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Dense Fog Advisory issued January 24 at 6:17PM PST until January 25 at 12:00PM PST by NWS
...
DENSE FOG ADVISORY IN EFFECT UNTIL NOON PST TUESDAY...
 ...
AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 4 PM PST WEDNESDAY BELOW 1500 FEET...
 * WHAT...
For the Air Stagnation Advisory below 1500 feet, a period of stagnant air with 
light winds is expected. For the Dense Fog Advisory, visibility one quarter to one 
half mile in
Dense Fog Advisory
...
DENSE FOG ADVISORY IN EFFECT UNTIL NOON PST TUESDAY...
 ...
AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 4 PM PST WEDNESDAY BELOW 1500 FEET...
 * WHAT...
For the Air Stagnation Advisory below 1500 feet, a period of stagnant air with 
light winds is expected. For the Dense Fog Advisory, visibility one quarter to one 
half mile in
Air Stagnation Advisory
****************
...DENSE FOG ADVISORY IN EFFECT UNTIL NOON PST TUESDAY...
...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 4 PM PST
WEDNESDAY BELOW 1500 FEET...
* WHAT...For the Air Stagnation Advisory below 1500 feet, a
period of stagnant air with light winds is expected. For the
Dense Fog Advisory, visibility one quarter to one half mile in
dense fog.
* WHERE...In Washington, Greater Vancouver Area. In Oregon,
Greater Portland Metro Area, Central Willamette Valley and
South Willamette Valley.
* WHEN...For the Air Stagnation Advisory, until 4 PM PST
Wednesday. For the Dense Fog Advisory, until noon PST Tuesday.
* IMPACTS...Hazardous driving conditions due to low visibility.
Air stagnation could result in the development and persistence
of poor air quality.
If driving, slow down, use your headlights, and leave plenty of
distance ahead of you.
People with respiratory illness should follow their physician`s
advice for dealing with high levels of air pollution during
periods of stagnant air.
State air quality agencies highly recommend that no outdoor
burning occur and that residential wood burning devices be
limited as much as possible. According to state air quality
agencies, prolonged periods of stagnant air can hold pollutants
close to the ground where people live and breathe. Check with
your local burn agency for any current restrictions in your area.

Record high temperature 121.1°F Record low temperature -90.0°F Record high gust 102.0 mph Record high average 38.0 mph Record daily rain 11.13 in. Record low windchill -90.0°F Record high barometer 30.971 in. Record low barometer 28.508 in.
Daily high pressure 30.308 in. Daily low pressure 30.293 in. Daily low windchill 24.3°F Daily high heat index 33.2°F Daily high gust speed 7.0 mph E Daily high average speed 4.7 mph E
Weather Data
LAST READING AT TIME: 2:25 AM DATE: January 25 2022, time of next update: 2:30 am
Current WeatherNight time Current Temperature 30.7°F (-0.7°C), Apparent temp 27.6°F
Maximum Temperature (since midnight)33.2°F at: 12:00 AM Minimum Temperature (since midnight)30.7°F at: 2:21 AM
Average windspeed (ten minute)0.7 mph Wind Direction (ten minute)SW (225°)
Windchill Temperature 30.7°F Maximum Gust (last hour)7.0 mph at: 1:55 AM
Maximum Gust (since midnight)7.0 mph at: 12:14 AM Maximum 1 minute average (since midnight)4.7 mph at: 12:15 AM
Rainfall (last hour)0.00 in. (0.0 mm) Rainfall (since midnight)0.00 in. (0.0 mm) ---
Rainfall This month 5.99 in. (152.1 mm) Rainfall To date this year 5.99 in. (152.1 mm)
Maximum rain per minute (last hour)0.00 in/min Maximum rain per hour (last 6 hours)0.00 in/hour
Yesterdays rainfall 0.01 in DewPoint 29.4°F (Wet Bulb :30.2°F )
Humidity 95 %, Humidex 26.2°F Barometer corrected to msl30.302 in. (1026.1 hPa)
Pressure change -0.00 in. (last hour) Trend (last hour)STEADY
Pressure change (last 12 hours)+0.06 in Pressure change (last 6 hours)+0.04 in
Current Solar 0 W/mē
Maximum solar (since midnight) 0 W/mē Minimum solar (since midnight)0 W/mē
Current 00:00 hours of sunshine today, current sky: Night time
Sunshine hours for the year: 10:05 hrs Sunshine hours for the month: 10:05 hrs
Current evapotranspiration 0.00 inches per day. Yesterday's reading 0.01

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Weather report/warning/Metars

PORTLAND-HILLSBORO AIRPORT, OR, United States (KHIO) 45-33N 122-57W 68M
Jan 25, 2022 - 04:53 AM EST / 2022.01.25 0953 UTC
Wind: Calm (direction variable):0
Visibility: 1/4 mile(s):0
Sky conditions: obscured
Weather: freezing fog
Temperature: 28.9 F (-1.7 C)
Dew Point: 28.9 F (-1.7 C)
Relative Humidity: 100%
Pressure (altimeter): 30.31 in. Hg (1026 hPa)
ob: KHIO 250953Z AUTO 00000KT 1/4SM R13R/2000V2600FT FZFG VV001 M02/M02 A3031 RMK AO2 SLP268 T10171017
cycle: 10



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Created by "Weather Display" software version 10.37S at this start time/date 6:47:38 AM 1/19/2022