Alert archive / South Dakota / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 67, NWS Aberdeen, SD

July 5, 2017Faulk County, Hand County, Spink County, South Dakota

NWS Aberdeen, SD issued this severe thunderstorm warning at Jul 5, 2017, 6:42 PM CDT for Faulk County, Hand County, Spink County, South Dakota. It was in force for 48 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jul 5, 2017, 6:42 PM CDT (23:42 UTC)
Expired: Jul 5, 2017, 7:30 PM CDT
In force: 48 min
Issued by: NWS Aberdeen, SD
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Faulk County, SD, Hand County, SD, Spink County, SD

The radar

The Aberdeen radar (KABR), 75 km from the middle of the area, began a volume at 23:43 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 12:00Z, 11.7 hours before the alert went out and 258 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 283 J/kg
Mixed-layer CIN: -426 J/kg
Mixed-layer LCL: 1791 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 88 m²/s²
0-3 km storm-relative helicity: 242 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Aberdeen, SD wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 5, 6:14 PM CDT, 28 minutes earlier.

Area forecast discussion, Jul 5, 6:14 PM CDT, 28 minutes before

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Hazardous weather outlook, Jul 5, 3:04 PM CDT, 3 hours 38 minutes before

Hazardous Weather Outlook...UPDATED
National Weather Service Aberdeen SD
304 PM CDT Wed Jul 5 2017

MNZ039-046-SDZ003>011-015>023-033>037-045-048-051-062015-
Traverse-Big Stone-Corson-Campbell-McPherson-Brown-Marshall-
Roberts-Walworth-Edmunds-Day-Dewey-Potter-Faulk-Spink-Clark-
Codington-Grant-Hamlin-Deuel-Stanley-Sully-Hughes-Hyde-Hand-Jones-
Lyman-Buffalo-
304 PM CDT Wed Jul 5 2017 /204 PM MDT Wed Jul 5 2017/

This Hazardous Weather Outlook is for portions of west central
Minnesota, central South Dakota, north central South Dakota, and
northeast South Dakota.

.DAY ONE...This Afternoon and Tonight

Heat indices of 95 to 105 degrees can be expected today.

An isolated thunderstorm may develop late in the afternoon or
early evening and could become strong, although the best chance
for thunderstorms will be after midnight across far northeast
South Dakota and west central Minnesota as a system tracks
southeast out of North Dakota. Stronger storms may produce large
hail or damaging winds.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday

The combination of breezy northerly winds, dry air, and warm
temperatures will produce high to very high fire danger for
counties along and west of the James River on Thursday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed.

In the hours before

Special weather statement, Jul 5, 5:34 PM CDT, 1 hour 8 minutes before

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Special weather statement, Jul 5, 5:51 PM CDT, 51 minutes before

Special Weather Statement
National Weather Service Aberdeen SD
551 PM CDT WED JUL 5 2017

SDZ003-004-009-052330-
Walworth SD-Campbell SD-Corson SD-
551 PM CDT WED JUL 5 2017

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN CORSON...
SOUTHWESTERN CAMPBELL AND NORTHWESTERN WALWORTH COUNTIES UNTIL 630 PM
CDT/530 PM MDT/...

At 551 PM CDT/451 PM MDT/, Doppler radar was tracking a strong
thunderstorm over Mahto, or 9 miles southeast of Mclaughlin, moving
east at 25 mph.

Nickel size hail and wind gusts up to 50 mph will be possible with
this storm.

Locations impacted include...
Wakpala, Mahto and Indian Memorial Rec Area.

LAT...LON 4569 10080 4589 10069 4580 10025 4556 10044
TIME...MOT...LOC 2251Z 291DEG 20KT 4574 10066

Serr

Local storm report, Jul 5, 6:26 PM CDT, 16 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ABERDEEN SD
626 PM CDT WED JUL 5 2017

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

0621 PM     HAIL             2 NW ABERDEEN           45.49N 98.52W
07/05/2017  E1.00 INCH       BROWN              SD   TRAINED SPOTTER

            JUST NORTH OF WYLIE PARK.

&&

KG

Local storm report, Jul 5, 6:29 PM CDT, 13 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ABERDEEN SD
629 PM CDT WED JUL 5 2017

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

0620 PM     HAIL             5 E WAKPALA             45.65N 100.44W
07/05/2017  E0.88 INCH       CORSON             SD   PUBLIC

&&

KG

Local storm report, Jul 5, 6:32 PM CDT, 10 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ABERDEEN SD
632 PM CDT WED JUL 5 2017

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

0626 PM     HAIL             2 N MINA                45.47N 98.75W
07/05/2017  E0.88 INCH       EDMUNDS            SD   EMERGENCY MNGR

&&

KG

Local storm report, Jul 5, 6:34 PM CDT, 8 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ABERDEEN SD
634 PM CDT WED JUL 5 2017

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

0632 PM     TSTM WND DMG     1 N MINA                45.46N 98.76W
07/05/2017                   EDMUNDS            SD   NWS EMPLOYEE

            TWO TREES DOWN. WINDS ESTIMATED TO BE 60 TO
            70 MPH.

&&

KG

The office that day

Everything else NWS Aberdeen, SD issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 4, 11:17 PM CDT	Severe Thunderstorm Warning	ABR	Buffalo, Hand	28 min
Jul 5, 5:12 PM CDT	Special Weather Statement	ABR	Faulk	48 min
Jul 5, 5:34 PM CDT	Special Weather Statement	ABR	Corson	41 min
Jul 5, 5:51 PM CDT	Special Weather Statement	ABR	Campbell	39 min
Jul 5, 6:16 PM CDT	Severe Thunderstorm Warning	ABR	Corson, Dewey	44 min
Jul 5, 6:19 PM CDT	Severe Thunderstorm Warning	ABR	Brown, Edmunds	41 min
Jul 5, 6:32 PM CDT	Severe Thunderstorm Warning	ABR	Brown, Edmunds, Spink	43 min
Jul 5, 6:57 PM CDT	Severe Thunderstorm Warning	ABR	Brown, Day	26 min

Nearby

Severe Thunderstorm Warnings in South Dakota, 2017 Every severe thunderstorm warning in 2017

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.