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Aviation Forecast Discussion

.AVIATION... 06Z TAFS: Moisture will start to increase a bit more into the Inland Northwest over the next couple of days and this will result more in the way of convective shower activity with diurnal heating. Afternoon showers will largely remain over the higher terrain. There is a 10-15% chance for isolated thunderstorms over the Idaho Panhandle this afternoon. Winds will be light, but decaying showers may result in an outflow that impacts airports over northeast Washington and the Idaho Panhandle including Colville, Deer Park, Sandpoint, Spokane, and Coeur d'Alene (K63S/KDEW/KSZT/KGEG/KSFF/KCOE). FORECAST CONFIDENCE AND/OR ALTERNATE SCENARIOS: High confidence for VFR conditions. There is a small chance (less than 30%) for afternoon showers over the mountains of northeast Washington to drift into the Spokane Area around mid to late afternoon (after 21Z) and impact KGEG/KSFF airport terminals. /SVH ----------------------- Confidence descriptors: Low - Less than a 30 percent chance Moderate - 30 to 70 percent chance High - Greater than a 70 percent chance For additional probabilistic information for NWS Spokane airports,please refer to the Aviation Dashboard on our webpage: https:/www.weather.gov/otx/avndashboard &&

Latest GEG Terminal Aerodrome Forecast (TAF)

FTUS80 KGEG 260521 RRJ
KGEG 260520Z 2606/2706 VRB05KT P6SM FEW090 BKN120
     FM262000 30007KT P6SM SCT080 BKN100
     FM270200 VRB05KT P6SM BKN090

Latest Area Terminal Aerodrome Forecasts (TAFs)

FTUS80 KSFF 260521 RRX
KSFF 260520Z 2606/2706 VRB03KT P6SM FEW100 BKN120
     FM262100 29005KT P6SM BKN080 BKN100
     FM270200 VRB04KT P6SM BKN090

FTUS46 KOTX 260520
TAFCOE
TAF
KCOE 260520Z 2606/2706 VRB04KT P6SM OVC120
     FM262000 31007KT P6SM BKN080 OVC100
     FM262200 29007KT P6SM SCT100
      PROB30 2622/2702 -SHRA OVC080
     FM270200 05006KT P6SM BKN080=

FTUS54 KPUW 260521 RRB
KPUW 260520Z 2606/2706 00000KT P6SM BKN090
     FM261600 27004KT P6SM FEW090
     FM261900 28007KT P6SM BKN090
     FM270300 VRB03KT P6SM SCT090

FTUS46 KOTX 260520
TAFLWS
TAF
KLWS 260520Z 2606/2706 18006KT P6SM SCT110
     FM260800 VRB04KT P6SM BKN110
     FM262100 30006KT P6SM BKN100
     FM270300 18005KT P6SM SCT100=

FTUS44 KMWH 260521
KMWH 260520Z 2606/2706 02004KT P6SM SCT120
     FM261900 26007KT P6SM SCT120 BKN180

FTUS80 KEAT 260521 RRG
KEAT 260520Z 2606/2706 VRB04KT P6SM SCT110
     FM260800 29007KT P6SM FEW110
     FM261800 26006KT P6SM FEW110 BKN180
     FM270000 30009KT P6SM SCT100

FTUS80 KSEA 260903 AAC
KSEA 260900Z 2609/2712 13004KT P6SM SKC
     FM261700 32006KT P6SM SKC
     FM262100 33010KT P6SM FEW250
     FM270500 21005KT P6SM FEW250
     FM271100 19005KT P6SM SCT012

FTUS44 KBOI 260521
KBOI 260520Z 2606/2706 VRB05KT P6SM BKN200
     FM261500 30009KT P6SM FEW070
     FM262000 31013G22KT P6SM FEW070
     FM270200 32010KT P6SM SCT100

FTUS54 KPDT 260521 RRB
KPDT 260520Z 2606/2706 VRB06KT P6SM SCT250
     FM261800 31006KT P6SM BKN250

FTUS80 KALW 260521
KALW 260520Z 2606/2706 12006KT P6SM BKN250
     FM261800 26005KT P6SM BKN250

FTUS80 KPSC 260521 RRV
KPSC 260520Z 2606/2706 VRB05KT P6SM SKC
     FM261700 32003KT P6SM SKC

FTUS54 KYKM 260521 RRE
KYKM 260520Z 2606/2706 VRB05KT P6SM FEW250
     FM261000 27005KT P6SM SKC
     FM261800 VRB02KT P6SM SKC

FTUS80 KDLS 260521 RRG
KDLS 260520Z 2606/2706 VRB03KT P6SM BKN250
     FM261600 31009KT P6SM BKN150

FTUS46 KPDT 260520
TAFBDN
TAF
KBDN 260520Z 2606/2706 VRB05KT P6SM FEW250
     FM261100 24003KT P6SM SKC
     FM262100 34009KT P6SM BKN100=

