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 621
NWS Storm Prediction Center Norman OK
1130 PM CDT Tue Aug 13 2024
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Central and south-central Nebraska
* Effective this Tuesday night and Wednesday morning from 1130 PM
until 700 AM CDT.
* Primary threats include...
Isolated damaging wind gusts to 70 mph possible
Isolated large hail events to 1.5 inches in diameter possible
SUMMARY...A cluster of occasionally severe thunderstorms -- which
produced a 60-kt at MCK during the last half hour -- will maintain
severe potential into the watch area before weakening later tonight.
Isolated large hail also may occur, either in the main MCS or in
precursory convection.
The severe thunderstorm watch area is approximately along and 50
statute miles east and west of a line from 50 miles south southwest
of Kearney NE to 30 miles northeast of Broken Bow 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 620...
AVIATION...A few severe thunderstorms with hail surface and aloft to
1.5 inches. Extreme turbulence and surface wind gusts to 60 knots. A
few cumulonimbi with maximum tops to 550. Mean storm motion vector
27030.
...Edwards
SEL1
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 621
NWS Storm Prediction Center Norman OK
1130 PM CDT Tue Aug 13 2024
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Central and south-central Nebraska
* Effective this Tuesday night and Wednesday morning from 1130 PM
until 700 AM CDT.
* Primary threats include...
Isolated damaging wind gusts to 70 mph possible
Isolated large hail events to 1.5 inches in diameter possible
SUMMARY...A cluster of occasionally severe thunderstorms -- which
produced a 60-kt at MCK during the last half hour -- will maintain
severe potential into the watch area before weakening later tonight.
Isolated large hail also may occur, either in the main MCS or in
precursory convection.
The severe thunderstorm watch area is approximately along and 50
statute miles east and west of a line from 50 miles south southwest
of Kearney NE to 30 miles northeast of Broken Bow 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 620...
AVIATION...A few severe thunderstorms with hail surface and aloft to
1.5 inches. Extreme turbulence and surface wind gusts to 60 knots. A
few cumulonimbi with maximum tops to 550. Mean storm motion vector
27030.
...Edwards
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW1
WW 621 SEVERE TSTM NE 140430Z - 141200Z
AXIS..50 STATUTE MILES EAST AND WEST OF LINE..
50SSW EAR/KEARNEY NE/ - 30NE BBW/BROKEN BOW NE/
..AVIATION COORDS.. 45NM E/W /57E MCK - 45WNW OBH/
HAIL SURFACE AND ALOFT..1.5 INCHES. WIND GUSTS..60 KNOTS.
MAX TOPS TO 550. MEAN STORM MOTION VECTOR 27030.
LAT...LON 40050031 41730019 41739825 40059842
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU1.
Watch 621 Status Report Messages:
STATUS REPORT #1 ON WW 621
VALID 140545Z - 140630Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 25 ESE MCK
TO 30 SW EAR TO 5 SSW BUB.
..SMITH..08/14/24
ATTN...WFO...GID...LBF...
&&
STATUS REPORT FOR WS 621
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
NEC001-019-061-065-077-079-083-093-099-137-163-175-181-140630-
NE
. NEBRASKA COUNTIES INCLUDED ARE
ADAMS BUFFALO FRANKLIN
FURNAS GREELEY HALL
HARLAN HOWARD KEARNEY
PHELPS SHERMAN VALLEY
WEBSTER
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
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 (30%)
|
Probability of 1 or more wind events > 65 knots
|
Low (20%)
|
Hail
Probability of 10 or more severe hail events
|
Low (20%)
|
Probability of 1 or more hailstones > 2 inches
|
Low (10%)
|
Combined Severe Hail/Wind
Probability of 6 or more combined severe hail/wind events
|
Mod (50%)
|
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 
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