Wenatchee/Okanogan Forecast

Date Issued: 2021-04-12 17:33:34 (viewed 194 times)

Discussion:

Overnight lows are to be significantly warmer for most tonight compared to last night even though temps aloft remain apporx the same as well as dew points remaining generally in the low teens. An increase in winds throughout the course of the evening will continue through the overnight as high pressure continues to build to the NE and low pressure to the S/SW of the state. This means wind direction will continue to be N/NE at the surface. Skies are to be mostly clear with a few transient high clouds possible. Based on temps aloft alone, the potential overnight low looks to be near 23 degrees with exceptionally low dew points again pulling that potential under 20 degrees. With strong N/NE winds however, it is anticipated that most locations will remain around the low to mid 30s. Some of the cold locations/locations sheltered from a N/NE wind stand to see temps drop into the upper 20s, a few possibly pulling into the mid 20s. Temperatures will again fluctuate a few degrees up and down through the overnight as winds mix the surface layer. Locations somewhat sheltered will notice this effect most as winds wont be able to mix as consistently as more exposed locations. With surface gradients continuing to tighten through the overnight, surface winds are expected to continually increase. This may seem to indicate that more exposed locations will realize the overnight low more around midnight or 0100 (even if it doesn't drop below 32) while winds remain lower (relatively speaking) and radiative loss has had time to cool the surface. Locations That do reach 32 or cooler may expect to realize this near midnight-0100 as well, with increasing winds overnight fluctuating the temperatures a few degrees up or down from there while generally maintaining low 30s with a few dips into the upper 20s. Particularly wind sheltered locations may scratch into the mid 20s, but this isnt expected to be widespread. Inversion conditions will be weak and cold weather protection should be limited to those with locations that are somewhat wind sheltered under a N/NE wind.

Tuesday looks to be dry and windy with NE winds. Dew points will continue to remain in the low to mid teens and skies will be mostly sunny/clear. Temps aloft look to generally remain the same with guidance hinting at a slight warmer up as temps aloft slightly warm form the NW. Overnight potentials based on them alone are indicated to be in the upper 20s, but really remaining closer to 20 once dew points are factored in. With NE winds also expected to be breezy through the overnight, but slightly lighter than what is expected for tonight (Monday), anticipate observed temps Tuesday night to be somewhat similar to what verifies tonight (Monday).

Under the influence of the upper level ridge in British Columbia, temperatures aloft still warming for Wednesday night with potential minimums in the mid 30s in the Okanogan district and around 30 in the Wenatchee district. Light winds coming out of the Fraser Plateau (where conditions will be warmer) overnight should help to mitigate frost risk, but dew points are expected to be in the low to mid 20s and skies will be clear. Areas that are well sheltered under light northerly winds should keep close watch on the forecast. The B.C. ridge begins building south Thursday night so that potential minimums raise to the mid 30s by early morning Friday and around 40 by early morning Saturday in both districts. Not expecting to need for widespread frost protection these nights.

NOTE: Please see our online form under 'Report Frost'. These submissions will GREATLY help us fine tune our forecasting procedure and help us provide the most accurate forecasts possible.

NOTE: 'Cigs' in the tonight forecast below indicate the ceiling, the height above ground level at which cloud cover becomes broken. Ex: Few clouds at 5000ft, scattered cloud cover at 10000ft, broken cloud cover at 15000ft = Cigs 15000ft, even though there are some clouds present at lower heights above ground.

Okanogan:

- The 5 pm PDT temperature at Omak Airport was 55 degrees with a dew point of 16 degrees.

Tonight

Weather: Dry condtions expected. Mostly clear.
Wind: N/NE breezy to windy, becoming near 15mph with a few higher gusts.
Min Temp: Mostly low to mid 30s with some cold/sheltered spots dipping into upper 20s, possibly some isolated mid 20s.
Protection: Possibly needed for some pit fruits. Needed for pit fruits and some pome fruits in the cold/sheltered locations.
Ceiling or Inversion: Weak. No cig.