FTUS44 KMSO 260524
KMSO 260522Z 2606/2706 VRB03KT P6SM BKN120
     FM261200 11011KT P6SM BKN050
     FM262200 03010G25KT P6SM VCSH OVC050
     FM270300 09006KT P6SM BKN045

FTUS43 KBTM 260524
KBTM 260522Z 2606/2706 16005KT P6SM VCSH SCT040 BKN070
     FM261200 00000KT P6SM VCSH BKN035 PROB30 2617/2621 2SM -SN BR
      OVC015
     FM262100 32011KT 5SM -SN OVC020
     FM270100 02008KT P6SM VCSH BKN030

FTUS80 KSMN 260524 RRG
KSMN 260522Z 2606/2706 12003KT P6SM BKN070
     FM262000 36011KT P6SM VCSH BKN060 PROB30 2622/2624 6SM -RA BR
      BKN050
     FM270000 35007KT P6SM BKN060
     FM270400 35005KT P6SM OVC030 PROB30 2704/2706 4SM -RASN BR
      OVC020

FTUS44 KGPI 260524
KGPI 260522Z 2606/2706 02011KT P6SM BKN120
     FM261100 02012KT 5SM -SHSN OVC030
     FM261700 03015G25KT P6SM VCSH OVC040
     FM262300 02012KT P6SM BKN120

Raw METARs for WFO OTX CWA and Surrounding Areas

--TAFs--	Time	T	Td	RH	HI	WC	Dir	Wind	G	PK	Vis	Wx	Pcp	Clouds
KGEG	0935Z	43	27	53				calm			10			OVC120
KSFF	0935Z	39	34	81				calm			10			OVC120
KCOE	0935Z	39	30	70		35	130	6			10			OVC120
KPUW	0935Z	34	28	81				calm			10			CLR
KLWS	0935Z	45	30	57				calm			10			OVC110
KMWH	0935Z	30	27	86		25	360	5			10			CLR
KEAT	0935Z	43	27	53		39	280	6			10			CLR
--WA--	Time	T	Td	RH	HI	WC	Dir	Wind	G	PK	Vis	Wx	Pcp	Clouds
KS52	0935Z	28	22	80				calm			10			SCT070 BKN090 OVC120
KOMK	0935Z	34	18	51				calm			10			CLR
KS10
KEPH	0935Z	37	27	65		33	350	5			10			SCT120
K63S	0935Z	32	28	87				calm			10			OVC100
KDEW	0935Z	37	34	87				calm			10			OVC110
KSKA	0855Z	42	27	55				calm			10			OVC110
--ID--	Time	T	Td	RH	HI	WC	Dir	Wind	G	PK	Vis	Wx	Pcp	Clouds
K65S	0935Z	37	27	65				calm			10			OVC110
KSZT	0935Z	37	32	81				calm			10			OVC110
KMLP	0935Z	27	21	80		20	140	6			10			CLR
-PDT TAFs-	Time	T	Td	RH	HI	WC	Dir	Wind	G	PK	Vis	Wx	Pcp	Clouds
KPDT	0935Z	36	25	65		29	120	10			10			CLR
KALW	0930Z	37	27	65		32	100	6			10			CLR
KPSC	0935Z	36	30	81				calm			10			CLR
KYKM	0935Z	34	28	81		28	280	7			10			CLR
KDLS	0935Z	43	27	53		39	100	6			10			FEW120
KRDM	0935Z	25	12	59		19	160	5			10			CLR
KBDN	0935Z	30	16	55		25	190	5			10			OVC075
-MSO TAFs-	Time	T	Td	RH	HI	WC	Dir	Wind	G	PK	Vis	Wx	Pcp	Clouds
KMSO	0935Z	30	27	86				calm			10			CLR
KBTM	0935Z	27	23	86				calm			10			FEW075 OVC095
KSMN	0935Z	34	27	75				calm			10			OVC090
KGPI	0935Z
KHRF	0935Z	23	19	86				calm			10			CLR
-Misc-	Time	T	Td	RH	HI	WC	Dir	Wind	G	PK	Vis	Wx	Pcp	Clouds
KSEA	0935Z	46	28	50		42	140	8			10			CLR
KSMP	0856Z	39	21	48				calm			10			CLR
KELN	0935Z	34	25	70				calm			10			CLR
K1YT	0855Z	37	24	60			110	3			10			CLR
KRLD	0935Z	39	33	80				calm			10			CLR
KGIC	0935Z	32	28	87				calm			10			OVC080
KHRI	0935Z	34	28	81		29	120	5			10			CLR
KP69	0852Z	34	32	92			350	3

Lowest Expected Flight Category Forecasts - EXPERIMENTAL

•This site is for informational purposes. It should be used with other preflight information sources needed to satisfy all the requirements of 14 CFR 91.103. It is NOT designed to be used as a primary or sole source of information for preflight action. Refer to Flight Service for more information.

