Note:
The expiration time in the watch graphic is amended if the watch is
replaced, cancelled or extended.
Note: Click for
Watch Status Reports.
SEL1
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 421
NWS Storm Prediction Center Norman OK
625 PM MDT Thu Jun 29 2023
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
West Central Nebraska
* Effective this Thursday night and Friday morning from 625 PM
until 100 AM MDT.
* Primary threats include...
Scattered damaging winds and isolated significant gusts to 75
mph possible
Scattered large hail events to 1.5 inches in diameter possible
SUMMARY...A line of thunderstorms over western Nebraska will track
eastward through the evening, posing a risk of locally damaging wind
gusts and hail.
The severe thunderstorm watch area is approximately along and 90
statute miles east and west of a line from 35 miles west northwest
of Valentine NE to 25 miles west of North Platte NE. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU1).
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.
&&
OTHER WATCH INFORMATION...CONTINUE...WW 419...WW 420...
AVIATION...A few severe thunderstorms with hail surface and aloft to
1.5 inches. Extreme turbulence and surface wind gusts to 65 knots. A
few cumulonimbi with maximum tops to 500. Mean storm motion vector
27030.
...Hart
SEL1
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 421
NWS Storm Prediction Center Norman OK
625 PM MDT Thu Jun 29 2023
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
West Central Nebraska
* Effective this Thursday night and Friday morning from 625 PM
until 100 AM MDT.
* Primary threats include...
Scattered damaging winds and isolated significant gusts to 75
mph possible
Scattered large hail events to 1.5 inches in diameter possible
SUMMARY...A line of thunderstorms over western Nebraska will track
eastward through the evening, posing a risk of locally damaging wind
gusts and hail.
The severe thunderstorm watch area is approximately along and 90
statute miles east and west of a line from 35 miles west northwest
of Valentine NE to 25 miles west of North Platte NE. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU1).
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.
&&
OTHER WATCH INFORMATION...CONTINUE...WW 419...WW 420...
AVIATION...A few severe thunderstorms with hail surface and aloft to
1.5 inches. Extreme turbulence and surface wind gusts to 65 knots. A
few cumulonimbi with maximum tops to 500. Mean storm motion vector
27030.
...Hart
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW1
WW 421 SEVERE TSTM NE 300025Z - 300700Z
AXIS..90 STATUTE MILES EAST AND WEST OF LINE..
35WNW VTN/VALENTINE NE/ - 25W LBF/NORTH PLATTE NE/
..AVIATION COORDS.. 80NM E/W /60WNW ANW - 20W LBF/
HAIL SURFACE AND ALOFT..1.5 INCHES. WIND GUSTS..65 KNOTS.
MAX TOPS TO 500. MEAN STORM MOTION VECTOR 27030.
LAT...LON 43039941 41129943 41120289 43030297
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU1.
Watch 421 Status Report Messages:
STATUS REPORT #5 ON WW 421
VALID 300625Z - 300740Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 25 N IML TO
25 W LBF TO 20 E LBF TO 30 ESE LBF.
..GLEASON..06/30/23
ATTN...WFO...LBF...
&&
STATUS REPORT FOR WS 421
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
NEC111-300740-
NE
. NEBRASKA COUNTIES INCLUDED ARE
LINCOLN
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #4 ON WW 421
VALID 300555Z - 300640Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 30 NW IML TO
25 SSE MHN TO 30 NNW BBW TO 30 NW BUB TO 25 N BUB.
..GLEASON..06/30/23
ATTN...WFO...LBF...
&&
STATUS REPORT FOR WS 421
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
NEC009-041-101-111-113-115-117-300640-
NE
. NEBRASKA COUNTIES INCLUDED ARE
BLAINE CUSTER KEITH
LINCOLN LOGAN LOUP
MCPHERSON
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #3 ON WW 421
VALID 300435Z - 300540Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 10 NNW SNY
TO 35 SSW ANW TO 35 NE VTN.
..SQUITIERI..06/30/23
ATTN...WFO...LBF...
&&
STATUS REPORT FOR WS 421
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
NEC005-009-017-041-101-103-111-113-115-117-149-171-300540-
NE
. NEBRASKA COUNTIES INCLUDED ARE
ARTHUR BLAINE BROWN
CUSTER KEITH KEYA PAHA
LINCOLN LOGAN LOUP
MCPHERSON ROCK THOMAS
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #2 ON WW 421
VALID 300310Z - 300440Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 35 SSW AIA
TO 20 SW MHN TO 25 NW VTN.
..SQUITIERI..06/30/23
ATTN...WFO...LBF...
&&
STATUS REPORT FOR WS 421
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
NEC005-009-017-031-041-049-069-091-101-103-111-113-115-117-149-
171-300440-
NE
. NEBRASKA COUNTIES INCLUDED ARE
ARTHUR BLAINE BROWN
CHERRY CUSTER DEUEL
GARDEN HOOKER KEITH
KEYA PAHA LINCOLN LOGAN
LOUP MCPHERSON ROCK
THOMAS
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #1 ON WW 421
VALID 300210Z - 300340Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 30 SSW AIA
TO 45 WNW MHN TO 60 WNW VTN.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 1350
..SQUITIERI..06/30/23
ATTN...WFO...LBF...
&&
STATUS REPORT FOR WS 421
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
NEC005-009-017-031-041-049-069-075-091-101-103-111-113-115-117-
149-171-300340-
NE
. NEBRASKA COUNTIES INCLUDED ARE
ARTHUR BLAINE BROWN
CHERRY CUSTER DEUEL
GARDEN GRANT HOOKER
KEITH KEYA PAHA LINCOLN
LOGAN LOUP MCPHERSON
ROCK THOMAS
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
Note:
Click for Complete Product Text.
Tornadoes
Probability of 2 or more tornadoes
|
Low (10%)
|
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 (40%)
|
Probability of 1 or more hailstones > 2 inches
|
Low (20%)
|
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.
weather.gov 
@NWSSPC
