RETAINED OPEN-SOURCE SIGNALS

History, without losing context.

Search and explore the rolling 30-day signal archive. Historical presence shows what sources reported at the time; it is not independent verification.

3,050signals in August30-DAY HISTORICAL INDEX
A2 / HISTORICAL WIRE

August 2026

3,050 results
climate / P5United States

Severe Thunderstorm Warning issued August 29 at 10:56PM CDT until August 29 at 11:15PM CDT by NWS Sioux Falls SD

SVRFSD The National Weather Service in Sioux Falls has issued a * Severe Thunderstorm Warning for... Southwestern Beadle County in east central South Dakota... * Until 1115 PM CDT. * At 1056 PM CDT, a severe thunderstorm was located over Rosehill Dam, or 19 miles southeast of Miller, moving southeast at 30 mph. HAZARD.…

space / P4Europe

EXTENDED WARNING: Geomagnetic K-index of 4 expected

Space Weather Message Code: WARK04 Serial Number: 5410 Issue Time: 2026 Aug 30 0555 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 5409 Valid From: 2026 Aug 28 1409 UTC Now Valid Until: 2026 Aug 30 2359 UTC Warning Condition: Persistence NOAA Space Weather Scale…

climate / P5United States

Severe Thunderstorm Warning issued August 29 at 10:41PM CDT until August 29 at 11:45PM CDT by NWS Aberdeen SD

SVRABR The National Weather Service in Aberdeen has issued a * Severe Thunderstorm Warning for... Northeastern Sully County in central South Dakota... Southwestern Potter County in north central South Dakota... * Until 1145 PM CDT. * At 1041 PM CDT, severe thunderstorms were located along a line from over Sutton Bay Re…

climate / P3United States

Special Weather Statement issued August 29 at 7:38PM AKDT by NWS Anchorage AK

Strong northwesterly winds have developed across Shelikof Strait and the waters around southern Kodiak Island. These winds are resuspending ash from the 1912 Katmai-Novarupta eruption, potentially causing haze and trace amounts of ash accumulation. The villages of Karluk and Larsen Bay are most likely to be impacted. T…

climate / P3United States

Special Weather Statement issued August 29 at 7:38PM AKDT by NWS Anchorage AK

Strong northwesterly winds have developed across Shelikof Strait and the waters around southern Kodiak Island. These winds are resuspending ash from the 1912 Katmai-Novarupta eruption, potentially causing haze and trace amounts of ash accumulation. The villages of Karluk and Larsen Bay are most likely to be impacted. T…

climate / P3United States

Special Weather Statement issued August 29 at 7:38PM AKDT by NWS Anchorage AK

Strong northwesterly winds have developed across Shelikof Strait and the waters around southern Kodiak Island. These winds are resuspending ash from the 1912 Katmai-Novarupta eruption, potentially causing haze and trace amounts of ash accumulation. The villages of Karluk and Larsen Bay are most likely to be impacted. T…