Severe Thunderstorm Warning 6, NWS Sioux Falls, SD

171 
WWUS53 KFSD 022333
SVSFSD

Severe Weather Statement
National Weather Service Sioux Falls SD
633 PM CDT Tue Jun 2 2020

IAC059-030000-
/O.CON.KFSD.SV.W.0006.000000T0000Z-200603T0000Z/
Dickinson IA-
633 PM CDT Tue Jun 2 2020

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 700 PM CDT
FOR DICKINSON COUNTY...

At 633 PM CDT, severe thunderstorms were located along a line
extending from near Orleans to Wahpeton to 6 miles southwest of West
Okoboji, moving east at 35 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

These severe storms will be near...
  Superior around 645 PM CDT.
  Terril around 700 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4326 9538 4327 9539 4350 9539 4350 9492
      4326 9491
TIME...MOT...LOC 2333Z 277DEG 28KT 4348 9508 4338 9518 4331 9527 

HAIL...1.00IN
WIND...60MPH
 
$$

APT

352 
WWUS53 KFSD 022350
SVSFSD

Severe Weather Statement
National Weather Service Sioux Falls SD
650 PM CDT Tue Jun 2 2020

IAC059-030000-
/O.EXP.KFSD.SV.W.0006.000000T0000Z-200603T0000Z/
Dickinson IA-
650 PM CDT Tue Jun 2 2020

...THE SEVERE THUNDERSTORM WARNING FOR DICKINSON COUNTY WILL EXPIRE
AT 700 PM CDT...
            
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore, the warning will be allowed to expire.

A Severe Thunderstorm Watch remains in effect until midnight CDT for
northwestern Iowa.

LAT...LON 4326 9538 4327 9539 4350 9539 4350 9492
      4326 9491
TIME...MOT...LOC 2350Z 278DEG 24KT 4347 9494 4337 9504 4330 9513 

$$

APT

AREA FORECAST DISCUSSION
National Weather Service Sioux Falls SD
337 PM CDT Tue Jun 2 2020

.SHORT TERM...(This Evening through Wednesday)
Issued at 316 PM CDT Tue Jun 2 2020

Another hot and humid day across the region with temperatures in
the upper 80s and upper 90s and heat index near 100 degrees at
some locations. A surface trough, currently centered over our
forecast area, will continue to shift southeastward this evening.
As the boundary moves through, elevated showers and storms will begin
to develop; however,its associated northern boundary will be the
main focus for convection initiation this afternoon and evening.
Atmospheric dynamics early this afternoon show a belt of warm and
humid southerly flow, leading to surface dewpoints in the mid to
upper 60s. Sufficient instability with 0-3km lapse rates
increasing to 7.5-8C/km and MLCAPE around 2000-3000 J/kg will lead
to isolated thunderstorms. Although deep layer shear looks
marginal (~30 knots); a few organized supercells will be
possible. With diurnal heating and 700 mb temperatures ranging
from 12-13C, any convection/thunderstorms ahead of the front will
need to overcome strong capping. Given this environment, the
highest threat for strong to severe threat could potentially be
along Highway 14 in east-central SD/southwest Minnesota late this
afternoon, then spread south-southeast into southwest Minnesota
and northwest Iowa this evening as the front moves through.
Showers and storms move out of the region after midnight as a
surface high pressure settles in.

Relatively quiet weather and slightly cooler temperatures are
expected on Wednesday with a surface high pressure overhead. A weak
and progressive mid-level shortwave moves through the day, bringing
some elevated showers by late evening west of the Missouri
River. High temperatures will generally be in the 80s.

.LONG TERM...(Wednesday Night through Tuesday)
Issued at 316 PM CDT Tue Jun 2 2020

The long term continues with an active zonal flow pattern with weak
systems moving along the flow. Elevated showers and storms will be
possible Wednesday night into Thursday as one of these mid-level
shortwaves moves eastward into the region. The next focus for
scattered thunderstorms will be on Thursday afternoon and evening. A
few storms could become strong to severe with decent deep layer
shear being depicted by most deterministic models. However, low
to mid level lapse rates range from 6 to 7 C/km; with
deeper/stronger instability south of I-90. Will continue to
monitor this period.