Tuesday and Tuesday Night

Weather: Dry conditions expected. Mostly sunny/clear.
Wind: N/NE and breezy to windy, becoming near 20mph during the day, slightly easing overnight.
Max Temp: Mid 60s
Min Temp: Mostly low to mid 30s with some cold/sheltered spots dipping into upper 20s, possibly some isolated mid 20s.
Protection: Possibly needed for some pit fruits. Needed for pit fruits and some pome fruits in the cold/sheltered locations.

Further Outlook
Wednesday and Wednesday Night

Weather: Dry conditions expected. Mostly sunny/clear.
Wind: N/NE and breezy, lighter overnight
Max Temp: Near 70
Min Temp: Mid 30s to near 40.
Protection: Should not be needed.

Thursday and Thursday Night

Weather: Dry conditions expected. Mostly sunny/clear.
Wind: Generally light.
Max Temp: Low 70s
Min Temp: Upper 30s to low 40s.
Protection: Should not be needed.

Friday and Friday Night

Weather: Dry conditions expected. Mostly sunny/clear.
Wind: Generally light.
Max Temp: Mid 70s
Min Temp: Upper 30s to low 40s.
Protection: Should not be needed.

Key Station Forecasts (2021-04-13 00:00:00)
E.OrovilleAFOkanogan (CW)28
Ellisforde30Malott (CW)28
Ellisforde (CW)26Brewster.N (CW Brewster Flat)SAF
Loomis Valley30Brewester.SAF
Tonasket.S29Bridgeport (CW)AF
Pogue FlatAFMethow (CW)32
All Stations are AgWeatherNet Stations
(CW) = Indicates an Absorbed Clearwest Station
(CW XXX) = Indicates an Absorbed Clearwest Station and Original Name of Clearwest Station
SAF = slightly above 32 (33 or 34); AF = above 32 (35 or higher)

Wenatchee:

- The 5 pm PDT temperature at Wenatchee-Pangborn Airport was 55 degrees with a dew point of 12 degrees.

Tonight

Weather: Dry condtions expected. Mostly clear.
Wind: N/NE breezy to windy, becoming near 15mph with a few higher gusts.
Min Temp: Mostly low to mid 30s with some cold/sheltered spots dipping into upper 20s, possibly some isolated mid 20s.
Protection: Prossibly needed for those in exposed locations, needed more widespread for cold/sheltered locations.
Ceiling or Inversion: Weak. No cig.

Tuesday and Tuesday Night

Weather: Dry conditions expected. Mostly sunny/clear.
Wind: N/NE and breezy to windy, becoming near 20mph during the day, slightly easing overnight.
Max Temp: Low 60s
Min Temp: Mostly low to mid 30s with some cold/sheltered spots dipping into upper 20s, possibly some isolated mid 20s.
Protection: Prossibly needed for those in exposed locations, needed more widespread for cold/sheltered locations.

Further Outlook
Wednesday and Wednesday Night

Weather: Dry conditions expected. Mostly sunny/clear.
Wind: N/NE and breezy
Max Temp: Mid 60s
Min Temp: Low to upper 30s.
Protection: May be needed for blossomed crops in sheltered areas

Thursday and Thursday Night

Weather: Dry conditions expected. Mostly sunny/clear.
Wind: Generally light.
Max Temp: Upper 60s
Min Temp: Mid 30s to low 40s.
Protection: Should not be needed.

Friday and Friday Night

Weather: Dry conditions expected. Mostly sunny/clear.
Wind: Generally light.
Max Temp: Low 70s
Min Temp: Low to mid 40s.
Protection: Should not be needed.

Key Station Forecasts (2021-04-13 00:00:00)
Wenatchee.W (TFREC)32E.Wenatchee (CW)SAF
Peshastin.N (CW Leavenworth)31Orondo (CW)AF
Cashmere (CW)SAFBrays LandingAF
Stemilt (CW)SAFBoyd DistrictAF
Malaga (CW)31Manson (CW)31
All Stations are AgWeatherNet Stations
(CW) = Indicates an Absorbed Clearwest Station
(CW XXX) = Indicates an Absorbed Clearwest Station and Original Name of Clearwest Station
SAF = slightly above 32 (33 or 34); AF = above 32 (35 or higher)
Extended Outlook

Extended released on Tue and Fri only.

Oswald/Ingalls

Washington State University