Severe Thunderstorm Warning in Pennington County, SD
8/18/2025 3:10:00 PM (UTC) Urgency: Immediate Severity: Severe Certainty: ObservedSevere Thunderstorm Warning in Perkins County, SD
8/18/2025 3:08:00 PM (UTC) Urgency: Immediate Severity: Severe Certainty: ObservedSevere Thunderstorm Warning in Ziebach County, SD
8/18/2025 3:07:00 PM (UTC) Urgency: Immediate Severity: Severe Certainty: ObservedFlood Warning in Deuel County, SD
8/18/2025 3:06:00 PM (UTC) Urgency: Expected Severity: Severe Certainty: LikelyFlood Warning in Brookings County, SD
8/18/2025 2:00:00 PM (UTC) Urgency: Immediate Severity: Severe Certainty: ObservedFlood Warning in Brookings County, SD
8/18/2025 2:00:00 PM (UTC) Urgency: Immediate Severity: Severe Certainty: ObservedFlood Warning in Marshall County, SD
8/18/2025 1:23:00 PM (UTC) Urgency: Expected Severity: Severe Certainty: LikelyFlood Warning in Brown County, SD
8/18/2025 5:43:00 AM (UTC) Urgency: Immediate Severity: Severe Certainty: Observed
