3 mar 2021 · The next update to this outlook will be issued by April 7, 2021 Precipitation for the 2021 water year thus far (Oct 1, 2020 through March 2,
WaterSupplyOutlook
18 mar 2021 · The latest (Dec 2020 – Feb Precipitation should be mostly near average, with the best chances for above-average April 2021 Forecast
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1 déc 2020 · During the wildfire events of September 2020, Oregon reached More precipitation will fall as rain rather than snow and in heavier rainfall events, African American buyers in Portland's Malo S Cool US cities prepare as future ' havens' for climate migrants Reuters 2019 April 6 [cited 2020 Nov 19]
Climate Health Oregon Full Report
Temperature, humidity, wind, pressure, cloud and rainfall observations are from Portland (Cashmore Airport) {station 090171} Evaporation and sunshine
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1 mai 2020 · The water supply forecast for the spring and summer of 2020 is below-average for most of AHPS Precipitation of Normal for April 2020
WaterSupplyOutlook( )
environment to increased winter rainfall and associated flooding 2020s 2040s 0 December February April June August (University of Oregon, Climate
risk vulnerabilities assessment press
Published on: 1 April 2020 DOI: 10 1002/qj 3779 RESEARCH rainfall and flash flood, landfalling tropical cyclones 1 National Weather Service (NWS) flash flood and rainfall 28th Conference on Severe Local Storms, Portland, OR
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13 juil. 1998 HYDRA rain gages in the Portland area that had at least 20 years of active ... City of Portland Stormwater Management Manual—April 2020.
In the Willamette CSO area the average rainfall did not exceed the 3-year design storm for any duration. Page 16. City of Portland Bureau of Environmental
PORTLAND STRATEGIC FRAMEWORK PLAN – APRIL 2020 particular high capability soils) high annual rainfall
22 janv. 2021 fires was something the Portland Fire. Weather area has not experienced ... Figure 2 – April 2020 Standardized Precipitation Index (SPI).
What Happened: November 2019 – January 2020 recorded for St. Catherine KSA and Portland. There ... For the period of February to April 2020
21 juin 2022 drought severity across much of Oregon with much above average precipitation in western and northeast. Oregon for April through mid June.
16 sept. 2022 common with La Niña which tends to delay cold weather until later... Page 14. November 2022 Forecast. Temperatures. Precipitation. ? Anomalous ...
Port of Portland April 2021 safety performance resulted in a decreased frequency of Workers'. Compensation claims reported compared to April 2020.
6 déc. 2020 90% of the average annual rainfall (1.61 inches over 24 hours or 0.19 in/hr ... City of Portland Stormwater Management Manual—April 2020.
March 2020. DEQ NWR Cleanup 2017 DEQ Portland Harbor stormwater contaminant load study . ... 2.3.1 Annual average precipitation determination .
Although April is typically one of the wettest months of the year April 2020 was a dry and warm month There were a few thunderstorms during the month that brought heavy rain and gusty winds but not enough to improve the precipitation deficit Precipitation was 20-70 percent of normal for most of the region and the US Drought Monitor increased
1 N (normal) is the climate normal (1991-2020) for Portland Airport Due to rounding of the monthly values the year total may not equal the sum of the monthly values 2 WY is Water Year which is includes rainy season is defined as the period from 1 October through 30 September
Downtown Portland April Fool's Day Years of Record: 150 ( 1871 to 2021 ) Warmest High 81 1 Apr 1987 Average High Temperature 58 0 Coolest High 37 1 Apr 1936 Average Low Temperature 42 4 Coldest am (low) 31 1 Apr 1936 Average Rainfall 0 11 Wettest 1 36" 1 Apr 1875 High Temp Frequency (# and days w/MaxT of ) Driest 0 00" 2019 last of many
This report presents analytical results for Portland's water to those needing technical data on water quality The report covers results for treated Bull Run water from May 1 2020 to April 30 2021 emphasizing results from April 6 2021 Analytical results for treated groundwater from the Columbia South Shore Well Field
How much rain did Portland get in April 2022?
The National Weather Service – Portland said it recorded 5.73 inches of rain throughout the month at the Portland International Airport, putting 2022 in the record books as for all time April precipitation. The record follows a historically dry April for the Rose City last year.
When does it rain in Portland Oregon?
Fifty-five percent of the rain comes in four months: November, December, January, and February. Another 32% comes in March, April, May, and October. In the other four months (June, July, August, and September), Portland receives about five inches of rainfall. The end of May marks the end of Portland and Oregon’s rainy season.
What is the average temperature in Portland in April?
In Portland, the average high-temperature in April marginally rises from a fresh 52.5°F (11.4°C) in March to a moderate 58.6°F (14.8°C). The average low-temperature, in April, is 39.7°F (4.3°C). The average relative humidity in April is 77%.
What was Portland's rainiest April in city history?
Portland broke its record for the rainiest April in city history, getting drenched with at least 5.60 inches of rainfall by 5 p.m. Saturday, according to the National Weather Service.
Appendix A. Stormwater Design Methodologies