Note:
The expiration time in the watch graphic is amended if the watch is
replaced, cancelled or extended.
Note: Click for
Watch Status Reports.
SEL8
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 288
NWS STORM PREDICTION CENTER NORMAN OK
240 PM MDT WED JUN 9 2010
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
NORTHEASTERN COLORADO
EXTREME NORTHWESTERN KANSAS
WESTERN NEBRASKA
SOUTHEASTERN WYOMING
EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 240 PM UNTIL
900 PM MDT.
TORNADOES...HAIL TO 3 INCHES IN DIAMETER...THUNDERSTORM WIND
GUSTS TO 80 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 25 MILES NORTH NORTHWEST OF
ALLIANCE NEBRASKA TO 10 MILES SOUTHWEST OF LIMON COLORADO. FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU8).
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 286...WW 287...
DISCUSSION...THUNDERSTORMS HAVE RECENTLY DEVELOPED FROM WESTERN NEB
SWWD INTO THE NRN CO MOUNTAINS. VERY MOIST UPSLOPE FLOW...WITH
DEWPOINTS NEAR 60F TO NEAR THE FOOTHILLS...SHOULD BE FAVORABLE FOR
MORE STORMS FORMING THROUGH THE EVENING HOURS. THE COMBINATION OF
MODERATE INSTABILITY AND EFFECTIVE SHEAR NEAR 50 KT WILL BE
FAVORABLE FOR SUPERCELLS WITH VERY LARGE HAIL. TORNADOES ARE ALSO
POSSIBLE...ESPECIALLY ACROSS WRN NEB WHERE BOUNDARY LAYER RH VALUES
ARE HIGHER AND LOW LEVEL SHEAR IS MAXIMIZED. ALSO...ANY STORMS THAT
TURN SEWD WOULD INGEST GREATER SRH AND POSSESS A POTENTIAL FOR A
TORNADO.
AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
500. MEAN STORM MOTION VECTOR 28020.
...IMY
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW8
WW 288 TORNADO CO KS NE WY 092040Z - 100300Z
AXIS..80 STATUTE MILES EAST AND WEST OF LINE..
25NNW AIA/ALLIANCE NE/ - 10SW LIC/LIMON CO/
..AVIATION COORDS.. 70NM E/W /37NE BFF - 55SE DEN/
HAIL SURFACE AND ALOFT..3 INCHES. WIND GUSTS..70 KNOTS.
MAX TOPS TO 500. MEAN STORM MOTION VECTOR 28020.
LAT...LON 42360141 39150230 39150530 42360455
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU8.
Watch 288 Status Report Messages:
STATUS REPORT #2 ON WW 288
VALID 100150Z - 100240Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..BROYLES..06/10/10
ATTN...WFO...BOU...GLD...LBF...CYS...
&&
STATUS REPORT FOR WT 288
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
COC001-005-013-014-031-035-039-059-063-069-073-075-087-095-115-
121-123-125-100240-
CO
. COLORADO COUNTIES INCLUDED ARE
ADAMS ARAPAHOE BOULDER
BROOMFIELD DENVER DOUGLAS
ELBERT JEFFERSON KIT CARSON
LARIMER LINCOLN LOGAN
MORGAN PHILLIPS SEDGWICK
WASHINGTON WELD YUMA
$$
KSC023-100240-
KS
. KANSAS COUNTIES INCLUDED ARE
CHEYENNE
$$
NEC005-007-013-029-033-045-049-057-069-075-101-105-123-135-157-
161-165-100240-
NE
. NEBRASKA COUNTIES INCLUDED ARE
ARTHUR BANNER BOX BUTTE
CHASE CHEYENNE DAWES
DEUEL DUNDY GARDEN
GRANT KEITH KIMBALL
MORRILL PERKINS SCOTTS BLUFF
SHERIDAN SIOUX
$$
WYC015-021-100240-
WY
. WYOMING COUNTIES INCLUDED ARE
GOSHEN LARAMIE
$$
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.
$$
STATUS REPORT #1 ON WW 288
VALID 092235Z - 092340Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..BROYLES..06/09/10
ATTN...WFO...BOU...GLD...LBF...CYS...
&&
STATUS REPORT FOR WT 288
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
COC001-005-013-014-031-035-039-059-063-069-073-075-087-095-115-
121-123-125-092340-
CO
. COLORADO COUNTIES INCLUDED ARE
ADAMS ARAPAHOE BOULDER
BROOMFIELD DENVER DOUGLAS
ELBERT JEFFERSON KIT CARSON
LARIMER LINCOLN LOGAN
MORGAN PHILLIPS SEDGWICK
WASHINGTON WELD YUMA
$$
KSC023-092340-
KS
. KANSAS COUNTIES INCLUDED ARE
CHEYENNE
$$
NEC005-007-013-029-033-045-049-057-069-075-101-105-123-135-157-
161-165-092340-
NE
. NEBRASKA COUNTIES INCLUDED ARE
ARTHUR BANNER BOX BUTTE
CHASE CHEYENNE DAWES
DEUEL DUNDY GARDEN
GRANT KEITH KIMBALL
MORRILL PERKINS SCOTTS BLUFF
SHERIDAN SIOUX
$$
WYC015-021-092340-
WY
. WYOMING COUNTIES INCLUDED ARE
GOSHEN LARAMIE
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
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 (30%)
|
Probability of 1 or more wind events > 65 knots
|
Mod (30%)
|
Hail
Probability of 10 or more severe hail events
|
Mod (60%)
|
Probability
of 1 or
more hailstones > 2 inches
|
High (70%)
|
Combined Severe Hail/Wind
Probability of 6 or more combined severe hail/wind events
|
High (90%)
|
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.