Note:
The expiration time in the watch graphic is amended if the watch is
replaced, cancelled or extended.
Note: Click for
Watch Status Reports.
SEL2
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 672
NWS STORM PREDICTION CENTER NORMAN OK
240 PM CDT WED SEP 19 2007
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
EXTREME EASTERN COLORADO
WESTERN KANSAS
EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 240 PM UNTIL
900 PM CDT.
TORNADOES...HAIL TO 2 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 65 STATUTE
MILES NORTH AND SOUTH OF A LINE FROM 40 MILES SOUTHWEST OF
BURLINGTON COLORADO TO 55 MILES SOUTH SOUTHEAST OF HILL CITY
KANSAS. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED
WATCH OUTLINE UPDATE (WOUS64 KWNS WOU2).
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...SCATTERED THUNDERSTORMS ARE DEVELOPING IN THE WARM
SECTOR /S OF A WARM FRONT S OF I-70/ AS SURFACE TEMPERATURES WARM
INTO THE 80S AND REMOVE CONVECTIVE INHIBITION. EXPECT THE THREAT
FOR ADDITIONAL STORM DEVELOPMENT TO SPREAD NWD ACROSS ERN CO/WRN KS
AS THE WARM FRONT LIFTS NWD THROUGH THE AFTERNOON. MODERATE
INSTABILITY ALONG AND S OF THE BOUNDARY...AND EFFECTIVE BULK SHEAR
OF 35-50 KT...WILL SUPPORT SUPERCELLS CAPABLE OF PRODUCING LARGE
HAIL. A COUPLE OF TORNADOES WILL ALSO BE POSSIBLE THIS AFTERNOON
ALONG THE FRONTAL ZONE...WHERE LOW-LEVEL SHEAR AND MOISTURE WILL BE
MAXIMIZED.
AVIATION...TORNADOES AND 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 25020.
...THOMPSON
SEL2
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 672
NWS STORM PREDICTION CENTER NORMAN OK
240 PM CDT WED SEP 19 2007
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
EXTREME EASTERN COLORADO
WESTERN KANSAS
EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 240 PM UNTIL
900 PM CDT.
TORNADOES...HAIL TO 2 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 65 STATUTE
MILES NORTH AND SOUTH OF A LINE FROM 40 MILES SOUTHWEST OF
BURLINGTON COLORADO TO 55 MILES SOUTH SOUTHEAST OF HILL CITY
KANSAS. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED
WATCH OUTLINE UPDATE (WOUS64 KWNS WOU2).
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...SCATTERED THUNDERSTORMS ARE DEVELOPING IN THE WARM
SECTOR /S OF A WARM FRONT S OF I-70/ AS SURFACE TEMPERATURES WARM
INTO THE 80S AND REMOVE CONVECTIVE INHIBITION. EXPECT THE THREAT
FOR ADDITIONAL STORM DEVELOPMENT TO SPREAD NWD ACROSS ERN CO/WRN KS
AS THE WARM FRONT LIFTS NWD THROUGH THE AFTERNOON. MODERATE
INSTABILITY ALONG AND S OF THE BOUNDARY...AND EFFECTIVE BULK SHEAR
OF 35-50 KT...WILL SUPPORT SUPERCELLS CAPABLE OF PRODUCING LARGE
HAIL. A COUPLE OF TORNADOES WILL ALSO BE POSSIBLE THIS AFTERNOON
ALONG THE FRONTAL ZONE...WHERE LOW-LEVEL SHEAR AND MOISTURE WILL BE
MAXIMIZED.
AVIATION...TORNADOES AND 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 25020.
...THOMPSON
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW2
WW 672 TORNADO CO KS 191940Z - 200200Z
AXIS..65 STATUTE MILES NORTH AND SOUTH OF LINE..
40SW ITR/BURLINGTON CO/ - 55SSE HLC/HILL CITY KS/
..AVIATION COORDS.. 55NM N/S /38N LAA - 52SE HLC/
HAIL SURFACE AND ALOFT..2 INCHES. WIND GUSTS..60 KNOTS.
MAX TOPS TO 500. MEAN STORM MOTION VECTOR 25020.
LAT...LON 39770280 39589944 37709944 37880280
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU2.
Watch 672 Status Report Messages:
STATUS REPORT #2 ON WW 672
VALID 200040Z - 200140Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 45 WSW GCK
TO 40 NW GCK TO 35 S MCK.
..BROYLES..09/20/07
ATTN...WFO...PUB...GLD...DDC...
&&
STATUS REPORT FOR WT 672
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
KSC055-057-063-065-069-083-093-101-135-171-179-195-200140-
KS
. KANSAS COUNTIES INCLUDED ARE
FINNEY FORD GOVE
GRAHAM GRAY HODGEMAN
KEARNY LANE NESS
SCOTT SHERIDAN TREGO
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #1 ON WW 672
VALID 192325Z - 200040Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 45 WSW GCK
TO 55 WNW GCK TO 40 S ITR TO 30 W ITR.
..BROYLES..09/19/07
ATTN...WFO...PUB...GLD...DDC...
&&
STATUS REPORT FOR WT 672
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
COC063-125-200040-
CO
. COLORADO COUNTIES INCLUDED ARE
KIT CARSON YUMA
$$
KSC023-055-057-063-065-069-071-083-093-101-109-135-153-171-179-
181-193-195-199-203-200040-
KS
. KANSAS COUNTIES INCLUDED ARE
CHEYENNE FINNEY FORD
GOVE GRAHAM GRAY
GREELEY HODGEMAN KEARNY
LANE LOGAN NESS
RAWLINS SCOTT SHERIDAN
SHERMAN THOMAS TREGO
WALLACE WICHITA
$$
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 (30%)
|
Probability of 1 or more strong (F2-F5) tornadoes
|
Low (10%)
|
Wind
Probability of 10 or more severe wind events
|
Low (10%)
|
Probability of 1 or more wind events > 65 knots
|
Low (10%)
|
Hail
Probability of 10 or more severe hail events
|
Mod (40%)
|
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 (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.
weather.gov 
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