Episode 60
Flash Flood Risks and Winter Storm Watches Explained
The salient point of today's discourse revolves around the imminent weather developments across the United States, particularly emphasizing the marginal risk of excessive rainfall along the central Gulf coast and the anticipated atmospheric river affecting the Pacific Northwest. I elucidate the potential for localized flash flooding in coastal regions due to persistent showers. Concurrently, I provide updates regarding winter weather advisories and warnings for several states, including Michigan and Colorado, where hazardous travel is expected due to heavy snowfall. Additionally, I draw attention to the coastal flood advisories in various regions, underscoring the need for vigilance as high tides may lead to minor inundation. This comprehensive weather briefing serves to prepare our audience for the diverse meteorological challenges that lie ahead.
Takeaways:
- The Weather Prediction Center has issued a Day One marginal risk for excessive rainfall along the central Gulf Coast, indicating possible weather-related impacts.
- Localized flash flooding is anticipated in areas where persistent showers develop near coastal regions, necessitating vigilance among residents.
- A strong atmospheric river event is forecasted for the Pacific Northwest early next week, which may influence local weather patterns significantly.
- Winter weather advisories remain active across multiple states, including Alaska and Michigan, highlighting ongoing hazardous conditions due to snow and freezing temperatures.
- Coastal flood advisories have been issued for various regions, including North Carolina and Oregon, in response to high tide events that may lead to minor inundation.
- Overall, careful monitoring of weather patterns and advisories is essential as conditions continue to evolve across the United States.
Sources
[WPC Day 1 ERO | https://www.wpc.ncep.noaa.gov/qpf/ero.php?day=1&opt=curr]
[NWS Mobile | https://www.weather.gov/mob/].
NCEP Weather Prediction Center+1]
[NWS Anchorage | https://www.weather.gov/afc].
[NWS LOX | https://forecast.weather.gov/wwamap/wwatxtget.php?cwa=usa&wwa=high+surf+advisory]
[NWS SF Bay Area | https://www.weather.gov/mtr/]
[NWS Grand Junction | https://forecast.weather.gov/showsigwx.php?product1=Winter+Weather+Advisory&firewxzone=COZ205]
[NWS LIX | https://www.weather.gov/lix/]
[WPC | https://www.wpc.ncep.noaa.gov/qpf/ero.php?day=1&opt=curr]
[NWS APX | https://www.weather.gov/apx/]
[NWS Missoula | https://forecast.weather.gov/wwamap/wwatxtget.php?cwa=mso&wwa=winter+weather+advisory]
[NWS Buffalo | https://www.weather.gov/buf/BUFHWOBUF]
[NWS WWA (ILM) | https://forecast.weather.gov/wwamap/wwatxtget.php?cwa=usa&wwa=coastal+flood+advisory]
[NWS Wilmington | https://www.weather.gov/ilm/]
[NWS Portland | https://www.weather.gov/wwamap/wwatxtget.php?cwa=pqr&wwa=all]
[NWS Nashville | https://forecast.weather.gov/wwamap/wwatxtget.php?cwa=usa&wwa=winter+weather+advisory]
[NWS EWX AFD | https://forecast.weather.gov/product.php?issuedby=EWX&product=AFD&site=EWX]
[NWS EWX | https://www.weather.gov/ewx/]
[NWS WWA | https://forecast.weather.gov/wwamap/wwatxtget.php?cwa=usa&wwa=coastal+flood+advisory]
[NWS Seattle | https://www.weather.gov/sew/]
[WPC | https://www.wpc.ncep.noaa.gov/discussions/pmdepd.html]
Transcript
A quick national situational picture.
Speaker A:The Weather Prediction center keeps a Day one marginal risk for excessive rainfall along the central Gulf coast today.
Speaker A:Localized flash flooding is possible where showers repeatedly develop near the coast.
Speaker A:Farther west, the WPC's extended discussion flags a moderate to strong multi day atmospheric river likely for the Pacific Northwest early next week, worth early planning for tide river interactions and coastal impacts in the Upper Great Lakes.
