Note:
The expiration time in the watch graphic is amended if the watch is
replaced, cancelled or extended.
Note: Click for
Watch Status Reports.
SEL9
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 479
NWS Storm Prediction Center Norman OK
1120 PM CDT Thu Jun 27 2024
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Eastern South Dakota
* Effective this Thursday night and Friday morning from 1120 PM
until 300 AM CDT.
* Primary threats include...
Scattered damaging wind gusts to 70 mph possible
SUMMARY...A long-lived severe squall line over central South Dakota
will continue east into eastern South Dakota tonight. Scattered
severe gusts 60-70 mph are possible with the more intense embedded
thunderstorm cores and outflow surges in the squall line.
The severe thunderstorm watch area is approximately along and 40
statute miles east and west of a line from 30 miles northeast of
Aberdeen SD to 35 miles south of Huron SD. For a complete depiction
of the watch see the associated watch outline update (WOUS64 KWNS
WOU9).
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 477...WW 478...
AVIATION...A few severe thunderstorms with hail surface and aloft to
0.5 inches. Extreme turbulence and surface wind gusts to 60 knots. A
few cumulonimbi with maximum tops to 500. Mean storm motion vector
27045.
...Smith
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW9
WW 479 SEVERE TSTM SD 280420Z - 280800Z
AXIS..40 STATUTE MILES EAST AND WEST OF LINE..
30NE ABR/ABERDEEN SD/ - 35S HON/HURON SD/
..AVIATION COORDS.. 35NM E/W /26NE ABR - 64WNW FSD/
HAIL SURFACE AND ALOFT..0.5 INCH. WIND GUSTS..60 KNOTS.
MAX TOPS TO 500. MEAN STORM MOTION VECTOR 27045.
LAT...LON 45759715 43879743 43879903 45759881
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU9.
Watch 479 Status Report Messages:
STATUS REPORT #3 ON WW 479
VALID 280725Z - 280800Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 30 WNW MHE
TO 20 SW HON TO 30 ESE HON TO 30 NW BKX.
REMAINING VALID PORTION OF WW 479 MAY BE ALLOWED TO EXPIRE AT
28/08Z.
..KERR..06/28/24
ATTN...WFO...FSD...ABR...
&&
STATUS REPORT FOR WS 479
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
SDC073-077-097-111-280800-
SD
. SOUTH DAKOTA COUNTIES INCLUDED ARE
JERAULD KINGSBURY MINER
SANBORN
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #2 ON WW 479
VALID 280635Z - 280740Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 45 SSW ABR
TO 40 NNE HON TO 30 NE ABR.
..KERR..06/28/24
ATTN...WFO...FSD...ABR...
&&
STATUS REPORT FOR WS 479
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
SDC005-025-037-073-077-097-111-115-280740-
SD
. SOUTH DAKOTA COUNTIES INCLUDED ARE
BEADLE CLARK DAY
JERAULD KINGSBURY MINER
SANBORN SPINK
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #1 ON WW 479
VALID 280545Z - 280640Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..KERR..06/28/24
ATTN...WFO...FSD...ABR...
&&
STATUS REPORT FOR WS 479
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
SDC005-013-025-037-073-077-097-111-115-280640-
SD
. SOUTH DAKOTA COUNTIES INCLUDED ARE
BEADLE BROWN CLARK
DAY JERAULD KINGSBURY
MINER SANBORN SPINK
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
Note:
Click for Complete Product Text.
Tornadoes
Probability of 2 or more tornadoes
|
Low (<5%)
|
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
|
Low (10%)
|
Hail
Probability of 10 or more severe hail events
|
Low (<5%)
|
Probability of 1 or more hailstones > 2 inches
|
Low (<5%)
|
Combined Severe Hail/Wind
Probability of 6 or more combined severe hail/wind events
|
Mod (60%)
|
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.
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