WW 273 SEVERE TSTM SD 042225Z - 050600Z
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 273
NWS Storm Prediction Center Norman OK
525 PM CDT Thu Jun 4 2026
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Central and Eastern South Dakota
* Effective this Thursday afternoon and Friday morning from 525
PM until 100 AM CDT.
* Primary threats include...
Scattered large hail and isolated very large hail events to 2
inches in diameter possible
Scattered damaging wind gusts to 70 mph possible
A tornado or two possible
SUMMARY...Severe storms including a few supercells may develop
through early evening across central and east-central South Dakota,
mostly north of the I-90 corridor. Additional severe storms,
potentially as an organized line of storms, may move into the region
by late evening and the early overnight with damaging wind/hail
potential.
The severe thunderstorm watch area is approximately along and 75
statute miles north and south of a line from 50 miles west southwest
of Pierre SD to 15 miles south southeast of Brookings SD. 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 272...
AVIATION...A few severe thunderstorms with hail surface and aloft to
2 inches. Extreme turbulence and surface wind gusts to 60 knots. A
few cumulonimbi with maximum tops to 500. Mean storm motion vector
27025.
...Guyer
WW 0273 Status Updates
STATUS REPORT ON WW 273
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..LYONS..06/05/26
ATTN...WFO...FSD...ABR...UNR...
STATUS REPORT FOR WS 273
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
SDC003-005-011-015-017-023-025-029-035-039-041-043-049-053-057-
059-065-069-073-075-077-079-085-095-097-101-107-111-115-117-119-
121-123-050240-
SD
. SOUTH DAKOTA COUNTIES INCLUDED ARE
AURORA BEADLE BROOKINGS
BRULE BUFFALO CHARLES MIX
CLARK CODINGTON DAVISON
DEUEL DEWEY DOUGLAS
FAULK GREGORY HAMLIN
HAND HUGHES HYDE
JERAULD JONES KINGSBURY
LAKE LYMAN MELLETTE
MINER MOODY POTTER
SANBORN SPINK STANLEY
SULLY TODD TRIPP
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.
WW 0272 Status Updates
STATUS REPORT ON WW 272
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 60 NNE DGW
TO 50 NW RAP TO 10 SSW DIK.
..LYONS..06/05/26
ATTN...WFO...BYZ...GGW...BIS...UNR...
STATUS REPORT FOR WS 272
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
NDC001-041-050240-
ND
. NORTH DAKOTA COUNTIES INCLUDED ARE
ADAMS HETTINGER
SDC007-033-047-055-071-081-093-102-103-105-137-050240-
SD
. SOUTH DAKOTA COUNTIES INCLUDED ARE
BENNETT CUSTER FALL RIVER
HAAKON JACKSON LAWRENCE
MEADE OGLALA LAKOTA PENNINGTON
PERKINS ZIEBACH
WYC045-050240-
WY
. WYOMING COUNTIES INCLUDED ARE
WESTON
MD 0984 CONCERNING SEVERE THUNDERSTORM WATCH 272...273... FOR PARTS OF SOUTH-CENTRAL SD INTO NORTHWEST/NORTH-CENTRAL NE
Mesoscale Discussion 0984
NWS Storm Prediction Center Norman OK
0947 PM CDT Thu Jun 04 2026
Areas affected...Parts of south-central SD into
northwest/north-central NE
Concerning...Severe Thunderstorm Watch 272...273...
Valid 050247Z - 050445Z
The severe weather threat for Severe Thunderstorm Watch 272, 273
continues.
SUMMARY...A threat for severe gusts, isolated hail, and perhaps a
tornado will continue into late evening.
DISCUSSION...A small but intense storm cluster has evolved this
evening from western Cherry County, NE into Todd County, SD, in the
vicinity of a surface boundary that extends into
south-central/southeast SD. The KLNX VWP shows a notable increase in
0-1 km flow over the last 1-2 hours, which may help to sustain this
cluster as it moves across a corridor of relatively rich low-level
moisture and moderate buoyancy. Severe wind gusts appear to be the
primary hazard, though isolated hail and a brief tornado also cannot
be ruled out with any transient embedded supercells. Some severe
threat may continue just to the south of WW 273, though limited
spatial coverage of the threat across far northern NE may preclude
additional watch issuance.