0-1 hr Ceiling Forecast	0-1 hr Visibility Forecast

1-2 hr Ceiling Forecast	1-2 hr Visibility Forecast

2-3 hr Ceiling Forecast	2-3 hr Visibility Forecast

3-4 hr Ceiling Forecast	3-4 hr Visibility Forecast

4-5 hr Ceiling Forecast	4-5 hr Visibility Forecast

5-6 hr Ceiling Forecast	5-6 hr Visibility Forecast

6-12 hr Ceiling Forecast	6-12 hr Visibility Forecast

12-18 hr Ceiling Forecast	12-18 hr Visibility Forecast

18-24 hr Ceiling Forecast	18-24 hr Visibility Forecast

HREF Ceiling Probabilities - EXPERIMENTAL

•These plots are produced by HREF ensemble guidance and are for informational purposes. It should be used with other preflight information sources needed to satisfy all the requirements of 14 CFR 91.103. It is NOT designed to be used as a primary or sole source of information for preflight action. Refer to Flight Service for more information.

0-1 hr Probability of Ceiling < 1000 ft	0-1 hr Probability of Ceiling < 2000 ft	0-1 hr Probability of Ceiling < 3000 ft

1-2 hr Probability of Ceiling < 1000 ft	1-2 hr Probability of Ceiling < 2000 ft	1-2 hr Probability of Ceiling < 3000 ft

2-3 hr Probability of Ceiling < 1000 ft	2-3 hr Probability of Ceiling < 2000 ft	2-3 hr Probability of Ceiling < 3000 ft

3-4 hr Probability of Ceiling < 1000 ft	3-4 hr Probability of Ceiling < 2000 ft	3-4 hr Probability of Ceiling < 3000 ft

4-5 hr Probability of Ceiling < 1000 ft	4-5 hr Probability of Ceiling < 2000 ft	4-5 hr Probability of Ceiling < 3000 ft

5-6 hr Probability of Ceiling < 1000 ft	5-6 hr Probability of Ceiling < 2000 ft	5-6 hr Probability of Ceiling < 3000 ft

6-12 hr Probability of Ceiling < 1000 ft	6-12 hr Probability of Ceiling < 2000 ft	6-12 hr Probability of Ceiling < 3000 ft

12-18 hr Probability of Ceiling < 1000 ft	12-18 hr Probability of Ceiling < 2000 ft	12-18 hr Probability of Ceiling < 3000 ft

18-24 hr Probability of Ceiling < 1000 ft	18-24 hr Probability of Ceiling < 2000 ft	18-24 hr Probability of Ceiling < 3000 ft

HREF Visibility Probabilities - EXPERIMENTAL

0-1 hr Probability of Visibility < 0.25 mi	0-1 hr Probability of Visibility < 0.5 mi	0-1 hr Probability of Visibility < 1 mi

1-2 hr Probability of Visibility < 0.25 mi	1-2 hr Probability of Visibility < 0.5 mi	1-2 hr Probability of Visibility < 1 mi

2-3 hr Probability of Visibility < 0.25 mi	2-3 hr Probability of Visibility < 0.5 mi	2-3 hr Probability of Visibility < 1 mi

3-4 hr Probability of Visibility < 0.25 mi	3-4 hr Probability of Visibility < 0.5 mi	3-4 hr Probability of Visibility < 1 mi

4-5 hr Probability of Visibility < 0.25 mi	4-5 hr Probability of Visibility < 0.5 mi	4-5 hr Probability of Visibility < 1 mi

5-6 hr Probability of Visibility < 0.25 mi	5-6 hr Probability of Visibility < 0.5 mi	5-6 hr Probability of Visibility < 1 mi

6-12 hr Probability of Visibility < 0.25 mi	6-12 hr Probability of Visibility < 0.5 mi	6-12 hr Probability of Visibility < 1 mi

12-18 hr Probability of Visibility < 0.25 mi	12-18 hr Probability of Visibility < 0.5 mi	12-18 hr Probability of Visibility < 1 mi

18-24 hr Probability of Visibility < 0.25 mi	18-24 hr Probability of Visibility < 0.5 mi	18-24 hr Probability of Visibility < 1 mi


0-1 hr Probability of Visibility < 2 mi	0-1 hr Probability of Visibility < 4 mi

1-2 hr Probability of Visibility < 2 mi	1-2 hr Probability of Visibility < 4 mi

2-3 hr Probability of Visibility < 2 mi	2-3 hr Probability of Visibility < 4 mi

3-4 hr Probability of Visibility < 2 mi	3-4 hr Probability of Visibility < 4 mi

4-5 hr Probability of Visibility < 2 mi	4-5 hr Probability of Visibility < 4 mi

5-6 hr Probability of Visibility < 2 mi	5-6 hr Probability of Visibility < 4 mi

6-12 hr Probability of Visibility < 2 mi	6-12 hr Probability of Visibility < 4 mi

12-18 hr Probability of Visibility < 2 mi	12-18 hr Probability of Visibility < 4 mi

18-24 hr Probability of Visibility < 2 mi	18-24 hr Probability of Visibility < 4 mi