. NEBRASKA COUNTIES INCLUDED ARE
CHASE DEUEL FRONTIER
HAYES KEITH LINCOLN
PERKINS
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #3 ON WW 337
VALID 230000Z - 230040Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 976.
..PETERS..05/22/08
ATTN...WFO...LBF...
&&
STATUS REPORT FOR WT 337
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
NEC029-049-063-085-101-111-135-230040-
NE
. NEBRASKA COUNTIES INCLUDED ARE
CHASE DEUEL FRONTIER
HAYES KEITH LINCOLN
PERKINS
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #2 ON WW 337
VALID 222245Z - 222340Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..PETERS..05/22/08
ATTN...WFO...LBF...
&&
STATUS REPORT FOR WT 337
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
NEC029-049-063-085-101-111-135-222340-
NE
. NEBRASKA COUNTIES INCLUDED ARE
CHASE DEUEL FRONTIER
HAYES KEITH LINCOLN
PERKINS
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #1 ON WW 337
VALID 222150Z - 222240Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..LEVIT..05/22/08
ATTN...WFO...LBF...
&&
STATUS REPORT FOR WT 337
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
NEC029-049-063-085-101-111-135-222240-
NE
. NEBRASKA COUNTIES INCLUDED ARE
CHASE DEUEL FRONTIER
HAYES KEITH LINCOLN
PERKINS
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
Note:
Click for Complete Product Text.
Tornadoes
Probability of 2 or more tornadoes
|
Mod (40%)
|
Probability of 1 or more strong (F2-F5) tornadoes
|
Mod (40%)
|
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 (30%)
|
Probability
of 1 or
more hailstones > 2 inches
|
Mod (50%)
|
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.