Alert archive / South Dakota / Severe Thunderstorm Warnings in 2026

Severe Thunderstorm Warning 151, NWS Aberdeen, SD

July 7, 20264 counties in South Dakota

NWS Aberdeen, SD issued this severe thunderstorm warning at Jul 7, 2026, 8:36 PM CDT for 4 counties in South Dakota. It was in force for 39 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 7, 2026, 8:36 PM CDT (01:36 UTC)
Expired: Jul 7, 2026, 9:15 PM CDT
In force: 39 min
Issued by: NWS Aberdeen, SD
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Brown County, SD, Clark County, SD, Day County, SD, Spink County, SD

The radar

The Aberdeen radar (KABR), 43 km from the middle of the area, began a volume at 01:40 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jul 7, 5:24 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Aberdeen, SD (KABR), launched 00:00Z, 1.6 hours before the alert went out and 44 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: 1046 J/kg
Mixed-layer CIN: -225 J/kg
Mixed-layer LCL: 930 m above ground
0-6 km bulk shear: 51 kt
0-1 km storm-relative helicity: 432 m²/s²
0-3 km storm-relative helicity: 644 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 7, 7:37 PM CDT, 59 minutes earlier.

Area forecast discussion, Jul 7, 7:37 PM CDT, 59 minutes before

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Hazardous weather outlook, Jul 7, 3:11 AM CDT, 17 hours 25 minutes before

Hazardous Weather Outlook
National Weather Service Aberdeen SD
311 AM CDT Tue Jul 7 2026

MNZ039-046-SDZ003>011-015>023-034-036-037-051-080815-
Traverse-Big Stone-Corson-Campbell-McPherson-Brown-Marshall-Roberts-
Walworth-Edmunds-Day-Dewey-Potter-Faulk-Spink-Clark-Codington-Grant-
Hamlin-Deuel-Sully-Hyde-Hand-Buffalo-
311 AM CDT Tue Jul 7 2026 /211 AM MDT Tue Jul 7 2026/

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

.DAY ONE...Today and tonight.

A Slight Risk for severe thundrestorms (Level 2 of 5) is in place
for storms beginning this morning and this afternoon and continuing
through the evening and overnight periods. All severe threats,
including wind gusts of 60 to 70 miles per hour, hail of 1 inch in
diameter, and tornadoes will be possible. A Slight Risk for Excessive
Rainfall (Level 2 of 4) is in effect for these storms as well.
Multiple rounds of thunderstorms producing heavy rainfall may track
over the same area, leading to the potential for flash flooding. Most
areas, over north central and northeastern South Dakota as well as
western Minnesota are expected to see 1 to 2 inches of rain, with the
heaviest being during the evening hours. Areas that see multiple
rounds of storms may see as much as 2 to 4 inches of rain in total.

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

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be requested. Weather spotters are encouraged
to submit reports to the National Weather Service in Aberdeen. The
public can submit reports on our web page, Facebook page, or our X
feed.

SDZ033-035-045-048-080815-
Stanley-Hughes-Jones-Lyman-
311 AM CDT Tue Jul 7 2026 /211 AM MDT Tue Jul 7 2026/

This Hazardous Weather Outlook is for central South Dakota.

.DAY ONE...Today and tonight.

A Slight Risk for severe thundrestorms (Level 2 of 5) is in place
for storms beginning this morning and this afternoon and continuing
through the evening and overnight periods. All severe threats,
including wind gusts of 60 to 70 miles per hour, hail of 1 inch in
diameter, and tornadoes will be possible. A Marginal Risk for
Excessive Rainfall (Level 1 of 4) is in effect for these storms as
well due to the potential for thunderstorms to produce heavy
rainfall leading to flooding.

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

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be requested. Weather spotters are encouraged
to submit reports to the National Weather Service in Aberdeen. The
public can submit reports on our web page, Facebook page, or our X
feed.

In the hours before

Special weather statement, Jul 7, 7:50 PM CDT, 46 minutes before

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Local storm report, Jul 7, 8:07 PM CDT, 29 minutes before

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Local storm report, Jul 7, 8:11 PM CDT, 25 minutes before

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Local storm report, Jul 7, 8:14 PM CDT, 22 minutes before

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Local storm report, Jul 7, 8:24 PM CDT, 12 minutes before

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Local storm report, Jul 7, 8:31 PM CDT, 5 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 7, 7:17 PM CDT	Severe Thunderstorm Warning	ABR	Campbell, Corson, Walworth	43 min
Jul 7, 7:50 PM CDT	Special Weather Statement	ABR	Walworth	25 min
Jul 7, 8:04 PM CDT	Severe Thunderstorm Warning	ABR	Brown, Day, Marshall	41 min
Jul 7, 8:10 PM CDT	Severe Thunderstorm Warning	ABR	Walworth	35 min
Jul 7, 8:50 PM CDT	Flood Watch	ABR	Campbell, Corson, Edmunds, McPherson, Walworth	3 hr
Jul 7, 8:54 PM CDT	Severe Thunderstorm Warning	ABR	Campbell, Dewey, Walworth	51 min
Jul 7, 8:58 PM CDT	Severe Thunderstorm Warning	ABR	Day, Marshall, Roberts	47 min
Jul 7, 9:12 PM CDT	Severe Thunderstorm Warning Considerable damage threat	ABR	Clark, Codington, Day, Grant, Roberts	48 min
Jul 7, 9:41 PM CDT	Severe Thunderstorm Warning Considerable damage threat	ABR	Day, Grant, Marshall, Roberts	49 min
Jul 7, 10:22 PM CDT	Severe Thunderstorm Warning	ABR	Codington, Grant, Roberts	53 min
Jul 7, 11:00 PM CDT	Special Weather Statement	ABR	Brown	45 min
Jul 7, 11:59 PM CDT	Flood Watch	ABR	Brown, Day, Grant, Marshall, Roberts	5 hr
Jul 8, 12:27 AM CDT	Severe Thunderstorm Warning	ABR	Clark, Day	27 min
Jul 8, 1:11 AM CDT	Areal Flood Warning	ABR	Day	7 hr
Jul 8, 1:33 AM CDT	Areal Flood Warning	ABR	Brown	10 min
Jul 8, 1:43 AM CDT	Flash Flood Warning	ABR	Brown	6 hr
Jul 8, 2:06 AM CDT	Areal Flood Warning	ABR	Brown, Day, Marshall	6 hr
Jul 8, 2:19 AM CDT	River Flood Warning	ABR	Brown	8 hr
Jul 8, 2:51 AM CDT	Areal Flood Warning	ABR	Clark, Codington, Day, Deuel, Grant, Roberts	6 hr
Jul 8, 5:16 PM CDT	River Flood Warning	ABR	Codington	25 hr
Jul 8, 6:39 PM CDT	River Flood Warning	ABR	Codington	9 hr

Nearby

Severe Thunderstorm Warnings in South Dakota, 2026 Every severe thunderstorm warning in 2026

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.