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 253
NWS Storm Prediction Center Norman OK
905 PM CDT Thu Jun 10 2021
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
western and central Nebraska
western and central South Dakota
* Effective this Thursday night and Friday morning from 905 PM
until 300 AM CDT.
* Primary threats include...
Widespread damaging winds and isolated significant gusts to 80
mph likely
Scattered large hail likely with isolated very large hail events
to 2 inches in diameter possible
A tornado or two possible
SUMMARY...Storms are expected to increase in coverage with initial
supercells possible, transitioning to a squall line. Large hail,
damaging wind and a couple of tornadoes are possible this evening
into tonight.
The severe thunderstorm watch area is approximately along and 120
statute miles east and west of a line from 75 miles west northwest
of Mobridge SD to 55 miles southeast of Alliance NE. 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 251...WW 252...
AVIATION...A few severe thunderstorms with hail surface and aloft to
2 inches. Extreme turbulence and surface wind gusts to 70 knots. A
few cumulonimbi with maximum tops to 550. Mean storm motion vector
26035.
...Dial
SEL3
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 253
NWS Storm Prediction Center Norman OK
905 PM CDT Thu Jun 10 2021
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
western and central Nebraska
western and central South Dakota
* Effective this Thursday night and Friday morning from 905 PM
until 300 AM CDT.
* Primary threats include...
Widespread damaging winds and isolated significant gusts to 80
mph likely
Scattered large hail likely with isolated very large hail events
to 2 inches in diameter possible
A tornado or two possible
SUMMARY...Storms are expected to increase in coverage with initial
supercells possible, transitioning to a squall line. Large hail,
damaging wind and a couple of tornadoes are possible this evening
into tonight.
The severe thunderstorm watch area is approximately along and 120
statute miles east and west of a line from 75 miles west northwest
of Mobridge SD to 55 miles southeast of Alliance NE. 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 251...WW 252...
AVIATION...A few severe thunderstorms with hail surface and aloft to
2 inches. Extreme turbulence and surface wind gusts to 70 knots. A
few cumulonimbi with maximum tops to 550. Mean storm motion vector
26035.
...Dial
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW3
WW 253 SEVERE TSTM NE SD 110205Z - 110800Z
AXIS..120 STATUTE MILES EAST AND WEST OF LINE..
75WNW MBG/MOBRIDGE SD/ - 55SE AIA/ALLIANCE NE/
..AVIATION COORDS.. 105NM E/W /52N DPR - 48ENE SNY/
HAIL SURFACE AND ALOFT..2 INCHES. WIND GUSTS..70 KNOTS.
MAX TOPS TO 550. MEAN STORM MOTION VECTOR 26035.
LAT...LON 45919938 41469973 41460437 45910437
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU3.
Watch 253 Status Report Messages:
STATUS REPORT #3 ON WW 253
VALID 110740Z - 110840Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 55 ENE SNY
TO 35 WNW MHN TO 50 SE PHP TO 25 SSE PIR TO 40 SE BIS.
..LEITMAN..06/11/21
ATTN...WFO...LBF...CYS...UNR...ABR...
&&
STATUS REPORT FOR WS 253
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
NEC005-009-017-031-075-091-103-113-117-171-110840-
NE
. NEBRASKA COUNTIES INCLUDED ARE
ARTHUR BLAINE BROWN
CHERRY GRANT HOOKER
KEYA PAHA LOGAN MCPHERSON
THOMAS
$$
SDC021-065-085-095-107-119-121-123-129-110840-
SD
. SOUTH DAKOTA COUNTIES INCLUDED ARE
CAMPBELL HUGHES LYMAN
MELLETTE POTTER SULLY
TODD TRIPP WALWORTH
$$
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.
$$
STATUS REPORT #2 ON WW 253
VALID 110640Z - 110740Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 25 NE SNY TO
35 E CDR TO 25 E PHP TO 45 NW MBG.
..LEITMAN..06/11/21
ATTN...WFO...LBF...CYS...UNR...ABR...
&&
STATUS REPORT FOR WS 253
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
NEC005-009-017-031-069-075-091-103-113-117-161-171-110740-
NE
. NEBRASKA COUNTIES INCLUDED ARE
ARTHUR BLAINE BROWN
CHERRY GARDEN GRANT
HOOKER KEYA PAHA LOGAN
MCPHERSON SHERIDAN THOMAS
$$
SDC007-021-031-041-065-071-075-085-095-107-117-119-121-123-129-
110740-
SD
. SOUTH DAKOTA COUNTIES INCLUDED ARE
BENNETT CAMPBELL CORSON
DEWEY HUGHES JACKSON
JONES LYMAN MELLETTE
POTTER STANLEY SULLY
TODD TRIPP WALWORTH
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #1 ON WW 253
VALID 110555Z - 110640Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 20 WNW SNY
TO 15 ESE CDR TO 35 WSW PHP TO 55 S Y22 TO 30 ENE Y22.
..LEITMAN..06/11/21
ATTN...WFO...LBF...CYS...UNR...ABR...
&&
STATUS REPORT FOR WS 253
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
NEC005-009-013-017-031-045-069-075-091-103-113-117-123-161-171-
110640-
NE
. NEBRASKA COUNTIES INCLUDED ARE
ARTHUR BLAINE BOX BUTTE
BROWN CHERRY DAWES
GARDEN GRANT HOOKER
KEYA PAHA LOGAN MCPHERSON
MORRILL SHERIDAN THOMAS
$$
SDC007-021-031-041-055-065-071-075-085-095-102-107-117-119-121-
123-129-137-110640-
SD
. SOUTH DAKOTA COUNTIES INCLUDED ARE
BENNETT CAMPBELL CORSON
DEWEY HAAKON HUGHES
JACKSON JONES LYMAN
MELLETTE OGLALA LAKOTA POTTER
STANLEY SULLY TODD
TRIPP WALWORTH ZIEBACH
$$
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 (10%)
|
Wind
Probability of 10 or more severe wind events
|
High (80%)
|
Probability of 1 or more wind events > 65 knots
|
High (70%)
|
Hail
Probability of 10 or more severe hail events
|
Mod (60%)
|
Probability of 1 or more hailstones > 2 inches
|
Mod (50%)
|
Combined Severe Hail/Wind
Probability of 6 or more combined severe hail/wind events
|
High (>95%)
|
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
