Note:
The expiration time in the watch graphic is amended if the watch is
replaced, cancelled or extended.
Note: Click for
Watch Status Reports.
SEL3
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 563
NWS Storm Prediction Center Norman OK
845 PM CDT Mon Jul 29 2024
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Northwest Iowa
Northeast Nebraska
Southeast South Dakota
* Effective this Monday night and Tuesday morning from 845 PM
until 200 AM CDT.
* Primary threats include...
Scattered damaging winds and isolated significant gusts to 75
mph likely
Isolated large hail events to 1.5 inches in diameter possible
SUMMARY...A large cluster of thunderstorms over south-central South
Dakota will track east-southeastward, likely posing a continued risk
of damaging wind gusts and some hail.
The severe thunderstorm watch area is approximately along and 60
statute miles north and south of a line from 50 miles west southwest
of Yankton SD to 15 miles east southeast of Storm Lake IA. For a
complete depiction of the watch see the associated watch outline
update (WOUS64 KWNS WOU3).
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 561...WW 562...
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
28035.
...Hart
SEL3
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 563
NWS Storm Prediction Center Norman OK
845 PM CDT Mon Jul 29 2024
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Northwest Iowa
Northeast Nebraska
Southeast South Dakota
* Effective this Monday night and Tuesday morning from 845 PM
until 200 AM CDT.
* Primary threats include...
Scattered damaging winds and isolated significant gusts to 75
mph likely
Isolated large hail events to 1.5 inches in diameter possible
SUMMARY...A large cluster of thunderstorms over south-central South
Dakota will track east-southeastward, likely posing a continued risk
of damaging wind gusts and some hail.
The severe thunderstorm watch area is approximately along and 60
statute miles north and south of a line from 50 miles west southwest
of Yankton SD to 15 miles east southeast of Storm Lake IA. For a
complete depiction of the watch see the associated watch outline
update (WOUS64 KWNS WOU3).
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 561...WW 562...
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
28035.
...Hart
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW3
WW 563 SEVERE TSTM IA NE SD 300145Z - 300700Z
AXIS..60 STATUTE MILES NORTH AND SOUTH OF LINE..
50WSW YKN/YANKTON SD/ - 15ESE SLB/STORM LAKE IA/
..AVIATION COORDS.. 50NM N/S /20ENE ONL - 30W FOD/
HAIL SURFACE AND ALOFT..1.5 INCHES. WIND GUSTS..65 KNOTS.
MAX TOPS TO 500. MEAN STORM MOTION VECTOR 28035.
LAT...LON 43519829 43389496 41659496 41779829
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU3.
Watch 563 Status Report Messages:
STATUS REPORT #2 ON WW 563
VALID 300535Z - 300640Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 25 W TQE TO
20 ENE SUX TO 10 SSE FSD.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 1736.
..GRAMS..07/30/24
ATTN...WFO...FSD...OAX...
&&
STATUS REPORT FOR WS 563
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
IAC021-035-041-093-133-141-149-167-193-300640-
IA
. IOWA COUNTIES INCLUDED ARE
BUENA VISTA CHEROKEE CLAY
IDA MONONA O'BRIEN
PLYMOUTH SIOUX WOODBURY
$$
NEC021-300640-
NE
. NEBRASKA COUNTIES INCLUDED ARE
BURT
$$
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.
$$
STATUS REPORT #1 ON WW 563
VALID 300445Z - 300540Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..KERR..07/30/24
ATTN...WFO...FSD...OAX...
&&
STATUS REPORT FOR WS 563
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
IAC021-035-041-093-119-133-141-149-167-193-300540-
IA
. IOWA COUNTIES INCLUDED ARE
BUENA VISTA CHEROKEE CLAY
IDA LYON MONONA
O'BRIEN PLYMOUTH SIOUX
WOODBURY
$$
NEC003-021-027-039-043-051-107-119-139-167-173-179-300540-
NE
. NEBRASKA COUNTIES INCLUDED ARE
ANTELOPE BURT CEDAR
CUMING DAKOTA DIXON
KNOX MADISON PIERCE
STANTON THURSTON WAYNE
$$
SDC009-027-067-083-125-127-135-300540-
SD
. SOUTH DAKOTA COUNTIES INCLUDED ARE
BON HOMME CLAY HUTCHINSON
LINCOLN TURNER UNION
YANKTON
$$
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
|
High (70%)
|
Probability of 1 or more wind events > 65 knots
|
Mod (60%)
|
Hail
Probability of 10 or more severe hail events
|
Mod (30%)
|
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 (90%)
|
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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