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11/27/2024
WT Staff
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November 27, 2024 735 am PST
NWS: Thanksgiving Short Range Forecast Discussion USA
Short Range Forecast Discussion issued by NWS Weather Prediction Center College Park MD
Dry conditions on tap for the West Coast after several days of wet
weather.
Pre-Thanksgiving to Thanksgiving Day storm to push from the Mid Mississippi/Ohio Valley today into the Northeast on Thursday.
Much above average temperatures from the Southern Plains into the Gulf
Coast today, while much below average temperatures spill out into the
Great Plains and Mississippi Valley through the end of the week.
A low pressure system responsible for heavy snowfall over the Colorado
Rockies (ending this morning) will intensify into a dynamic mid-latitude
cyclone, tracking through the Midwest and into the Northeast Coast through
Thanksgiving day. Scattered showers and thunderstorms will develop across
the Mid/Lower Mississippi Valley and Ohio/Tennessee Valleys this afternoon
before spreading into the East Coast tonight and progressively shifting
eastward through Thanksgiving day. A swath of light to moderate snowfall
is likely to develop across portions of the interior Northeast, with the
Northern Appalachians forecast to receive 4-8 inches of snow by Friday
morning.
Elsewhere, snow showers across the Upper Great Lakes may yield anywhere
from 4-8 inches over the northern coastline of the Upper Peninsula of
Michigan as well as northern parts of the Lower Peninsula. A dry spell
ensues across the West as an upper ridge slowly settles over the region.
Shortwave energy will phase with a northern stream trough and amplify
across the eastern half of the country in the coming days. This
development will allow for a cool continental airmass to spill out across
the Great Plains and Mississippi Valley through Thanksgiving day before a
reinforcing arctic airmass plunges temperatures even more through this
holiday weekend. Prior to that, today will be the last day of much above
average temperatures throughout the South. Much of Texas will experience
high temperatures between 15-25 degrees above average.
Streamflow Situation from the network of USGS river monitoring sites in California
Mist, 50 degrees, high 58 for Hanford-San Joaquin. Patchy dense fog for Thanksgiving Day until 11 am, clearing to a sunny day in the Central Valley. Coastal watersheds continue to run much above seasonal normal water levels, a record high observed in Dry Creek near Healdsburg in North Coast watershed Region 1. As of this report, there are no floodings recorded in the network of USGS.
The FEMA Flood Map Service Center (MSC) is the official public source for flood hazard information produced in support of the National Flood Insurance Program (NFIP). Use the MSC to find your official flood map, access a range of other flood hazard products, and take advantage of tools for better understanding flood risk.
FEMA flood maps are continually updated through a variety of processes. Effective information that you download or print from this site may change or become superseded by new maps over time. For additional information, please see the Flood Hazard Mapping Updates Overview Fact Sheet
Find your local flood map, here.
Tropical Weather Outlook issued by the National Hurricane Center in Miami, FL 31 am PST Wed Nov 27
There are no storms expected within the next 48 hours. There are no disturbances expected to develop over the next 7 days in the East North Pacific.
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