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 334
NWS STORM PREDICTION CENTER NORMAN OK
1125 AM MDT THU MAY 22 2008
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
NORTHEASTERN COLORADO
EXTREME SOUTHWESTERN NEBRASKA
EXTREME SOUTHEASTERN WYOMING
EFFECTIVE THIS THURSDAY MORNING AND EVENING FROM 1125 AM UNTIL
800 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 70 STATUTE
MILES NORTH AND SOUTH OF A LINE FROM 20 MILES WEST SOUTHWEST OF
FORT COLLINS COLORADO TO 30 MILES NORTH NORTHEAST OF BURLINGTON
COLORADO. 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.
DISCUSSION...NUMEROUS THUNDERSTORMS ARE EXPECTED TO DEVELOP ACROSS
NORTHEASTERN CO THIS AFTERNOON...AS STRONG SHORTWAVE TROUGH MOVES
NEWD INTO THE AREA. DEEP LAYER SHEAR AT 60 KT AND MODERATE
INSTABILITY INDICATES NUMEROUS SUPERCELLS ARE LIKELY. STRONG
INSTABILITY WILL SUPPORT HAIL IN EXCESS OF 2 INCHES. THE PRESENCE OF
A WARM FRONT AND STRONG LOW LEVEL SHEAR SUGGEST TORNADOES ARE ALSO
LIKELY. INITIAL STORMS NEAR THE FRONT RANGE WILL GRADUALLY SPREAD
EWD INTO THE EASTERN PLAINS THROUGH THE EARLY EVENING HOURS.
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 17035.
...IMY
SEL4
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 334
NWS STORM PREDICTION CENTER NORMAN OK
1125 AM MDT THU MAY 22 2008
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
NORTHEASTERN COLORADO
EXTREME SOUTHWESTERN NEBRASKA
EXTREME SOUTHEASTERN WYOMING
EFFECTIVE THIS THURSDAY MORNING AND EVENING FROM 1125 AM UNTIL
800 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 70 STATUTE
MILES NORTH AND SOUTH OF A LINE FROM 20 MILES WEST SOUTHWEST OF
FORT COLLINS COLORADO TO 30 MILES NORTH NORTHEAST OF BURLINGTON
COLORADO. 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.
DISCUSSION...NUMEROUS THUNDERSTORMS ARE EXPECTED TO DEVELOP ACROSS
NORTHEASTERN CO THIS AFTERNOON...AS STRONG SHORTWAVE TROUGH MOVES
NEWD INTO THE AREA. DEEP LAYER SHEAR AT 60 KT AND MODERATE
INSTABILITY INDICATES NUMEROUS SUPERCELLS ARE LIKELY. STRONG
INSTABILITY WILL SUPPORT HAIL IN EXCESS OF 2 INCHES. THE PRESENCE OF
A WARM FRONT AND STRONG LOW LEVEL SHEAR SUGGEST TORNADOES ARE ALSO
LIKELY. INITIAL STORMS NEAR THE FRONT RANGE WILL GRADUALLY SPREAD
EWD INTO THE EASTERN PLAINS THROUGH THE EARLY EVENING HOURS.
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 17035.
...IMY
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW4
WW 334 TORNADO CO NE WY 221725Z - 230200Z
AXIS..70 STATUTE MILES NORTH AND SOUTH OF LINE..
20WSW FCL/FORT COLLINS CO/ - 30NNE ITR/BURLINGTON CO/
..AVIATION COORDS.. 60NM N/S /46NW DEN - 23NW GLD/
HAIL SURFACE AND ALOFT..3 INCHES. WIND GUSTS..70 KNOTS.
MAX TOPS TO 500. MEAN STORM MOTION VECTOR 17035.
LAT...LON 41340537 40650205 38630205 39330537
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU4.
Watch 334 Status Report Messages:
STATUS REPORT #8 ON WW 334
VALID 230135Z - 230240Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 40 WNW IML
TO 25 SSE CYS TO 5 NE CYS.
..SMITH..05/23/08
ATTN...WFO...BOU...GLD...PUB...CYS...
&&
STATUS REPORT FOR WT 334
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
COC075-115-123-230240-
CO
. COLORADO COUNTIES INCLUDED ARE
LOGAN SEDGWICK WELD
$$
NEC033-105-230240-
NE
. NEBRASKA COUNTIES INCLUDED ARE
CHEYENNE KIMBALL
$$
WYC021-230240-
WY
. WYOMING COUNTIES INCLUDED ARE
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 #7 ON WW 334
VALID 230040Z - 230140Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 15 SE ITR TO
25 WSW LIC.
..LEVIT..05/23/08
ATTN...WFO...BOU...GLD...PUB...CYS...
&&
STATUS REPORT FOR WT 334
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
COC001-005-014-031-035-039-069-075-087-095-115-121-123-125-
230140-
CO
. COLORADO COUNTIES INCLUDED ARE
ADAMS ARAPAHOE BROOMFIELD
DENVER DOUGLAS ELBERT
LARIMER LOGAN MORGAN
PHILLIPS SEDGWICK WASHINGTON
WELD YUMA
$$
NEC033-105-230140-
NE
. NEBRASKA COUNTIES INCLUDED ARE
CHEYENNE KIMBALL
$$
WYC021-230140-
WY
. WYOMING COUNTIES INCLUDED ARE
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 #6 ON WW 334
VALID 222335Z - 230040Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..LEVIT..05/22/08
ATTN...WFO...BOU...GLD...PUB...CYS...