Farther north, a recent increase in storm coverage/intensity has
been noted west of Pierre, SD, as outflow associated with earlier
western SD convection begins to impinge upon stronger buoyancy.
Stronger updrafts within this developing convection may produce
hail, while a larger-scale threat for severe gusts may evolve if
substantial upscale growth occurs.
..Dean/Guyer.. 06/05/2026
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...FSD...ABR...LBF...UNR...
LAT...LON 44670087 44929952 44849839 44339797 43569816 43069832
42809857 42579914 42479993 42510066 42560121 42610168
42930192 43250146 43490118 44670087
MOST PROBABLE PEAK TORNADO INTENSITY...UP TO 90 MPH
MOST PROBABLE PEAK WIND GUST...65-80 MPH
MOST PROBABLE PEAK HAIL SIZE...1.50-2.50 IN
SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
0757 PM CDT Thu Jun 04 2026
Valid 050100Z - 051200Z
...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF
THE NORTHERN PLAINS...
...SUMMARY...
Severe thunderstorms capable of large to very large hail and
damaging winds are possible this evening across much of South Dakota
into parts of northern Nebraska and south-central Minnesota.
Isolated large hail and severe wind gusts will also be possible in
parts of the central Plains and mid Missouri Valley.
...Northern Plains/Upper Mississippi Valley...
At mid-levels, west-southwesterly flow is evident over much of the
north-central U.S. A shortwave trough is evident on water vapor
imagery over the far western Dakotas. At the surface, a 1002 mb low
is analyzed in eastern Wyoming with a quasi-stationary front
extending northeastward into central South Dakota and north-central
Minnesota. An axis of low-level moisture is located from near the
Black Hills east-northeastward across South Dakota into
south-central Minnesota, where surface dewpoints are in the lower to
mid 60s F. Along and near this axis, the RAP has MLCAPE mostly in
the 1500 to 2500 J/kg range. Scattered strong to severe
thunderstorms are ongoing near the instability axis in the vicinity
of the Black Hills in southwestern South Dakota. The latest 00Z
sounding at Rapid City has 0-6 km shear around 50 knots with 700-500
mb lapse rates near 8 C/km. This will support supercells with large
hail. Hailstones of greater than 2 inches in diameter will be
possible for a few more hours this evening. The wind-damage threat
will likely increase if a cell cluster can become organized and move
into central South Dakota later this evening...see MCD 983. The
southern edge of any cluster could impact parts of northern Nebraska
later this evening.
Further east into eastern South Dakota, a cluster of strong to
severe thunderstorms is ongoing. The 00Z sounding at Aberdeen has
MUCAPE around 1800 J/kg with 0-6 km shear near 40 knots, and a
700-500 mb lapse rate just above 7 C/km. This should support
supercells with large hail early this evening. 0-3 km lapse rates
near 7.5 C/km will also be favorable for severe wind gusts. The
severe threat is expected to increase in southeast and central
Minnesota later this evening, as the storms in eastern South Dakota
move along the instability axis.
...Central Plains/Mid Missouri Valley...
A mid-level shortwave trough is evident on water vapor imagery over
eastern Kansas. At the surface, a moist airmass is in place from
much of central and eastern Kansas northeastward into Iowa, where
surface dewpoints are in the upper 60s to near 70 F. Moderate to
strong instability is analyzed by the RAP from central Kansas into
far western Missouri. Scattered thunderstorms are ongoing along the
northern edge of the stronger instability from northeast Kansas into
southwest Iowa. These storms are being supported by a low-level
speed max of 35 to 45 knots, and could be associated with a threat
for isolated severe wind gusts and hail this evening. As low-level
flow increases from this evening into the overnight period, the
redevelopment of storms may occur over parts of central and eastern
Kansas, where a continued marginal severe threat will be possible.
..Broyles.. 06/05/2026
|