Speaker A:Lake effect snow continues with warnings in Michigan's eastern up.
Speaker A:Meanwhile, the Rockies and adjacent high terrain trend colder with winter storm watches expanding for parts of Colorado and Montana into the weekend.
Speaker A:Alaska Remains active with winter weather advisories and marine freezing spray hazards.
Speaker A:No damaging US Earthquakes overnight, but USGS logged several small events including a magnitude 3.1 in Interior Alaska.
Speaker A:Finally, FEMA reminds disaster survivors that rental assistance may be available under certain declarations.
Speaker A:Check your incident's guidance.
Speaker A:Let's run through the states Alabama Rain spreads across coastal and south Alabama today into tonight with isolated flash flood potential near the immediate coast under the WPC's marginal risk.
Speaker A:Expect periods of showers and a few heavier bursts.
Speaker A:Urban ponding possible.
Speaker A:Alaska the Anchorage forecast area highlights winter weather advisories and heavy freezing spray warnings for marine zones.
Speaker A:Light snow continues for parts of Southwest and South Central while brisk winds and freezing spray create dangerous small craft conditions.
Speaker A:High surf advisories continue early today for portions of the central southern coast and eg Ventura county with four to seven foot breakers and strong rip currents.
Speaker A:Bay Area highlights minor tidal flooding during high tides through the weekend and overnight cold weather advisories inland.
Speaker A:Colorado Winter storm watch posted for the Gore Elk Mountains, flat tops and nearby high terrain Friday evening through Sunday morning with periods of heavy mountain snow and difficult travel over higher passes.
Speaker A:Louisiana A late week soaker is underway.
Speaker A:New Orleans Baton Rouge office highlights moderate to heavy rainfall today into Friday with a WPC marginal risk for excessive rain.
Speaker A:Localized flash flooding is possible in poor drainage spots.
Speaker A:Michigan Winter storm warning remains for parts of chippewa county, eastern up with additional 1 to 3 inches today and Lake effect bands producing hazardous travel at times.
Speaker A:Small craft and gale hazards continue on the lakes.
Speaker A:Montana Winter weather advisory today for portions of western MT including Lookout Pass corridor with a winter storm watch from late tonight through Saturday.
Speaker A:Above 3,000ft.
Speaker A:Mountain travel becomes difficult with periods of heavy snow and reduced visibility.
Speaker A:New York Western Northern NY Lake effect snow produces minor additional accumulations today, especially near the Route 104 corridor off Lake Ontario.
Speaker A:Marine hazards continue on the lakes with rough waves.
Speaker A:North Carolina Coastal flood advisory occurred around early morning high tide for portions of the Cape Fear area.
Speaker A:Minor tidal inundation impacted low lying shorelines and tidal waterways.
Speaker A:Another round of higher tides is possible Friday.
Speaker A:Oregon Coastal flood advisories for Clatsop county and adjacent South WO coast tied to high tides today and again Friday.
Speaker A:Marine Small craft advisory's gale also in effect at times.
Speaker A:Tennessee Winter weather advisory this evening for the Cumberland Plateau region, for example White Cumberland, Putnam Fentress as mixed wintry precipitation could create slick spots into the late evening overnight.
Speaker A:Texas A reinforcing cold front settles south today with periods of light to moderate rain mainly east of I35 and NWS.
Speaker A:Austin.
Speaker A:San Antonio notes cooler temps and wet roads into Friday morning while widespread flooding is not expected.
Speaker A:Brief ponding is possible in heavier showers.
Speaker A:Washington Coastal flood advisory today and a coastal flood watch Friday for Grays harbor county coast with minor tidal overflow today and potential moderate flooding Friday.
Speaker A:Winds and swell may enhance effects near inlets early next week.
Speaker A:WPC highlights a multi day atmospheric river aimed at the pnw.
Speaker A:Monitor tide cycles and river forecasts closely.
Speaker A:All other states have no significant updates in the last 24 hours.
Speaker A:That's the brief for Thursday, December 4th.
