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 178
NWS Storm Prediction Center Norman OK
355 PM MDT Sun Apr 27 2025
The NWS Storm Prediction Center has issued a
* Tornado Watch for portions of
Far Northeast Colorado
Western Nebraska
Southwest South Dakota
* Effective this Sunday afternoon and evening from 355 PM until
1100 PM MDT.
* Primary threats include...
A couple tornadoes possible
Scattered large hail and isolated very large hail events to 3
inches in diameter possible
Isolated damaging wind gusts to 70 mph possible
SUMMARY...Severe storms including supercells are expected this
evening, with very large hail possible as the main and initial
hazard. Tornado potential is expected to increase toward/after
sunset as additional low-level moistening occurs. Damaging winds are
also possible.
The tornado watch area is approximately along and 70 statute miles
east and west of a line from 85 miles northeast of Chadron NE to 60
miles west southwest of North Platte NE. For a complete depiction of
the watch see the associated watch outline update (WOUS64 KWNS
WOU8).
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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.
&&
AVIATION...Tornadoes and a few severe thunderstorms with hail
surface and aloft to 3 inches. Extreme turbulence and surface wind
gusts to 60 knots. A few cumulonimbi with maximum tops to 500. Mean
storm motion vector 23030.
...Guyer
SEL8
URGENT - IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 178
NWS Storm Prediction Center Norman OK
355 PM MDT Sun Apr 27 2025
The NWS Storm Prediction Center has issued a
* Tornado Watch for portions of
Far Northeast Colorado
Western Nebraska
Southwest South Dakota
* Effective this Sunday afternoon and evening from 355 PM until
1100 PM MDT.
* Primary threats include...
A couple tornadoes possible
Scattered large hail and isolated very large hail events to 3
inches in diameter possible
Isolated damaging wind gusts to 70 mph possible
SUMMARY...Severe storms including supercells are expected this
evening, with very large hail possible as the main and initial
hazard. Tornado potential is expected to increase toward/after
sunset as additional low-level moistening occurs. Damaging winds are
also possible.
The tornado watch area is approximately along and 70 statute miles
east and west of a line from 85 miles northeast of Chadron NE to 60
miles west southwest of North Platte NE. For a complete depiction of
the watch see the associated watch outline update (WOUS64 KWNS
WOU8).
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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.
&&
AVIATION...Tornadoes and a few severe thunderstorms with hail
surface and aloft to 3 inches. Extreme turbulence and surface wind
gusts to 60 knots. A few cumulonimbi with maximum tops to 500. Mean
storm motion vector 23030.
...Guyer
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW8
WW 178 TORNADO CO NE SD 272155Z - 280500Z
AXIS..70 STATUTE MILES EAST AND WEST OF LINE..
85NE CDR/CHADRON NE/ - 60WSW LBF/NORTH PLATTE NE/
..AVIATION COORDS.. 60NM E/W /51ESE RAP - 50WSW LBF/
HAIL SURFACE AND ALOFT..3 INCHES. WIND GUSTS..60 KNOTS.
MAX TOPS TO 500. MEAN STORM MOTION VECTOR 23030.
LAT...LON 43690050 40790040 40790308 43690330
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU8.
Watch 178 Status Report Messages:
STATUS REPORT #2 ON WW 178
VALID 280035Z - 280140Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 580
..WEINMAN..04/28/25
ATTN...WFO...BOU...LBF...CYS...UNR...
&&
STATUS REPORT FOR WT 178
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
COC115-280140-
CO
. COLORADO COUNTIES INCLUDED ARE
SEDGWICK
$$
NEC005-013-029-031-033-045-049-069-075-085-091-101-111-113-117-
123-135-161-171-280140-
NE
. NEBRASKA COUNTIES INCLUDED ARE
ARTHUR BOX BUTTE CHASE
CHERRY CHEYENNE DAWES
DEUEL GARDEN GRANT
HAYES HOOKER KEITH
LINCOLN LOGAN MCPHERSON
MORRILL PERKINS SHERIDAN
THOMAS
$$
SDC007-071-095-102-121-280140-
SD
. SOUTH DAKOTA COUNTIES INCLUDED ARE
BENNETT JACKSON MELLETTE
OGLALA LAKOTA TODD
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #1 ON WW 178
VALID 272330Z - 280040Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..WEINMAN..04/27/25
ATTN...WFO...BOU...LBF...CYS...UNR...
&&
STATUS REPORT FOR WT 178
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
COC115-280040-
CO
. COLORADO COUNTIES INCLUDED ARE
SEDGWICK
$$
NEC005-013-029-031-033-045-049-069-075-085-091-101-111-113-117-
123-135-161-171-280040-
NE
. NEBRASKA COUNTIES INCLUDED ARE
ARTHUR BOX BUTTE CHASE
CHERRY CHEYENNE DAWES
DEUEL GARDEN GRANT
HAYES HOOKER KEITH
LINCOLN LOGAN MCPHERSON
MORRILL PERKINS SHERIDAN
THOMAS
$$
SDC007-071-095-102-121-280040-
SD
. SOUTH DAKOTA COUNTIES INCLUDED ARE
BENNETT JACKSON MELLETTE
OGLALA LAKOTA TODD
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
Probability of 1 or more strong (EF2-EF5) tornadoes
Low (20%)
Wind
Probability of 10 or more severe wind events
Mod (30%)
Probability of 1 or more wind events > 65 knots
Low (20%)
Hail
Probability of 10 or more severe hail events
Mod (50%)
Probability of 1 or more hailstones > 2 inches
Mod (40%)
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% (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.
