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The Current State of Seismic and Weather Phenomena in the U.S.
Episode 993rd February 2026 • EM Morning Brief • Brian Colburn
00:00:00 00:04:12

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The primary focus of our discourse today revolves around the significant meteorological and geological occurrences affecting various regions of the United States. We commence with an examination of a light wintry mix forecasted to traverse from the upper Ohio Valley into the mid-Atlantic, projected to persist through midweek. Concurrently, we address the implications of an elevated space weather condition following an X 8.1 solar flare, with anticipatory warnings issued regarding potential minor solar radiation storms. In the realm of seismic activity, we report on a magnitude 4.2 earthquake centered near San Ramon, California, which prompted numerous felt reports yet resulted in no substantial damage. Furthermore, we provide insights into winter weather advisories and potential hazardous travel conditions across multiple states, underscoring the necessity for vigilance in navigating these atmospheric challenges.

Takeaways:

  1. The Weather Prediction Center has issued warnings for a light wintry mix affecting the mid-Atlantic region.
  2. California experienced a significant earthquake with a magnitude of 4.2, reported by USGS, causing widespread shaking.
  3. In Alaska, severe blizzard conditions with gusts up to 60 mph are impacting the western Arctic coast.
  4. Potential for heavy rain and flash flooding exists over the central islands of Hawaii this weekend.
  5. Maryland is under a winter weather advisory for light snow and freezing rain, particularly affecting untreated surfaces.
  6. New Jersey may experience minor accumulations of snow and slick bridges due to a light wintry event.

Sources

[NWS Fairbanks — Blizzard Warning | https://forecast.weather.gov/wwamap/wwatxtget.php?cwa=usa&wwa=blizzard+warning]

[NWS Fairbanks — Winter Weather Advisory | https://forecast.weather.gov/wwamap/wwatxtget.php?cwa=usa&wwa=winter+weather+advisory]

[NWS Anchorage — Coastal Waters Advisories | https://forecast.weather.gov/wwamap/wwatxtget.php?cwa=usa&wwa=small+craft+advisory]

[USGS Event — M4.2 San Ramon | https://earthquake.usgs.gov/earthquakes/eventpage/ew1770044470/executive]

[AP — Bay Area quake swarm | https://apnews.com/article/earthquakes-san-ramon-california-san-francisco-bay-area-eb7191538457dd8136cac2603f6ff4b4]

[USGS HVO daily notice | https://volcanoes.usgs.gov/hans-public/notice/DOI-USGS-HVO-2026-02-02T18%3A40%3A21%2B00%3A00]

[WPC Hawaii Extended Discussion | https://www.wpc.ncep.noaa.gov/index.php]

[NWS Indianapolis — Watches/Warnings/Advisories | https://www.weather.gov/ind/]

[NWS ILX HWO for NW Indiana counties | https://forecast.weather.gov/wwamap/wwatxtget.php?cwa=ilx&wwa=hazardous+weather+outlook]

[NWS Jackson (JKL) — Winter Weather Advisory | https://forecast.weather.gov/wwamap/wwatxtget.php?cwa=usa&wwa=winter+weather+advisory]

[NWS JKL — Hazardous Weather Outlook | https://forecast.weather.gov/wwamap/wwatxtget.php?cwa=usa&wwa=hazardous+weather+outlook]

[NWS Baltimore/Washington — WWA page | https://forecast.weather.gov/wwa/phenomena.php?wfo=lwx]

[NWS LWX — Winter Weather Headlines | https://forecast.weather.gov/wwa/phenomena.php?wfo=lwx&phenomena=WW&sig=Y&et=0]

[NWS Marquette — Heavy Freezing Spray Warning | https://forecast.weather.gov/wwamap/wwatxtget.php?cwa=usa&wwa=Heavy+Freezing+Spray+Warning]

[NWS Marquette — HWO | https://forecast.weather.gov/wwamap/wwatxtget.php?cwa=usa&wwa=hazardous+weather+outlook]

[NWS Mount Holly briefing | https://www.weather.gov/media/phi/current_briefing.pdf]

