Note:
The expiration time in the watch graphic is amended if the watch is
replaced, cancelled or extended.
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Watch Status Reports.
SEL5
URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 335
NWS STORM PREDICTION CENTER NORMAN OK
935 PM CDT FRI JUN 5 2009
THE NWS STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
CENTRAL NEBRASKA
EFFECTIVE THIS FRIDAY NIGHT AND SATURDAY MORNING FROM 935 PM
UNTIL 400 AM CDT.
HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 50
STATUTE MILES NORTH AND SOUTH OF A LINE FROM 15 MILES WEST
SOUTHWEST OF NORTH PLATTE NEBRASKA TO 50 MILES EAST OF GRAND
ISLAND NEBRASKA. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU5).
REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
FAVORABLE FOR 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. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY
DO PRODUCE TORNADOES.
OTHER WATCH INFORMATION...CONTINUE...WW 332...WW 333...WW 334...
DISCUSSION...THUNDERSTORMS ARE INCREASING IN COVERAGE ACROSS CENTRAL
NEB ON NOSE OF STRENGTHENING LOW LEVEL JET. MEANWHILE...SEVERAL
SUPERCELLS ARE TRACKING EAST-SOUTHEASTWARD OUT OF WESTERN NEB. ALL
OF THESE STORMS WILL MAINTAIN A RISK OF LARGE HAIL AND DAMAGING
WINDS FOR SEVERAL MORE HOURS ACROSS THE WATCH AREA.
AVIATION...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 500. MEAN STORM
MOTION VECTOR 27025.
...HART
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW5
WW 335 SEVERE TSTM NE 060235Z - 060900Z
AXIS..50 STATUTE MILES NORTH AND SOUTH OF LINE..
15WSW LBF/NORTH PLATTE NE/ - 50E GRI/GRAND ISLAND NE/
..AVIATION COORDS.. 45NM N/S /11WSW LBF - 51ESE OBH/
HAIL SURFACE AND ALOFT..2 INCHES. WIND GUSTS..60 KNOTS.
MAX TOPS TO 500. MEAN STORM MOTION VECTOR 27025.
LAT...LON 41770094 41689736 40249736 40310094
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU5.
Watch 335 Status Report Messages:
STATUS REPORT #4 ON WW 335
VALID 060740Z - 060840Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 35 SSW EAR
TO 20 NNE EAR TO 20 E BUB.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 957.
..PETERS..06/06/09
ATTN...WFO...GID...LBF...
&&
STATUS REPORT FOR WS 335
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
NEC001-019-035-059-077-079-081-093-099-121-125-143-163-175-185-
060840-
NE
. NEBRASKA COUNTIES INCLUDED ARE
ADAMS BUFFALO CLAY
FILLMORE GREELEY HALL
HAMILTON HOWARD KEARNEY
MERRICK NANCE POLK
SHERMAN VALLEY YORK
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #3 ON WW 335
VALID 060640Z - 060740Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 25 ENE MCK
TO 35 S BBW TO 20 N BBW.
..PETERS..06/06/09
ATTN...WFO...GID...LBF...
&&
STATUS REPORT FOR WS 335
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
NEC001-019-035-041-047-059-073-077-079-081-093-099-121-125-137-
143-163-175-185-060740-
NE
. NEBRASKA COUNTIES INCLUDED ARE
ADAMS BUFFALO CLAY
CUSTER DAWSON FILLMORE
GOSPER GREELEY HALL
HAMILTON HOWARD KEARNEY
MERRICK NANCE PHELPS
POLK SHERMAN VALLEY
YORK
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #2 ON WW 335
VALID 060535Z - 060640Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 956.
..PETERS..06/06/09
ATTN...WFO...GID...LBF...
&&
STATUS REPORT FOR WS 335
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
NEC001-009-019-035-041-047-059-063-071-073-077-079-081-085-093-
099-115-121-125-137-143-163-175-185-060640-
NE
. NEBRASKA COUNTIES INCLUDED ARE
ADAMS BLAINE BUFFALO
CLAY CUSTER DAWSON
FILLMORE FRONTIER GARFIELD
GOSPER GREELEY HALL
HAMILTON HAYES HOWARD
KEARNEY LOUP MERRICK
NANCE PHELPS POLK
SHERMAN VALLEY YORK
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #1 ON WW 335
VALID 060335Z - 060440Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..BROYLES..06/06/09
ATTN...WFO...GID...LBF...
&&
STATUS REPORT FOR WS 335
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
NEC001-009-019-035-041-047-059-063-071-073-077-079-081-085-093-
099-115-121-125-137-143-163-175-185-060440-
NE
. NEBRASKA COUNTIES INCLUDED ARE
ADAMS BLAINE BUFFALO
CLAY CUSTER DAWSON
FILLMORE FRONTIER GARFIELD
GOSPER GREELEY HALL
HAMILTON HAYES HOWARD
KEARNEY LOUP MERRICK
NANCE PHELPS POLK
SHERMAN VALLEY YORK
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
Note:
Click for Complete Product Text.
Tornadoes
Probability of 2 or more tornadoes
|
Low (20%)
|
Probability of 1 or more strong (F2-F5) tornadoes
|
Low (5%)
|
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
|
Mod (40%)
|
Probability
of 1 or
more hailstones > 2 inches
|
Low (20%)
|
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.