Note:
The expiration time in the watch graphic is amended if the watch is
replaced, cancelled or extended.
Note: Click for
Watch Status Reports.
SEL6
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 366
NWS Storm Prediction Center Norman OK
925 PM CDT Fri Jun 23 2023
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Central and eastern South Dakota
* Effective this Friday night and Saturday morning from 925 PM
until 500 AM CDT.
* Primary threats include...
Scattered damaging winds and isolated significant gusts to 75
mph likely
Scattered large hail and isolated very large hail events to 2
inches in diameter possible
A tornado or two possible
SUMMARY...Clusters of storms, including a few supercells initially,
will likely grow upscale into a larger convective system that will
spread eastward across South Dakota through the overnight hours.
The primary threats will be severe outflow gusts to 75 mph and large
hail of 1-2 inches in diameter, though a tornado or two may also
occur with embedded circulations.
The severe thunderstorm watch area is approximately along and 90
statute miles east and west of a line from 55 miles northeast of
Pierre SD to 55 miles south southeast of Chamberlain SD. For a
complete depiction of the watch see the associated watch outline
update (WOUS64 KWNS WOU6).
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 362...WW 363...WW 365...
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 550. Mean storm motion vector
26035.
...Thompson
SEL6
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 366
NWS Storm Prediction Center Norman OK
925 PM CDT Fri Jun 23 2023
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Central and eastern South Dakota
* Effective this Friday night and Saturday morning from 925 PM
until 500 AM CDT.
* Primary threats include...
Scattered damaging winds and isolated significant gusts to 75
mph likely
Scattered large hail and isolated very large hail events to 2
inches in diameter possible
A tornado or two possible
SUMMARY...Clusters of storms, including a few supercells initially,
will likely grow upscale into a larger convective system that will
spread eastward across South Dakota through the overnight hours.
The primary threats will be severe outflow gusts to 75 mph and large
hail of 1-2 inches in diameter, though a tornado or two may also
occur with embedded circulations.
The severe thunderstorm watch area is approximately along and 90
statute miles east and west of a line from 55 miles northeast of
Pierre SD to 55 miles south southeast of Chamberlain SD. For a
complete depiction of the watch see the associated watch outline
update (WOUS64 KWNS WOU6).
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 362...WW 363...WW 365...
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 550. Mean storm motion vector
26035.
...Thompson
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW6
WW 366 SEVERE TSTM SD 240225Z - 241000Z
AXIS..90 STATUTE MILES EAST AND WEST OF LINE..
55NE PIR/PIERRE SD/ - 55SSE 9V9/CHAMBERLAIN SD/
..AVIATION COORDS.. 80NM E/W /44NE PIR - 35NNW ONL/
HAIL SURFACE AND ALOFT..2 INCHES. WIND GUSTS..65 KNOTS.
MAX TOPS TO 550. MEAN STORM MOTION VECTOR 26035.
LAT...LON 44939765 43029712 43020068 44930132
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU6.
Watch 366 Status Report Messages:
STATUS REPORT #2 ON WW 366
VALID 240715Z - 240840Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 45 NE ANW TO
10 NNE 9V9 TO 45 SE MBG.
..MOSIER..06/24/23
ATTN...WFO...FSD...ABR...
&&
STATUS REPORT FOR WS 366
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
SDC003-005-009-015-017-023-025-035-043-049-053-059-061-067-069-
073-077-087-097-107-111-115-135-240840-
SD
. SOUTH DAKOTA COUNTIES INCLUDED ARE
AURORA BEADLE BON HOMME
BRULE BUFFALO CHARLES MIX
CLARK DAVISON DOUGLAS
FAULK GREGORY HAND
HANSON HUTCHINSON HYDE
JERAULD KINGSBURY MCCOOK
MINER POTTER SANBORN
SPINK YANKTON
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #1 ON WW 366
VALID 240355Z - 240440Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..GOSS..06/24/23
ATTN...WFO...FSD...ABR...
&&
STATUS REPORT FOR WS 366
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
SDC003-005-009-015-017-023-025-035-041-043-049-053-059-061-065-
067-069-073-075-077-085-087-097-107-111-115-117-119-135-
240440-
SD
. SOUTH DAKOTA COUNTIES INCLUDED ARE
AURORA BEADLE BON HOMME
BRULE BUFFALO CHARLES MIX
CLARK DAVISON DEWEY
DOUGLAS FAULK GREGORY
HAND HANSON HUGHES
HUTCHINSON HYDE JERAULD
JONES KINGSBURY LYMAN
MCCOOK MINER POTTER
SANBORN SPINK STANLEY
SULLY 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 (20%)
|
Probability of 1 or more strong (EF2-EF5) tornadoes
|
Low (5%)
|
Wind
Probability of 10 or more severe wind events
|
Mod (60%)
|
Probability of 1 or more wind events > 65 knots
|
Mod (60%)
|
Hail
Probability of 10 or more severe hail events
|
Mod (40%)
|
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 (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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