Flash Flood Watch 6:00 PM Flood Watch 10:00 PM

Great Western Lake, Okanogan County, Washington, United States

Last updated: 4:51 PM CDT  ·  Refresh
11°C
Feels like 8°
Overcast
▲ 16°  /  ▼ 5°
Wind
7 mph S
Humidity
82%
Dew Point
8°
Pressure
27.26 inHg
Visibility
10 mi
UV Index
2.6
Cloud Cover
95%
Sunrise
6:29 AM
Sunset
7:12 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Great Western Lake is currently overcast at 10°C. Precipitation is likely — peak probability 79% around 6 PM. Sunrise: 6:29AM · Sunset: 7:12PM.

Alerts

Flash Flood Watch
Expires 6:00 PM
Flood Watch
Expires 10:00 PM
34 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
11°
44%
3 PM
9°
35%
4 PM
9°
41%
5 PM
12°
55%
6 PM
11°
78%
7 PM
11°
78%
8 PM
11°
75%
9 PM
9°
53%
10 PM
9°
46%
11 PM
9°
21%
12 AM
8°
7%
1 AM
8°
7%
2 AM
8°
7%
3 AM
8°
4%
4 AM
7°
3%
5 AM
5°
3%
6 AM
6°
3%
7 AM
6°
3%
8 AM
6°
3%
9 AM
9°
5%
10 AM
9°
5%
11 AM
10°
5%
12 PM
11°
3%
1 PM
13°
3%
7-Day Forecast
Today
16° 5°
Overcast with a 75% chance of rain.
Mon
18° 5°
Partly Cloudy.
Tue
17° 7°
Overcast with a 20% chance of rain.
Wed
24° 8°
Clear.
Thu
26° 8°
Clear.
Fri
26° 10°
Clear.
Sat
26° 11°
Partly Cloudy.
TimeTempConditionsPrecipWindHumidity
Now 11° Overcast 44% 7 mph S 82%
3 PM 9° Overcast 35% 6 mph S 80%
4 PM 9° Overcast 41% 5 mph S 80%
5 PM 12° Overcast 55% 4 mph SSW 84%
6 PM 11° Rain 78% 4 mph SSW 89%
7 PM 11° Rain 78% 4 mph SSW 93%
8 PM 11° Overcast 75% 3 mph SSW 94%
9 PM 9° Overcast 53% 3 mph SSW 94%
10 PM 9° Overcast 46% 3 mph SW 95%
11 PM 9° Overcast 21% 3 mph SW 96%
12 AM 8° Mostly Cloudy 7% 2 mph SW 96%
1 AM 8° Partly Cloudy 7% 2 mph SW 96%
2 AM 8° Mostly Cloudy 7% 2 mph SSW 95%
3 AM 8° Mostly Cloudy 4% 2 mph N 94%
4 AM 7° Mostly Cloudy 3% 2 mph NNW 93%
5 AM 5° Partly Cloudy 3% 2 mph NNW 90%
6 AM 6° Partly Cloudy 3% 2 mph NNW 88%
7 AM 6° Partly Cloudy 3% 2 mph N 87%
8 AM 6° Partly Cloudy 3% 2 mph NNW 84%
9 AM 9° Partly Cloudy 5% 2 mph S 80%
10 AM 9° Partly Cloudy 5% 2 mph S 77%
11 AM 10° Partly Cloudy 5% 3 mph SSW 72%
12 PM 11° Partly Cloudy 3% 4 mph SSW 67%
1 PM 13° Partly Cloudy 3% 4 mph SSW 62%
15-Day Forecast
Today
9/13
Overcast
75%
5°
16°
Mon
9/14
Partly Cloudy
7%
5°
18°
Tue
9/15
Overcast
20%
7°
17°
Wed
9/16
Clear
6%
8°
24°
Thu
9/17
Clear
3%
8°
26°
Fri
9/18
Clear
3%
10°
26°
Sat
9/19
Partly Cloudy
3%
11°
26°
Sun
9/20
Clear
8%
9°
25°
Mon
9/21
Mostly Clear
3%
10°
24°
Tue
9/22
Overcast
15%
10°
24°
Wed
9/23
Overcast
33%
9°
22°
Thu
9/24
Clear
25%
8°
21°
Fri
9/25
Clear
25%
7°
20°
Sat
9/26
Clear
60%
8°
21°
Sun
9/27
Clear
25%
8°
21°
34
Good
U.S. Air Quality Index · Dominant: O3
50 100 150 200

Air quality is satisfactory and poses little or no health risk.

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
18 AQI 3.2 µg/m³
O3
Ground-level ozone
Dominant
34 AQI 37 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Mon 34 Good 34 18
Tue 30 Good 30 26
Wed 28 Good 28 13
About the Air Quality Index
0–50 Good
51–100 Moderate
101–150 Unhealthy for Sensitive Groups
151–200 Unhealthy
201–300 Very Unhealthy
301–500 Hazardous

The U.S. AQI runs 0–500. The overall value equals the highest individual pollutant sub-index, and the dominant pollutant is the one driving it. PM2.5 (fine particles) is reported in µg/m³ and ozone (O3) in ppb. Forecast source: NWS NAQFC.

1000850700500400300250200150100 -40-30-20-10010203040 0.41247101624 LCLLFCEL0°C Temperature (°C) Pressure (hPa)
Temp Dewpoint Parcel (SB) CAPE CIN Dry adiabat Moist adiabat Mixing ratio
RAP
Valid Sun Sep 13, 20:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 60 70 80 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE72 J/kg
MLCAPE19 J/kg
MUCAPE0 J/kg
SBCIN0 J/kg
MLCIN-0 J/kg
Lifted Index2.7
Kinematics
0–6 km Shear29 kt
0–1 km Shear13 kt
Eff. Shear—
0–1 km SRH14
0–3 km SRH111
Eff. SRH—
Storm Motion103° @ 10 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)—
Supercell—
K-Index22.6
Thermo & Levels
PWAT0.70 in
0–3 km LR5.9 °C/km
700–500 LR6.2 °C/km
Total Totals45.8
LCL887 hPa
LFC923 hPa
EL737 hPa
Freezing Lvl5,013 ft