&&
STATUS REPORT FOR WT 334
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
COC001-005-014-017-031-035-039-063-069-075-087-095-115-121-123-
125-230040-
CO
. COLORADO COUNTIES INCLUDED ARE
ADAMS ARAPAHOE BROOMFIELD
CHEYENNE DENVER DOUGLAS
ELBERT KIT CARSON LARIMER
LOGAN MORGAN PHILLIPS
SEDGWICK WASHINGTON WELD
YUMA
$$
NEC033-105-230040-
NE
. NEBRASKA COUNTIES INCLUDED ARE
CHEYENNE KIMBALL
$$
WYC021-230040-
WY
. WYOMING COUNTIES INCLUDED ARE
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 #5 ON WW 334
VALID 222255Z - 222340Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 975
..LEVIT..05/22/08
ATTN...WFO...BOU...GLD...PUB...CYS...
&&
STATUS REPORT FOR WT 334
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
COC001-005-013-014-017-031-035-039-059-061-063-069-073-075-087-
095-115-121-123-125-222340-
CO
. COLORADO COUNTIES INCLUDED ARE
ADAMS ARAPAHOE BOULDER
BROOMFIELD CHEYENNE DENVER
DOUGLAS ELBERT JEFFERSON
KIOWA KIT CARSON LARIMER
LINCOLN LOGAN MORGAN
PHILLIPS SEDGWICK WASHINGTON
WELD YUMA
$$
NEC033-105-222340-
NE
. NEBRASKA COUNTIES INCLUDED ARE
CHEYENNE KIMBALL
$$
WYC021-222340-
WY
. WYOMING COUNTIES INCLUDED ARE
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 #4 ON WW 334
VALID 222135Z - 222240Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 973
..LEVIT..05/22/08
ATTN...WFO...BOU...GLD...PUB...CYS...
&&
STATUS REPORT FOR WT 334
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
COC001-005-013-014-017-031-035-039-059-061-063-069-073-075-087-
095-115-121-123-125-222240-
CO
. COLORADO COUNTIES INCLUDED ARE
ADAMS ARAPAHOE BOULDER
BROOMFIELD CHEYENNE DENVER
DOUGLAS ELBERT JEFFERSON
KIOWA KIT CARSON LARIMER
LINCOLN LOGAN MORGAN
PHILLIPS SEDGWICK WASHINGTON
WELD YUMA
$$
NEC033-105-222240-
NE
. NEBRASKA COUNTIES INCLUDED ARE
CHEYENNE KIMBALL
$$
WYC021-222240-
WY
. WYOMING COUNTIES INCLUDED ARE
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 #3 ON WW 334
VALID 222030Z - 222140Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..LEVIT..05/22/08
ATTN...WFO...BOU...GLD...PUB...CYS...
&&
STATUS REPORT FOR WT 334
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
COC001-005-013-014-017-031-035-039-059-061-063-069-073-075-087-
095-115-121-123-125-222140-
CO
. COLORADO COUNTIES INCLUDED ARE
ADAMS ARAPAHOE BOULDER
BROOMFIELD CHEYENNE DENVER
DOUGLAS ELBERT JEFFERSON
KIOWA KIT CARSON LARIMER
LINCOLN LOGAN MORGAN
PHILLIPS SEDGWICK WASHINGTON
WELD YUMA
$$
NEC033-105-222140-
NE
. NEBRASKA COUNTIES INCLUDED ARE
CHEYENNE KIMBALL
$$
WYC021-222140-
WY
. WYOMING COUNTIES INCLUDED ARE
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 #2 ON WW 334
VALID 221940Z - 222040Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..LEVIT..05/22/08
ATTN...WFO...BOU...GLD...PUB...CYS...
&&
STATUS REPORT FOR WT 334
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
COC001-005-013-014-017-031-035-039-059-061-063-069-073-075-087-
095-115-121-123-125-222040-
CO
. COLORADO COUNTIES INCLUDED ARE
ADAMS ARAPAHOE BOULDER
BROOMFIELD CHEYENNE DENVER
DOUGLAS ELBERT JEFFERSON
KIOWA KIT CARSON LARIMER
LINCOLN LOGAN MORGAN
PHILLIPS SEDGWICK WASHINGTON
WELD YUMA
$$
NEC033-105-222040-
NE
. NEBRASKA COUNTIES INCLUDED ARE
CHEYENNE KIMBALL
$$
WYC021-222040-
WY
. WYOMING COUNTIES INCLUDED ARE
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 334
VALID 221840Z - 221940Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 971
..LEVIT..05/22/08
ATTN...WFO...BOU...GLD...PUB...CYS...
&&
STATUS REPORT FOR WT 334
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
COC001-005-013-014-017-031-035-039-059-061-063-069-073-075-087-
095-115-121-123-125-221940-
CO
. COLORADO COUNTIES INCLUDED ARE
ADAMS ARAPAHOE BOULDER
BROOMFIELD CHEYENNE DENVER
DOUGLAS ELBERT JEFFERSON
KIOWA KIT CARSON LARIMER
LINCOLN LOGAN MORGAN
PHILLIPS SEDGWICK WASHINGTON
WELD YUMA
$$
NEC033-105-221940-
NE
. NEBRASKA COUNTIES INCLUDED ARE
CHEYENNE KIMBALL
$$
WYC021-221940-
WY
. WYOMING COUNTIES INCLUDED ARE
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
|
High (90%)
|
Probability of 1 or more strong (F2-F5) tornadoes
|
Mod (50%)
|
Wind
Probability of 10 or more severe wind events
|
Mod (30%)
|
Probability of 1 or more wind events > 65 knots
|
Mod (50%)
|
Hail
Probability of 10 or more severe hail events
|
Mod (60%)
|
Probability
of 1 or
more hailstones > 2 inches
|
High (80%)
|
Combined Severe Hail/Wind
Probability of 6 or more combined severe hail/wind events
|
High (>95%)
|
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.