Alert archive / South Dakota / Severe Thunderstorm Warnings in 2026

Severe Thunderstorm Warning 145, NWS Aberdeen, SD

July 7, 2026Brown County, Marshall County, South Dakota

NWS Aberdeen, SD issued this severe thunderstorm warning at Jul 7, 2026, 10:29 AM CDT for Brown County, Marshall County, South Dakota. It was in force for 46 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, 10:29 AM CDT (15:29 UTC)
Expired
Jul 7, 2026, 11:15 AM CDT
In force
46 min
Issued by
NWS Aberdeen, SD
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Brown County, SD, Marshall County, SD

The radar

The Aberdeen radar (KABR), 42 km from the middle of the area, began a volume at 15:31 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

Minneapolis, MN (KMPX), launched 12:00Z, 3.5 hours before the alert went out and 354 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-pSkew-T log-p diagram, Minneapolis, MN at 12:00Z on 2026-07-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 121 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 12:00Z on 2026-07-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -9 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
121 J/kg
Mixed-layer CIN
-243 J/kg
Mixed-layer LCL
1118 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
-9 m²/s²
0-3 km storm-relative helicity
157 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, 6:45 AM CDT, 3 hours 44 minutes earlier.

Area forecast discussion, Jul 7, 6:45 AM CDT, 3 hours 44 minutes before
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Hazardous weather outlook, Jul 7, 3:11 AM CDT, 7 hours 18 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, 7:21 AM CDT, 3 hours 8 minutes before
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Special weather statement, Jul 7, 7:24 AM CDT, 3 hours 5 minutes before
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Local storm report, Jul 7, 9:32 AM CDT, 57 minutes before
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Special weather statement, Jul 7, 9:38 AM CDT, 51 minutes before
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Local storm report, Jul 7, 10:20 AM CDT, 9 minutes before
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Local storm report, Jul 7, 10:21 AM CDT, 8 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jul 6, 9:30 PM CDTSevere Thunderstorm WarningABRRoberts45 min
Jul 6, 9:59 PM CDTSevere Thunderstorm WarningABRGrant, Roberts46 min
Jul 6, 10:42 PM CDTSevere Thunderstorm WarningABRCodington, Grant, Roberts48 min
Jul 6, 11:28 PM CDTSevere Thunderstorm WarningABRCodington, Deuel, Grant47 min
Jul 7, 12:15 AM CDTSpecial Weather StatementABRDeuel, Hamlin90 min
Jul 7, 7:21 AM CDTSpecial Weather StatementABRCampbell24 min
Jul 7, 7:24 AM CDTSpecial Weather StatementABRDewey36 min
Jul 7, 8:53 AM CDTSevere Thunderstorm WarningABRCampbell, Edmunds, McPherson, Walworth26 min
Jul 7, 8:59 AM CDTSevere Thunderstorm WarningABREdmunds, McPherson31 min
Jul 7, 9:36 AM CDTSevere Thunderstorm WarningABREdmunds, McPherson39 min
Jul 7, 9:38 AM CDTSpecial Weather StatementABREdmunds37 min
Jul 7, 6:02 PM CDTSevere Thunderstorm WarningABRCampbell, McPherson26 min
Jul 7, 6:27 PM CDTSevere Thunderstorm WarningABRCampbell, Corson20 min
Jul 6, 9:04 PM CDTSevere Thunderstorm WarningABRTraverse41 min

Nearby

Severe Thunderstorm Warnings in South Dakota, 2026Every 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.