Alert archive / South Dakota / Severe Thunderstorm Warnings in 2026

Severe Thunderstorm Warning 33, NWS Aberdeen, SD

June 4, 2026Hamlin County, South Dakota

NWS Aberdeen, SD issued this severe thunderstorm warning at Jun 4, 2026, 3:03 PM CDT for Hamlin County, South Dakota. It was in force for 45 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
Jun 4, 2026, 3:03 PM CDT (20:03 UTC)
Expired
Jun 4, 2026, 3:48 PM CDT
In force
45 min
Issued by
NWS Aberdeen, SD
Area
Storm-based polygon
Tornado
Possible
Hail
1.0 in
Wind
60.0 mph

County Hamlin County, SD

The radar

The Sioux Falls radar (KFSD), 126 km from the middle of the area, began a volume at 20:07 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, 8.1 hours before the alert went out and 284 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 2026-06-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 2026-06-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 147 square meters per square second.19395878Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1716 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
147 m²/s²
0-3 km storm-relative helicity
111 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 Jun 4, 1:25 PM CDT, 1 hour 38 minutes earlier.

Area forecast discussion, Jun 4, 1:25 PM CDT, 1 hour 38 minutes before
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Hazardous weather outlook, Jun 4, 1:43 PM CDT, 1 hour 20 minutes before
Hazardous Weather Outlook
National Weather Service Aberdeen SD
143 PM CDT Thu Jun 4 2026

MNZ046-SDZ006>008-010-011-016>023-033>037-045-048-051-051845-
Big Stone-Brown-Marshall-Roberts-Edmunds-Day-Potter-Faulk-Spink-
Clark-Codington-Grant-Hamlin-Deuel-Stanley-Sully-Hughes-Hyde-Hand-
Jones-Lyman-Buffalo-
143 PM CDT Thu Jun 4 2026 /1243 PM MDT Thu Jun 4 2026/

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

.DAY ONE...This afternoon and tonight.

A Slight Risk for severe weather (Level 2 of 5) is in effect for
storms this afternoon and evening. Large Hail of 1-2" in diameter
and damaging wind gusts of 60-70 mph will be the main threats. Can't
rule out tornado development over central South Dakota, and heavy
rainfall producing flooding is also a threat (particularly over areas
that have received substantial rainfall already this week).

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

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.

MNZ039-SDZ003>005-009-015-051845-
Traverse-Corson-Campbell-McPherson-Walworth-Dewey-
143 PM CDT Thu Jun 4 2026 /1243 PM MDT Thu Jun 4 2026/

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

.DAY ONE...This afternoon and tonight.

A Slight Risk for severe weather (Level 2 of 5) is in effect for
storms this afternoon and evening. Large Hail of 1-2" in diameter
and damaging wind gusts of 60-70 mph will be the main threats. Can't
rule out tornado development over central South Dakota, and heavy
rainfall producing flooding is also a threat (particularly over areas
that have received substantial rainfall already this week).

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

In the hours before

Local storm report, Jun 4, 11:05 AM CDT, 3 hours 58 minutes before
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Local storm report, Jun 4, 11:32 AM CDT, 3 hours 31 minutes before
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Local storm report, Jun 4, 11:38 AM CDT, 3 hours 25 minutes before
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Local storm report, Jun 4, 11:52 AM CDT, 3 hours 11 minutes before
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Local storm report, Jun 4, 12:00 PM CDT, 3 hours 3 minutes before
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Special weather statement, Jun 4, 12:58 PM CDT, 2 hours 5 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jun 3, 7:01 PM CDTSevere Thunderstorm WarningABRBrown, Marshall44 min
Jun 3, 7:18 PM CDTSevere Thunderstorm WarningABRCodington, Deuel, Hamlin33 min
Jun 3, 7:26 PM CDTSevere Thunderstorm Warning Considerable damage threatABRLyman49 min
Jun 3, 7:28 PM CDTSpecial Weather StatementABRClark32 min
Jun 3, 7:36 PM CDTSevere Thunderstorm Warning Considerable damage threatABRMarshall, Roberts37 min
Jun 3, 7:47 PM CDTSevere Thunderstorm WarningABRGrant23 min
Jun 3, 7:55 PM CDTSevere Thunderstorm WarningABRCodington, Deuel, Hamlin38 min
Jun 3, 8:04 PM CDTSevere Thunderstorm WarningABRRoberts26 min
Jun 3, 8:10 PM CDTSevere Thunderstorm Warning Considerable damage threatABRLyman24 min
Jun 3, 8:39 PM CDTSpecial Weather StatementABRDeuel36 min
Jun 3, 8:45 PM CDTSpecial Weather StatementABRCodington15 min
Jun 3, 8:50 PM CDTSevere Thunderstorm WarningABRClark, Codington, Hamlin40 min
Jun 3, 9:03 PM CDTSpecial Weather StatementABRClark27 min
Jun 3, 9:35 PM CDTSpecial Weather StatementABRDeuel, Hamlin55 min
Jun 3, 10:24 PM CDTAreal Flood WarningABRCodington, Deuel, Hamlin10 hr
Jun 4, 12:58 PM CDTSpecial Weather StatementABRHand47 min
Jun 4, 3:43 PM CDTSpecial Weather StatementABRGrant17 min
Jun 4, 3:46 PM CDTSpecial Weather StatementABRGrant14 min
Jun 4, 5:59 PM CDTSevere Thunderstorm WarningABRHand, Spink46 min
Jun 4, 6:18 PM CDTSevere Thunderstorm WarningABRHand42 min
Jun 4, 6:20 PM CDTSevere Thunderstorm WarningABRHand40 min
Jun 4, 6:27 PM CDTSevere Thunderstorm Warning Considerable damage threatABRSpink48 min
Jun 4, 6:41 PM CDTSevere Thunderstorm WarningABRHand, Spink49 min
Jun 3, 8:30 PM CDTSpecial Weather StatementABRTraverse30 min
Jun 3, 8:56 PM CDTSpecial Weather StatementABRBig Stone34 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.