Atmospheric River in the Pacific Northwest and Northern Rockies this Weekend

A Pacific storm and atmospheric river will impact the Pacific Northwest states and northern Rockies this weekend, bringing locally heavy low elevations rain and heavy high elevation snow in the mountains. By Sunday over the Interior Northwest, rain combined with snowmelt will increase the risk of flood hazards. Flood Watches are in effect. Read More >

CIGS	VSBY	AAR	Type Approaches	Impact
>040	>10	130+	Visuals
012*-040	>10	112-118	Instrument
012*-040	<10	90-108	Instruments	MIT, TBFM (scheduling/metering)
<012*	>1/2	90-98	Instruments	MIT, TBFM (scheduling/metering)
002-009	½ - 3	78-96	Instruments	MIT, TBFM (metering/scheduling)
<002	<1/2	54-60	Instruments	Tower requires additional spacing on arrival runways due to Tower Departure rule (2 increasing to 3). CATII and CATIII ILS approaches; MIT, GDP, Potential GS

*D10 varies this threshold between 020-012 depending on traffic volume and other operational conditions.

Wind Speed/Direction		AAR	Type Approaches	Impact
25-30kts sustained from 280-300	Xwind	84-114	Visuals	MIT, TBFM (metering/scheduling)
>35kts sustained from 280-300	NW Flow Event	24-48	Instrument/Visuals	GDP, MIT, Potential GS
Gusts >45kts from 280-300	Xwind/NW Flow	24	Instrument/Visuals	Potential GS

S4 VMC: 13R (6MIT), 18R, 17C, 17L = 130/90

S4 LVMC: 13R (6MIT), 18R, 17C, 17L= 116/90

S4 IMC: 13R (6MIT), 18R, 17C, 17L= 108/90

S3 IMC: 18R, 17C, 17L = 98/90

S3 LIMC: 18R, 17C, 17L = 90/90

N4 VMC: 36L, 35C, 35R, 31R (6MIT) = 124/90

N4 LVMC: 36L, 35C, 35R, 31R (6MIT) = 112/90

N4 IMC: 36L, 35C, 35R, 31R (6MIT) = 108/90

N3 IMC: 36L, 35C, 35R = 94/90

N3 LIMC: 36L, 35C, 35R = 88/90

NW2VMC/IMC: 31R, 31L = 48/48 (5MIT on ea)

NW2LIMC: 31R = 24 (Single RWY)

Atmospheric River in the Pacific Northwest and Northern Rockies this Weekend

DFW Tracon Weather Impacts