[WPC Short Range Discussion | https://www.wpc.ncep.noaa.gov/index.php]

[NWS Mount Holly briefing | https://www.weather.gov/media/phi/current_briefing.pdf]

[WPC Short Range Discussion | https://www.wpc.ncep.noaa.gov/index.php]

[NWS LWX — WV winter headlines | https://forecast.weather.gov/wwa/phenomena.php?wfo=lwx&phenomena=WW&sig=Y&et=0]

[NWS Charleston WV — WWA/HWO | https://forecast.weather.gov/wwa/phenomena.php?wfo=rlx&phenomena=WW&sig=Y&et=0]

Transcripts

Speaker A:

Good morning.

Speaker A:

,:

Speaker A:

Separately, space weather stays elevated after an X 8.1 solar flare.

Speaker A:

NOAA notes potential minor solar radiation storm conditions S1 through February 5th that can degrade HF radio and affect polar routes geologically.

Speaker A:

A morning swarm near San Ramon rattled California Monday.

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USGS logged a magnitude 4.2 with thousands of felt reports but no major damage and USGS posts routine volcano updates.

Speaker A:

Yellowstone remains at normal green and Kilauea summit eruption is paused.

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Lets run through the states.

Speaker A:

Alaska Blizzard conditions persist along the western Arctic coast with gusts to 60 mph and whiteout visibility.

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The warning runs until Wednesday afternoon.

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Nearby Kivalina and Red Dog Dock remain under a winter weather advisory for blowing snow and reduced visibility through this morning.

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Marine Small craft advisories also continue for parts of the Aleutians and southwest coastal waters.

Speaker A:

Mariners should check local zones for seas of 7 to 12ft and brisk northerlies.

Speaker A:

California A swarm centered near San Ramon produced a magnitude 4.2 Monday morning with shaking felt across the East Bay.

Speaker A:

USGS reports thousands of did you feel it?

Speaker A:

Responses and no serious damage.

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BART conducted precautionary inspections and service was delayed earlier Monday, per media.

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Hawaii USGS says Kilauea's summit eruption remains paused.

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Intermittent glow was observed overnight at the South Vent and inflation tremor continue.

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No significant activity is reported on rift zones.

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WPC highlights potential for heavy rain and possible flash flooding over the western central islands this weekend.

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Keep an eye on local forecasts as we get closer.

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Light snow develops this afternoon and evening across central and northern Indiana, with slick spots possible.

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NWS Indianapolis Highlights a winter weather advisory in effect for parts of the area.

Speaker A:

Totals look light, but the evening drive may be slow.

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Eastern Kentucky faces a winter weather advisory from early afternoon to midnight for 1 to 2 inches of snow with localized higher totals.

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Light icing is also possible in the far southeast tonight into Wednesday.

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MARYLAND for the western Maryland high terrain, a winter weather advisory continues for light snow and pockets of freezing rain.

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Untreated surfaces can glaze farther east toward the I95 corridor.

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Only spotty light precipitation is expected, but any brief icing on bridges is possible.

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Late Upper Michigan Mariners A heavy freezing spray warning and related marine hazards are in effect on Lake Superior Ice accretion on vessels is likely.

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Inland periodic lake effect snow may bring quick reductions in visibility.

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Monitor local advisories.

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New Jersey A light wintry event brushes interior New Jersey tonight into Wednesday morning, mainly northwest of the Turnpike.

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Slick bridges and overpasses are the main issue with minor accumulations.

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Coastal areas see mostly rain.

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Pennsylvania south central and eastern Pa See a light snow rain mix late today into Wednesday with a quick coating possible on colder surfaces.

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North and west of Philadelphia, West Virginia the mountains of eastern West Virginia are under a winter weather advisory for light snow and patchy freezing rain.

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Hazardous travel is most likely over the higher ridges and shaded roadways tonight into early Wednesday.

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All other states have no significant updates in the last 24 hours.

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That's your national and state sweep for Tuesday, February 3rd.

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We'll stay on the advisories and any late breaking hazards.

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Source links are in the show notes below.

Speaker A:

Stay safe.

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