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
Severe Thunderstorm Watch Number 644
NWS Storm Prediction Center Norman OK
525 PM MDT Thu Aug 22 2024
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Eastern Colorado
Western Kansas
Far Southwest Nebraska
* Effective this Thursday afternoon and evening from 525 PM until
1100 PM MDT.
* Primary threats include...
Scattered damaging winds and isolated significant gusts to 75
mph possible
Isolated very large hail events to 2 inches in diameter possible
SUMMARY...Thunderstorms should continue to congeal into a cluster
this evening while moving eastward across eastern Colorado into
western Kansas, with mainly a threat for scattered severe/damaging
winds around 60-70 mph. Isolated gusts up to 75 mph appear possible,
along with occasional large hail around 1-1.75 inches in diameter.
The severe thunderstorm watch area is approximately along and 60
statute miles north and south of a line from 5 miles north northwest
of Limon CO to 50 miles east northeast of Goodland KS. For a
complete depiction of the watch see the associated watch outline
update (WOUS64 KWNS WOU4).
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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.
&&
AVIATION...A few severe thunderstorms with hail surface and aloft to
2 inches. Extreme turbulence and surface wind gusts to 65 knots. A
few cumulonimbi with maximum tops to 500. Mean storm motion vector
25025.
...Gleason
SEL4
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 644
NWS Storm Prediction Center Norman OK
525 PM MDT Thu Aug 22 2024
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Eastern Colorado
Western Kansas
Far Southwest Nebraska
* Effective this Thursday afternoon and evening from 525 PM until
1100 PM MDT.
* Primary threats include...
Scattered damaging winds and isolated significant gusts to 75
mph possible
Isolated very large hail events to 2 inches in diameter possible
SUMMARY...Thunderstorms should continue to congeal into a cluster
this evening while moving eastward across eastern Colorado into
western Kansas, with mainly a threat for scattered severe/damaging
winds around 60-70 mph. Isolated gusts up to 75 mph appear possible,
along with occasional large hail around 1-1.75 inches in diameter.
The severe thunderstorm watch area is approximately along and 60
statute miles north and south of a line from 5 miles north northwest
of Limon CO to 50 miles east northeast of Goodland KS. For a
complete depiction of the watch see the associated watch outline
update (WOUS64 KWNS WOU4).
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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.
&&
AVIATION...A few severe thunderstorms with hail surface and aloft to
2 inches. Extreme turbulence and surface wind gusts to 65 knots. A
few cumulonimbi with maximum tops to 500. Mean storm motion vector
25025.
...Gleason
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW4
WW 644 SEVERE TSTM CO KS NE 222325Z - 230500Z
AXIS..60 STATUTE MILES NORTH AND SOUTH OF LINE..
5NNW LIC/LIMON CO/ - 50ENE GLD/GOODLAND KS/
..AVIATION COORDS.. 50NM N/S /53ESE DEN - 36SSW MCK/
HAIL SURFACE AND ALOFT..2 INCHES. WIND GUSTS..65 KNOTS.
MAX TOPS TO 500. MEAN STORM MOTION VECTOR 25025.
LAT...LON 40210371 40500083 38770083 38470371
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU4.
Watch 644 Status Report Messages:
STATUS REPORT #3 ON WW 644
VALID 230325Z - 230440Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 45 S GLD TO
25 E GLD TO 50 SSW MCK.
..SPC..08/23/24
ATTN...WFO...GLD...BOU...
&&
STATUS REPORT FOR WS 644
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
KSC071-109-193-203-230440-
KS
. KANSAS COUNTIES INCLUDED ARE
GREELEY LOGAN THOMAS
WICHITA
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #2 ON WW 644
VALID 230150Z - 230240Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 45 SSE ITR
TO 10 ESE ITR TO 20 NNW ITR TO 25 SSE AKO TO 25 W AKO.
..SPC..08/23/24
ATTN...WFO...GLD...BOU...
&&
STATUS REPORT FOR WS 644
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
COC121-125-230240-
CO
. COLORADO COUNTIES INCLUDED ARE
WASHINGTON YUMA
$$
KSC023-071-109-153-181-193-199-203-230240-
KS
. KANSAS COUNTIES INCLUDED ARE
CHEYENNE GREELEY LOGAN
RAWLINS SHERMAN THOMAS
WALLACE WICHITA
$$
NEC057-087-230240-
NE
. NEBRASKA COUNTIES INCLUDED ARE
DUNDY HITCHCOCK
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #1 ON WW 644
VALID 230035Z - 230140Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 35 NNW LAA
TO 30 ESE LIC TO 20 ENE LIC TO 10 N LIC.
..SPC..08/23/24
ATTN...WFO...GLD...BOU...
&&
STATUS REPORT FOR WS 644
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
COC017-063-121-125-230140-
CO
. COLORADO COUNTIES INCLUDED ARE
CHEYENNE KIT CARSON WASHINGTON
YUMA
$$
KSC023-071-109-153-181-193-199-203-230140-
KS
. KANSAS COUNTIES INCLUDED ARE
CHEYENNE GREELEY LOGAN
RAWLINS SHERMAN THOMAS
WALLACE WICHITA
$$
NEC057-087-230140-
NE
. NEBRASKA COUNTIES INCLUDED ARE
DUNDY HITCHCOCK
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
Note:
Click for Complete Product Text.
Tornadoes
Probability of 2 or more tornadoes
|
Low (<5%)
|
Probability of 1 or more strong (EF2-EF5) tornadoes
|
Low (<2%)
|
Wind
Probability of 10 or more severe wind events
|
Mod (50%)
|
Probability of 1 or more wind events > 65 knots
|
Mod (30%)
|
Hail
Probability of 10 or more severe hail events
|
Mod (30%)
|
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% (EF2-EF5 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 
@NWSSPC
