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Snow Across the Great Lakes, Central Appalachians, and Northeast; Unsettled Weather in the West

Light to moderate snow will continue into Saturday over the Great Lakes, Central Appalachians, and Northeast. This weekend into next week, a series of atmospheric rivers will bring gusty winds, periods of heavy rain, and mountain snow to northern California and the Pacific Northwest. Colder temperatures are in store for the weekend from the Great Lakes to East Coast. Read More >

*Note: Images generally update three times a day at 3:00 am, 8:20 am 3:00 pm Pacific local time. This page is not an official product and graphics may not always update. This page is maintained by the National Weather Service Pendleton, Oregon forecast office.*

 

Current Hazards

Satellite

 

Local Radar

 

Regional Radar

 

24-hr Obs Precip

48-hr Obs Precip

To Date Precip

Monthly Precip

Monthly Departure

 

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Day 1 QPF Day 2 QPF

 

Day 3 QPF Day 4 QPF

 

Day 5 QPF Day 6 QPF

 

Day 7 QPF  

 

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Day 1 Highs Day 2 Highs Day 3 Highs

 

         

Day 4 Highs Day 5 Highs Day 6 Highs

 

         

Day 1 Lows Day 2 Lows Day 3 Lows

 

         

Day 4 Lows Day 5 Lows Day 6 Lows

 

         

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Day 1 Peak Gusts Day 2 Peak Gusts Day 3 Peak Gusts

 

         

Day 4 Peak Gusts Day 5 Peak Gusts Day 6 Peak Gusts

 

         

Day 1 Peak Sustained Winds Day 2 Peak Sustained Winds Day 3 Peak Sustained Winds

 

         

Day 4 Peak Sustained Winds Day 5 Peak Sustained Winds Day 6 Peak Sustained Winds

 

         

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Day 1 Min RH Day 2 Min RH Day 3 Min RH

 

         

Day 4 Min RH Day 5 Min RH Day 6 Min RH

 

         

Day 1 Max RH Day 2 Max RH Day 3 Max RH

 

         

Day 4 Max RH Day 5 Max RH Day 6 Max RH

 

         

LAL Day 1 LAL Day 2 LAL Day 3

 

         

LAL Night 1 LAL Night 2 LAL Night 3

 

         

Mixing Height Day 1 Mixing Height Day 2 Mixing Height Day 3

 

         

Mixing Height Night 1 Mixing Height Night 2 Mixing Height Night 3

 

         

Chance of Wetting Rain Day 1 Chance of Wetting Rain Day 2 Chance of Wetting Rain Day 3

 

         

Chance of Wetting Rain Night 1 Chance of Wetting Rain Night 2 Chance of Wetting Rain Night 3

 

         

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Day 1 Percent of Sunshine Possible Day 2 Percent of Sunshine Possible Day 3 Percent of Sunshine Possible

 

         

Day 4 Percent of Sunshine Possible Day 5 Percent of Sunshine Possible Day 6 Percent of Sunshine Possible

 

         

Day 1 Hours of Sunshine Day 2 Hours of Sunshine Day 3 Hours of Sunshine

 

         

Day 4 Hours of Sunshine Day 5 Hours of Sunshine Day 6 Hours of Sunshine

 

         

The Ventilation Index (also known as the Clearing Index) is defined as the Mixing Height (depth of the mixed layer in 100's of feet above ground level) multiplied by the Transport Wind (average wind in the mixed layer in knots) and is represented by the following equation VI= (Mix Hght/100) x Trans Wind. Values between 0 and 300 generally represent poor dispersion, 300 and 600 fair dispersion, and 600-1000 good dispersion. However, smoke management agencies are encouraged to develop criteria that are suitable and representative of dispersion conditions in their local area. If you have any questions about this product please contact the National Weather Service Office in Pendleton, Oregon at 541-276-7832..

 

The Daily Dispersion Outlook is available here: https://forecast.weather.gov/product.php?site=pdt&issuedby=PDT&product=DDO.

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0-hr Forecast Ventilation Category 6-hr Forecast Ventilation Category 12-hr Forecast Ventilation Category

 

         

18-hr Forecast Ventilation Category 24-hr Forecast Ventilation Category 30-hr Forecast Ventilation Category

 

         

36-hr Forecast Ventilation Category 42-hr Forecast Ventilation Category 48-hr Forecast Ventilation Category

 

         

54-hr Forecast Ventilation Category 60-hr Forecast Ventilation Category 66-hr Forecast Ventilation Category

 

         

72-hr Forecast Ventilation Category 78-hr Forecast Ventilation Category 84-hr Forecast Ventilation Category

 

         

 

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Understanding NWS HeatRisk

 

NWS HeatRisk Prototype Main Page

Day 1 NWS HeatRisk Day 2 NWS HeatRisk Day 3 NWS HeatRisk

 

         

Day 4 NWS HeatRisk Day 5 NWS HeatRisk Day 6 NWS HeatRisk

 

         

 

The guidance provided below is from the National Blend of Models (NBM). The NBM is a nationally consistent and skillful suite of calibrated forecast guidance based on a blend of both NWS and non-NWS numerical weather prediction model data and post-processed model guidance. These guidance are provided as is, are experimental, and may not be current. Please see the official NWS forecast and watches, warnings, and advisories when making decisions impacted by weather. Additional guidance is available from https://blend.mdl.nws.noaa.gov/.

 

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Probability of max wind speed exceeding 20 mph in 24-hour period

Day 1 - 20 mph Threshold Day 2 - 20 mph Threshold Day 3 - 20 mph Threshold

 

         

Day 4 - 20 mph Threshold Day 5 - 20 mph Threshold Day 6 - 20 mph Threshold

 

         

 

Probability of max wind speed exceeding 25 mph in 24-hour period

Day 1 - 25 mph Threshold Day 2 - 25 mph Threshold Day 3 - 25 mph Threshold

 

         

Day 4 - 25 mph Threshold Day 5 - 25 mph Threshold Day 6 - 25 mph Threshold

 

         

 

Probability of max wind gust exceeding 25 mph in 24-hour period

Day 1 - 25 mph Threshold Day 2 - 25 mph Threshold Day 3 - 25 mph Threshold

 

         

Day 4 - 25 mph Threshold Day 5 - 25 mph Threshold Day 6 - 25 mph Threshold

 

         

 

Probability of max wind gust exceeding 55 mph in 24-hour period

Day 1 - 55 mph Threshold Day 2 - 55 mph Threshold Day 3 - 55 mph Threshold

 

         

Day 4 - 55 mph Threshold Day 5 - 55 mph Threshold Day 6 - 55 mph Threshold

 

         

 

 









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