Upper-level ridge begins to build across the Rockies Friday into the
weekend, bringing warm and humid conditions across the region.
Different disturbances will continue to ride along the ridge aloft,
increasing precipitation chances across the region into next
week. Concerning temperatures, daytime highs will be in the 80s.
Sunday and Monday look to be the warmest days through the extended
period with temperatures 10 to 15 degrees above average.

----

This concludes my last forecast shift in FSD. It has been an
honor to work with such amazing and talented people. Thank you for
these great years of learning and fellowship.

&&

.AVIATION...(For the 18Z TAFS through 18Z Wednesday afternoon)
Issued at 1213 PM CDT Tue Jun 2 2020

VFR conditions are expected through the period. Scattered
thunderstorms are possible late this afternoon into late evening
east of I-29. A few of these storms could become strong to severe
with large hail, strong winds and frequent cloud-to-ground
lightning. While most of the strong storms will possibly develop
away from the TAFs terminals; TSRA will be possible around KSUX
this evening. Showers and storms should be out of the region by
06-08Z Wednesday.

&&

.FSD WATCHES/WARNINGS/ADVISORIES...
SD...NONE.
MN...NONE.
IA...NONE.
NE...NONE.
&&

SHORT TERM...05
LONG TERM...05
AVIATION...05

Hazardous Weather Outlook
National Weather Service Sioux Falls SD
411 AM CDT Tue Jun 2 2020

IAZ001>003-012>014-020>022-031-032-MNZ071-072-080-081-089-090-097-
098-NEZ013-014-SDZ039-040-054>056-061-062-066-067-070-071-030915-
Lyon-Osceola-Dickinson-Sioux-O'Brien-Clay-Plymouth-Cherokee-
Buena Vista-Woodbury-Ida-Lincoln-Murray-Cottonwood-Nobles-Jackson-
Pipestone-Rock-Dixon-Dakota-Kingsbury-Brookings-Miner-Lake-Moody-
McCook-Minnehaha-Turner-Union-
411 AM CDT Tue Jun 2 2020

This Hazardous Weather Outlook is for northwest Iowa, west central
Iowa, southwest Minnesota, northeast Nebraska, east central South
Dakota and southeast South Dakota.

.DAY ONE...Today and tonight.

Heat index values again climb into the 90s this afternoon. Stay
hydrated and watch for the signs of heat exhaustion and heat stroke
if working outside.

Scattered strong to severe storms are likely this afternoon and
evening. Large hail up to golf ball size, damaging winds, brief
heavy rainfall, and frequent cloud-to-ground lightning are possible
with these storms. Storms exit the region around midnight.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

Strong thunderstorms will be possible on Thursday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

SDZ038-050-052-053-057>060-063>065-068-069-030915-
Beadle-Gregory-Jerauld-Sanborn-Brule-Aurora-Davison-Hanson-
Charles Mix-Douglas-Hutchinson-Bon Homme-Yankton-
411 AM CDT Tue Jun 2 2020

This Hazardous Weather Outlook is for central South Dakota, east
central South Dakota, south central South Dakota and southeast
South Dakota.

.DAY ONE...Today and tonight.

Heat index values again climb into the 90s this afternoon. Stay
hydrated and watch for the signs of heat exhaustion and heat stroke
if working outside.

Isolated strong to severe storms are possible this afternoon and
evening. Large hail up to quarter size, damaging winds, and cloud-
to-ground lightning is possible. Storms exit the region by sunset.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

Strong thunderstorms will be possible on Thursday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
605 PM CDT TUE JUN 2 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0530 PM     TSTM WND GST     2 NE SIBLEY             43.42N 95.72W
06/02/2020  M57 MPH          OSCEOLA            IA   MESONET

&&